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Insider Trading Enforcement And The Private Information Environment: Evidence From The Newman Ruling, Andrew T. Pierce
Insider Trading Enforcement And The Private Information Environment: Evidence From The Newman Ruling, Andrew T. Pierce
Graduate Theses and Dissertations
I exploit a shock to U.S. insider trading law to investigate whether a reduction in the enforceability of tipper-tippee insider trading restrictions leads to changes in information parity among investors and the efficiency of price discovery. The December 2014 Federal Second Circuit Court of Appeals ruling in US v. Newman constrained enforcement by restricting the types of exchanges between managers and investors that trigger tipper-tippee insider trading liability. Following Newman, I find that Second Circuit hedge funds experienced a significant increase in their stock picking ability of Second Circuit stocks in terms of preempting future earnings announcement returns and future …
Consequences Of Disclosing Clinical Trial Results: Evidence From The Food And Drug Administration Amendments Act, Thomas Borveau, Vedran Capkun, Yin Wang
Consequences Of Disclosing Clinical Trial Results: Evidence From The Food And Drug Administration Amendments Act, Thomas Borveau, Vedran Capkun, Yin Wang
Research Collection School Of Accountancy
We examine how the U.S. Food and Drug Administration Amendments Act (FDAAA) of 2007, which requires additional disclosures regarding clinical trial results, impacts information asymmetry between the disclosing pharmaceutical firm and capital market participants, the general public, academics, and practitioners. We document a reduction in information asymmetry in capital markets. We also document an increase in adverse event and product problem complaint reports filed against the pharmaceutical firms to the FDA and a higher number of drug and medical device recalls for affected firms after the FDAAA enactment. Finally, cross-sectional analyses suggest that the increase in FDA complaint reports and …
(When) Does Transparency Hurt Liquidity?, Karthik Balakrishnan, Aytekin Ertan, Yun Je Lee
(When) Does Transparency Hurt Liquidity?, Karthik Balakrishnan, Aytekin Ertan, Yun Je Lee
Research Collection School Of Accountancy
Conventional wisdom suggests that increases in public information improve market liquidity. However, if greater public information incentivizes only sophisticated investors to produce private information, it could exacerbate information asymmetry among investors and thus reduce liquidity. We explore this argument on a sample of mortgage-backed securities (MBSs) by using a recent European regulation that mandates complex disclosures about the individual loans underlying MBSs. We find that the liquidity of the debt tranches of disclosed MBSs declines by 23% post-regulation. Our inferences are stronger when the securities are harder to value and when the disparity in investor sophistication is higher. In contrast …