Acropolis Investment Management, LLC

Quarterly 13F snapshot: US-listed longs only, no performance figures — 13F data cannot support them.

Portfolio value: $2.49B
Positions: 379
Quarter ended: September 30, 2026
Filed: October 08, 2026

Reported portfolio value by quarter (54 quarters reported)

$2.54B $462M

Q2 13 Q1 16 Q4 18 Q3 21 Q2 24 Q3 26

$462M in Q2 2013 → $2.49B now. Hover for any quarter.

Holdings

As reported for the quarter ended September 30, 2026. Activity is the change in share count since the prior quarter's filing.

Holding	% of portfolio	Activity	Shares	Value
VI Vanguard Index Fds	15.9%	Trimmed 0.7%	564,743	$396M
DE Dimensional ETF Trust	7.0%	Added 6.3%	4,323,310	$173M
VT Vanguard Tax-managed Fds	6.3%	Trimmed 20%	2,212,542	$156M
VS Vanguard Scottsdale Fds	6.0%	Trimmed 3.7%	2,653,970	$150M
IT Ishares Tr	5.3%	Trimmed 1.6%	968,870	$132M
IT Ishares Tr	5.0%	Trimmed 0.7%	1,715,181	$123M
IT Ishares Tr	4.4%	Trimmed 2.8%	2,184,246	$110M
JP J P Morgan Exchange Traded F	4.3%	Added 6.6%	2,219,217	$107M
IT Ishares Tr	3.3%	Trimmed 0.2%	980,722	$81.9M
VI Vanguard Index Fds	2.3%	Trimmed 2.6%	160,893	$56.6M
VI Vanguard Intl Equity Index F	1.8%	Trimmed 26%	752,964	$44.7M
IT Ishares Tr	1.8%	Added 1.1%	139,272	$44.2M
IT Ishares Tr	1.7%	Added 4409%	459,425	$41.1M
IT Ishares Tr	1.6%	Trimmed 2.7%	417,454	$40.4M
VB Vanguard Bd Index Fds	1.5%	Trimmed 17%	527,846	$37M
DE Dimensional ETF Trust	1.5%	Trimmed 0.1%	916,824	$36.8M
IT Ishares Tr	1.4%	Added 0.8%	645,542	$34M
Apple Inc	1.2%	Added 5.6%	91,423	$30.4M
DE Dimensional ETF Trust	1.1%	Trimmed 0.1%	509,494	$28.5M
I Ishares Inc	1.1%	Added 124%	347,556	$28.2M
IT Ishares Tr	1.1%	Added 0.3%	359,850	$28M
IT Ishares Tr	0.9%	Added 377%	208,079	$23.6M
VM Vanguard Malvern Fds	0.9%	Added 1.0%	301,122	$22.2M
AC American Centy ETF Tr	0.9%	Added 0.2%	168,218	$21.5M
IT Ishares Tr	0.8%	Trimmed 0.3%	148,458	$21.1M
IT Ishares Tr	0.8%	Trimmed 0.8%	26,598	$20.4M
Microsoft Corp	0.8%	Trimmed 0.5%	37,814	$19.4M
VI Vanguard Index Fds	0.7%	Trimmed 0.5%	64,670	$18.4M
VS Vanguard Scottsdale Fds	0.7%	Trimmed 11%	386,372	$17.2M
IT Ishares Tr	0.6%	Trimmed 2.3%	350,768	$14.6M
VI Vanguard Index Fds	0.6%	Added 0.7%	183,490	$14.4M
VS Vanguard Scottsdale Fds	0.6%	Trimmed 33%	248,575	$14.3M
IT Ishares Tr	0.5%	Trimmed 0.8%	51,739	$11.8M
Nvidia Corporation	0.5%	Added 2.9%	50,537	$11.5M
Alphabet Inc	0.4%	Trimmed 0.3%	31,912	$11M
VS Vanguard Scottsdale Fds	0.4%	Added 77%	139,395	$10.9M
Walmart Inc	0.4%	Trimmed 1.8%	99,274	$10.3M
VI Vanguard Index Fds	0.4%	Trimmed 8.9%	111,886	$10.1M
Procter & Gamble Co	0.4%	Trimmed 0.8%	65,437	$9.51M
Amazon Com Inc	0.3%	Added 1.0%	30,773	$7.67M
SS State Str SPDR S&P 500 ETF T	0.3%	Added 0.0%	8,943	$6.82M
Jpmorgan Chase & Co	0.3%	Trimmed 1.5%	19,959	$6.6M
SS Schwab Strategic Tr	0.3%	Trimmed 0.3%	229,367	$6.3M
BH Berkshire Hathaway Inc Del	0.3%	Trimmed 9.3%	12,547	$6.25M
VI Vanguard Index Fds	0.3%	Added 3.4%	28,811	$6.23M
IT Ishares Tr	0.2%	Trimmed 2.1%	67,080	$5.99M
IT Ishares Tr	0.2%	Trimmed 0.6%	52,476	$5.6M
Johnson & Johnson	0.2%	Trimmed 1.5%	19,823	$5.25M
Sensient Technologies Corp	0.2%	Unchanged	39,741	$5.19M
SS Select Sector SPDR Tr	0.2%	Trimmed 0.2%	26,306	$5.15M
IT Ishares Tr	0.2%	Trimmed 1.8%	17,631	$4.9M
Visa Inc	0.2%	Trimmed 1.4%	13,564	$4.87M
IT Ishares Tr	0.2%	Trimmed 5.0%	18,344	$4.86M
VI Vanguard Index Fds	0.2%	Added 0.8%	12,627	$4.73M
Micron Technology Inc	0.2%	Added 12%	4,387	$4.67M
IT Ishares Tr	0.2%	Unchanged	18,811	$4.66M
VI Vanguard Index Fds	0.2%	Added 5.2%	13,495	$4.56M
Exxonmobil Holdings Corp	0.2%	New	26,895	$4.38M
IT Ishares Tr	0.2%	Trimmed 45%	40,586	$4.1M
IT Ishares Tr	0.2%	Trimmed 0.8%	38,006	$3.95M

Showing top 60 of 379 positions.

Timeline of changes

What changed each quarter, from the filings' own share counts. Largest moves first; most recent 8 quarters.

Q3 2026

quarter ended September 30, 2026 · filed October 08, 2026

Company	Action	Shares changed	Value of change	% of portfolio
IT Ishares Tr	Added	+449,237	+$40.2M	1.7%
VT Vanguard Tax-managed Fds	Trimmed	−561,481	−$39.6M	6.3%
IT Ishares Tr	Added	+164,482	+$18.7M	0.9%
I Ishares Inc	Added	+192,574	+$15.6M	1.1%
VI Vanguard Intl Equity Index F	Trimmed	−262,790	−$15.6M	1.8%
DE Dimensional ETF Trust	Added	+257,626	+$10.3M	7.0%
VB Vanguard Bd Index Fds	Trimmed	−108,244	−$7.59M	1.5%
VS Vanguard Scottsdale Fds	Trimmed	−124,690	−$7.18M	0.6%
JP J P Morgan Exchange Traded F	Added	+137,780	+$6.66M	4.3%
VS Vanguard Scottsdale Fds	Trimmed	−102,579	−$5.81M	6.0%

Showing the 10 largest of 319 changes.

Q2 2026

quarter ended June 30, 2026 · filed July 16, 2026

Company	Action	Shares changed	Value of change	% of portfolio
VS Vanguard Scottsdale Fds	Added	+594,722	+$35.1M	6.4%
DE Dimensional ETF Trust	Added	+593,938	+$25.1M	6.8%
JP J P Morgan Exchange Traded F	Added	+355,786	+$18M	4.2%
VS Vanguard Scottsdale Fds	Trimmed	−199,641	−$11.6M	0.9%
VB Vanguard Bd Index Fds	Trimmed	−154,020	−$11.3M	1.8%
VI Vanguard Index Fds	Added	+136,183	+$11M	0.6%
VI Vanguard Index Fds	Added	+102,323	+$8.81M	0.4%
IT Ishares Tr	Added	+149,158	+$7.93M	4.7%
VS Vanguard Scottsdale Fds	Trimmed	−104,107	−$4.87M	0.8%
IT Ishares Tr	Trimmed	−15,125	−$2.24M	5.8%

Showing the 10 largest of 290 changes.

Q1 2026

quarter ended March 31, 2026 · filed April 09, 2026

Company	Action	Shares changed	Value of change	% of portfolio
VS Vanguard Scottsdale Fds	Added	+654,222	+$39M	5.7%
DE Dimensional ETF Trust	Added	+588,512	+$24.8M	6.5%
JP J P Morgan Exchange Traded F	Added	+360,957	+$18.4M	3.9%
VB Vanguard Bd Index Fds	Trimmed	−249,778	−$18.4M	2.6%
VS Vanguard Scottsdale Fds	Trimmed	−298,032	−$17.4M	1.5%
VS Vanguard Scottsdale Fds	Trimmed	−200,600	−$9.42M	1.1%
VM Vanguard Malvern Fds	Added	+67,699	+$5.24M	1.0%
IT Ishares Tr	Added	+45,193	+$2.98M	1.0%
IT Ishares Tr	Added	+39,416	+$2.1M	4.9%
VT Vanguard Tax-managed Fds	Trimmed	−28,799	−$1.85M	7.9%

Showing the 10 largest of 329 changes.

Q4 2025

quarter ended December 31, 2025 · filed January 14, 2026

Company	Action	Shares changed	Value of change	% of portfolio
DE Dimensional ETF Trust	Added	+2,683,370	+$114M	5.5%
VB Vanguard Bd Index Fds	Trimmed	−1,193,560	−$88.4M	3.5%
VS Vanguard Scottsdale Fds	Added	+1,434,397	+$86M	4.1%
JP J P Morgan Exchange Traded F	New	+1,364,694	+$69.7M	3.1%
VS Vanguard Scottsdale Fds	Trimmed	−1,070,122	−$62.8M	2.3%
VS Vanguard Scottsdale Fds	Trimmed	−995,776	−$46.9M	1.6%
VM Vanguard Malvern Fds	New	+222,166	+$17.3M	0.8%
IT Ishares Tr	Added	+80,543	+$5.59M	1.0%
IT Ishares Tr	Added	+92,227	+$4.97M	5.0%
IT Ishares Tr	Added	+53,379	+$4M	3.3%

Showing the 10 largest of 269 changes.

Q3 2025

quarter ended September 30, 2025 · filed October 07, 2025

Company	Action	Shares changed	Value of change	% of portfolio
VI Vanguard Index Fds	Added	+32,268	+$18.3M	16.4%
Microsoft Corp	Added	+21,875	+$10.9M	1.1%
PA Procter And Gamble Co	Added	+62,941	+$10M	0.5%
VT Vanguard Tax-managed Fds	Added	+166,847	+$9.51M	8.0%
IT Ishares Tr	Added	+115,031	+$7.13M	5.3%
IT Ishares Tr	Added	+57,755	+$6.31M	5.4%
VB Vanguard Bd Index Fds	Added	+83,304	+$6.13M	8.4%
IT Ishares Tr	Added	+85,851	+$4.57M	5.3%
IT Ishares Tr	Added	+50,148	+$4.19M	2.0%
VS Vanguard Scottsdale Fds	Added	+62,114	+$3.65M	5.8%

Showing the 10 largest of 239 changes.

Q2 2025

quarter ended June 30, 2025 · filed July 14, 2025

Company	Action	Shares changed	Value of change	% of portfolio
VS Vanguard Scottsdale Fds	Added	+106,707	+$6.27M	6.1%
VI Vanguard Index Fds	Added	+17,182	+$4.9M	2.6%
VB Vanguard Bd Index Fd Inc	Added	+54,410	+$4.01M	8.7%
IT Ishares Tr	Added	+70,294	+$3.75M	5.5%
VI Vanguard Index Fds	Added	+12,822	+$3.59M	0.7%
VI Vanguard Index Fds	Added	+10,515	+$2.49M	0.9%
AC American Century ETF Tr	New	+45,745	+$2.36M	0.1%
IT Ishares Tr	Added	+33,534	+$2.28M	3.3%
OR O Reilly Automotive Inc New	Added	+21,492	+$1.94M	0.1%
VT Vanguard Tax-managed Fd	Trimmed	−25,788	−$1.47M	8.2%

Showing the 10 largest of 282 changes.

Q1 2025

quarter ended March 31, 2025 · filed April 17, 2025

Company	Action	Shares changed	Value of change	% of portfolio
VI Vanguard Index Fds	Added	+13,730	+$7.06M	16.4%
VS Vanguard Scottsdale Fds	Added	+50,412	+$2.96M	6.2%
IT Ishares Tr	Added	+36,594	+$2.27M	3.1%
IT Ishares Tr	Added	+18,667	+$1.95M	5.7%
VS Vanguard Scottsdale Fds	Added	+18,890	+$1.54M	0.3%
VB Vanguard Bd Index Fd Inc	Added	+20,510	+$1.51M	9.1%
VS Vanguard Scottsdale Fds	Added	+27,543	+$1.28M	4.5%
VI Vanguard Index Fds	Trimmed	−3,341	−$1.24M	0.5%
IT Ishares Tr	Added	+15,067	+$879K	5.5%
DE Dimensional ETF Trust	Added	+26,133	+$799K	1.4%

Showing the 10 largest of 257 changes.

Q4 2024

quarter ended December 31, 2024 · filed January 14, 2025

Company	Action	Shares changed	Value of change	% of portfolio
VS Vanguard Scottsdale Fds	Added	+95,571	+$5.56M	5.9%
VB Vanguard Bd Index Fd Inc	Added	+72,275	+$5.2M	8.8%
DE Dimensional ETF Trust	Added	+103,017	+$4.25M	0.5%
VS Vanguard Scottsdale Fds	New	+51,544	+$4.14M	0.2%
VS Vanguard Scottsdale Fds	Added	+56,593	+$3.28M	0.2%
IT Ishares Tr	Added	+39,533	+$2.78M	1.8%
IT Ishares Tr	Added	+23,509	+$2.5M	0.5%
IT Ishares Tr	New	+25,823	+$2.39M	0.1%
SS Schwab Strategic Tr	Added	+120,597	+$2.23M	0.3%
VT Vanguard Tax-managed Fd	Added	+46,036	+$2.2M	7.4%

Showing the 10 largest of 243 changes.

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