MASECO LLP — 13F Holdings & Portfolio
CIK 2074052 · latest 13F-HR filed 2026-08-05
MASECO LLP manages $3.56B in 13F-reported U.S. long-equity assets across 291 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are DFUS (16.97%), VGIT (11.06%), AVUS (8.56%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 22 new positions, exited 122, added to 165, and trimmed 41.
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.
11 KEELEY STREET
LONDON WC2B 4BA
$3.56B
Long-equity book
291
Distinct positions
2026-06-30
Filed 2026-08-05
+22 / −122 / ↑165 / ↓41
vs 2026-03-31
| Name | Title / Status | Ownership | Type |
|---|
Top Adds (vs prior quarter)
- DIMENSIONAL ETF TRUST$72.9M +13.7%
- AMERICAN CENTY ETF TR$44.7M +17.2%
- DIMENSIONAL ETF TRUST$22.8M +27.8%
- DIMENSIONAL ETF TRUST$22.7M +27.3%
- AMERICAN CENTY ETF TR$20.1M +21.0%
Top Trims
- ISHARES TR-$4.4M -12.1%
- ISHARES TR-$909.4K -23.4%
- META PLATFORMS INC-$547.6K -78.0%
- VANECK ETF TRUST-$254.2K -11.5%
- WALMART INC-$220.5K -90.3%
New Positions
- DEUTSCHE BK AG$1.1M
- INVESCO QQQ TR$983.1K
- INVESCO EXCHANGE TRADED FD T$837.5K
- ISHARES TR$432.9K
- WISDOMTREE TR$289.7K
Exited Positions
- HONEYWELL INTL INC$57.8K
- SELECT SECTOR SPDR TR$36.5K
- SELECT SECTOR SPDR TR$35.9K
- BANK NOVA SCOTIA B C$30.2K
- LAM RESEARCH CORP$27.8K
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 | DIMENSIONAL ETF TRUST | DFUS | 25434V401 | $603.9M | 16.97% | 7,371,581 | SH |
| 2 | VANGUARD SCOTTSDALE FDS | VGIT | 92206C706 | $393.4M | 11.06% | 6,671,234 | SH |
| 3 | AMERICAN CENTY ETF TR | AVUS | 025072885 | $304.6M | 8.56% | 2,377,661 | SH |
| 4 | DIMENSIONAL ETF TRUST | DFGP | 25434V583 | $223.7M | 6.29% | 4,107,724 | SH |
| 5 | AMERICAN CENTY ETF TR | AVDE | 025072703 | $179.2M | 5.04% | 2,008,367 | SH |
| 6 | DIMENSIONAL ETF TRUST | DFIC | 25434V799 | $126.2M | 3.55% | 3,391,403 | SH |
| 7 | AMERICAN CENTY ETF TR | AVSU | 025072281 | $115.6M | 3.25% | 1,305,465 | SH |
| 8 | AMERICAN CENTY ETF TR | AVEM | 025072604 | $112.1M | 3.15% | 1,161,088 | SH |
| 9 | DIMENSIONAL ETF TRUST | DFUV | 25434V724 | $110.0M | 3.09% | 1,999,281 | SH |
| 10 | DIMENSIONAL ETF TRUST | DFAU | 25434V104 | $105.6M | 2.97% | 2,043,736 | SH |
| 11 | DIMENSIONAL ETF TRUST | DFAC | 25434V708 | $104.9M | 2.95% | 2,365,428 | SH |
| 12 | DIMENSIONAL ETF TRUST | DFSB | 25434V674 | $100.1M | 2.81% | 1,922,639 | SH |
| 13 | DIMENSIONAL ETF TRUST | DFAI | 25434V203 | $98.1M | 2.76% | 2,378,111 | SH |
| 14 | DIMENSIONAL ETF TRUST | DFSU | 25434V716 | $96.5M | 2.71% | 2,068,712 | SH |
| 15 | AMERICAN CENTY ETF TR | AVSF | 025072687 | $95.0M | 2.67% | 2,039,533 | SH |
| 16 | DIMENSIONAL ETF TRUST | DFEM | 25434V732 | $93.8M | 2.64% | 2,307,093 | SH |
| 17 | ISHARES TR | STIP | 46429B747 | $81.8M | 2.30% | 800,732 | SH |
| 18 | DIMENSIONAL ETF TRUST | DFAE | 25434V302 | $58.0M | 1.63% | 1,441,537 | SH |
| 19 | AMERICAN CENTY ETF TR | AVSD | 025072299 | $56.9M | 1.60% | 711,707 | SH |
| 20 | DIMENSIONAL ETF TRUST | DFIV | 25434V807 | $54.2M | 1.52% | 1,003,214 | SH |
| 21 | DIMENSIONAL ETF TRUST | DFGR | 25434V658 | $46.6M | 1.31% | 1,609,286 | SH |
| 22 | DIMENSIONAL ETF TRUST | DFSI | 25434V690 | $45.7M | 1.28% | 1,012,064 | SH |
| 23 | DIMENSIONAL ETF TRUST | DFSD | 25434V864 | $36.9M | 1.04% | 772,357 | SH |
| 24 | AMERICAN CENTY ETF TR | AVSE | 025072315 | $35.7M | 1.00% | 436,282 | SH |
| 25 | ISHARES TR | SHV | 464288679 | $32.3M | 0.91% | 292,859 | SH |
| 26 | DIMENSIONAL ETF TRUST | DFSE | 25434V682 | $29.0M | 0.82% | 594,139 | SH |
| 27 | VANGUARD SCOTTSDALE FDS | VGSH | 92206C102 | $26.5M | 0.75% | 455,561 | SH |
| 28 | VANGUARD INDEX FDS | VOO | 922908363 | $25.8M | 0.72% | 37,569 | SH |
| 29 | DIMENSIONAL ETF TRUST | DFAS | 25434V500 | $23.3M | 0.65% | 282,786 | SH |
| 30 | DIMENSIONAL ETF TRUST | DFAW | 25434V617 | $11.9M | 0.33% | 143,211 | SH |
| 31 | ISHARES TR | IVV | 464287200 | $11.3M | 0.32% | 15,027 | SH |
| 32 | STATE STR SPDR S&P 500 ETF T | SPY | 78462F103 | $8.2M | 0.23% | 10,943 | SH |
| 33 | VANGUARD INDEX FDS | VTI | 922908769 | $6.1M | 0.17% | 16,565 | SH |
| 34 | MANAGER DIRECTED PORTFOLIOS | VGSR | 56170L695 | $6.0M | 0.17% | 527,020 | SH |
| 35 | ALPHABET INC | GOOG | 02079K107 | $5.6M | 0.16% | 15,711 | SH |
| 36 | JPMORGAN CHASE & CO | JPM | 46625H100 | $4.4M | 0.12% | 13,578 | SH |
| 37 | VANGUARD WHITEHALL FDS | VYM | 921946406 | $4.4M | 0.12% | 27,979 | SH |
| 38 | ISHARES INC | LEMB | 464286517 | $3.8M | 0.11% | 90,021 | SH |
| 39 | ISHARES TR | SGOV | 46436E718 | $3.0M | 0.08% | 29,574 | SH |
| 40 | ISHARES TR | IGSB | 464288646 | $2.9M | 0.08% | 56,275 | SH |
| 41 | VANGUARD TAX-MANAGED FDS | VEA | 921943858 | $2.6M | 0.07% | 36,882 | SH |
| 42 | ISHARES TR | USHY | 46435U853 | $2.5M | 0.07% | 68,740 | SH |
| 43 | ISHARES TR | IEFA | 46432F842 | $2.5M | 0.07% | 25,570 | SH |
| 44 | VANGUARD INTL EQUITY INDEX F | VWO | 922042858 | $2.5M | 0.07% | 41,318 | SH |
| 45 | SCHWAB STRATEGIC TR | FNDX | 808524771 | $2.4M | 0.07% | 78,421 | SH |
| 46 | VANGUARD WHITEHALL FDS | VYMI | 921946794 | $2.4M | 0.07% | 24,080 | SH |
| 47 | APPLE INC | AAPL | 037833100 | $2.1M | 0.06% | 7,306 | SH |
| 48 | SPDR SERIES TRUST | SPYX | 78468R796 | $2.1M | 0.06% | 34,150 | SH |
| 49 | VANECK ETF TRUST | GDX | 92189F106 | $2.0M | 0.05% | 25,909 | SH |
| 50 | ISHARES TR | ACWI | 464288257 | $1.9M | 0.05% | 12,330 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-06-30 | 2026-08-05 | $3.56B | 291 | 0002074052-26-000006 |
| 2026-03-31 | 2026-04-21 | $3.19B | 391 | 0002074052-26-000004 |
| 2025-12-31 | 2026-01-22 | $2.30B | 543 | 0002074052-26-000001 |