Mason Investment Advisory Services, Inc. — 13F Holdings & Portfolio
CIK 1635007 · latest 13F-HR filed 2026-05-14
AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.
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AUM
$2.17B
Long-equity book
Holdings
79
Distinct positions
Period
2026-03-31
Filed 2026-05-14
Q/Q Activity
+3 / −4 / ↑19 / ↓19
vs 2025-12-31
Firm Profile & Key People
| Name | Title / Status | Ownership | Type |
|---|
Top Adds (vs prior quarter)
- AMERICAN CENTY ETF TR$22.9M +7.9%
- AMERICAN CENTY ETF TR$11.5M +5.4%
- CAPITAL GROUP INTL FOCUS EQT$3.0M +14.5%
- CAPITAL GROUP GROWTH ETF$2.0M +16.1%
- VANGUARD INDEX FDS$1.0M +123.0%
Top Trims
- T ROWE PRICE ETF INC-$17.8M -7.5%
- PIMCO ETF TR-$2.3M -7.5%
- ISHARES TR-$310.1K -41.8%
- MICROSOFT CORP-$232.5K -22.5%
- ALPHABET INC-$184.5K -29.5%
New Positions
- AMERICAN CENTY ETF TR$9.6M
- T ROWE PRICE ETF INC$223.2K
- TAIWAN SEMICONDUCTOR MANUFAC$203.1K
Exited Positions
- ISHARES TR$597.2K
- ISHARES TR$289.0K
- VANGUARD INTL EQUITY INDEX F$223.3K
- JPMORGAN CHASE & CO.$207.8K
All Holdings
Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).
| # | Issuer | Symbol | CUSIP | Value | Weight | Shares | Type |
|---|---|---|---|---|---|---|---|
| 1 | ISHARES TR | VLUE | 46432F388 | $660.5M | 30.50% | 4,644,885 | SH |
| 2 | AMERICAN CENTY ETF TR | AVUV | 025072877 | $313.0M | 14.45% | 2,833,098 | SH |
| 3 | VANGUARD INTL EQUITY INDEX F | VSS | 922042718 | $277.8M | 12.83% | 1,905,214 | SH |
| 4 | AMERICAN CENTY ETF TR | AVDV | 025072802 | $235.7M | 10.88% | 2,360,214 | SH |
| 5 | AMERICAN CENTY ETF TR | AVSC | 025072323 | $223.4M | 10.32% | 3,585,892 | SH |
| 6 | T ROWE PRICE ETF INC | TGRT | 87283Q842 | $220.8M | 10.19% | 5,616,586 | SH |
| 7 | VANGUARD INDEX FDS | VBR | 922908611 | $61.5M | 2.84% | 283,035 | SH |
| 8 | CAPITAL GROUP DIVIDEND VALUE | CGDV | 14020W106 | $34.2M | 1.58% | 803,438 | SH |
| 9 | PIMCO ETF TR | MINT | 72201R833 | $28.0M | 1.29% | 278,155 | SH |
| 10 | CAPITAL GROUP INTL FOCUS EQT | CGXU | 14019W109 | $23.9M | 1.11% | 811,694 | SH |
| 11 | CAPITAL GROUP GROWTH ETF | CGGR | 14020G101 | $14.7M | 0.68% | 365,075 | SH |
| 12 | AMERICAN CENTY ETF TR | AVTM | 02507A606 | $9.6M | 0.44% | 204,758 | SH |
| 13 | DIMENSIONAL ETF TRUST | DFAT | 25434V609 | $7.5M | 0.35% | 120,255 | SH |
| 14 | VANGUARD INTL EQUITY INDEX F | VNQI | 922042676 | $7.1M | 0.33% | 160,127 | SH |
| 15 | STATE STR SPDR S&P 500 ETF T | SPY | 78462F103 | $3.4M | 0.16% | 5,251 | SH |
| 16 | EXXON MOBIL CORP | XOM | 30231G102 | $2.8M | 0.13% | 16,274 | SH |
| 17 | ISHARES TR | EFV | 464288877 | $2.5M | 0.11% | 33,071 | SH |
| 18 | SCHWAB STRATEGIC TR | FNDF | 808524755 | $2.2M | 0.10% | 44,934 | SH |
| 19 | CHEVRON CORPORATION | CVX | 166764100 | $2.1M | 0.10% | 10,257 | SH |
| 20 | VANGUARD INDEX FDS | VUG | 922908736 | $1.8M | 0.08% | 4,163 | SH |
| 21 | DIMENSIONAL ETF TRUST | DFAC | 25434V708 | $1.5M | 0.07% | 38,485 | SH |
| 22 | VANGUARD SCOTTSDALE FDS | VGSH | 92206C102 | $1.5M | 0.07% | 25,246 | SH |
| 23 | APPLE INC | AAPL | 037833100 | $1.3M | 0.06% | 4,968 | SH |
| 24 | ISHARES TR | AOA | 464289859 | $1.2M | 0.05% | 13,444 | SH |
| 25 | WISDOMTREE TR | EZM | 97717W570 | $1.2M | 0.05% | 17,434 | SH |
| 26 | VANGUARD WORLD FD | VDE | 92204A306 | $1.2M | 0.05% | 6,667 | SH |
| 27 | STATE STR SPDR S&P MIDCAP 40 | MDY | 78467Y107 | $1.1M | 0.05% | 1,758 | SH |
| 28 | VANGUARD INDEX FDS | VTI | 922908769 | $1.1M | 0.05% | 3,294 | SH |
| 29 | SPDR SERIES TRUST | SPYM | 78464A854 | $994.1K | 0.05% | 12,988 | SH |
| 30 | VANGUARD SPECIALIZED FUNDS | VIG | 921908844 | $958.9K | 0.04% | 4,459 | SH |
| 31 | SPDR SERIES TRUST | SPYV | 78464A508 | $941.1K | 0.04% | 16,634 | SH |
| 32 | ISHARES TR | SCZ | 464288273 | $926.6K | 0.04% | 11,818 | SH |
| 33 | SPDR INDEX SHS FDS | GNR | 78463X541 | $885.4K | 0.04% | 11,857 | SH |
| 34 | VANGUARD INDEX FDS | VTV | 922908744 | $824.6K | 0.04% | 4,203 | SH |
| 35 | MICROSOFT CORP | MSFT | 594918104 | $798.8K | 0.04% | 2,158 | SH |
| 36 | VANGUARD MUN BD FDS | VTEB | 922907746 | $764.3K | 0.04% | 15,319 | SH |
| 37 | ISHARES TR | IWF | 464287614 | $753.1K | 0.03% | 1,766 | SH |
| 38 | VANGUARD INDEX FDS | VNQ | 922908553 | $722.6K | 0.03% | 8,147 | SH |
| 39 | ALBERTSONS COS INC | ACI | 013091103 | $719.4K | 0.03% | 42,219 | SH |
| 40 | ISHARES TR | IVV | 464287200 | $712.1K | 0.03% | 1,090 | SH |
| 41 | VANGUARD INDEX FDS | VXF | 922908652 | $668.8K | 0.03% | 3,250 | SH |
| 42 | VANGUARD WHITEHALL FDS | VYM | 921946406 | $649.2K | 0.03% | 4,384 | SH |
| 43 | VANGUARD WORLD FD | VAW | 92204A801 | $631.9K | 0.03% | 2,804 | SH |
| 44 | ARISTA NETWORKS INC | ANET | 040413205 | $608.4K | 0.03% | 4,955 | SH |
| 45 | VANGUARD INDEX FDS | VV | 922908637 | $532.6K | 0.02% | 1,782 | SH |
| 46 | ALPHABET INC | GOOG | 02079K107 | $532.4K | 0.02% | 1,856 | SH |
| 47 | VANGUARD INDEX FDS | VOO | 922908363 | $496.8K | 0.02% | 831 | SH |
| 48 | ISHARES TR | IJH | 464287507 | $494.3K | 0.02% | 7,319 | SH |
| 49 | ALPHABET INC | GOOGL | 02079K305 | $441.2K | 0.02% | 1,534 | SH |
| 50 | ISHARES TR | IWD | 464287598 | $432.1K | 0.02% | 2,022 | SH |
Filing History
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-03-31 | 2026-05-14 | $2.17B | 79 | 0001140361-26-021278 |
| 2025-12-31 | 2026-02-12 | $2.11B | 80 | 0001140361-26-004973 |
| 2025-09-30 | 2025-11-12 | $2.01B | 80 | 0001140361-25-041541 |