Institutional Manager · CIK 0001902024

Austin Asset Management Co Inc

AUSTIN, TX · File #028-21488

Latest AUM

$608.7M

Positions

Top-10 Concentration

78.8%

Filings

Portfolio Value Over Time

2024-03

2024-06

2024-09

2024-12

2025-03

2025-06

2025-09

2025-12

Biggest QoQ Changes

Ranked by conviction flow (share change × current price) so mark-to-market moves don't dominate. Price effect column shows how much of the $ change was just the stock moving.

Action	Issuer	Ticker / CUSIP	Δ Shares	Flow ($)	Price Effect
ADD	NVIDIA CORPORATION	NVDA	+259,348	+$48.4M	-$18,641
REDUCE	DIMENSIONAL ETF TRUST	25434V708	-49,499	-$2.0M	+$4.2M
NEW	DELL TECHNOLOGIES INC	DELL	+15,550	+$2.0M	$0
ADD	VANGUARD BD INDEX FDS	921937819	+24,814	+$1.9M	-$33,586
REDUCE	AMERICAN CENTY ETF TR	025072885	-5,688	-$635,805	+$27,510
REDUCE	VANGUARD BD INDEX FDS	921937827	-6,771	-$533,621	-$18,333
REDUCE	DIMENSIONAL ETF TRUST	25434V401	-6,973	-$517,188	+$1.7M
ADD	VANGUARD INDEX FDS	922908553	+5,534	+$489,705	-$632,157
REDUCE	AMERICAN CENTY ETF TR	025072703	-4,980	-$409,950	+$151,709
REDUCE	VANGUARD MALVERN FDS	922020805	-8,234	-$407,253	-$124,210

Sector Allocation

Technology

16.7%$101.5M

Financials

4.4%$26.8M

Healthcare

0.7%$4.2M

Consumer Discretionary

0.4%$2.4M

Energy

0.3%$1.5M

Communication Services

0.2%$1.3M

Industrials

0.2%$1.2M

Consumer Staples

0.1%$420,866

Filing History

Feb 4, 202613F HOLDINGS REPORTQ/E Dec 202576 pos · $608.7M
Oct 24, 202513F HOLDINGS REPORTQ/E Sep 202574 pos · $548.4M
Jul 23, 202513F HOLDINGS REPORTQ/E Jun 202574 pos · $513.4M
Apr 23, 202513F HOLDINGS REPORTQ/E Mar 202581 pos · $480.1M
Jan 28, 202513F HOLDINGS REPORTQ/E Dec 202471 pos · $503.0M
Nov 1, 202413F HOLDINGS REPORTQ/E Sep 202467 pos · $513.6M
Aug 12, 202413F HOLDINGS REPORTQ/E Jun 202466 pos · $489.0M
Apr 26, 202413F HOLDINGS REPORTQ/E Mar 202464 pos · $470.7M
Oct 24, 202313F HOLDINGS REPORTQ/E Dec 202361 pos · $342.7M

Top 20 Holdings — Dec 2025

#	Issuer	Ticker	Shares	Value	% of Portfolio
1	DIMENSIONAL ETF TRUST	25434V708	4,033,193	$159.7M	26.60%
2	NVIDIA CORPORATION	NVDA	492,891	$91.9M	15.31%
3	DIMENSIONAL ETF TRUST	25434V401	949,391	$70.4M	11.73%
4	DIMENSIONAL ETF TRUST	25434V500	472,914	$32.9M	5.49%
5	ISHARES TR	46429B747	290,086	$29.7M	4.95%
6	PATHWARD FINANCIAL INC	CASH	0	$23.8M	3.96%
7	VANGUARD INDEX FDS	922908553	221,295	$19.6M	3.26%
8	DIMENSIONAL ETF TRUST	25434V724	331,156	$15.4M	2.57%
9	DIMENSIONAL ETF TRUST	25434V799	435,139	$15.0M	2.50%
10	DIMENSIONAL ETF TRUST	25434V666	430,083	$14.7M	2.45%
11	VANGUARD BD INDEX FDS	921937819	184,525	$14.4M	2.39%
12	DIMENSIONAL ETF TRUST	25434V831	372,830	$14.2M	2.36%
13	VANGUARD BD INDEX FDS	921937827	175,964	$13.9M	2.31%
14	DIMENSIONAL ETF TRUST	25434V807	211,643	$10.6M	1.76%
15	AMERICAN CENTY ETF TR	025072877	97,045	$9.9M	1.65%
16	DIMENSIONAL ETF TRUST	25434V609	156,761	$9.3M	1.55%
17	APPLE INC	AAPL	22,865	$6.2M	1.04%
18	VANGUARD MALVERN FDS	922020805	97,902	$4.8M	0.81%
19	SPDR S&P 500 ETF TR	SPY	7,016	$4.8M	0.80%
20	ELI LILLY & CO	LLY	3,334	$3.6M	0.60%