Mason Investment Advisory Services, Inc.
"13F equity value" = market value of this filer's US-listed long equity positions only. It excludes cash, bonds, non-US and short positions, so it understates a fund's true assets under management — often by a lot.
13F holdings are disclosed ~45 days after quarter-end, and they never reveal when within the quarter a fund actually bought. So any 13F-based summary is structurally late and blurred — this applies to every fund, including this one.
We backtested copying it anyway. Buying this fund's new positions the day each filing went public, over 23 quarters, returned +3.4% per quarter — versus +3.5% per quarter from simply owning every 13F stock. It beat that baseline in only 65.2% of quarters (excess t = -0.34, not statistically significant). Its filings tell you what it bought — not what you should buy.
Quarterly compounding, invested quarters only · entry 47 days after quarter-end (when 13F data becomes public)
Top 20 holdings of 79 · 2026 Q1
| Ticker | Value | Weight | QoQ |
|---|---|---|---|
| VLUE | $660M | | HOLD |
| AVUV | $313M | | HOLD |
| VSS | $278M | | HOLD |
| AVDV | $236M | | TRIM |
| AVSC | $223M | | HOLD |
| TGRT | $221M | | ADD |
| VBR | $61M | | HOLD |
| CGDV | $34M | | HOLD |
| MINT | $28M | | TRIM |
| CGXU | $24M | | ADD |
| CGGR | $15M | | ADD |
| DFAT | $8M | | HOLD |
| VNQI | $7M | | HOLD |
| SPY | $3M | | HOLD |
| XOM | $3M | | HOLD |
| EFV | $2M | | HOLD |
| FNDF | $2M | | HOLD |
| CVX | $2M | | HOLD |
| VUG | $2M | | ADD |
| DFAC | $1M | | HOLD |
QoQ vs previous quarter's share count · NEW = new position · ADD/TRIM = ±2% shares · HOLD = unchanged.
New positions in 2026 Q1
Method & Limitations
Method: a "new position" = held this quarter, absent last quarter (options excluded; stocks with <50 prior holders excluded to filter spin-off artifacts). Entry 47 days after quarter-end — the first day the public could act on the filing. Benchmark = equal-weighted universe of all 13F-held stocks. Limitations: quarterly snapshots can't see intra-quarter trades; survivorship bias — funds that shut down are absent, which flatters the sample. Statistics, not advice.