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A Modern Take on Market Efficiency: The Impact of Trump’s Tweets on Financial Markets
(2021-05-06)
We focus on the role of social media as a high-frequency, unfiltered mass information transmission channel and how its use for government communication affects the aggregate stock markets. To measure this effect, we ...
Market impact of government communication: The case of presidential tweets
(2021-10-06)
"We propose the ""President reacts to news"" channel of stock returns by studying the financial market impact of the Twitter account of the 45th president of the United States, Donald Trump. We use machine learning algorithms ...
Call of duty: Designated market maker participation in call auctions
(2021-08-21)
Many equity markets combine continuous trading and call auctions. Oftentimes designated market makers (DMMs) supply additional liquidity. Whereas prior research has focused on their role in continuous trading, we provide ...