Institutional Manager · CIK 0001635007
Mason Investment Advisory Services, Inc.
Reston, VA · File #028-23779
Latest AUM
$2.11B
Positions
80
Top-10 Concentration
96.8%
Filings
20
Sector Allocation
Filing History
View all filings →- 13F COMBINATION REPORTQ/E Dec 202580 pos · $2.11B
- 13F COMBINATION REPORTQ/E Sep 202580 pos · $2.01B
- 13F COMBINATION REPORTQ/E Jun 202574 pos · $1.83B
- 13F COMBINATION REPORTQ/E Mar 202574 pos · $1.66B
- 13F COMBINATION REPORTQ/E Dec 202471 pos · $1.71B
- 13F COMBINATION REPORTQ/E Sep 202473 pos · $1.71B
- 13F COMBINATION REPORTQ/E Jun 202473 pos · $1.62B
- 13F COMBINATION REPORTQ/E Jun 202463 pos · $1.09B
- 13F COMBINATION REPORTQ/E Jun 202459 pos · $1.10B
- 13F COMBINATION REPORTQ/E Jun 202463 pos · $1.16B
- 13F COMBINATION REPORTQ/E Jun 202486 pos · $983.4M
- 13F COMBINATION REPORTQ/E Jun 202486 pos · $971.4M
- 13F HOLDINGS REPORTQ/E Jun 202495 pos · $1.16B
- 13F COMBINATION REPORTQ/E Jun 202488 pos · $871.1M
- 13F HOLDINGS REPORTQ/E Jun 202494 pos · $988.8M
- 13F HOLDINGS REPORTQ/E Jun 2024100 pos · $1.21B
- 13F HOLDINGS REPORTQ/E Jun 202484 pos · $958.0M
- 13F HOLDINGS REPORTQ/E Jun 202494 pos · $968.6M
- 13F HOLDINGS REPORTQ/E Jun 202478 pos · $673.5M
- 13F HOLDINGS REPORTQ/E Jun 202481 pos · $833.2M
Top 20 Holdings — Dec 2025
| # | Issuer | Ticker | Shares | Value | % of Portfolio |
|---|---|---|---|---|---|
| 1 | ISHARES TR | 46432F388 | 4,693,071 | $641.7M | 30.57% |
| 2 | AMERICAN CENTY ETF TR | 025072877 | 2,844,838 | $290.1M | 13.82% |
| 3 | VANGUARD INTL EQUITY INDEX F | 922042718 | 1,937,698 | $277.7M | 13.23% |
| 4 | T ROWE PRICE ETF INC | 87283Q842 | 5,391,884 | $238.6M | 11.37% |
| 5 | AMERICAN CENTY ETF TR | 025072802 | 2,415,798 | $227.0M | 10.81% |
| 6 | AMERICAN CENTY ETF TR | 025072323 | 3,607,787 | $211.9M | 10.10% |
| 7 | VANGUARD INDEX FDS | 922908611 | 285,194 | $60.4M | 2.88% |
| 8 | CAPITAL GROUP DIVIDEND VALUE | 14020W106 | 789,138 | $34.4M | 1.64% |
| 9 | PIMCO ETF TR | 72201R833 | 301,338 | $30.2M | 1.44% |
| 10 | CAPITAL GROUP INTL FOCUS EQT | 14019W109 | 707,368 | $20.9M | 1.00% |
| 11 | CAPITAL GROUP GROWTH ETF | 14020G101 | 284,304 | $12.6M | 0.60% |
| 12 | VANGUARD INTL EQUITY INDEX F | 922042676 | 160,296 | $7.3M | 0.35% |
| 13 | DIMENSIONAL ETF TRUST | 25434V609 | 120,225 | $7.2M | 0.34% |
| 14 | SPDR S&P 500 ETF TR | SPY | 5,252 | $3.6M | 0.17% |
| 15 | ISHARES TR | 464288877 | 33,071 | $2.4M | 0.11% |
| 16 | SCHWAB STRATEGIC TR | 808524755 | 44,934 | $2.0M | 0.10% |
| 17 | EXXON MOBIL CORP | XOM | 16,284 | $2.0M | 0.09% |
| 18 | CHEVRON CORP NEW | CVX | 10,246 | $1.6M | 0.07% |
| 19 | DIMENSIONAL ETF TRUST | 25434V708 | 38,862 | $1.5M | 0.07% |
| 20 | VANGUARD SCOTTSDALE FDS | 92206C102 | 25,094 | $1.5M | 0.07% |