ABSTRACT

As cryptocurrencies gain popularity and credibility, marketplaces for cryptocurrencies are growing in importance. Understanding the dynamics of these markets can help to assess how viable the cryptocurrnency ecosystem is and how design choices affect market behavior. One existential threat to cryptocurrencies is dramatic fluctuations in traders' willingness to buy or sell. Using a novel experimental methodology, we conducted an online experiment to study how susceptible traders in these markets are to peer influence from trading behavior. We created bots that executed over one hundred thousand trades costing less than a penny each in 217 cryptocurrencies over the course of six months. We find that individual "buy" actions led to short-term increases in subsequent buy-side activity hundreds of times the size of our interventions. From a design perspective, we note that the design choices of the exchange we study may have promoted this and other peer influence effects, which highlights the potential social and economic impact of HCI in the design of digital institutions.
References
- Andrés Abeliuk, Gerardo Berbeglia, Pascal Van Hentenryck, Tad Hogg, and Kristina Lerman. 2017. Taming the Unpredictability of Cultural Markets with Social Influence. In Proceedings of the 26th International Conference on World Wide Web (WWW). International World Wide Web Conferences Steering Committee, 745--754. Google Scholar
Digital Library
- Lisa R Anderson and Charles A Holt. 1997. Information Cascades in the Laboratory. The American Economic Review (1997), 847--862.Google Scholar
- Judd Antin and Aaron D. Shaw. 2012. Social Desirability Bias and Self-reports of Motivation: A Study of Amazon Mechanical Turk in the US and India. In Proceedings of the ACM Conference on Human Factors in Computing Systems (CHI). Google Scholar
Digital Library
- Christopher Avery and Peter Zemsky. 1998. Multidimensional Uncertainty and Herd Behavior in Financial Markets. American Economic Review (1998), 724--748.Google Scholar
- Eytan Bakshy, Dean Eckles, and Michael S Bernstein. 2014. Designing and Deploying Online Field Experiments. In Proceedings of the 23rd International Conference on World Wide Web (WWW). ACM, 283--292. Google Scholar
Digital Library
- Eytan Bakshy, Matthew P. Simmons, David A. Huffaker, Chun-Yuen Cheng, and Lada A. Adamic. 2010. The Social Dynamics of Economic Activity in a Virtual World. In International Conference on Weblogs and Social Media (ICWSM).Google Scholar
- Abhijit V Banerjee. 1992. A Simple Model of Herd Behavior. The Quarterly Journal of Economics (1992), 797--817.Google Scholar
- Brad M Barber and Terrance Odean. 2008. All that Glitters: The Effect of Attention and News on the Buying Behavior of Individual and Institutional Investors. Review of Financial Studies 21, 2 (2008), 785--818.Google Scholar
Cross Ref
- Nicholas Barberis and Richard Thaler. 2003. A Survey of Behavioral Finance. Handbook of the Economics of Finance 1 (2003), 1053--1128.Google Scholar
Cross Ref
- Yochai Benkler. 2012. The Penguin and the Leviathan: Towards Cooperative Human Systems Design. In The ACM Conference on Computer-Supported Cooperative Work and Social Computing (CSCW). Google Scholar
Digital Library
- Sushil Bikhchandani, David Hirshleifer, and Ivo Welch. 1992. A Theory of Fads, Fashion, Custom, and Cultural Change as Informational Cascades. Journal of Political Economy 100, 5 (1992), 992--1026.Google Scholar
Cross Ref
- Sushil Bikhchandani and Sunil Sharma. 2000. Herd Behavior in Financial Markets. IMF Staff Papers (2000), 279--310.Google Scholar
- Robert M Bond, Christopher J Fariss, Jason J Jones, Adam DI Kramer, Cameron Marlow, Jaime E Settle, and James H Fowler. 2012. A 61-Million-person Experiment in Social Influence and Political Mobilization. Nature 489, 7415 (2012), 295--298.Google Scholar
- Jamal Bouoiyour, Refk Selmi, Aviral Kumar Tiwari, Olaolu Richard Olayeni, and others. 2016. What Drives Bitcoin Price? Economics Bulletin 36, 2 (2016), 843--850.Google Scholar
- Barry A. T. Brown, Alexandra Weilenmann, Donald McMillan, and Airi Lampinen. 2016. Five Provocations for Ethical HCI Research. In Proceedings of the ACM Conference on Human Factors in Computing Systems (CHI). Google Scholar
Digital Library
- Patrick Buckley and Fergal O'Brien. 2015. The Effect of Malicious Manipulations on Prediction Market Accuracy. Information Systems Frontiers (2015), 1--13. Google Scholar
Digital Library
- Colin F Camerer. 1998. Can Asset Markets be Manipulated? A Field Experiment with Racetrack Betting. Journal of Political Economy 106, 3 (1998), 457--482.Google Scholar
Cross Ref
- John M. Carroll and Victoria Bellotti. 2015. Creating Value Together: The Emerging Design Space of Peer-to-Peer Currency and Exchange. In The ACM Conference on Computer-Supported Cooperative Work and Social Computing (CSCW). Google Scholar
Digital Library
- Christophe Chamley. 2004. Rational Herds: Economic Models of Social Learning. Cambridge University Press.Google Scholar
- Eng-Tuck Cheah and John Fry. 2015. Speculative Bubbles in Bitcoin Markets? An Empirical Investigation into the Fundamental Value of Bitcoin. Economics Letters 130 (2015), 32--36.Google Scholar
Cross Ref
- Marco Cipriani and Antonio Guarino. 2005. Herd Behavior in a Laboratory Financial Market. American Economic Review (2005), 1427--1443.Google Scholar
- Marco Cipriani and Antonio Guarino. 2009. Herd Behavior in Financial Markets: An Experiment with Financial Market Professionals. Journal of the European Economic Association 7, 1 (2009), 206--233.Google Scholar
Cross Ref
- Nicola Dell and Neha Kumar. 2016. The Ins and Outs of HCI for Development. In Proceedings of the ACM Conference on Human Factors in Computing Systems (CHI). Google Scholar
Digital Library
- Paul Dourish. 2010. HCI and Environmental Sustainability: The Politics of Design and the Design of Politics. In Proceedings of the 8th ACM Conference on Designing Interactive Systems. Google Scholar
Digital Library
- Mathias Drehmann, Jorg Oechssler, and Andreas Roider. 2005. Herding and Contrarian Behavior in Financial Markets: An Internet Experiment. American Economic Review (2005).Google Scholar
- Abeer ElBahrawy, Laura Alessandretti, Anne Kandler, Romualdo Pastor-Satorras, and Andrea Baronchelli. 2017. Evolutionary dynamics of the cryptocurrency market. Royal Society Open Science 4, 11 (2017), 170623.Google Scholar
Cross Ref
- Guo Freeman, Jeffrey Bardzell, Shaowen Bardzell, and Susan C. Herring. 2015. Simulating Marriage: Gender Roles and Emerging Intimacy in an Online Game. In The ACM Conference on Computer-Supported Cooperative Work and Social Computing (CSCW). Google Scholar
Digital Library
- Neil Gandal and Hanna Halaburda. 2014. Competition in the Cryptocurrency Market. Bank of Canada Working Paper 2014--33 (2014).Google Scholar
- Neil Gandal, JT Hamrick, Tyler Moore, and Tali Oberman. 2017. Price Manipulation in the Bitcoin Ecosystem. Journal of Monetary Economics (2017).Google Scholar
- David Garcia and Frank Schweitzer. 2015. Social Signals and Algorithmic Trading of Bitcoin. Royal Society Open Science 2, 9 (2015), 150288.Google Scholar
Cross Ref
- Eric Gilbert and Karrie Karahalios. 2010. Widespread Worry and the Stock Market. In International Conference on Weblogs and Social Media (ICWSM). 59--65.Google Scholar
- Mareike Glöss, Moira McGregor, and Barry A. T. Brown. 2016. Designing for Labour: Uber and the On-Demand Mobile Workforce. In Proceedings of the ACM Conference on Human Factors in Computing Systems (CHI). Google Scholar
Digital Library
- Jonathan Grudin. 1988. Why CSCW Applications Fail: Problems in the Design and Evaluation of Organization of Organizational Interfaces. In The ACM Conference on Computer-Supported Cooperative Work and Social Computing (CSCW). Google Scholar
Digital Library
- Junius Gunaratne, Jeremy Burke, and Oded Nov. 2017. Empowering Investors with Social Annotation When Saving for Retirement.. In Proceedings of the ACM Conference on Computer-Supported Cooperative Work (CSCW). Google Scholar
Digital Library
- Junius Gunaratne and Oded Nov. 2015. Informing and Improving Retirement Saving Performance Using Behavioral Economics Theory-driven User Interfaces. In Proceedings of the ACM Conference on Human Factors in Computing Systems (CHI). Google Scholar
Digital Library
- Robin Hanson, Ryan Oprea, and David Porter. 2006. Information Aggregation and Manipulation in an Experimental Market. Journal of Economic Behavior & Organization 60, 4 (2006), 449--459.Google Scholar
Cross Ref
- Ward A Hanson and Daniel S Putler. 1996. Hits and Misses: Herd Behavior and Online Product Popularity. Marketing Letters 7, 4 (1996), 297--305.Google Scholar
Cross Ref
- Ellie Harmon, Chris Bopp, and Amy Voida. 2017. The Design Fictions of Philanthropic IT: Stuck Between an Imperfect Present and an Impossible Future. In Proceedings of the ACM Conference on Human Factors in Computing Systems (CHI). Google Scholar
Digital Library
- John Harvey, David Golightly, and Andrew Smith. 2014. HCI as a Means to Prosociality in the Economy. In Proceedings of the ACM Conference on Human Factors in Computing Systems (CHI). Google Scholar
Digital Library
- Adam S Hayes. 2016. Cryptocurrency Value Formation: An Empirical Study Leading to a Cost of Production Model for Valuing Bitcoin. Telematics and Informatics (2016). Google Scholar
Digital Library
- David Hirshleifer and Siew Hong Teoh. 2003. Herd Behaviour and Cascading in Capital Markets: A Review and Synthesis. European Financial Management 9, 1 (2003), 25--66.Google Scholar
Cross Ref
- Nathan Oken Hodas and Kristina Lerman. 2012. How Visibility and Divided Attention Constrain Social Contagion. In Privacy, Security, Risk and Trust (PASSAT), 2012 International Conference on and 2012 International Confernece on Social Computing (SocialCom). IEEE, 249--257. Google Scholar
Digital Library
- Clayton J Hutto, Sarita Yardi, and Eric Gilbert. 2013. A Longitudinal Study of Follow Predictors on Twitter. In Proceedings of the SIGCH Conference on Human Factors in Computing Systems (CHI). ACM, 821--830. Google Scholar
Digital Library
- Lilly Irani, Janet Vertesi, Paul Dourish, Kavita Philip, and Rebecca E. Grinter. 2010. Postcolonial Computing: A Lens on Design and Development. In Proceedings of the ACM Conference on Human Factors in Computing Systems (CHI). Google Scholar
Digital Library
- Karim Jabbar and Pernille Bjørn. 2017. Growing the Blockchain Information Infrastructure. In Proceedings of the ACM Conference on Human Factors in Computing Systems (CHI). Google Scholar
Digital Library
- Narasimhan Jegadeesh and Sheridan Titman. 1993. Returns to Buying Winners and Selling Losers: Implications for Stock Market Efficiency. The Journal of Finance 48, 1 (1993), 65--91.Google Scholar
Cross Ref
- Narasimhan Jegadeesh and Sheridan Titman. 2001. Profitability of Momentum Strategies: An Evaluation of Alternative Explanations. The Journal of Finance 56, 2 (2001), 699--720.Google Scholar
Cross Ref
- Aniket Kittur, Jeffrey V Nickerson, Michael Bernstein, Elizabeth Gerber, Aaron Shaw, John Zimmerman, Matt Lease, and John Horton. 2013. The Future of Crowd Work. In The ACM Conference on Computer-Supported Cooperative Work and Social Computing (CSCW). Google Scholar
Digital Library
- Peter M Krafft, Michael Macy, and Alex Pentland. 2017. Bots as Virtual Confederates: Design and Ethics. The 20th ACM Conference on Computer-Supported Cooperative Work and Social Computing (CSCW) (2017). Google Scholar
Digital Library
- Sanjay Krishnan, Jay Patel, Michael J Franklin, and Ken Goldberg. 2014. A Methodology for Learning, Analyzing, and Mitigating Social Influence Bias in Recommender Systems. In Proceedings of the 8th ACM Conference on Recommender Systems. ACM, 137--144. Google Scholar
Digital Library
- Ladislav Kristoufek. 2013. BitCoin meets Google Trends and Wikipedia: Quantifying the Relationship between Phenomena of the Internet Era. Scientific Reports 3 (2013), 3415.Google Scholar
Cross Ref
- Ladislav Kristoufek. 2015. What are the Main Drivers of the Bitcoin Price? Evidence from Wavelet Coherence Analysis. PLoS ONE 10, 4 (2015), e0123923.Google Scholar
Cross Ref
- Airi Lampinen and Barry Brown. 2017. Market Design for HCI: Successes and Failures of Peer-to-Peer Exchange Platforms. In Proceedings of the ACM Conference on Human Factors in Computing Systems (CHI). ACM, 4331--4343. Google Scholar
Digital Library
- Airi Lampinen and Coye Cheshire. 2016. Hosting via Airbnb: Motivations and Financial Assurances in Monetized Network Hospitality. In Proceedings of the ACM Conference on Human Factors in Computing Systems (CHI). Google Scholar
Digital Library
- Alex Leavitt and Joshua A Clark. 2014. Upvoting Hurricane Sandy: Event-based News Production Processes on a Social News Site. In Proceedings of the 32nd Annual ACM Conference on Human Factors in Computing Systems (CHI). ACM, 1495--1504. Google Scholar
Digital Library
- Kristina Lerman and Tad Hogg. 2010. Using a Model of Social Dynamics to Predict Popularity of News. In Proceedings of the 19th International Conference on World Wide Web. ACM, 621--630. Google Scholar
Digital Library
- Andrew W Lo and A Craig MacKinlay. 2002. A Non-random Walk Down Wall Street. Princeton University Press.Google Scholar
- Alec MacDonell. 2014. Popping the Bitcoin Bubble: An Application of Log-periodic Power Law Modeling to Digital Currency. University of Notre Dame Working Paper (2014).Google Scholar
- Burton G Malkiel. 2003. The Efficient Market Hypothesis and its Critics. The Journal of Economic Perspectives 17, 1 (2003), 59--82.Google Scholar
Cross Ref
- Thomas W Malone and Kevin Crowston. 1990. What is Coordination Theory and How Can it Help Design Cooperative Work Systems?. In Proceedings of the ACM Conference on Computer-Supported Cooperative Work (CSCW). Google Scholar
Digital Library
- Thomas W. Malone, Jeffrey V. Nickerson, Rob Laubacher, Laur Hesse Fisher, Patrick M. De Boer, Yue Han, and W. Ben Towne. 2017. Putting the Pieces Back Together Again: Contest Webs for Large-Scale Problem Solving. In The ACM Conference on Computer-Supported Cooperative Work and Social Computing (CSCW). Google Scholar
Digital Library
- Lev Muchnik, Sinan Aral, and Sean J Taylor. 2013. Social Influence Bias: A Randomized Experiment. Science 341, 6146 (2013), 647--651.Google Scholar
- Saralees Nadarajah and Jeffrey Chu. 2017. On the Inefficiency of Bitcoin. Economics Letters 150 (2017), 6--9.Google Scholar
Cross Ref
- Stefan Palan. 2013. A Review of Bubbles and Crashes in Experimental Asset Markets. Journal of Economic Surveys 27, 3 (2013), 570--588.Google Scholar
Cross Ref
- Satu S Parikh and Gerald L Lohse. 1995. Electronic Futures Markets Versus Floor Trading: Implications for Interface Design. In Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (CHI). Google Scholar
Digital Library
- Larissa Pschetz, Ella Tallyn, Rory Gianni, and Chris Speed. 2017. Bitbarista: Exploring Perceptions of Data Transactions in the Internet of Things. In Proceedings of the ACM Conference on Human Factors in Computing Systems (CHI). Google Scholar
Digital Library
- PW Rhode and KS Strumpf. 2006. Manipulating Political Stock Markets: A Field Experiment and a Century of Observational Data. (2006).Google Scholar
- K Geert Rouwenhorst. 1998. International Momentum Strategies. The Journal of Finance 53, 1 (1998), 267--284.Google Scholar
Cross Ref
- Matthew J Salganik. 2017. Bit by Bit: Social Research in the Digital Age. Princeton University Press.Google Scholar
- Matthew J Salganik, Peter Sheridan Dodds, and Duncan J Watts. 2006. Experimental Study of Inequality and Unpredictability in an Artificial Cultural Market. Science 311, 5762 (2006), 854--856.Google Scholar
- Corina Sas and Irni Eliana Khairuddin. 2017. Design for Trust: An Exploration of the Challenges and Opportunities of Bitcoin Users. In Proceedings of the ACM Conference on Human Factors in Computing Systems (CHI). Google Scholar
Digital Library
- Saiph Savage, Andres Monroy-Hernandez, and Tobias Höllerer. 2016. Botivist: Calling Volunteers to Action Using Online Bots. In Proceedings of the 19th ACM Conference on Computer-Supported Cooperative Work & Social Computing (CSCW). ACM, 813--822. Google Scholar
Digital Library
- Aaron D. Shaw, John J. Horton, and Daniel L. Chen. 2011. Designing Incentives for Inexpert Human Raters. In The ACM Conference on Computer-Supported Cooperative Work and Social Computing (CSCW). Google Scholar
Digital Library
- Dawei Shen, Marshall W. van Alstyne, Andrew Lippman, and Hind Benbya. 2012. Barter: Mechanism Design for a Market Incented Wisdom Exchange. In The ACM Conference on Computer-Supported Cooperative Work and Social Computing (CSCW). Google Scholar
Digital Library
- Robert J Shiller. 1981. Do Stock Prices Move Too Much to be Justified by Subsequent Changes in Dividends? The American Economic Review (1981).Google Scholar
- Ruben Sipos, Arpita Ghosh, and Thorsten Joachims. 2014. Was this Review Helpful to You?: It Depends! Context and Voting Patterns in Online Content. In Proceedings of the 23rd International Conference on World Wide Web (WWW). ACM, 337--348. Google Scholar
Digital Library
- Vernon L Smith, Gerry L Suchanek, and Arlington W Williams. 1988. Bubbles, Crashes, and Endogenous Expectations in Experimental Spot Asset Markets. Econometrica: Journal of the Econometric Society (1988), 1119--1151.Google Scholar
- Spyros Spyrou. 2013. Herding in Financial Markets: A Review of the Literature. Review of Behavioral Finance 5, 2 (2013), 175--194.Google Scholar
Cross Ref
- Andrew Urquhart. 2016. The Inefficiency of Bitcoin. Economics Letters 148 (2016), 80--82.Google Scholar
Cross Ref
- Arnout van de Rijt, Soong Moon Kang, Michael Restivo, and Akshay Patil. 2014. Field Experiments of Success-breeds-success Dynamics. Proceedings of the National Academy of Sciences 111, 19 (2014), 6934--6939.Google Scholar
Cross Ref
- Helena Veiga and Marc Vorsatz. 2009. Price Manipulation in an Experimental Asset Market. European Economic Review 53, 3 (2009), 327--342.Google Scholar
Cross Ref
- Helena Veiga and Marc Vorsatz. 2010. Information Aggregation in Experimental Asset Markets in the Presence of a Manipulator. Experimental Economics 13, 4 (2010), 379--398.Google Scholar
Cross Ref
- John Vines, Rachel Clarke, Peter C. Wright, John C. McCarthy, and Patrick Olivier. 2013. Configuring Participation: On How We Involve People in Design. In Proceedings of the ACM Conference on Human Factors in Computing Systems (CHI). Google Scholar
Digital Library
- Halbert White. 1980. A Heteroskedasticity-consistent Covariance Matrix Estimator and a Direct Test for Heteroskedasticity. Econometrica: Journal of the Econometric Society (1980), 817--838.Google Scholar
- Wenbin Zhang and Steven Skiena. 2010. Trading Strategies to Exploit Blog and News Sentiment. In International Conference on Weblogs and Social Media (ICWSM).Google Scholar
- Xinyi Zhang, Shiliang Tang, Yun Zhao, Gang Wang, Haitao Zheng, and Ben Y. Zhao. 2017. Cold Hard e-Cash: Friends and Vendors in the Venmo Digital Payments System. In International Conference on Weblogs and Social Media (ICWSM).Google Scholar
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(auto-classified)An Experimental Study of Cryptocurrency Market Dynamics





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