Yesterday's bond market rally came out of left field, not just for market watchers, but for market participants as well.  In fact, one of the driving forces behind the rally was the fact that bets were so universally placed on rates moving higher.  When too many traders are betting on the same outcome, markets have a tendency to punish the majority.  Depending whom you ask, this is a "pain trade." 

Yesterday's pain trade was painful for those holding short positions (bets on rates moving higher), and also short-lived.  The steep decline in Treasury yields (or spike in MBS Prices) from 10am to 2pm was the extent of the drama and we're now approaching Wednesday with a more neutral stance--a little older and a little wiser for the experience.

Corporate bond deals continue to throw wrenches into the works here and there.  As a reminder, corporate issuance puts pressure on rates by adding supply to the broader bond market.  Treasuries are also used in the process of hedging corporate bonds (depending on the issuer's strategy), and this can have a more pronounced effect when bigger deals are being priced (a corporate bond's "pricing" is akin to a Treasury auction).  With the biggest corporate bond in history set to price today, we shouldn't be surprised to see a relatively big disruption seemingly coming out of nowhere.