...and a quick reply from Tom:
Thanks...learn something new everyday.The AGG isn't exactly the F-fund. The TSP sets the fund prices and it may be different for a number of reasons. The AGG is a bond fund ETF that we use to try to gauge the daily F-fund price, but it is not always the same as our F-fund. Just like the EFA is often different than our I-fund but they supposedly track the same EAFE Index.
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