The following comes to us from Professor Mike Guttentag in response to my recent post on his excellent and thought-provoking new article, Avoiding Wasteful Competition: Why Trading on Inside Information Should be Illegal. This is a worhy discussion I look forward to continuing–and I hope others will engage in the comments below. Now, here is Professor Guttentag’s response:
As always, I am honored and impressed by the seriousness and respect with which Professor Anderson approaches my work. I would, however, take exception to the reasons he offers for rejecting my conclusions.
The debate about insider trading over the past five decades has suffered from limited evidence of either benefits or harms. Those who have objected to a strict insider trading prohibition have reasonably asked: what evidence is there that the harms of insider trading justify a broad prohibition?
In my article I believe I have answered that challenge. First, I explain why there is a significant mismatch between private gains and social gains when trading on inside information. This mismatch arises both because of how inside information is produced (largely as a byproduct of other activities) and how trading on this information generates profits (at the expense of others). I
