It was a choppy week for TSP investors. A sharp tech and chip-stock sell-off on Thursday — driven by disappointing earnings reactions from Tesla and Alphabet along with renewed worries over AI-related capital spending — pulled the stock funds lower for the week, even after a partial recovery on Friday as oil prices pulled back Friday on reports of a possible diplomatic opening, even as fighting continued in the Middle East. The Nasdaq finished the week down roughly 2%, while the S&P 500 and Dow were closer to flat.
Core TSP Funds
| Fund | Price (7/24) | Week (7/20–7/24) | YTD |
|---|---|---|---|
| G Fund | 20.0739 | +0.09% | +2.5% |
| F Fund | 20.7899 | -0.73% | -0.4% |
| C Fund | 119.3426 | -0.60% | +9.0% |
| S Fund | 113.9880 | -0.92% | +13.5% |
| I Fund | 62.9110 | -0.10% | +13.4% |
Lifecycle (L) Funds
| Fund | Price (7/24) | Week (7/20–7/24) | YTD |
|---|---|---|---|
| L Income | 30.6409 | -0.11% | +4.8% |
| L 2030 | 62.2717 | -0.26% | +7.2% |
| L 2035 | 19.1069 | -0.33% | +8.1% |
| L 2040 | 73.5874 | -0.36% | +8.6% |
| L 2045 | 20.4399 | -0.39% | +9.0% |
| L 2050 | 45.4611 | -0.42% | +9.4% |
| L 2055 | 23.8043 | -0.46% | +11.1% |
| L 2060 | 23.8012 | -0.46% | +11.1% |
| L 2065 | 23.7980 | -0.46% | +11.1% |
| L 2070 | 14.1044 | -0.47% | +11.1% |
| L 2075 | 12.3203 | -0.46% | +11.1% |
Source: Daily closing share prices published by the Thrift Savings Plan (tsp.gov).
What Moved the TSP Funds This Week
The S Fund led the week’s declines among the core funds, down 0.92%, as small and mid-cap growth names bore the brunt of Thursday’s tech-driven sell-off — the worst single-day drop for major indexes since late June.
The C Fund held up somewhat better at -0.60%, reflecting the relative resilience of large-cap stocks compared with the more growth-heavy Nasdaq. The I Fund was essentially flat for the week (-0.10%), with a strong Tuesday largely offsetting Thursday’s losses — a reminder that international markets don’t always move in lockstep with U.S. tech.
On the fixed-income side, the F Fund slipped 0.73% as Treasury yields drifted higher through most of the week before easing slightly on Friday. The G Fund, as always, posted a small, steady gain (+0.09%), underscoring its role as the TSP’s only fund with no downside volatility.
The Lifecycle Funds moved in line with their stock exposure: L Income, which holds the least in stocks, was down just 0.11% for the week, while the longer-dated funds — L 2055 through L 2075, which hold the most in the C, S, and I Funds — fell closer to 0.46–0.47%. That gradient is by design: the further out a fund’s target date, the more its short-term swings will resemble the stock funds, and the closer to retirement, the more it behaves like a blend of G and F.
