The U.S. Securities and Exchange Commission is investigating misleading marketing by Wall Street banks of so-called “principal protection” notes, according to a recent Bloomberg article by Zeke Faux and Joshua Gallu. The investigation focuses on notes issued by now-bankrupt Lehman Brothers that prominently featured the words “principal protection” or “principal protected” in brochures provided to investors and that were sold as safe investments. Safety-minded investors were shocked when Lehman Brothers went bankrupt and the value of the notes collapsed. Investors had never been told that the notes were really options combined with an unsecured obligation of Lehman Brothers.