I know no one is really complaining hard about gaining .05 vs. losing .18 in the I fund, but a good short term investor

is really getting taken to the cleaners when the funds adjust themselves seemingly randomly like this. Yesterday is a prime example:
Bonds (F fund) tracked on this board closed at 103.00, down .01 (-0.01%). With the F fund valued at 10.66, it's a no-brainer that there should be no change. However, it goes down .01. Costly at that level, but we can say, 'Maybe the F fund was actually at 10.655 and the .01% dropped it just far enough to make it drop a penny.'
Since we all know what the I fund did (+.05 when it should have -.18), today, with Japan up 1+% and the European markets looking fairly strong, should be a strong gain for the I fund...but will the TSP funds reflect this? Does an investor have to figure in whether or not the TSP funds will reflect their respective market activities? :%
Should they have to? No.
The point is, based on the market activity, switching from the F fund to the I fund in this instance, should be a good move. But based on TSP, it very well may not be. It seems like what we need is a TSP sentiment indicator :end:instead of the EAFE, S&P 500, Bonds and Wilshire 4500 market trackers.