This version corrected the name of Colts tight end Dwayne Allen.
An earlier version misidentified the person who is joining eBay's board via the agreement with Carl Icahn.
This story corrected David Abney's title.
An earlier version of this story incorrectly stated the net return on a hypothetical investment under the proposed new capital gains tax.
An earlier version of this story misstated Sheryl Sandberg's title.
The Twitter account for U.S. Central Command was hacked Mon., Jan. 12. The date was misstated in an earlier version of this article.
This version corrected that Virgin Group made the investment with Qualcomm.
This version corrected the spelling of Trainor.
This version corrected the day Gabelli spoke.
This article has been corrected to reflect that U.S. Attorney General Eric Holder attended a meeting with world leaders on Sunday in Paris, France.