Institutional Manager · CIK 0001053013

AMARILLO NATIONAL BANK

AMARILLO, TX · File #028-03523

Latest AUM

$569.3M

Positions

128

Top-10 Concentration

62.0%

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
REDUCE	Oracle Systems	ORCL-PD	-11,384	-$2.2M	-$1.9M
REDUCE	iShares Core MSCI Intl Dev Mkts ETF	46435G326	-21,064	-$1.7M	+$1.5M
ADD	iShares Core International Aggt Bd ETF	46435G672	+27,665	+$1.4M	-$666,221
EXITED	Zoetis Inc	98978V103	-6,334	-$926,791	$0
ADD	iShares iBoxx $ High Yield Corp Bd ETF	464288513	+11,442	+$922,568	-$113,330
REDUCE	Prosperity Bancshares Inc	PB	-8,260	-$570,849	+$170,516
NEW	W.W. Grainger Inc.	384802104	+318	+$320,878	$0
NEW	Unitedhealth Group Inc	UNH	+890	+$293,798	$0
REDUCE	Vanguard Index Total Stock Mkt ETF	922908769	-864	-$289,673	+$13,177
REDUCE	Nvidia Corp	NVDA	-1,485	-$276,953	-$3,840

Sector Allocation

Technology

5.8%$32.7M

Financials

2.2%$12.6M

Consumer Staples

1.8%$10.3M

Consumer Discretionary

1.1%$6.2M

0.8%$4.8M

0.8%$4.4M

0.6%$3.6M

0.6%$3.3M

Filing History

Jan 28, 202613F HOLDINGS REPORTQ/E Dec 2025128 pos · $569.3M
Oct 16, 202513F HOLDINGS REPORTQ/E Sep 2025127 pos · $568.8M
Jul 16, 202513F HOLDINGS REPORTQ/E Jun 2025125 pos · $538.0M
Apr 22, 202513F HOLDINGS REPORTQ/E Mar 2025132 pos · $514.0M
Jan 30, 202513F HOLDINGS REPORTQ/E Dec 2024139 pos · $544.8M
Oct 24, 202413F HOLDINGS REPORTQ/E Sep 2024143 pos · $547.4M
Jul 11, 202413F HOLDINGS REPORTQ/E Jun 2024150 pos · $525.7M
Apr 19, 202413F HOLDINGS REPORTQ/E Mar 2024163 pos · $535.8M
Oct 30, 202313F HOLDINGS REPORTQ/E Dec 2023168 pos · $477.6M

Top 20 Holdings — Dec 2025

#	Issuer	Ticker	Shares	Value	% of Portfolio
1	iShares Core S&P 500 ETF	464287200	107,860	$73.9M	13.97%
2	iShares Core MSCI Intl Dev Mkts ETF	46435G326	612,602	$50.5M	9.56%
3	iShares Core US Aggregate Bond ETF	464287226	400,562	$40.0M	7.57%
4	iShares Core International Aggt Bd ETF	46435G672	573,747	$28.7M	5.43%
5	iShares S&P 500 Value ETF	464287408	130,586	$27.7M	5.24%
6	S&P Depositary Receipt	SPY	35,138	$24.0M	4.53%
7	iShares S&P 500 Value ETF	464287408	109,895	$23.3M	4.41%
8	iShares MSCI Emerging Markets ETF	464287234	390,997	$21.4M	4.05%
9	iShares S&P 500 Growth ETF	464287309	172,919	$21.3M	4.03%
10	iShares iBoxx $ High Yield Corp Bd ETF	464288513	213,818	$17.2M	3.26%
11	iShares Russell Mid-Cap ETF	464287499	151,829	$14.6M	2.76%
12	iShares Russell 2000 ETF	464287655	53,684	$13.2M	2.50%
13	iShares S&P 500 Growth ETF	464287309	90,779	$11.2M	2.12%
14	Nvidia Corp	NVDA	46,527	$8.7M	1.64%
15	iShares MSCI Emerging Markets ETF	464287234	157,830	$8.6M	1.63%
16	Apple Computer Inc	AAPL	30,447	$8.3M	1.57%
17	Wal-Mart Stores Inc	WMT	74,177	$8.3M	1.56%
18	JP Morgan Chase & Co Com	VYLD	24,974	$8.0M	1.52%
19	Microsoft Corp.	MSFT	16,054	$7.8M	1.47%
20	iShares MSCI EAFE Index Fund	464287465	77,694	$7.5M	1.41%