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Super Investors Austin Asset Management Co Inc
AA

Austin Asset Management Co Inc

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

Portfolio value
$747M
Positions
96
Quarter ended
September 30, 2026
Filed
October 29, 2026

Reported portfolio value by quarter (20 quarters reported)

$747M $278M
Q4 21 Q4 22 Q4 23 Q4 24 Q4 25 Q3 26

$320M in Q4 2021 → $747M 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
DE Dimensional ETF Trust 24.3% Added 2.0% 4,088,797 $182M
Nvidia Corporation 17.6% Trimmed 6.5% 576,513 $132M
DE Dimensional ETF Trust 10.5% Added 0.3% 943,709 $78.4M
IT Ishares Tr 5.8% Added 21% 432,049 $43.1M
DE Dimensional ETF Trust 4.6% Trimmed 1.5% 441,254 $34.2M
Pathward Financial Inc 3.9% Unchanged 0 $29.4M
VB Vanguard Bd Index Fds 3.8% Added 10% 394,166 $28.7M
VI Vanguard Index Fds 3.1% Added 4.8% 254,123 $22.8M
DE Dimensional ETF Trust 2.4% Added 2.9% 444,672 $17.9M
DE Dimensional ETF Trust 2.4% Trimmed 1.4% 319,216 $17.6M
DI Dfa Invt Dimensions Group In 2.3% New 407,439 $17.1M
DE Dimensional ETF Trust 2.2% Added 0.5% 436,215 $16.4M
AC American Centy ETF Tr 1.5% Added 0.4% 96,600 $11.4M
DE Dimensional ETF Trust 1.5% Trimmed 1.2% 200,872 $11.2M
DE Dimensional ETF Trust 1.3% Trimmed 2.9% 142,295 $9.45M
Apple Inc 1.1% Trimmed 4.1% 23,852 $7.94M
VB Vanguard Bd Index Fds 1.0% Trimmed 3.5% 101,081 $7.72M
Dell Technologies Inc 0.9% Trimmed 30% 12,733 $6.85M
SS State Str SPDR S&P 500 ETF T 0.7% Added 0.1% 7,213 $5.5M
UP United Parcel Svcs Inc 0.7% Unchanged 55,919 $5.23M
VM Vanguard Malvern Fds 0.6% Trimmed 0.6% 84,542 $4.16M
EL Eli Lilly & Co 0.5% Added 3.3% 3,253 $3.76M
AC American Centy ETF Tr 0.4% Trimmed 2.2% 33,684 $3.04M
DE Dimensional ETF Trust 0.4% Added 0.5% 74,600 $2.96M
DE Dimensional ETF Trust 0.4% Trimmed 1.0% 86,321 $2.91M
DE Dimensional ETF Trust 0.3% Trimmed 7.5% 68,201 $2.47M
IT Ishares Tr 0.3% Trimmed 6.4% 3,169 $2.43M
DI Dfa Invt Dimensions Group In 0.2% New 46,663 $1.75M
Microsoft Corp 0.2% Trimmed 1.0% 3,222 $1.65M
Amazon Com Inc 0.2% Trimmed 40% 6,428 $1.6M
Alphabet Inc 0.2% Trimmed 1.9% 4,234 $1.46M
DE Dimensional ETF Trust 0.2% Added 2.4% 15,363 $1.26M
Canadian Pacific Kansas City 0.1% Added 0.2% 12,874 $1.1M
GC Greenbrier Cos Inc 0.1% Unchanged 27,196 $1.09M
IE Invesco Exchange Traded Fd T 0.1% Trimmed 19% 19,666 $1.07M
AC American Centy ETF Tr 0.1% New 10,574 $1.04M
VI Vanguard Index Fds 0.1% Added 11% 2,567 $961K
Alphabet Inc 0.1% Trimmed 54% 2,728 $929K
IE Invesco Exchange Traded Fd T 0.1% Unchanged 4,371 $909K
Advanced Micro Devices Inc 0.1% Trimmed 0.2% 1,459 $892K
Exxonmobil Holdings Corp 0.1% New 5,461 $889K
Meta Platforms Inc 0.1% Added 1.4% 1,188 $862K
FF First Finl Bankshares Inc 0.1% Trimmed 18% 26,818 $851K
VI Vanguard Intl Equity Index F 0.1% Trimmed 1.5% 13,897 $824K
Linde PLC 0.1% New 1,692 $803K
AE Abrdn Etfs 0.1% Added 4.2% 30,230 $782K
VI Vanguard Index Fds 0.1% Unchanged 3,523 $761K
DE Dimensional ETF Trust 0.1% Added 0.1% 17,292 $749K
IT Ishares Tr 0.1% Trimmed 4.6% 7,012 $729K
TS Taiwan Semiconductor Manufac 0.1% Added 1.1% 1,537 $701K
Broadcom Inc 0.1% Trimmed 2.2% 1,916 $673K
AC American Centy ETF Tr 0.1% Added 5.8% 6,569 $618K
BH Berkshire Hathaway Inc Del 0.1% Trimmed 8.6% 1,230 $613K
Atlas Energy Solutions Inc 0.1% Unchanged 50,000 $601K
Nutex Health Inc 0.1% Unchanged 2,523 $534K
DE Dimensional ETF Trust 0.1% Added 51% 11,309 $526K
TF Truist Finl Corp 0.1% Unchanged 11,309 $524K
AC American Centy ETF Tr 0.1% Unchanged 5,910 $520K
Tesla Inc 0.1% Added 0.7% 1,462 $519K
Visa Inc 0.1% Trimmed 7.1% 1,436 $516K

Showing top 60 of 96 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 29, 2026

Company Action Shares changed Value of change % of portfolio
DI Dfa Invt Dimensions Group In New +407,439 +$17.1M 2.3%
DE Dimensional ETF Trust Exited −396,161 −$16.5M —
Nvidia Corporation Trimmed −40,052 −$9.15M 17.6%
IT Ishares Tr Added +75,137 +$7.49M 5.8%
DE Dimensional ETF Trust Added +79,736 +$3.54M 24.3%
Dell Technologies Inc Trimmed −5,486 −$2.95M 0.9%
VB Vanguard Bd Index Fds Added +37,270 +$2.72M 3.8%
DE Dimensional ETF Trust Exited −46,733 −$1.81M —
DI Dfa Invt Dimensions Group In New +46,663 +$1.75M 0.2%
Alphabet Inc Trimmed −3,250 −$1.11M 0.1%

Showing the 10 largest of 84 changes.

Q2 2026

quarter ended June 30, 2026 · filed July 31, 2026

Company Action Shares changed Value of change % of portfolio
Nvidia Corporation Added +122,577 +$24.5M 17.2%
IT Ishares Tr Added +46,362 +$4.74M 5.1%
VB Vanguard Bd Index Fds Added +50,337 +$3.86M 3.8%
Exxon Mobil Corp Exited −9,774 −$1.66M —
DE Dimensional ETF Trust Trimmed −33,761 −$1.5M 24.8%
DE Dimensional ETF Trust Trimmed −14,920 −$1.23M 5.1%
Amazon Com Inc Added +4,922 +$1.17M 0.4%
Alphabet Inc Added +3,043 +$1.08M 0.3%
Advanced Micro Devices Inc Trimmed −1,300 −$755K 0.1%
Atlas Energy Solutions Inc Trimmed −40,000 −$664K 0.1%

Showing the 10 largest of 70 changes.

Q1 2026

quarter ended March 31, 2026 · filed April 29, 2026

Company Action Shares changed Value of change % of portfolio
VB Vanguard Bd Index Fds Added +122,034 +$9.42M 3.9%
UP United Parcel Svcs Inc Added +59,384 +$5.84M 1.0%
VB Vanguard Bd Index Fds Trimmed −64,465 −$5.05M 1.4%
IT Ishares Tr Added +20,464 +$2.12M 5.3%
VI Vanguard Index Fds Added +15,333 +$1.36M 3.5%
DE Dimensional ETF Trust Trimmed −12,195 −$865K 10.9%
VM Vanguard Malvern Fds Trimmed −16,039 −$801K 0.7%
DE Dimensional ETF Trust Trimmed −10,223 −$727K 5.4%
Exxon Mobil Corp Added +4,003 +$679K 0.3%
Advanced Micro Devices Inc New +2,762 +$562K 0.1%

Showing the 10 largest of 70 changes.

Q4 2025

quarter ended December 31, 2025 · filed February 04, 2026

Company Action Shares changed Value of change % of portfolio
Nvidia Corporation Added +259,348 +$48.4M 15.1%
DE Dimensional ETF Trust Trimmed −49,499 −$1.96M 26.2%
Dell Technologies Inc New +15,550 +$1.96M 0.3%
VB Vanguard Bd Index Fds Added +24,814 +$1.93M 2.4%
AC American Centy ETF Tr Trimmed −5,688 −$636K 0.1%
VB Vanguard Bd Index Fds Trimmed −6,771 −$534K 2.3%
DE Dimensional ETF Trust Trimmed −6,973 −$517K 11.6%
VI Vanguard Index Fds Added +5,534 +$490K 3.2%
AC American Centy ETF Tr Trimmed −4,980 −$410K 0.5%
VM Vanguard Malvern Fds Trimmed −8,234 −$407K 0.8%

Showing the 10 largest of 60 changes.

Q3 2025

quarter ended September 30, 2025 · filed October 24, 2025

Company Action Shares changed Value of change % of portfolio
DE Dimensional ETF Trust Trimmed −108,270 −$4.18M 28.7%
DE Dimensional ETF Trust Trimmed −29,407 −$2.13M 12.6%
DE Dimensional ETF Trust Added +36,889 +$1.39M 2.5%
IT Ishares Tr Added +11,233 +$1.16M 5.4%
DE Dimensional ETF Trust Added +24,955 +$821K 2.6%
VI Vanguard Index Fds Added +7,515 +$687K 3.6%
Walmart Inc Trimmed −4,758 −$490K 0.1%
Microsoft Corp Trimmed −935 −$484K 0.3%
DE Dimensional ETF Trust Trimmed −5,733 −$256K 2.7%
VI Vanguard Intl Equity Index F New +1,836 +$253K —

Showing the 10 largest of 51 changes.

Q2 2025

quarter ended June 30, 2025 · filed July 23, 2025

Company Action Shares changed Value of change % of portfolio
DE Dimensional ETF Trust Added +188,037 +$6.74M 29.3%
AC American Centy ETF Tr Trimmed −49,723 −$5.01M 0.2%
DE Dimensional ETF Trust Trimmed −62,193 −$4.17M 12.9%
AC American Centy ETF Tr Trimmed −25,372 −$1.88M 0.7%
DE Dimensional ETF Trust Added +58,059 +$1.8M 2.4%
AC American Centy ETF Tr Exited −21,397 −$1.4M —
DE Dimensional ETF Trust Added +17,314 +$1.1M 5.9%
DE Dimensional ETF Trust Added +35,423 +$1.04M 0.3%
AC American Centy ETF Tr Trimmed −10,094 −$920K 1.7%
DE Dimensional ETF Trust Added +20,274 +$721K 2.3%

Showing the 10 largest of 65 changes.

Q1 2025

quarter ended March 31, 2025 · filed April 23, 2025

Company Action Shares changed Value of change % of portfolio
DE Dimensional ETF Trust Trimmed −111,376 −$3.67M 27.5%
EL Eli Lilly & Co New +3,734 +$3.08M 0.6%
VB Vanguard Bd Index Fds Trimmed −25,977 −$2.03M 3.0%
DE Dimensional ETF Trust Added +45,341 +$1.5M 2.1%
DE Dimensional ETF Trust Trimmed −24,192 −$1.46M 13.2%
DE Dimensional ETF Trust Trimmed −20,711 −$1.24M 5.8%
DE Dimensional ETF Trust Trimmed −25,769 −$1.06M 2.9%
IT Ishares Tr Exited −9,983 −$1.05M —
VB Vanguard Bd Index Fds Added +9,487 +$726K 2.5%
AC American Centy ETF Tr Trimmed −7,018 −$612K 1.9%

Showing the 10 largest of 72 changes.

Q4 2024

quarter ended December 31, 2024 · filed January 28, 2025

Company Action Shares changed Value of change % of portfolio
Nvidia Corporation Trimmed −274,709 −$36.9M 6.3%
DE Dimensional ETF Trust New +447,394 +$11.6M 2.3%
AC American Centy ETF Tr Added +49,621 +$4.81M 1.1%
DE Dimensional ETF Trust Trimmed −76,465 −$2.64M 28.3%
DE Dimensional ETF Trust Added +72,170 +$2.44M 1.7%
AC American Centy ETF Tr Added +23,197 +$1.42M 0.8%
VI Vanguard Index Fds Added +15,618 +$1.39M 3.6%
DE Dimensional ETF Trust Trimmed −47,665 −$1.25M 0.2%
AC American Centy ETF Tr Added +17,498 +$1.17M 0.3%
DE Dimensional ETF Trust Trimmed −15,946 −$1.04M 6.2%

Showing the 10 largest of 56 changes.

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