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Mason Investment Advisory Services, Inc. — 13F Holdings & Portfolio

CIK 1635007 · latest 13F-HR filed 2026-08-13

Backtest portfolio

Mason Investment Advisory Services, Inc. manages $2.63B in 13F-reported U.S. long-equity assets across 84 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are VLUE (33.98%), AVUV (13.40%), VSS (11.17%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 9 new positions, exited 4, added to 53, and trimmed 10.

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.

Filer Information
Address
11921 FREEDOM DRIVE
SUITE 1000
RESTON, VA 20190
Phone
(703) 716-6000
Filing Manager
Mason Investment Advisory Services, Inc.
RESTON, VA
Signatory
Jack Delaney
Chief Compliance Officer
Loading holdings…
AUM

$2.63B

Long-equity book

Holdings

84

Distinct positions

Period

2026-06-30

Filed 2026-08-13

Q/Q Activity

+9 / −4 / ↑53 / ↓10

vs 2026-03-31

Firm Profile & Key People
Name Title / Status Ownership Type

Top Adds (vs prior quarter)

  • ISHARES TR$232.9M +35.3%
  • T ROWE PRICE EXCHANGE-TRADED$55.9M +25060.6%
  • AMERICAN CENTY ETF TR$39.4M +12.6%
  • T ROWE PRICE EXCHANGE-TRADED$37.4M +16.9%
  • AMERICAN CENTY ETF TR$37.2M +16.6%
Show all 53 →

Top Trims

  • EXXON MOBIL CORP-$548.2K -19.9%
  • CHEVRON CORPORATION-$486.8K -22.9%
  • VANGUARD WORLD FD-$164.6K -14.3%
  • ALBERTSONS COMPANIES INC-$142.1K -19.8%
  • ISHARES TR-$138.5K -33.2%
Show all 10 →

New Positions

  • FIDELITY COVINGTON TRUST$657.6K
  • VANGUARD CHARLOTTE FDS$368.4K
  • SPDR SERIES TRUST$346.8K
  • SCHWAB STRATEGIC TR$338.5K
  • AIM ETF PRODUCTS TRUST$304.3K
Show all 9 →

Exited Positions

  • AIM ETF PRODUCTS TRUST$298.3K
  • INGREDION INC$231.1K
  • INTUIT$217.5K
  • ISHARES TR$206.0K
Show all 4 →
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 $893.4M 33.98% 4,471,056 SH
2 AMERICAN CENTY ETF TR AVUV 025072877 $352.3M 13.40% 2,824,089 SH
3 VANGUARD INTL EQUITY INDEX F VSS 922042718 $293.6M 11.17% 1,902,746 SH
4 AMERICAN CENTY ETF TR AVSC 025072323 $260.6M 9.91% 3,553,024 SH
5 T ROWE PRICE EXCHANGE-TRADED TGRT 87283Q842 $258.2M 9.82% 5,646,517 SH
6 AMERICAN CENTY ETF TR AVDV 025072802 $242.3M 9.22% 2,351,220 SH
7 VANGUARD INDEX FDS VBR 922908611 $68.6M 2.61% 282,251 SH
8 T ROWE PRICE EXCHANGE-TRADED TURF 87283Q743 $56.1M 2.14% 1,806,498 SH
9 CAPITAL GROUP DIVIDEND VALUE CGDV 14020W106 $41.6M 1.58% 844,702 SH
10 CAPITAL GROUP INTL FOCUS EQT CGXU 14019W109 $30.9M 1.18% 892,693 SH
11 PIMCO ETF TR MINT 72201R833 $27.8M 1.06% 275,603 SH
12 CAPITAL GROUP GROWTH ETF CGGR 14020G101 $19.6M 0.74% 414,707 SH
13 AMERICAN CENTY ETF TR AVTM 02507A606 $10.5M 0.40% 192,119 SH
14 DIMENSIONAL ETF TRUST DFAT 25434V609 $8.4M 0.32% 120,467 SH
15 VANGUARD INTL EQUITY INDEX F VNQI 922042676 $7.9M 0.30% 175,711 SH
16 STATE STR SPDR S&P 500 ETF T SPY 78462F103 $3.9M 0.15% 5,257 SH
17 VANGUARD INDEX FDS VUG 922908736 $3.9M 0.15% 45,077 SH
18 ISHARES TR EFV 464288877 $2.6M 0.10% 33,784 SH
19 SCHWAB STRATEGIC TR FNDF 808524755 $2.4M 0.09% 44,934 SH
20 EXXON MOBIL CORP XOM 30231G102 $2.2M 0.08% 16,185 SH
21 VANGUARD INDEX FDS VTV 922908744 $2.1M 0.08% 9,603 SH
22 ISHARES TR IWF 464287614 $1.8M 0.07% 14,824 SH
23 DIMENSIONAL ETF TRUST DFAC 25434V708 $1.7M 0.06% 38,485 SH
24 CHEVRON CORPORATION CVX 166764100 $1.6M 0.06% 9,865 SH
25 VANGUARD SCOTTSDALE FDS VGSH 92206C102 $1.5M 0.06% 25,923 SH
26 ISHARES TR AOA 464289859 $1.4M 0.06% 14,855 SH
27 SELECT SECTOR SPDR TR XLE 81369Y506 $1.4M 0.05% 26,388 SH
28 APPLE INC AAPL 037833100 $1.3M 0.05% 4,651 SH
29 WISDOMTREE TR EZM 97717W570 $1.3M 0.05% 17,434 SH
30 VANGUARD INDEX FDS VTI 922908769 $1.2M 0.05% 3,332 SH
31 STATE STR SPDR S&P MIDCAP 40 MDY 78467Y107 $1.2M 0.05% 1,691 SH
32 SPDR SERIES TRUST SPYM 78464A854 $1.1M 0.04% 12,988 SH
33 VANGUARD SPECIALIZED FUNDS VIG 921908844 $1.1M 0.04% 4,468 SH
34 SPDR SERIES TRUST SPYV 78464A508 $1.0M 0.04% 16,658 SH
35 VANGUARD WORLD FD VDE 92204A306 $989.0K 0.04% 6,588 SH
36 ISHARES TR SCZ 464288273 $985.6K 0.04% 11,981 SH
37 ARISTA NETWORKS INC ANET 040413205 $841.8K 0.03% 4,955 SH
38 ISHARES TR IVV 464287200 $818.3K 0.03% 1,093 SH
39 VANGUARD INDEX FDS VXF 922908652 $800.6K 0.03% 3,252 SH
40 SPDR INDEX SHS FDS GNR 78463X541 $793.3K 0.03% 11,785 SH
41 VANGUARD INDEX FDS VNQ 922908553 $790.1K 0.03% 8,194 SH
42 VANGUARD WHITEHALL FDS VYM 921946406 $785.9K 0.03% 4,973 SH
43 VANGUARD MUN BD FDS VTEB 922907746 $781.4K 0.03% 15,449 SH
44 MICROSOFT CORP MSFT 594918104 $766.3K 0.03% 2,054 SH
45 FIDELITY COVINGTON TRUST FMAT 316092881 $657.6K 0.03% 11,239 SH
46 ALPHABET INC GOOG 02079K107 $655.9K 0.02% 1,856 SH
47 VANGUARD WORLD FD VAW 92204A801 $642.7K 0.02% 2,809 SH
48 VANGUARD INDEX FDS VV 922908637 $612.8K 0.02% 1,782 SH
49 ALBERTSONS COMPANIES INC ACI 013091103 $577.3K 0.02% 42,670 SH
50 ISHARES TR IJH 464287507 $564.5K 0.02% 7,321 SH
Filing History
Period Filed AUM Holdings Accession
2026-06-30 2026-08-13 $2.63B 84 0001140361-26-032728
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