CIK: 0001635007
Total reported value
$2.2B
Reporting period: 2026-03-31 · Number of holdings: 79
Mason Investment Advisory Services, Inc. disclosed 79 holdings in its latest 13F filing for the period ending 2026-03-31, with total reported value of $2.2B and a quarterly turnover rate of 5.0%.
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Mason Investment Advisory Services, Inc.'s disclosed holdings carry a Herfindahl concentration index of 0.165 — mathematically equivalent to about 6 equally-sized positions, well below its 79 actual disclosed holdings. That gap points to a strategy built around a small core of high-conviction bets rather than broad diversification.
Position sizes vary widely across the portfolio (a coefficient of variation of 3.49), with a handful of outsized bets alongside many smaller positions.
No strong tilt toward either adding to existing winners or initiating outsized new positions was observed in the latest reported quarter.
Sector classification currently covers about 1% of this portfolio's disclosed value; the remainder includes holdings (e.g. unmapped tickers, options, or other security types) not yet covered by our sector mapping.
Trim TGRT
+4.2% -$17.8M
Add AVUV
-0.4% $22.9M
Trim VSS
-1.7% $30.9K
Add AVSC
-0.6% $11.5M
Trim MINT
-7.7% -$2.3M
Add CGXU
+14.7% $3.0M
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | VLUE | Ishares Msci USA Value Facto | ETF-Other | 30.50% | +0.05% | -1.03% | |
| 2 | AVUV | Avantis US Small Cap Value | ETF-Small Cap | 14.45% | +0.68% | -0.41% | |
| 3 | VSS | Vanguard Ftse All Wo X-us Sc | ETF-Other | 12.83% | -0.36% | -1.68% | |
| 4 | AVDV | Avantis Intl S/c Value ETF | ETF-Other | 10.88% | +0.11% | -2.30% | |
| 5 | AVSC | Avantis US Small Cap Equity | ETF-Small Cap | 10.32% | +0.26% | -0.61% | |
| 6 | TGRT | T. Rowe Price Growth ETF | ETF-Other | 10.19% | -1.13% | +4.17% | |
| 7 | VBR | Vanguard Small-cap Value ETF | ETF-Other | 2.84% | -0.03% | -0.76% | |
| 8 | CGDV | Cap Group Dividend Value | ETF-Other | 1.58% | -0.05% | +1.81% | |
| 9 | MINT | Pimco Enhanced Short Maturit | ETF-Other | 1.29% | -0.14% | -7.69% | |
| 10 | CGXU | Cap Group Intl Focus | ETF-Other | 1.11% | +0.12% | +14.75% | |
| 11 | CGGR | Cap Group Growth Equity | ETF-Other | 0.68% | +0.08% | +28.41% | |
| 12 | AVTM | Avantis Total Equity ETF | ETF-Other | 0.44% | +0.44% | NEW | |
| 13 | DFAT | Dimensional US Target Value | ETF-Other | 0.35% | +0.01% | +0.03% | |
| 14 | VNQI | Vanguard Glbl Ex-us Real Est | ETF-Other | 0.33% | -0.02% | -0.11% | |
| 15 | SPY | Ss Spdr S&p 500 ETF Trust-us | ETF-Large Cap & Growth | 0.16% | -0.01% | -0.02% | |
| 16 | XOM | Exxon Mobil CORP | Stock-Energy | 0.13% | +0.04% | -0.06% | |
| 17 | EFV | Ishares Msci Eafe Value ETF | ETF-Other | 0.11% | — | — | |
| 18 | FNDF | Schwab Fndmn Intl Lrg Co ETF | ETF-Other | 0.10% | — | — | |
| 19 | CVX | Chevron CORP | Stock-Energy | 0.10% | +0.03% | +0.11% | |
| 20 | VUG | Vanguard Growth ETF | ETF-Other | 0.08% | +0.04% | +149.13% | |
| 21 | DFAC | Dimensional US Core Equity 2 | ETF-Other | 0.07% | — | -0.97% | |
| 22 | VGSH | Vanguard Short-term Treasury | ETF-Gov Bonds | 0.07% | — | +0.61% | |
| 23 | AAPL | Apple INC | Stock-Tech | 0.06% | — | -1.29% | |
| 24 | AOA | Ishares Core 80/20 Aggressiv | ETF-Other | 0.05% | — | +17.35% | |
| 25 | EZM | Wisdomtree US Midcap Fund | ETF-Other | 0.05% | — | — | |
| 26 | VDE | Vanguard Energy ETF | ETF-Other | 0.05% | +0.01% | +2.13% | |
| 27 | MDY | State Street Spdr S&p Midcap | ETF-Other | 0.05% | — | — | |
| 28 | VTI | Vanguard Total Stock Mkt ETF | ETF-Other | 0.05% | — | +0.34% | |
| 29 | SPYM | Ste Str Spdr Pt S&p 500 ETF | ETF-Large Cap & Growth | 0.05% | — | — | |
| 30 | VIG | Vanguard Dividend Apprec ETF | ETF-Other | 0.04% | — | +0.22% | |
| 31 | SPYV | Ss Spdr P S&p 500 Value ETF | ETF-Large Cap & Growth | 0.04% | — | +0.13% | |
| 32 | SCZ | Ishares Msci Eafe Small-cap | ETF-Other | 0.04% | — | — | |
| 33 | GNR | State Street Spdr S&p Global | ETF-Other | 0.04% | — | — | |
| 34 | VTV | Vanguard Value ETF | ETF-Other | 0.04% | +0.01% | +13.47% | |
| 35 | MSFT | Microsoft CORP | Stock-Tech | 0.04% | -0.01% | +1.22% | |
| 36 | VTEB | Vanguard Tax-exempt Bond ETF | ETF-Other | 0.04% | +0.01% | +13.46% | |
| 37 | IWF | Ishares Russell 1000 Growth | ETF-Other | 0.03% | -0.01% | — | |
| 38 | VNQ | Vanguard Real Estate ETF | ETF-Other | 0.03% | — | -2.19% | |
| 39 | ACI | Albertsons Cos INC - Class A | Stock-Consumer Staples | 0.03% | — | +0.84% | |
| 40 | IVV | Ishares Core S&p 500 ETF | ETF-Large Cap & Growth | 0.03% | -0.01% | -6.03% | |
| 41 | VXF | Vanguard Extended Market ETF | ETF-Other | 0.03% | — | +0.09% | |
| 42 | VYM | Vanguard High Dvd Yield ETF | ETF-Other | 0.03% | — | -3.92% | |
| 43 | VAW | Vanguard Materials ETF | ETF-Other | 0.03% | — | -0.07% | |
| 44 | ANET | Arista Networks INC | Stock-Tech | 0.03% | -0.01% | -13.87% | |
| 45 | VV | Vanguard Large-cap ETF | ETF-Other | 0.02% | -0.01% | -16.14% | |
| 46 | GOOG | Alphabet Inc-cl C | Stock-Comm Services | 0.02% | -0.01% | -17.58% | |
| 47 | VOO | Vanguard S&p 500 ETF | ETF-Large Cap & Growth | 0.02% | -0.01% | -2.35% | |
| 48 | IJH | Ishares Core S&p Midcap ETF | ETF-Other | 0.02% | — | +0.01% | |
| 49 | GOOGL | Alphabet Inc-cl A | Stock-Comm Services | 0.02% | -0.01% | -23.26% | |
| 50 | IWD | Ishares Russell 1000 Value E | ETF-Other | 0.02% | -0.02% | -42.69% |
Performance for Q3 2026
+7.1%
Performance Last 4 Quarters
+42.4%
Based on 83% of reported portfolio value with available pricing
| Period | Holdings | Total value | Stability | Top holdings |
|---|---|---|---|---|
| 2026-03-31 | 79 | $2.2B | 5 | |
| 2025-12-31 | 80 | $2.1B | 8 | |
| 2025-09-30 | 80 | $2.0B | 19 | |
| 2025-06-30 | 74 | $1.8B | 0 | |
| 2025-03-31 | 74 | $1.7B | 0 | |
| 2024-12-31 | 71 | $1.7B | 0 | |
| 2024-09-30 | 73 | $1.7B | 0 | |
| 2024-06-30 | 73 | $1.6B | 0 | |
| 2024-03-31 | 67 | $1.4B | 0 | |
| 2023-12-31 | 64 | $1.4B | 0 | |
| 2023-09-30 | 63 | $1.1B | 0 | |
| 2023-06-30 | 63 | $1.2B | — | |
| 2023-03-31 | 59 | $1.1B | — | |
| 2022-12-31 | 86 | $983.4M | — | |
| 2022-09-30 | 88 | $871.1M | — | |
| 2022-06-30 | 86 | $971.4M | — | |
| 2022-03-31 | 95 | $1.2B | — | |
| 2021-12-31 | 100 | $1.2B | — | |
| 2021-09-30 | 94 | $968.6M | — | |
| 2021-06-30 | 94 | $988.8M | — | |
| 2021-03-31 | 84 | $958.0M | — | |
| 2020-12-31 | 81 | $833.2M | — | |
| 2020-09-30 | 75 | $697.3M | — | |
| 2020-06-30 | 78 | $673.5M | — | |
| 2020-03-31 | 80 | $590.2M | — | |
| 2019-12-31 | 90 | $680.1M | — | |
| 2019-09-30 | 84 | $624.1M | — | |
| 2019-06-30 | 84 | $601.3M | — | |
| 2019-03-31 | 80 | $361.7M | — |
Mason Investment Advisory Services, Inc.'s most significant position changes for 2026-03-31: New buy: Avantis Total Equity ETF (AVTM); Sold out: Ishares Russell 2000 Growth (IWO); Sold out: Ishares Russell 2000 ETF (IWM); Sold out: Vanguard Ftse All-world Ex-u (VEU); New buy: T Rowe Price Nat Res ETF (TURF).
| Period | Filed | Type | EDGAR |
|---|---|---|---|
| 2026-03-31 | 2026-05-14 | 13F-HR | View on EDGAR |
| 2025-12-31 | 2026-02-12 | 13F-HR | View on EDGAR |
| 2025-09-30 | 2025-11-12 | 13F-HR | View on EDGAR |
| 2025-06-30 | 2025-08-05 | 13F-HR | View on EDGAR |
| 2025-03-31 | 2025-05-01 | 13F-HR | View on EDGAR |
| 2024-12-31 | 2025-02-06 | 13F-HR | View on EDGAR |
| 2024-09-30 | 2024-11-12 | 13F-HR | View on EDGAR |
| 2024-06-30 | 2024-08-09 | 13F-HR | View on EDGAR |
| 2024-03-31 | 2024-05-13 | 13F-HR | View on EDGAR |
| 2023-12-31 | 2024-02-13 | 13F-HR | View on EDGAR |
| 2023-09-30 | 2024-08-08 | 13F-HR | View on EDGAR |
| 2023-06-30 | 2024-08-08 | 13F-HR | View on EDGAR |
| 2023-03-31 | 2024-08-08 | 13F-HR | View on EDGAR |
| 2022-12-31 | 2024-08-07 | 13F-HR | View on EDGAR |
| 2022-09-30 | 2024-08-07 | 13F-HR | View on EDGAR |
| 2022-06-30 | 2024-08-07 | 13F-HR | View on EDGAR |
| 2022-03-31 | 2024-08-07 | 13F-HR | View on EDGAR |
| 2021-12-31 | 2024-08-06 | 13F-HR | View on EDGAR |
| 2021-09-30 | 2024-08-06 | 13F-HR | View on EDGAR |
| 2021-06-30 | 2024-08-06 | 13F-HR | View on EDGAR |
| 2021-03-31 | 2024-08-06 | 13F-HR | View on EDGAR |
| 2020-12-31 | 2024-08-05 | 13F-HR | View on EDGAR |
| 2020-09-30 | 2024-08-05 | 13F-HR | View on EDGAR |
| 2020-06-30 | 2024-08-05 | 13F-HR | View on EDGAR |
| 2020-03-31 | 2024-08-05 | 13F-HR | View on EDGAR |
| 2019-12-31 | 2024-08-02 | 13F-HR | View on EDGAR |
| 2019-09-30 | 2024-08-02 | 13F-HR | View on EDGAR |
| 2019-06-30 | 2024-08-02 | 13F-HR | View on EDGAR |
| 2019-03-31 | 2024-08-02 | 13F-HR | View on EDGAR |
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