If you look at AGNC dividend table on their website, we should expect the ex-div date to be March 6th. That means they will announce the first quarter div this coming week. Expect it to maintain $1.25
If that were true, then a serious amount of March options are completely mis-priced.
The only reason Mar 2012 had an early EX was bad earnings and a resultant lower dividend for the first time in 10 quarters. Don't expect it again this March. The EX will most likely follow previous precedent and fall after Mar OPEX(15th).
Historically, there has been substantial variance in the actual March date; 3/5/12, 3/21/11, 3/29/10 and 3/31/11.