The Thrift Savings Plan’s core funds turned in a positive week from August 31 through September 4, 2026, with international stocks leading the way and bonds the lone decliner. The week’s trading unfolded against a backdrop of Federal Reserve rate speculation ahead of the September 15-16 Federal Open Market Committee (FOMC) meeting, with Friday’s non-farm payrolls report from the Bureau of Labor Statistics serving as the week’s key economic data point.
Core Funds
| Fund | Weekly Return |
|---|---|
| G Fund | +0.09% |
| F Fund | -0.18% |
| C Fund | +0.13% |
| S Fund | +0.19% |
| I Fund | +0.71% |
Lifecycle Funds
| Fund | Weekly Return |
|---|---|
| L Income | +0.15% |
| L 2030 | +0.21% |
| L 2035 | +0.24% |
| L 2040 | +0.25% |
| L 2045 | +0.26% |
| L 2050 | +0.28% |
| L 2055 | +0.33% |
| L 2060 | +0.33% |
| L 2065 | +0.33% |
| L 2070 | +0.33% |
| L 2075 | +0.33% |
What Moved the Market
The I Fund was the standout performer, adding 0.71% as international markets outpaced their U.S. counterparts for the week. The C and S Funds also finished higher, up 0.13% and 0.19% respectively, as large- and small-cap U.S. stocks eked out modest gains heading into Friday’s jobs data.
The F Fund was the week’s only decliner, slipping 0.18% as bond yields drifted higher on growing uncertainty over the Thrift Savings Plan (TSP) policy backdrop tied to the Federal Reserve’s upcoming rate decision. With the FOMC meeting less than two weeks away, investors spent the week parsing labor-market data for clues about whether the central bank will hold rates steady or move to cut. The G Fund continued its steady, low-volatility climb, adding 0.09% as it does most weeks regardless of stock and bond market swings.
The Lifecycle Funds all finished the week in positive territory, with returns generally increasing for funds further from their target retirement date. Longer-dated L Funds carry larger allocations to the I, C, and S Funds, which is why L 2055 through L 2075 outpaced the more conservative L Income Fund this week.
Fund performance is based on TSP daily share prices. This is not financial advice.