The short version

Wednesday was a down day for most of the Thrift Savings Plan. The two funds with the biggest drops were the S Fund at -1.57% and the I Fund at -1.39%. The C Fund slipped 0.22%, and the bond-style funds barely moved.

How the individual funds did

C Fund (-0.22%, $125.9078). It tracks the S&P 500, which also fell 0.22%. The match is exact, as it should be. Over five days the fund is up 1.99%, and it is up 14.73% for the year.

S Fund (-1.57%, $113.0266). This was the weakest fund of the day. It follows the Dow Jones U.S. Completion index, which covers companies outside the S&P 500. Those stocks fell much harder than the large-company index. The fund is still up 0.85% over five days and 11.17% year to date.

I Fund (-1.39%, $64.4752). It follows MSCI ACWI ex-US ex-China. The decline lines up with the international ETF in the IRA data below. Even so, the I Fund leads the year at 15.07%, just ahead of the C Fund.

F Fund (-0.01%, $20.3358). It tracks the Bloomberg U.S. Aggregate bond index, and the bond ETF BND was nearly flat too, at -0.03%. The F Fund is still down 2.51% for the year.

G Fund (+0.01%, $20.2771). It pays a Treasury-based rate and does not swing with markets. It is up 3.5% so far in 2026.

Two moves over 1%

Both the S Fund and the I Fund fell more than 1% in a single session. That is a notable move, but both remain well in the black for the year. The data here does not say what caused the drops, so I will not guess at a reason.

L Funds

The L Funds blend the five core funds, so their results sit between the C Fund and the G Fund. The more stock-heavy the fund, the bigger the dip.

  • L Income: -0.22%
  • L 2030: -0.42%
  • L 2035: -0.52%
  • L 2040: -0.57%
  • L 2045: -0.61%
  • L 2050: -0.65%
  • L 2055 through L 2075: -0.79% each

Year to date, L Income is up 6.26%, L 2030 is up 9.2%, and the 2055 to 2075 funds are up about 14.4%. All of them are positive over the past five days as well.

What moved IRA index funds and ETFs

The figures below are from the prior session close, but they show the same pattern.

  • S&P 500: 7801.77, -0.22%
  • Dow Jones Industrial Average: 51179.871, -0.66%
  • Nasdaq Composite: 27538.689, -0.22%
  • VTI (total U.S. stock market): $381.03, -0.40%
  • VXUS (total international stock): $84.79, -1.18%
  • BND (total U.S. bond market): $70.00, -0.03%
  • 10-year Treasury yield: 5.277, up 0.15%

U.S. large-company indexes had mild losses. VTI fell a bit more than the S&P 500 because it holds smaller companies as well, which matches the weakness in the S Fund. VXUS dropped 1.18%, in line with the I Fund. BND was nearly unchanged, and the 10-year yield edged up slightly from an already high level of 5.277.

What it means for your plan

One day like this rarely changes a long-term plan. A 1% or 2% drop in part of your portfolio is a small number against years of contributions and growth. The C and I Funds are both up more than 14% this year, and even the weakest equity fund shown here, the S Fund, is up more than 11%.

If you are far from retirement, daily swings are mostly noise. If you are close to retirement, a mix with more G Fund and bond exposure, like L Income, moved the least today. That is a trade-off to weigh against your own goals and timeline, not a signal to act on. This recap is general information, not personal advice.