Since Leno's mid-September debut, his audience has continually slid, with his smallest 10 p.m. viewership to date (about 5 million) tuning in Thursday night.

FORBES: Media

"I bought 1, 000 shares at 12:50 p.m. on that date well after it was widely reported in the media that morning, " Mr. Brubaker says.

WSJ: Congressional Staffers Gain From Trading in Stocks