=Paper=
{{Paper
|id=Vol-3147/paper12
|storemode=property
|title=Playing (with) the markets: Gamification and playfulness in brokerage platforms
|pdfUrl=https://ceur-ws.org/Vol-3147/paper12.pdf
|volume=Vol-3147
|authors=Agustin Ferrari Braun,Alex Gekker
|dblpUrl=https://dblp.org/rec/conf/gamifin/BraunG22
}}
==Playing (with) the markets: Gamification and playfulness in brokerage platforms==
Playing (with) the markets: Gamification and playfulness in brokerage platforms Agustin Ferrari Braun1, Alex Gekker2 1 University of Amsterdam, Turfdraagsterspad 9, Amsterdam 1012 XT, Netherlands 2 Tel Aviv University, Naftali Building, Tel - Aviv University, PO Box 39040, Ramat Aviv. Tel Aviv, 69978, Israel Abstract In early 2021, millions of amateur traders managed to turn the direction of the markets against established Wall Street funds by heavily investing in GameStop stock. The event led to a proliferation of discourses on the role of brokerage platforms in the gamification of trading. Swimming against the current, the present paper reviews the different lines of argumentation deployed by these commentators while calling into question their usage of the concept of gamification. It does so through a comparative interfacial analysis of three major brokerage platforms, showing that they all share common representations of the markets, which do not mobilise game-like elements. Faced with a lack of empirical evidence for the gamification hypothesis, we propose instead to explore the autotelic logics of play that emerge between the user(s) and the media object(s). Keywords 1 Brokerage Platforms; eToro; DeGiro; Plus500; Gamification; Play; Playthings. 1. Introduction heightened market volatility, with “gamification and user experience” being on top of the list [2]. Here and throughout most of the section, the On January 25 2021, a post on r/ phenomenon seems to be understood primarily as WallStreetBets, one of Reddit’s largest forums an interfacial feature (e.g. [3]), in what Deterding dedicated to “retail” trading (intended for names the “nudging” rhetoric of gamification. individuals buying and selling stocks), has The events of January 2021 revealed structural launched a community coordinated “short- deficiencies in the regulation of online brokerages squeeze” of the GameStop retail chain stock. The in both sides of the Atlantic, prompting action result was a novel power exerted over financial from the European Commission [4], the American markets, including major financial loses incurred Congress [2] and the self-regulatory association by established institutional actors who invested in of American brokers [5]. Game-like elements in GameStop losing value over time (“shorting”). On mass available trading software were at the core February 23rd 2021, the chairman of the European of this regulatory drive [6]. In this section we Securities and Markets Authorities (ESMA), review the two main lines of argument deployed Steven Maijoor, delivered a statement to the EU to criticise the supposed gamification of trading, Parliament on the short squeeze and its namely that these platforms encourage financial ramifications, where he singled out gamification behaviours standing against the best interests of as one of the driving causes of the market run [1, inexperienced traders (consumer welfare); and p. 3]. His American counterpart, Gary Glenser that the higher trading volume from retail users from the U.S. Securities and Exchange significantly dilutes the markets’ capacity for Commission (SEC), would quickly follow suit price-discovery and liquidity allocation (market during the congressional hearings around the quality). event. Glenser presented seven factors leading to 6th International GamiFIN Conference 2022 (GamiFIN 2022), April 26-29, 2022, Finland EMAIL: a.l.ferrraribraun@uva.nl (A.1); gekker@tauex.tau.ac.il (A.2). ORCID: 0000-0003-0133-0047 (A. 1); 0000-0001-6042- 2086 (A. 2) ©️ 2020 Copyright for this paper by its authors. Use permitted under Creative Commons License Attribution 4.0 International (CC BY 4.0). CEUR Workshop Proceedings (CEUR-WS.org) 115 In their extensive review of the FinTech However, a more economically oriented line of discourses on gamification [7] show that they argument has also flourished over the last year. hinge on a generational perspective that sees The number of retail investors has been on the rise game-like elements as crucial to include since 2012, a dynamic further accelerated by the millennials in the financial systems. The argument COVID-19 pandemic. As of 2020, even before the goes like this: the coming of age of those born GameStop Short Squeeze drove massive attention between 1980 and 2000 was characterised by both to these services, retail investors were already the 2008 Global Financial Crisis and the massive moving 20% of the total U.S. equities trading development of digital technologies [8]. volume [16]. The economical critique considers Millennials are the first “digital natives” while their (gamified) actions as “noise” [17], which do also sharing a distrust of traditional financial not reflect coherent strategies. When retail traders services. Gamification is presented as an answer start to command a significant part of the daily to this conundrum, using the logics of games to volume, their noise can affect the markets’ appeal to the rational pleasure-seeking impulsions capacity to discover prices and allocate capital. cultivated by digital platforms, and directing that According to legal scholar James Fallows Tierney energy into a financial sector [7, p. 10]. These [18, pp. 34-35], discourses present gamification as an effective method to foster financial literacy and inclusion, necessary to achieve full citizenship within the the combination of zero-commission trading neoliberal paradigm [9]. Far from being a mere and gamification may distort price discovery sales pitch, this perspective was embraced by processes by increasing both price movement political and legal institutions, that have actively and volatility in the stocks most popular among retail investors. […] Gamification encouraged the development of FinTech practices can capture retail investors’ platforms (REFS). attention and thereby induce trading in stocks A more critical approach accepts that for reasons—like the payoff that the gamification will increase financial inclusion, but intermediary receives from generating this warn that it can come at the cost of the users’ best order flow— that are unrelated to the “value” interests. The entire democratising drive is the investment offers. premised on including those who were previously uncatered to by traditional financial institutions [10], which also means that they tend to be The market-quality argument against the unsophisticated investors with little knowledge of gamification of trading uses similar evidence than the markets. The inclusion of features like the customer welfare one but pointing at wider personalised recommendation algorithms or push ramifications. “Noise” trades are conceptualised notifications encourage users to trade extensively, as both harmful for discrete individuals, and reacting to the stimuli put forward by the platform actively hindering the markets’ social function. and engaging in trading strategies that are very An appealing interface might look enticing, but it unlikely to yield benefits in the long run [11, 12]. could wreak havoc on our market-based society. Thus eththusiastic trading without professional The recent explosion of research and knowledge and tools produces the opposite regulatory endeavours on gamified trading proves outcome for novel traders [13, 14]. At the same beyond doubt that this is a salient issue in Western time, excessive trading disproportionately economies. However, much of the work relies on benefits the platform services, who obtain a rent the American day-trading platform Robinhood as through each trade that they intermediate. It is the main object of study. While the Californian therefore in their best interest to develop gamified platform has certainly experienced considerable features that increase user engagement [15]. This success since the mid-2010s, it remains based on perspective postulates that rather than fulfilling the United States and has failed to expand to other their duty of care towards novice investors, markets (REF). In Europe, a number of different trading platforms cynically encourage them to platforms have emerged, with offers better engage in behaviours contrary to their own interests through a series of gamified nudges. The consumer-welfare argument certainly is the most compelling, particularly when considering the stories of novice investors losing everything through a series of bad deals (REFS). 116 adapted to EU regulations, both in terms of offer2 the recent development of critical perspectives and customer protection. These platforms were seems to indicate that the times they are a- actively involved in events such as the GameStop changing. The extensive growth of retail trading Short Squeeze, which makes it even more in the last years can be indicative of further puzzling that the head of the ESMA only financial inclusion, but its price may have been mentioned Robinhood by name in the statement too high. Unsuspecting traders have lost huge that opened this section [1]. It is also worth quantities of money, and market devices have mentioning that Robinhood’s User Experience been put under pressure, during an already Design (UX) contains some of the most explicit challenging economic environment due to the gamified elements, such as free stocks and a slot pandemic. However, for these critiques to land machine simulator, which are largely absent from with further strength, more diverse case studies the majority of services. Perhaps more must be put forward and sophisticated importantly, Robinhood’s business model is understandings of play are needed. based on Payment For Order Flow (PFOF), an approach that allows the platform to redirect the 2. Methodology trades being made on the app to third-parties for execution. While some European services, like To analyse the presence of game-like elements the German TradeRepublic (REF), use PFOF, it is in trading platforms, we applied a walkthrough significantly less present in the EU than in America. It is illegal in some member countries, approach to eToro, DeGiro and Plus500, such as the Netherlands [21] and the European prominent European retail trading platforms Commission has indicated that it will ban it in all chosen based on popularity and complexity. From the Union soon [22]. Thus, putting too much the three, eToro is by far the largest, with over 20 emphasis on Robinhood as the only case study million users across five continents [25], DeGiro risks limiting our understanding of gamified and Plus500 have more modest userbases, counting 630.000 [26] and 430.00 [27] trading beyond this specific platform, particularly when considering the overall FinTech promise to respectively, at the time of writing. Still, these “democratise finance” [23]. numbers position them as some of the most On a more substantial level, the current popular platforms in the entire field. Out of the three, DeGiro is the most complex service, literature tends to focus too much on UX design requiring users to have some financial knowledge rather than posing deeper questions about the nature of games and play as reflected in broader before investing and presenting itself as a approaches to gamification. This choice can be allowing individual customers to access the same explained in practical terms: understanding operating logics as professionals [28]. Plus500, by trading as entertainment [24] is considerably more contrast, aims at providing “simplified, universal access to financial markets” [27, p. 9], by challenging for regulators than seeing it as a profit-seeking venture [18, pp. 21-22]. Yet, these exclusively focusing on a particular product: considerations still leave us with a blind spot Contracts For Difference (CFDs). eToro stands when it comes to defining the grammars of play somewhere in the middle of the two, offering a mobilised by these platforms. As [6, p. 725] large range of products to their clients, and championing a social media inspired aesthetic. briefly mention when arguing against regulation that exclusively focus on software affordances: Originally developed in the field of Human “games in general are not identified by the Computer Interaction to test usability, presence of particular features or elements, but by walkthroughs have recently been a Wittgensteinian “family resemblance” to other reconceptualised by new media scholars seeking games”. While we do not fully share their methodologies that allow in-depth engagements analytical approach, we do agree that definitions with apps [26, p. 10]. Despite their relative of gamification relying on normative novelty, several distinct approaches have already interpretations of software design choices are both been developed (e.g., [29]); here we decided to scholarly shallow and easy to circumvent. follow the post-phenomenological approach While pro-gamification perspectives have mapped out by [30, p. 3] James Ash, Ben been met with approval in professional sectors [7], Anderson, Rachel Gordon and Paul Langley. This 2 Perhaps the most salient example is the widespread adoption of owning the underlying asset [19], and the possibility of trading in Contracts For Difference (CFDs), a type of derivative product Forex [20]. allowing traders to bet on the course of a particular stock without 117 version of the method stresses the ways in which 3. Legibility and Friction in Retail “interfaces modulate user action”, focusing on the different units that compose the interface as a Trading whole. By doing so, we were able to interrogate the brokerage platforms’ interfaces as Despite the understandable differences in “assemblages of objects that are positioned and commercial positioning and brand identity, eToro, spaced in relation to one another in order to DeGiro and Plus500 share a core approach to transduce qualities for both other objects in the trading that is premised on their similar business interface and the user engaging with that model. As closed platforms, their goal is to interface” [31, p. 31]. Rather than analysing an develop an interfacial experience that multiplies interface as a complete and finished system, it transactions, which necessarily requires a heavy, stresses the relationality of its parts, and how they yet indirect, management of both information and are individually leveraged to generate a response user interaction [34, p. 22]. Our research showed from the user. that these two factors were central to the user As part of the walkthrough methodology, one experience with the platform yet had little if any of the authors traded daily on all three platforms connection to game-like elements. Instead, they throughout February and early March 2021. They combined highly visual elements, easily available constituted an investment portfolio based around texts and graphics, pop-ups that take little time to markets available in all three platforms and interact with, and tacit fillings of information. The moved them around to test the different interfacial amalgamation of these features generates two configurations made available by the platform3. crucial features. On the one hand, the markets Rather than trying to emulate what an average become legible even for the less financially user would do, they set out to explore the interface literate user; on the other, the potential frictions without taking into consideration any given [31] emerging at the moment of putting cash on trading strategy, instead focusing on the units the line are systemically reduced. mobilised by the interface at each time. Since our The most salient interfacial element of all three goal was to investigate the common denominators platforms were their spectacular displays of present in all platforms, we did not pay particular dynamic pricing, meaning the modulation of the attention to features specific to each service, like “commercial value of a product or service based the capacity of making public posts on eToro, or on perceived market conditions” [35, p. 4]. Each DeGiro’s combined orders. This is consistent with platform developed a similar approach to price [32, p. 8]’s strategy to focus on certain aspects of display, as exemplified by fig.1. Users are the interfacial experience while accepting that constantly subjected to a very visual arrangement others might not be part of the final research of information, in which price variations are output. In using the platforms, we sought out identified through green or red flashes, building specific interfacial elements that conformed (or on traditional trading floors visuals. It is easy to not) with previously outlined understandings of gain a sense of the general direction of a market gamification, namely: interactive elements that through a quick glance to the screen, and the use increase engagement based on extrinsic of vivid colours leaves no room for motivations. Particularly, we examined how the misunderstanding. This approach to price amalgamation of design features generate high- variation has two main advantages. It directs the level affordances, “the kinds of dynamics and user’s attentions to a couple of factors that are conditions enabled by technical devices, crucial for their engagement with the platform, platforms and media [...] the kinds of namely the prices at which they can buy or sell communicative practices and habits they enable positions, and the changes of the market on a or constrain” [33, p. 245). We will argue here that given timeframe. By constantly updating prices, the high-level affordances of brokerage platforms they provide a sense of inclusion in a high-speed are destined to generate legibility and reduce world where things are constantly changing. It is friction. common wisdom that investing in the financial markets is a matter of speed and timing [36]. The visual exaggeration of market shifts gives users 3 Out of privacy concerns, the screenshots of eToro and currency. DeGiro does not have this function, so the amounts Plus500 reproduced on this piece were taken in the platform’s traded where hidden when necessary. demo mode, which allows user to trade with an inexistent 118 the sense that they are active agents in the The spectacular display of pricing variations interconnected world of international finance. and the easily-accessible information on securities are part of the high-level affordance that we call “legibility”. One of the main challenges that brokerage platforms face is the intrinsic complexity of financial markets. As critical perspectives on finance have noted time and time again (e.g. [37]), the alienating nature of financial information derives both from the intrinsic complexity of an international infrastructure and from an ideological drive to keep the markets’ inner workings as complex as possible. Without necessarily affording more clarity into those inner workings, brokerage platforms need to reduce that Figure 1: Price variations on the watchlist screen alienation. If we were to follow the gamification of eToro hypothesis, this reduction would entail the usage of game-like elements. However, in reality, they The initial visual inclusion is then completed generate legibility through visual exaggerations of by the platforms’ complementary offer of market trends and easily-available financial financial news to all their users. Each one of them information, all of which are displayed in the have a page devoted to each available security, familial environment of a platform. Legibility providing general data about its performance. does not emerge from game elements; it emerges These market profiles contain basic information, from carefully curated access to information. including their price, variations on different time The second element that brokerage platforms frames and, if they are related to a company, their need to manage is friction. After [32, p. 3], we market cap. Popular securities often have their understand friction as “bodily and technical own news aggregator, that collects news articles obstacles or hesitancies that interrupt, slow or stop on the security in real time. These small reports a user from completing a task within a digital offer a condensed overlook into the behaviour of interface, such as choosing a service or buying a a stock, which are both easier to understand than product”. This friction is particularly present complex technical profiles, and considerably during thresholds, the “necessary moment or point easier to access, since it only requires two clicks in interfaces that a designer needs to encourage to go form the home screen to a security’s page. the user to cross or move beyond. Always The information offered by the platforms cannot involving some kind of movement, thresholds are be described as pathbreaking in any meaningful occasions of discontinuity within an interface” way: anybody with an internet connection can [31, p. 6]. If generating legibility as a high-level find the same data on websites like Yahoo affordance is necessary for brokerage platforms to Finance, The Motley Fool or MarketWatch. Their get users to interact with the financial markets, direct integration within the interface, however, is reducing friction to a minimum is fundamental to crucial to lower the threshold to interact with get them to trade. As mentioned in above, the financial information. At the same time, the business model of these services is based on organisation of information shows the priorities of exploiting the spread, the more users trade, the the platforms: as brokerages, they are mainly more revenue is generated for the platforms. interested in pushing the users to trade. Behavioural economists have pointed out (e.g. Information is thus structured around securities, [11], [24], [38]) that users of brokerage platforms rather than providing a sense of the macro-trends tend to trade considerably more than other agents; in the markets, as more advanced software like the we argue that this is due to the interfacial Bloomberg Professional Services would do. By reduction of friction. adding a news-aggregator feature to their activity Entering a trade is the most obvious example as brokerages, these services are fully leveraging of a threshold. To reduce potential hesitancy, the the possibilities of the platform structure, three platforms decided to use a pop-up system integrating different, formerly distinct, elements whereby the object enabling trading appears into one experience. superimposed to the screen in which it was opened (fig. 2). eToro and Plus500 go as far as to automatically propose a certain number of stocks 119 (known as “position”) to the users, as little as 20€ or even 1€. Depositing money is algorithmically designed to fit their profile. Some the biggest threshold for retail trading platforms, basic variables are included in these screens, such the moment in which users decide to put their cash as the possibility to automatically close a position on the line. One could think that these screens in case of loses or earnings surpassing a certain would be the most detailed ones, but as fig. 3 amount. Once the user has entered the values that shows, they are some of the most understated, they would like to purchase or sale, they only have with bare minimal elements. Once again, the to click on a big – distinctly coloured - button to specifics of the transaction are rendered invisible execute the trade. Users are not able to decipher by the interface, and users are only required to from any of these screens who they are trading acquiesce or slightly modify parameters that have with and how the positions they bought will already been chosen for them. become theirs. The use of pop-ups and the underlying presence of other screens when the deals commence present the central activity of the platform - trading - as a relatively minor activity. Far from being the central interfacial experience, as one could expect, it is presented as a formality that is not meant to cost too much time, implicitly assuming that users already know what they want when they open a trading window. By doing so, the platforms reduce friction at a core moment of engagement (committing one’s money to the Figure 3: Deposit screen in the eToro desktop market) and integrate this crucial aspect into the version. overall flow of the interface. By generating legibility and reducing friction, brokerage platforms create an interfacial regime in which anybody with a passing knowledge of finance can engage with the markets. This drive to popularise access to finance, removing knowledge and operational barriers, is at the core of the FinTech business model [37]. However, as opposed to what the proliferation of discourses on the gamification of trading may led to believe, game-like elements are altogether absent from the Figure 2: Trading screen opened to buy a position core interfacial of these platforms. Confronted on Tesla, on the right side of the interface, in the with a lack of empirical evidence, the validity of Plus500 desktop version. these discourses is called into question, forcing us to consider a different approach to their The same streamlined approach characterises playfulness. the deposit of funds. All platforms accept several forms of payment, including PayPal, iDeal 4. Conclusion (regional Dutch e-payment service), bank transfer and credit card wiring, and they all have The GameStop Short-Squeeze highlighted the predetermined amounts that can be automatically role of brokerage platforms in amateur trading. charged. Plus500 automatically suggested to Hardly a week has gone by in 2021 without a new deposit 500€, while eToro prefilled the form for type of financial scandal containing a conspicuous the value of 1000€; DeGiro did not have a element of playfulness. Heated trading of stock in prefilled form, but had buttons to add 1000€, companies like AMC Entertainment or 2000€, 5000€ and 10000€. This is particularly BlackBerry among retail investors [40], the interesting when considering that DeGiro, as phenomenon of so-called “shitcoins” [41], or the opposed to the other two, does not require users to exponential appreciation of Bored Apes Non- deposit a minimal amount to trade: while it Fungible Tokens [42], all seemingly combine into encourages newcomers to invest up to 10000€, the a series of “gameful” interactions with the same users could access the same functions with financial markets. At the same time, a continuous 120 critique has been levied by industry and https://ec.europa.eu/commission/pressco academics alike regarding the hazards of such rner/detail/en/ip_21_6251. practices to both amateur investors (consumer [5] FINRA, Report, 2021 Report on FINRA’s welfare) and the established financial flows as a Examination and Risk Monitoring whole (market quality) Yet, as our comparative Program, 2021. URL: research of eToro, DeGiro and Plus500 shows, rather than gamefulness per se, the apps excel at https://www.finra.org/sites/default/files/ the management of the legibility of financial 2021-02/2021-report-finras- markets, through the friction (slowing down or examination-risk-monitoring- speeding up) certain aspects of the trading program.pdf. experience. [6] Langvardt, J. F. Tierney, On ‘Confetti While gamification seems like a popular (and Regulation’: The Wrong Way to somewhat populist) explanation of the apps’ Regulate Gamified Investing, The Yale success, the resulting picture is more complex. Law Journal Forum, vol. 131, pp. 717 – Instead, the aforementioned apps allow for a form 741 (2021). of collective power exertion of the financial [7] A. Van der Heide, D. Želinský, ‘Level up markets by presenting retail traders with the your money game’: An analysis of information and capacities up until very recently reserved for major institutional players only. If gamification discourse in financial any, instead of providing extrinsic rewards services, Journal of Cultural Economy, contingent on the apps logic, the retail traders pp. 1–21 (2021). “level up” by “playing” the markets correctly. [8] D. Takahashi, Article, TradeOff gamifies fantasy stock market trading to teach financial skills, VentureBeat, 1. January 5. References 2020, 2020. URL: https://venturebeat.com/2020/01/01/trad [1] European Securities and Markets eoff-gamifies-fantasy-stock-market- Autority, Introductory statement, ECON trading-to-teach-financial- Exchange of views in relation to skills/?fbclid=IwAR2r7o1Pxh3o1jUpbC GameStop share trading and related m7mynrtqipRBGb67Ni5Ye1NIYXVTF phenomena, 2021. URL: P_NInj_69l7E. https://www.esma.europa.eu/sites/defaul [9] P. Langley, Uncertain Subjects of Anglo- t/files/library/esma22-105- American Financialization, Cultural 1307_introductory_statement_on_games Critique, vol. 65, pp. 67–91 (2007). top_share_trading_-_steven_maijoor.pdf [10] A. Brown, Article, Robinhood Is Not [2] SEC, Article, Testimony Before the House Gamifying Markets. It’s Democratizing Committee on Financial Services, 2021. Them, in Bloomberg, 18. December URL: 2020, 2020. URL: https://www.sec.gov/news/testimony/gensler https://www.bloomberg.com/opinion/art -testimony-20210505. icles/2020-12-17/robinhood-is- [3] S. Deterding, D. Dixon, R. Khaled, L. democratizing-markets-not-making- Nacke, From game design elements to them-a-game gamefulness: Defining ‘gamification, in: [11] R. Reith, M. Fisher, B. Lis, Explaining Proceedings of the 15th International the intention to use social trading Academic MindTrek Conference: platforms: an empirical investigation, Envisioning Future Media Journal of Business Economics, vol. 90, Environments, pp. 9-15 (n.d.) pp. 427 – 460 (2019). [4] European Commission, Capital Markets [12] B. M. Barber, X. Huang, T. Odean, C. Union: Commission proposes new Schwarz, Attention Induced Trading and measures to boost Europe's capital Returns: Evidence from Robinhood markets, 2021. URL: Users, Journal of Finance, (forthcoming). Available: 121 https://papers.ssrn.com/sol3/papers.cfm? https://www.taylorwessing.com/en/insig abstract_id=3715077. hts-and- events/insights/2021/12/payment-for- [13] B. Barber, Y.-T. Lee, Y.-J. Liu and T. order-flow- Odean, Just How Much Do Individual ban#:~:text=Under%20PFOF%2C%20b Investors Lose By Trading?, Review of rokers%20route%20their,that%20execut Financial Studies, vol. 22, no. 2, (2009). es%20the%20client's%20order. Available: 10.2139/ssrn.529062. [23] P. Langley, A. Leyshon, The Platform [14] B. Barber, Y.-T. Lee, Y.-J. Liu and T. Political Economy of FinTech: Odean, The cross-section of speculator Reintermediation, Consolidation and skill: Evidence from day trading, Journal Capitalisation, New Political Economy, of Financial Markets, vol. 18, pp. 1-24 pp. 1–13 (2020). (2014). Available: [24] D. Dorn, P. Sengmueller, Trading as 10.1016/j.finmar.2013.05.006. Entertainment. Management Science, [15] G. K. S. Tan, Democratizing finance vol. 55, no. 4, pp. 591 – 603 (2009). with Robinhood: Financial [25] eToro, Article, Here’s To 20 Million infrastructure, interface design and eToro Users!, 2021. URL: platform capitalism, Environment and https://www.etoro.com/news-and- Planning A: Economy and Space, vol. 53, analysis/etoro-updates/20m-users. no. 8, pp. 1862–1878 (2021). [26] DeGiro, Press & Figures, 2021. [16] C. McCabe, It Isn’t Just AMC, Retail Retrieved from: Traders Increase Pull on the Stock https://www.degiro.co.uk/about- Market. The Wall Street Journal, 18. June degiro/news-and-press 2021, 2021. URL: [27] Plus500, Report, Annual Report. 2020. https://www.wsj.com/articles/it-isnt- URL: just-amc-retail-traders-increase-pull-on- https://cdn.plus500.com/media/Investors the-stock-market-11624008602. /Reports/Plus500_Annual_Report_20.pd [17] F. Black, Noise, The Journal of Finance, f. vol. 41, no. 3, pp. 528-543 (1986). [28] DeGiro, About DeGiro, 2021. Retrieved [18] J. F. Tierney, Investment Games, Duke from: https://www.degiro.co.uk/about- Law Journal, (forthcoming). URL: degiro. https://papers.ssrn.com/sol3/papers.cfm? [29] T. Mahatody, S. Mouldi and C. Kolski, abstract_id=3916407. State of the Art on the Cognitive [19] D. J. Norman, CFDs: The Definitive Walkthrough Method, Its Variants and Guide to Contracts for Difference, Evolutions, International Journal of Harriman House Limited, Bedford, UK, Human–Computer Interaction, 26 (8), 2009. 741-785 (2010). [20] A. Preda, Noise: Living and Trading in [30] M. Dieter, D. Tkacz, The Patterning of Electronic Finance, University of Finance/Security: A Designerly Chicago Press, Chicago, IL, USA, 2017. Walkthrough of Challenger Banking [21] Dutch Authority for the Financial Apps. Computational Cultures, vol. 7 Markets (AFM), Article, AFM examines (2020). quality of order execution on PFOF [31] J. Ash, The Interface Envelope: Gaming, trading venues, 2022. URL: Technology, Power, Bloomsbury https://www.afm.nl/en/professionals/nie Academic, London, UK, 2015. uws/2022/februari/kwaliteit- orderuitvoering-pfof. [32] J. Ash, B. Anderson, R. Gordon and P. [22] TaylorWessing, Article, Payment for Langley, Digital interface design and order flow ban: EU regulators set to power: Friction, threshold, transition, follow the UK's approach, 2021. URL: Environment and Planning D: Society 122 and Space, vol. 36, no. 6, pp. 1136-1153 Pump-and-Dump Schemes Go Digital, (2018). Available: Bloomberg, 2021. URL: 10.1177/0263775818767426. https://www.bnnbloomberg.ca/crypto- [33] T. Bucher, A. Helmond, The scammers-rip-off-billions-as-pump-and- Affordances of Social Media Platforms, dump-schemes-go-digital-1.1626890. in: J. Burgess, T. Poell, A. Marwick [42] S. Hissong, Article, How Four NFT (Ed.), The SAGE Handbook of Social Novices Created a Billion-Dollar Media, SAGE Publications Ltd, Ecosystem of Cartoon Apes, Rolling Newbury Park, CA, USA, 2018. Stone, 2021. URL: [34] P. Langley, A. Leyshon, Platform https://www.rollingstone.com/culture/cu capitalism: The intermediation and lture-news/bayc-bored-ape-yacht-club- capitalisation of digital economic nft-interview-1250461/ circulation. Finance and Society, vol. 3, no. 1, pp. 11-31 (2017). [35] A. Shapiro, Dynamic Exploits: The Science of Worker Control in the On- Demand Economy, Media, Inequality & Change Center, 2019. Retrieved from https://mic.asc.upenn.edu/wp- content/uploads/2020/07/DynamicExplo its_Final1.pdf [36] F. Nicoll, Finopower: Governing Intersections Between Gambling and Finance, Communication and Critical/Cultural Studies, vol. 10, no. 4, pp. 385–405 (2013). [37] H. Ortiz, The Limits of Financial Imagination: Free Investors, Efficient Markets, and Crisis, American Anthropologist, vol. 116, no. 1, pp. 38– 50 (2014). [38] D. Y. Aharon and M. Qadan, When do retail investors pay attention to their trading platforms?, The North American Journal of Economics and Finance, vol. 53, p. 101209 (2020). Available: 10.1016/j.najef.2020.101209. [39] P. Langley, A. Leyshon, The Platform Political Economy of FinTech: Reintermediation, Consolidation and Capitalisation, New Political Economy, pp. 1–13 (2020). [40] M. Levine, Spend Your Bitcoins at the GameStop in the AMC, Bloomberg, 2021. URL: https://www.bloomberg.com/opinion/art icles/2021-08-10/spend-your-bitcoins- at-the-gamestop-in-the-amc. [41]M. Egkolfopoulou, C. Wells, Article, Crypto Scammers Rip Off Billions as 123