"MarketWatch found that insider trading may be one of the most common crimes on Wall Street and one of the least prosecuted. And that was only the beginning. MarketWatch discovered that the problem for retail investors goes far beyond a failure of regulators to identify insider-trading violations.
The financial criminals we spoke with said that not only do many investors routinely skirt insider-trading laws, but the explosion of computerized high-speed trading in recent years has made the situation even more unfair for the retail investor.
Those retail investors should be careful when relying on audited financial statements because accounting fraud continues unabated, according to one interview. Accounting-fraud cases are complex, and regulators don’t have the resources to enforce the law effectively, according to one felon."