Through November 11, the FRB NY has just surpassed the $1T level with net purchases of Agency MBS. Over $200B of these purchase transactions have yet to settle so the amount recorded in the H.4.1 Report is only at $775B as a factor affecting bank reserves.
The weekly rate at which the NY Fed is purchasing these securities has slowed over the weeks since the Fed announced that this program would be extended into 1st quarter 2010, from $25B per week to lately around $16B per week. The graph below is as of this week.
This is probably the first time that such a focused Fed program has surpassed the $1T level.