Secondary market platform Tradeweb on Thursday released numbers showing to-be-announced mortgage-backed securities trading reached a record high of $24 trillion in 2012.

Tradeweb also released numbers showing the range of price fluctuation during the year. It found prices for Fannie 3s fell as low as 98 10/32 at one point (March 19) and climbed above 106 at another (Sept. 26).

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