The international stock I fund posted the strongest gain among TSP funds in March, up 2.85 percent, compared with a gain of just 0.12 percent in the C fund of large U.S. companies and a loss of 0.08 percent in the small company S fund. The bond F fund also suffered a small loss, down 0.01 percent, while the government securities G fund rose 0.2 percent. The March returns, all gains, for the lifecycle L funds were: Income, 0.33; 2020, 0.48; 3030, 0.64; 2040, 0.71; 2050, 0.78.