Instead of talking about those dirty illegal insider trading, it is a long term study (from 70's to 90's) of legal, SEC filed stock transactions by company executives, accountants (insiders) to answer, from pg 317, "Can a potential stock market investor mimic insiders and make profits? If so, what is the magnitude of the profits? What kinds of risks does a mimicking strategy impose on outside investors? Given the risks, is it still worth it?"
By and large, the author did provide answers to the above. Profit for the mimicking is still available, after report delays, transaction costs and the need to mimic over 50 multiple transaction to lower risk. For a 12 mth holding period, the strategy outperforms the market by 2% for buying but underperforms by 3.3% for selling.
You can tell the conclusion is simple, but the author did use a lot of set up, with lengthly coverage of legal issues, before summing it up in the very last 14th chapter of this 341 content page book. As per title of this review, it is well researched, informative but too academic and long.
p.s. One minor complaint: The author should give more details on parameter setting and provide an optimal (profit maximization) strategy on the mimicking. Perhaps he did, but he didnt show it in the book.