TSP Returns June 2026: Every Fund, Every Number
Last Updated: July 5, 2026
TSP June 2026 returns split the headlines: one outlet said the S Fund surged, another said TSP funds faltered, and both were right. June was a dispersed month, small-cap up big while large-cap slipped, and the only honest way to report it is the full table. Here is every fund, every number, from TSP.gov's monthly data.
The Core Funds
| Fund | June 2026 | YTD 2026 | Trailing 12-Mo |
|---|---|---|---|
| G Fund | +0.37% | +2.18% | +4.40% |
| F Fund | +0.25% | +0.74% | +3.83% |
| C Fund | -0.95% | +10.20% | +22.31% |
| S Fund | +4.34% | +18.41% | +29.16% |
| I Fund | -0.03% | +16.53% | +30.05% |
The Lifecycle (L) Funds
| Fund | June 2026 | YTD 2026 | Trailing 12-Mo |
|---|---|---|---|
| L Income | +0.30% | +5.24% | +10.08% |
| L 2030 | +0.21% | +8.33% | +16.42% |
| L 2035 | +0.18% | +9.55% | +18.36% |
| L 2040 | +0.16% | +10.21% | +19.64% |
| L 2045 | +0.14% | +10.77% | +20.74% |
| L 2050 | +0.12% | +11.34% | +21.85% |
| L 2055 | +0.06% | +13.41% | +25.79% |
| L 2060 | +0.06% | +13.40% | +25.79% |
| L 2065 | +0.06% | +13.40% | +25.78% |
| L 2070 | +0.06% | +13.40% | +25.78% |
| L 2075 | +0.06% | +13.40% | +25.78% |
Source: TSP.gov monthly returns, cross-checked against FedSmith and GovExec reporting.
Why the Headlines Disagreed
FedSmith led July 1 with the S Fund's 4.34% surge. GovExec led with "some TSP funds faltered." Neither outlet is wrong, and that's the point.
June wasn't an up month or a down month. It was a dispersed month: small-cap stocks ripped, large-cap and international treaded water, bonds inched forward, and every blended L fund landed slightly positive. Pick any single fund as your lens and you get a different story. The table is the story.
June's Milestones
- The C Fund now holds roughly $398.3 billion, about 34.5% of all TSP assets, the plan's largest fund by a wide margin.
- The C Fund's -0.95% ranks as the 13th-worst June in the fund's 39 years. Uncomfortable, historically mild.
- The S Fund's +4.34% ranks as the 5th-best June since its 2001 inception.
- Over 12 months, international is winning: I Fund +30.05% versus S +29.16% and C +22.31%. For the large share of participants holding C-heavy allocations, the diversification argument is currently making itself.
What a Down C Fund Month Should Change (Usually Nothing)
A -0.95% month following a +22.31% trailing year is well inside normal variation. The participants who felt June least were the ones in L funds, where the same dispersion netted out positive across every vintage.
If June's split has you rethinking your mix, model it properly instead of reacting to one row of the table. Our free TSP Calculator projects long-run growth under different allocations, the best TSP allocation guide walks the C/S/I tradeoffs, and the milestone benchmarks by age show whether your balance is on pace regardless of any single month.
Frequently Asked Questions
What were the June 2026 TSP returns?
S +4.34%, G +0.37%, F +0.25%, I -0.03%, C -0.95%, with all 11 L funds positive.
Which fund leads 2026 so far?
The S Fund at +18.41% YTD. The I Fund leads the trailing 12 months at +30.05%.
Was June good or bad for the TSP?
Dispersed. Small-cap surged, large-cap slipped slightly, blended funds finished positive, and every fund remains up for the year.
How big is the C Fund now?
About $398.3 billion, roughly 34.5% of all TSP holdings.
Should I rebalance after June?
Not because of June. One month is noise; allocation decisions belong to your time horizon, not the latest table.
Related Resources
- TSP Calculator: Project your balance under different allocations.
- Best TSP Allocation 2026: The C/S/I mix tradeoffs.
- TSP Milestone Benchmarks by Age: Is your balance on pace?
- The Average TSP Account as the Plan Hits $1.156T: Where you stand against the averages.
Sources: TSP.gov monthly returns, FedSmith June 2026 TSP performance, GovExec.