The broken bond between the two men shows how the government's insider-trading investigation is attempting to splinter the tight-knit circles of traders that share illegal investment data, prosecutors allege, in an environment where friendship is key.

WSJ: They Were Best of Friends, Until the Feds Showed Up

Chart Analysis: The weekly chart of the T-Bond futures shows that the uptrend from the 2011 lows, line a, has been broken over the past three weeks.

FORBES: Should Bond Holders Be Worried?