Mason Investment Advisory Services, Inc.

RIA/Wealth

Mason Investment Advisory Services, Inc. is a RIA/Wealth based in Reston, VA led by Christopher Lee Schreiner, reporting $13.2B in AUM as of Q3 2025 with 99% ETF concentration, 96% concentrated in top 10 holdings, and 29% allocation to VLUE.

CEOChristopher Lee Schreiner

Portfolio Value: $2.0B
Positions: 80
Top Holding: VLUE at 29.29%
Last Reported: Q3 2025

Address11921 Freedom Drive, Suite 1000, Reston, VA, 20190, United States

Top Holdings

Largest long holdings in Mason Investment Advisory Services, Inc.'s portfolio (96.1% of total portfolio)

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Holding	Sector	Position	Weight	Traded	Ownership	Owned Since
1 iShares MSCI USA Value Factor VLUE	ETF ETF	$588.1M	29.29%	+$4.9M Bought	— 4.7M shares	Q2 2019 Held for 6y 5m
2 Avantis U.S. Small Cap Value AVUV	ETF ETF	$275.5M	13.72%	+$632.3K Bought	— 2.8M shares	Q4 2021 Held for 3y 11m
3 Vanguard FTSE All-World EX-US Small-Cap Index Fund VSS	ETF ETF	$270.6M	13.48%	-$5.4M Sold	— 1.9M shares	Q1 2019 Held for 6y 8m
4 T. Rowe Price Growth TGRT	ETF ETF	$234.8M	11.70%	-$4.9M Sold	— 5.4M shares	Q2 2024 Held for 1y 5m
5 Avantis International Small Cap Value AVDV	ETF ETF	$213.3M	10.62%	-$5.4M Sold	— 2.4M shares	Q4 2022 Held for 2y 11m
6 Avantis U.S. Small Cap Equity AVSC	ETF ETF	$201.0M	10.01%	-$222.7K Sold	— 3.5M shares	Q1 2023 Held for 2y 8m
7 Vanguard Small-Cap Value VBR	ETF ETF	$58.7M	2.93%	+$75.8K Bought	— 281.5K shares	Q1 2019 Held for 6y 8m
8 PIMCO Enhanced Short Maturity Active Exchange-Traded Fund MINT	ETF ETF	$49.0M	2.44%	+$142.2K Bought	— 486.3K shares	Q1 2019 Held for 6y 8m
9 CGDV Capital Group Dividend Value CGDV	ETF ETF	$20.0M	1.00%	+$1.4M Bought	— 476.4K shares	Q1 2024 Held for 1y 8m
10 CGXU Capital Group International Focus Equity CGXU	ETF ETF	$18.5M	0.92%	+$9.5M Bought	— 624.4K shares	Q2 2024 Held for 1y 5m

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Changes

Portfolio activity, position movements, and quarter-over-quarter changes in Mason Investment Advisory Services, Inc.'s latest filing

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Market Value

$2.0B

Prior: $1.8B

Q/Q Change

+9.46%

+$173.5M

Net Flows % of MV

+0.371%

Turnover Ratio

1.06%

New Purchases

8 stocks

$4.2M

Added To

42 stocks

+$20.6M

Sold Out Of

3 stocks

$848.8K

Reduced Holdings

17 stocks

-$16.5M

Increased Positions

Position	Shares Δ	Change
1 S&P Global SPGI	New	0 → 5.3K +$2.6M
2 AllianzIM U.S. Large Cap Buffer20 JULW	New	0 → 7.7K +$295.1K
3 Berkshire Hathaway BRK.B	New	0 → 488.0 +$245.3K
4 iShares Russell Top 200 Growth IWY	New	0 → 828.0 +$226.6K
5 Vanguard FTSE All-World Ex-US ETF VEU	New	0 → 3.0K +$216.2K

Decreased Positions

Position	Shares Δ	Change
1 Hess HES	Sold	2.5K → 0 −$352.2K
2 NVBW AllianzIM U.S. Large Cap Buffer20 Nov NVBW	Sold	9.2K → 0 −$294.9K
3 Procter & Gamble PG	Sold	1.3K → 0 −$201.7K
4 Visa V	-31.86%	1.2K → 787.0 −$125.6K
5 Intuit INTU	-24.47%	613.0 → 463.0 −$102.4K