TSP Share Price History: Where the Official Numbers Are, and What Each Fund Has Returned Through October 2, 2026

The Thrift Savings Plan posts a share price for each fund after every business day, and it publishes the whole history as one downloadable file going back to 2003. Those prices are settled facts. On October 2, 2026 the C Fund closed at $124.6182, the S Fund at $113.9078, the I Fund at $64.8627, the F Fund at $20.3176 and the G Fund at $20.2620. What is not settled is the thing people actually want from a price history: where the price goes next. No table can tell you that, and the returns below describe the past only.

Where the official history is

On tsp.gov, under fund performance, the share price history page shows a table and offers a download of the full history as a spreadsheet file. The file has one row per business day and one column per fund: the five core funds and each Lifecycle fund. Its first row is May 31, 2003, with every core fund at $10.00, which makes the long-run growth easy to read: a C Fund share that started at $10.00 was $124.6182 on October 2, 2026.

Prices now, and returns for 2026 so far

The G Fund has never had a down day in this file and was at its highest price ever on October 2. The C, S and I Funds set their all-time highs in August and September 2026: $125.6188 on August 13, $120.9799 on August 14 and $66.7486 on September 8. The F Fund is still below its high of $21.2672 from August 6, 2020.

Year by year since 2021

Read the 2022 row twice. In a single year the S Fund lost more than a quarter of its value and the C Fund lost 18.13%. Anyone who moved to the G Fund at the end of 2022 locked in that loss and then missed 26.25% in the C Fund the next year. The price history is the best argument there is against reacting to it.

Five and ten years

Five years runs from October 1, 2021 and ten years from September 30, 2016, the last prices on or before those anniversaries. In dollars: $10,000.00 in the C Fund ten years ago was $41,914.00 on October 2, 2026. The same amount in the G Fund was $13,408.00.

The Lifecycle funds

Each Lifecycle fund is a mix of the five core funds that grows more conservative as its year approaches, so its return sits between them. For 2026 through October 2: L Income 6.32%, L 2030 9.41%, L 2040 11.26%, L 2050 12.39%, and L 2055 through L 2075 about 14.8%. What each one holds is in our fund allocation guide.

What to do with a price history

• Use it to check, not to time. Confirm that your contributions bought shares at the price on the day they posted, and that a fund transfer went through. That is its job.
• Look at your contribution rate before your fund mix. Under the Blended Retirement System the government puts in up to 5% of basic pay: 1% automatically and up to 4% as a match. Missing the match costs more than any allocation choice. The TSP calculator shows what the match is worth at your grade.
• Pick an allocation you can hold through a year like 2022. If an 18% drop would make you sell, you hold too much in stock funds, and a Lifecycle fund makes that decision for you.
• Roth or traditional matters more than the fund in a low-tax year. See Roth versus traditional, especially for pay earned in a combat zone.

The bottom line

The official TSP share price history is on tsp.gov as a daily file back to May 31, 2003. On October 2, 2026 the C Fund was $124.6182, up 13.79% for the year; the S Fund $113.9078, up 13.45%; the I Fund $64.8627, up 16.89%; the F Fund $20.3176, down 2.70%; and the G Fund $20.2620, up 3.44%. Every figure here is computed from those official prices and describes the past only. Always verify your own account at tsp.gov, and consider a financial counselor before making investment decisions.