Vault-13

Asset Management Advisors, LLC

OKLAHOMA CITY, OK · CIK 1596355 · 13F filing filed 2026-07-02

SEC-registered investment adviser since 1999 · limited liability company

$180.8m reported value +9.4% vs Q1 2026
17positions
86.9%in top 10
0 new 7 added 9 reduced 2 sold out vs Q1 2026

Holdings, Q2 2026

The small lines show how much was held over the last 4 quarters (adjusted for stock splits).

#SecurityTickerShares Value% of portfolioChangeShares change
1 BERKSHIRE HATHAWAY INC DEL CL B NEW BRK.B BRK.B 112,220 $56.2m31.06% 31.06% AddedShares held: Q3 2025 112.6k, Q4 2025 111.8k, Q1 2026 111.9k, Q2 2026 112.2k +342 +342 0.3%
2 MICRON TECHNOLOGY INC COM MU MU 17,717 $20.5m11.31% 11.31% ReducedShares held: Q3 2025 41.2k, Q4 2025 27.8k, Q1 2026 20.4k, Q2 2026 17.7k -2.7k -2,670 -13.1%
3 BROOKFIELD CORP CL A LTD VT SH BN BN 345,500 $14.7m8.14% 8.14% AddedShares held: Q3 2025 342.1k, Q4 2025 341.4k, Q1 2026 341.6k, Q2 2026 345.5k +3.9k +3,925 1.1%
4 WILLIAMS COS INC COM WMB WMB 172,871 $12.9m7.11% 7.11% ReducedShares held: Q3 2025 174.7k, Q4 2025 173.7k, Q1 2026 173.6k, Q2 2026 172.9k -745 -745 -0.4%
5 ALPHABET INC CAP STK CL A GOOGL GOOGL 33,219 $11.9m6.57% 6.57% AddedShares held: Q3 2025 33.2k, Q4 2025 33.1k, Q1 2026 33.2k, Q2 2026 33.2k +28 +28 0.1%
6 NEXTERA ENERGY INC COM NEE NEE 115,311 $10.1m5.60% 5.60% ReducedShares held: Q3 2025 115.7k, Q4 2025 115.4k, Q1 2026 115.5k, Q2 2026 115.3k -180 -180 -0.2%
7 APPLE INC COM AAPL AAPL 34,343 $9.9m5.50% 5.50% AddedShares held: Q3 2025 33.5k, Q4 2025 33.5k, Q1 2026 33.6k, Q2 2026 34.3k +760 +760 2.3%
8 ALLY FINL INC COM ALLY ALLY 159,750 $7.3m4.06% 4.06% ReducedShares held: Q3 2025 166.1k, Q4 2025 166.3k, Q1 2026 166.0k, Q2 2026 159.8k -6.3k -6,280 -3.8%
9 BROOKFIELD RENEWABLE CORP CL A SUB VTG CL A SUB VTG 190,935 $7.1m3.92% 3.92% AddedShares held: Q3 2025 302.8k, Q4 2025 190.7k, Q1 2026 190.9k, Q2 2026 190.9k +45 +45 0.0%
10 LENNAR CORP CL A LEN LEN 72,007 $6.5m3.60% 3.60% AddedShares held: Q3 2025 55.0k, Q4 2025 71.5k, Q1 2026 71.7k, Q2 2026 72.0k +315 +315 0.4%
11 OCCIDENTAL PETE CORP COM OXY OXY 116,545 $5.7m3.13% 3.13% ReducedShares held: Q3 2025 123.8k, Q4 2025 124.2k, Q1 2026 122.3k, Q2 2026 116.5k -5.7k -5,720 -4.7%
12 VERISIGN INC COM VRSN VRSN 20,405 $5.1m2.84% 2.84% AddedShares held: Q3 2025 20.4k, Q4 2025 20.3k, Q1 2026 20.4k, Q2 2026 20.4k +25 +25 0.1%
13 VERIZON COMMUNICATIONS INC COM VZ VZ 116,572 $4.9m2.73% 2.73% ReducedShares held: Q3 2025 117.9k, Q4 2025 120.3k, Q1 2026 120.4k, Q2 2026 116.6k -3.8k -3,800 -3.2%
14 CARMAX INC COM KMX KMX 79,419 $4.2m2.32% 2.32% ReducedShares held: Q3 2025 45.6k, Q4 2025 81.7k, Q1 2026 82.2k, Q2 2026 79.4k -2.8k -2,760 -3.4%
15 ACCENTURE PLC IRELAND SHS CLASS A ACN ACN 26,295 $3.3m1.81% 1.81% ReducedShares held: Q3 2025 16.9k, Q4 2025 17.5k, Q1 2026 26.4k, Q2 2026 26.3k -85 -85 -0.3%
16 SOUTHERN CO COM SO SO 3,000 $287.1k0.16% 0.16% UnchangedShares held: Q3 2025 3.0k, Q4 2025 3.0k, Q1 2026 3.0k, Q2 2026 3.0k
17 VANGUARD ADMIRAL FDS INC 500 VAL IDX FD VOOV VOOV 1,253 $274.7k0.15% 0.15% ReducedShares held: Q3 2025 1.5k, Q4 2025 1.4k, Q1 2026 1.3k, Q2 2026 1.3k -25 -25 -2.0%

Sold out since Q1 2026

SecurityTickerShares held beforeValue then
MILLROSE PPTYS INC MRP MRP 27,975 $783.3k28.0k shares
EXXON MOBIL CORP XOM XOM 1,205 $204.5k1.2k shares