Here's a chart from Yahoo Finance showing just how quickly rates have risen since May 1 on the 10 and 30-year Treasuries. http://finance.yahoo.com/echarts?s=%5ETYX#chart3:symbol=^tyx;range=1m;compare=^tnx;indicator=volume;charttype=line;crosshair=on;ohlcvalues=0;logscale=off
I don't know how TIAA times its moves, but interest rates have certainly moved up very rapidly and TIAA has ample cash to take advantage of such moves. Bob U.