Estimated · Delayed Market context Updated Sep 16, 2026 3:50 PM CDT

F (AGG) +0.01% C (SPY) -0.55% S (VXF) -0.24% I (EFA) -0.50%

Mode: Estimated (delayed ETF proxies). Trading day and shareprices are not yet updated to today (Sep 16, 2026). Latest official TSP price date: Sep 15, 2026. Showing delayed ETF proxies as an estimate until official closes post (~8:00 PM CDT). G Fund is omitted (no market ETF approximation). Order shown: F · C · S · I.

Fund	Tracks / index	Proxy ETF	Proxy last	Day change
F · F Fund Fixed Income Index Investment Fund	Bloomberg U.S. Aggregate Bond Index	AGG iShares Core U.S. Aggregate Bond ETF Source: yfinance	95.81	+0.01%
C · C Fund Common Stock Index Investment Fund	S&P 500 Index	SPY SPDR S&P 500 ETF Trust Source: yfinance	754.05	-0.55%
S · S Fund Small Cap Stock Index Investment Fund	Dow Jones U.S. Completion Total Stock Market Index	VXF Vanguard Extended Market ETF Source: yfinance	234.39	-0.24%
I · I Fund International Stock Index Investment Fund	International equities (historically MSCI EAFE; broader ex-U.S. indexes may apply)	EFA iShares MSCI EAFE ETF Source: yfinance	105.02	-0.50%

Disclaimer: Delayed market ETF day-change figures for educational context only. These are not TSP Fund share prices, not official TSP performance, and not identical to TSP benchmarks (especially S and I Fund indexes). Figures may differ materially from tsp.gov valuations and daily pricing. When official TSP closes for the current trading day are available in our database, this strip switches to Actual mode and shows TSP fund day changes instead.

Current allocations

Monthly allocation

Interest Rates Continue to Drive I Fund Investment

September 30, 2025 · Monthly Allocation

This allocation detail is for subscribers

Subscribe to see fund weights and commentary for the last twelve months—the same process used in the public track record.

Subscribe from $7/mo Member login

Already a member? Log in to unlock this post.

Allocation history

Browse monthly posts by year, or return to current allocations.

Choose a plan under PayPal or under Card (Square). Both options stay visible.

Pay with PayPal

$7/mo

Monthly

Flexible month-to-month

Best value · save ~29%

$60/yr

Yearly

One payment per year

Pay with card (Square)

Best value · save ~29%

First name

Last name

Email address

Card details

Secure payment by PayPal or Square.
After payment, you will be redirected to create your login.

Year¹	TSP Coach
2005	2.66%
2006	2.46%
2007	2.82%
2008	4.10%
2009	1.85%
2010	6.00%
2011	5.89%
2012	1.89%
2013	2.71%
2014	2.50%
2015	3.69%
2016	2.91%
2017	0.90%
2018	4.38%
2019	3.76%
2020	8.01%
2021	3.02%
2022	6.07%
2023	4.62%
2024	2.84%
2025	2.98%
2026	4.77%
As of:	09/15/2026

L Income	L 2030	L 2035	L 2040	L 2045	L 2050	L 2055	L 2060	L 2065	L 2070	L 2075	G Fund	F Fund	C Fund	S Fund	I Fund
											0.04%	0.84%	2.16%	3.32%	2.77%
0.37%	1.48%		1.70%								0.04%	0.73%	1.56%	3.06%	2.60%
0.49%	1.90%		2.16%								0.05%	0.73%	2.68%	3.00%	2.77%
1.29%	4.72%		5.40%								0.05%	1.69%	5.82%	7.61%	7.47%
1.36%	4.78%		5.45%								0.03%	0.92%	6.16%	7.12%	7.65%
1.07%	3.91%		4.49%								0.04%	0.80%	5.32%	6.07%	6.56%
0.95%	3.38%		3.89%								0.04%	0.64%	4.41%	6.00%	5.43%
0.65%	2.30%		2.64%								0.01%	0.56%	2.91%	3.44%	4.59%
0.51%	1.68%		1.94%								0.03%	0.88%	2.35%	2.89%	3.29%
0.49%	1.61%		1.87%								0.01%	0.63%	2.28%	3.48%	2.71%
0.71%	2.36%		2.72%								0.02%	0.82%	3.78%	3.58%	4.11%
0.59%	1.96%		2.29%								0.02%	1.03%	2.84%	4.47%	3.47%
0.16%	0.50%		0.59%								0.01%	0.43%	1.09%	1.42%	1.17%
0.77%	2.34%		2.79%								0.02%	0.86%	4.24%	4.92%	3.45%
0.69%	2.06%		2.47%								0.03%	0.95%	3.56%	4.68%	3.16%
1.63%	4.54%		5.43%								0.03%	0.95%	7.18%	10.19%	7.30%
0.62%	1.61%	1.76%	1.91%	2.05%	2.18%	2.63%	2.63%	2.63%			0.02%	0.79%	3.05%	3.29%	2.76%
1.59%	3.79%	4.16%	4.52%	4.83%	5.13%	6.05%	6.05%	6.06%			0.07%	2.34%	6.21%	6.87%	6.42%
1.21%	2.76%	3.04%	3.31%	3.54%	3.76%	4.39%	4.39%	4.39%			0.04%	2.35%	4.07%	6.44%	4.60%
0.83%	1.82%	2.00%	2.17%	2.32%	2.46%	2.89%	2.89%	2.89%	2.88%		0.02%	1.64%	2.95%	5.13%	2.98%
0.67%	1.52%	1.67%	1.82%	1.95%	2.08%	2.52%	2.52%	2.52%	2.52%	1.10%	0.01%	0.79%	3.04%	4.29%	1.91%
1.24%	2.46%	2.90%	3.15%	3.37%	3.59%	4.30%	4.30%	4.31%	4.31%	4.31%	0.06%	1.01%	4.21%	4.42%	5.28%
¹Life starting dates for TSP funds are August 31, 2004. TSP Coach strategy has been in use since August 2004.

This table shows the risk based on monthly returns for each of the TSP Funds, Lifecycle Funds and TSP Coach. My TSP Fund allocations have reduced my risk, but does not lower it to levels that inhibit my returns. While I utilize the Sharpe Ratio in my calculations, and risk is an important part of this equation, I also perform proprietary calculations to ensure that the often times conservative nature of the Sharpe Ratio does not limit the performance of my Thrift Savings Plan investments.

Year	TSP Coach
2005	10.98%
2006	23.57%
2007	10.68%
2008	-8.50%
2009	16.83%
2010	25.23%
2011	-1.61%
2012	27.39%
2013	34.94%
2014	12.67%
2015	1.56%
2016	5.37%
2017	17.89%
2018	6.56%
2019	29.24%
2020	37.47%
2021	17.60%
2022	-15.35%
2023	22.25%
2024	13.28%
CAGR	13.57%
CAGR L10Y	12.48%
CAGR L5Y	6.63%
CAGR L3Y	11.46%
As of: 01/01/2025

TSP X1^	TSP X2^	TSP Z*	TSP V*	TSP U*	TSP T*	TSP R*^	TSP Q	TSP P*
6.10%	12.90%	21.79%				19.24%	5.63%	8.54%
10.70%	22.10%	15.25%		10.88%	27.96%	21.47%	15.22%	16.11%
4.20%	2.10%	9.32%		5.33%	21.32%	16.27%	7.60%	5.82%
-6.10%	-15.40%	-7.56%	-5.53%	-10.21%	-6.14%	10.59%	2.64%	-1.87%
8.60%	19.60%	23.30%	20.94%	4.98%	6.62%	36.87%	10.74%	24.61%
7.50%	20.40%	14.54%	29.18%	4.15%	35.16%	15.63%	11.25%	22.86%
4.30%	-0.70%	5.07%	8.44%	4.66%	-10.27%	5.54%	2.63%	15.01%
7.40%	12.00%	-4.60%	13.13%	10.88%	20.62%	-2.15%	6.49%	16.41%
10.30%	17.80%	12.54%	15.39%	18.32%	28.56%	15.42%	15.50%	20.72%
3.80%	5.00%	22.73%	12.91%	10.01%	11.98%	14.69%	8.75%	2.59%
1.20%	40.00%	13.07%	11.82%	2.55%	7.84%	10.39%	-6.93%	0.71%
3.60%	6.10%	4.71%	1.66%	7.79%	5.77%	4.73%	5.75%	10.75%
8.50%	15.00%	16.51%	16.51%	11.79%	8.19%	16.84%	12.46%	14.79%
-2.30%	-6.20%	-0.17%	-2.50%	-3.59%	4.36%	2.26%	-0.26%	-7.61%
11.50%	21.90%	21.42%	0.80%	13.37%	15.48%	20.51%	4.41%	28.31%
7.44%	8.36%		8.20%	23.48%	-1.87%	17.18%	10.16%
8.24%	15.12%		17.51%	17.46%	12.06%	11.38%	5.09%
-4.78%	-10.86%		-30.80%	38.00%	1.03%	-9.66%	-5.45%
11.70%	16.77%		10.01%	12.28%	29.00%	10.12%	10.03%
11.88%	16.83%		14.31%	13.97%	23.72%	25.49%	10.10%
5.56%	10.21%	7.97%	7.03%	9.36%	11.38%	12.70%	6.43%	8.43%
5.42%	7.79%	3.99%	2.56%	12.93%	9.35%	9.41%	5.09%	4.19%
5.19%	6.96%		0.45%	15.71%	12.56%	6.82%	3.78%
7.71%	10.91%		7.94%	8.57%	16.86%	11.38%	6.60%

No TSP Allocation plan beats TSP Coach! Some plans have even stopped entirely.

Year	TSP Coach
Initial	$10,000
2005	$11,038
2006	$13,580
2007	$14,970
2008	$13,638
2009	$15,873
2010	$19,817
2011	$19,438
2012	$24,703
2013	$33,274
2014	$37,429
2015	$37,953
2016	$39,931
2017	$47,015
2018	$50,039
2019	$64,611
2020	$88,760
2021	$104,322
2022	$88,249
2023	$107,824
2024	$122,083
CAGR	13.33%
CAGR L10Y	12.39%
CAGR L5Y	6.58%
CAGR L3Y	11.42%
As of: 01/01/2025

TSP X1^	TSP X2^	TSP Z*	TSP V*	TSP U*	TSP T*	TSP R*^	TSP Q	TSP P*
$10,000	$10,000	$10,000				$10,000	$10,000	$10,000
$10,460	$11,140	$11,920		$11,038	$11,038	$11,665	$10,414	$10,755
$11,429	$13,452	$13,478		$12,040	$13,945	$13,909	$11,850	$12,389
$11,759	$13,585	$14,474	$14,970	$12,483	$16,739	$15,913	$12,602	$13,011
$10,892	$11,343	$13,121	$13,942	$11,009	$15,533	$17,339	$12,785	$12,668
$11,679	$13,416	$15,918	$16,662	$11,358	$16,382	$23,472	$14,009	$15,687
$12,405	$16,003	$17,973	$21,324	$11,631	$21,963	$26,881	$15,437	$19,174
$12,788	$15,741	$18,625	$22,923	$11,974	$19,528	$28,111	$15,694	$21,953
$13,585	$17,480	$17,509	$25,733	$13,078	$23,376	$27,247	$16,563	$25,457
$14,834	$20,441	$19,445	$29,493	$15,274	$29,873	$31,189	$18,981	$30,632
$15,248	$21,313	$23,605	$33,101	$16,604	$33,273	$35,511	$20,493	$31,327
$15,281	$29,689	$26,431	$36,813	$16,829	$35,702	$38,941	$18,924	$31,450
$15,681	$31,350	$27,416	$37,225	$17,941	$37,583	$40,523	$19,863	$34,732
$16,864	$35,902	$31,683	$43,170	$19,857	$40,482	$47,088	$22,189	$39,770
$16,326	$33,526	$31,370	$41,891	$18,945	$42,068	$47,893	$21,982	$36,644
$18,054	$40,719	$37,830	$42,026	$21,279	$48,402	$57,456	$22,803
$19,246	$43,971		$45,272	$26,076	$47,317	$67,068	$24,971
$20,682	$50,471		$52,999	$30,430	$52,845	$74,440	$26,093
$19,543	$44,839		$36,476	$41,795	$53,210	$66,990	$24,521
$21,681	$52,207		$39,927	$46,728	$68,462	$73,510	$26,832
$24,106	$60,845		$45,440	$53,057	$84,522	$91,988	$29,393
4.50%	9.45%		6.36%	8.17%	10.71%	11.73%	5.54%
4.66%	7.44%		2.13%	12.17%	9.00%	8.98%	4.50%
4.61%	6.71%		0.07%	15.27%	12.30%	6.52%	3.31%
7.24%	10.71%		7.60%	8.28%	16.68%	11.15%	6.23%

* > 2 trades/mo
^ > 2 trades/mo before 2007
~ Numbers on website have changed from 2015
I started with an initial value of $10,000 on January 1, 2005 and then compared my returns to other fee based TSP newsletters based on the information available on their websites. In cases where their programs started after 2005, I started them at the TSP Coach end of year fund value in order to provide an easy comparison. Additional comments are noted in the table.

Menu

Interest Rates Continue to Drive I Fund Investment

Allocation history