Q3 2026 13F · SEC CIK 1902024

Austin Asset Management Co Inc

Wealth managerFiled 2026-10-29 for Q3 2026. Open the filing ↗ · All SEC filings ↗

Reported 13F value: $746.7M
Reported positions: 96
Top holdings a year, 3 yrs: +18.8%
Assets under management: $1.9B

Austin Asset Management Co Inc is a wealth manager that reported 96 positions worth $746.7M in its Q3 2026 13F, filed 2026-10-29. Its largest holdings were Dimensional ETF Trust (DFAC, 24.3%), Nvidia Corporation (NVDA, 17.6%), Dimensional ETF Trust (DFUS, 10.5%). A portfolio copying its top holdings returned 18.8% a year over the last 3 years, against 20.4% for the S&P 500.

Austin Asset Management Co Inc holdings largest 50 of 96 positions.

Weights are shares of the filer's total reported 13F value, compared with Q2 2026. Share changes may reflect splits; weight changes also reflect price moves. A 13F shows long US-listed positions only, up to 135 days after the fact.

Austin Asset Management Co Inc 13F holdings
Stock	% of 13F value	Q2 2026	Shares	Share change	Reported value
DFACDimensional ETF Trust	24.3%	24.8%	4,088,797	+2.0%	$181.7M
NVDANvidia Corporation	17.6%	17.2%	576,513	-6.5%	$131.7M
DFUSDimensional ETF Trust	10.5%	10.7%	943,709	+0.3%	$78.4M
STIPIshares Tr	5.8%	5.1%	432,049	+21.1%	$43.1M
DFASDimensional ETF Trust	4.6%	5.1%	441,254	-1.5%	$34.2M
CASHPathward Financial Inc	3.9%	2.3%	0	—	$29.4M
BIVVanguard Bd Index Fds	3.8%	3.8%	394,166	+10.4%	$28.7M
VNQVanguard Index Fds	3.0%	3.3%	254,123	+4.8%	$22.8M
DFLVDimensional ETF Trust	2.4%	2.4%	444,672	+2.9%	$17.9M
DFUVDimensional ETF Trust	2.4%	2.5%	319,216	-1.4%	$17.6M
DUHPDfa Invt Dimensions Group in	2.3%	—	407,439	—	$17.1M
DFICDimensional ETF Trust	2.2%	2.3%	436,215	+0.5%	$16.4M
AVUVAmerican Centy ETF Tr	1.5%	1.7%	96,600	+0.4%	$11.4M
DFIVDimensional ETF Trust	1.5%	1.5%	200,872	-1.2%	$11.2M
DFATDimensional ETF Trust	1.3%	1.4%	142,295	-2.9%	$9.5M
AAPLApple Inc	1.1%	1.0%	23,852	-4.1%	$7.9M
BSVVanguard Bd Index Fds	1.0%	1.1%	101,081	-3.5%	$7.7M
DELLDell Technologies Inc	0.9%	1.1%	12,733	-30.1%	$6.8M
SPYState Str Spdr S&p 500 ETF T	0.7%	0.8%	7,213	+0.1%	$5.5M
UPSUnited Parcel Svcs Inc	0.7%	0.8%	55,919	+0.0%	$5.2M
VTIPVanguard Malvern Fds	0.6%	0.6%	84,542	-0.6%	$4.2M
LLYEli Lilly & Co	0.5%	0.5%	3,253	+3.3%	$3.8M
AVDEAvantis International Equity ETF	0.4%	0.4%	33,684	-2.2%	$3.0M
DFEMDimensional ETF Trust	0.4%	0.4%	74,600	+0.5%	$3.0M
DIHPDimensional International High Profitabi	0.4%	0.4%	86,321	-1.0%	$2.9M
DFISDimensional ETF Trust	0.3%	0.4%	68,201	-7.5%	$2.5M
IVVIshares Tr	0.3%	0.4%	3,169	-6.4%	$2.4M
DFSVDfa Invt Dimensions Group in	0.2%	—	46,663	—	$1.7M
MSFTMicrosoft Corp	0.2%	0.2%	3,222	-1.0%	$1.7M
AMZNAmazon Com Inc	0.2%	0.4%	6,428	-39.9%	$1.6M
GOOGLAlphabet Inc	0.2%	0.2%	4,234	-1.9%	$1.5M
DFAWDimensional ETF Trust	0.2%	0.2%	15,363	+2.4%	$1.3M
CPCanadian Pacific Kansas City	0.1%	0.2%	12,874	+0.2%	$1.1M
GBXGreenbrier Cos Inc	0.1%	0.2%	27,196	+0.0%	$1.1M
PRFInvesco Exchange Traded Fd T	0.1%	0.2%	19,666	-19.0%	$1.1M
AVGEAmerican Centy ETF Tr	0.1%	—	10,574	—	$1.0M
VTIVanguard Index Fds	0.1%	0.1%	2,567	+11.0%	$961K
GOOGAlphabet Inc	0.1%	0.3%	2,728	-54.4%	$929K
RSPInvesco Exchange Traded Fd T	0.1%	0.1%	4,371	+0.0%	$909K
AMDAdvanced Micro Devices Inc	0.1%	0.1%	1,459	-0.2%	$892K
XOMExxonmobil Holdings Corp	0.1%	—	5,461	—	$889K
METAMeta Platforms Inc	0.1%	0.1%	1,188	+1.4%	$862K
FFINFirst Finl Bankshares Inc	0.1%	0.2%	26,818	-17.7%	$851K
VWOVanguard Intl Equity Index F	0.1%	0.1%	13,897	-1.5%	$824K
LINLinde PLC	0.1%	—	1,692	—	$803K
BCIAbrdn Etfs	0.1%	0.1%	30,230	+4.2%	$782K
VTVVanguard Index Fds	0.1%	0.1%	3,523	+0.0%	$761K
DISVDimensional ETF Trust	0.1%	0.1%	17,292	+0.1%	$749K
EFAIshares Tr	0.1%	0.1%	7,012	-4.6%	$729K
TSMTaiwan Semiconductor Manufac	0.1%	0.1%	1,537	+1.1%	$701K

What Austin Asset Management Co Inc bought and sold in Q3 2026, against Q2 2026.

New positions

Q2 2026's filing was too long to tell new positions apart.

Added to

Reduced

GOOG Alphabet Inc-54.4% shares
AMZN Amazon Com Inc-39.9% shares
DELL Dell Technologies Inc-30.1% shares
PRF Invesco Exchange Traded Fd T-19.0% shares
FFIN First Finl Bankshares Inc-17.7% shares
DFIS Dimensional ETF Trust-7.5% shares
NVDA Nvidia Corporation-6.5% shares
IVV Ishares Tr-6.4% shares

Left the top 50

DUHP Dimensional ETF Trustwas 2.3%
DFSV Dimensional US Small Capwas 0.3%
AESI Atlas Energy Solutions Incwas 0.1%
AVGO Broadcom Incwas 0.1%
BRK-B Berkshire Hathaway Inc Delwas 0.1%

Share counts compared with the Q2 2026 13F; a split also changes share counts. The latest filing lists more than 50 positions, so a position that left the top 50 may still be held.

How the holdings did against the S&P 500.

1 year: +21.4% /yr; S&P 500 +20.1%
3 years: +18.8% /yr; S&P 500 +20.4%
5 years: +11.5% /yr; S&P 500 +13.0%

A portfolio of the filer's 20 largest 13F positions, weighted by value, bought the trading day after each 13F was filed and held until the next one was: what copying this filer could have earned. 13Fs show long US-listed positions only, so this is an estimate of the stock picks, not the fund's reported returns.

Reported 13F value by quarter.

13F value by quarter
Quarter	13F value	Positions
Q3 2026	$746.7M	96
Q2 2026	$717.5M	94
Q1 2026	$608.3M	85
Q4 2025	$608.7M	76
Q3 2025	$548.4M	74
Q2 2025	$513.4M	74
Q1 2025	$480.1M	77
Q4 2024	$503.0M	71
Q3 2024	$513.6M	67
Q2 2024	$489.0M	66
Q1 2024	$470.7M	64
Q4 2023	$379.6M	58

Questions about Austin Asset Management Co Inc's portfolio

What stocks does Austin Asset Management Co Inc own?

Austin Asset Management Co Inc's latest 13F, for Q3 2026 and filed Oct 29, 2026, lists 96 positions worth $746.7M. The largest are Dimensional ETF Trust (DFAC) at 24.3%, Nvidia Corporation (NVDA) at 17.6%, Dimensional ETF Trust (DFUS) at 10.5%, Ishares Tr (STIP) at 5.8% and Dimensional ETF Trust (DFAS) at 4.6%.

What did Austin Asset Management Co Inc buy last quarter?

In Q3 2026, Austin Asset Management Co Inc added Ishares Tr (STIP) (+21.1% shares), Vanguard Index Fds (VTI) (+11.0% shares) and Vanguard Bd Index Fds (BIV) (+10.4% shares), compared with its Q2 2026 filing.

What did Austin Asset Management Co Inc sell last quarter?

In Q3 2026, Austin Asset Management Co Inc cut from its top 50 Dimensional ETF Trust (DUHP), cut from its top 50 Dimensional US Small Cap (DFSV), cut from its top 50 Atlas Energy Solutions Inc (AESI), cut from its top 50 Broadcom Inc (AVGO), cut from its top 50 Berkshire Hathaway Inc Del (BRK-B), Alphabet Inc (GOOG) (-54.4% shares), Amazon Com Inc (AMZN) (-39.9% shares) and Dell Technologies Inc (DELL) (-30.1% shares), compared with its Q2 2026 filing.

How has Austin Asset Management Co Inc's portfolio performed?

A portfolio copying Austin Asset Management Co Inc's 20 largest 13F holdings each quarter, from the day each filing was public, returned +18.8% a year over the last 3 years, against +20.4% for the S&P 500. Over 1 year: +21.4% against +20.1%. Over 5 years: +11.5% a year against +13.0%.

When is Austin Asset Management Co Inc's next 13F filing due?

13F filings are due 45 days after each quarter ends. Austin Asset Management Co Inc's filing for the quarter ending Dec 31, 2026 is due by Feb 14, 2027; this page updates the day after it is published.

How much money does Austin Asset Management Co Inc manage?

Austin Asset Management Co Inc reported $1.9B of regulatory assets under management on its latest SEC Form ADV. Its 13F, which covers only US-listed stocks and options, totals $746.7M.