Flagstone Financial Management — 13F Holdings & Portfolio
CIK 1968890 · latest 13F-HR filed 2026-04-27
Flagstone Financial Management manages $402.9M in 13F-reported U.S. long-equity assets across 71 reported positions as of its 2026-03-31 13F-HR filing. Its largest disclosed positions are DFUS (26.95%), IGIB (10.70%), SPDW (7.38%). Quarter over quarter (versus its 2025-12-31 filing) the fund opened 6 new positions, exited 1, added to 17, and trimmed 17.
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.
$402.9M
Long-equity book
71
Distinct positions
2026-03-31
Filed 2026-04-27
+6 / −1 / ↑17 / ↓17
vs 2025-12-31
| Name | Title / Status | Ownership | Type |
|---|
Top Adds (vs prior quarter)
- PIMCO ETF TR$2.6M +42.9%
- ISHARES TR$2.1M +5.2%
- AMERICAN CENTY ETF TR$1.9M +9.5%
- SPDR SERIES TRUST$1.7M +6.6%
- VANGUARD CHARLOTTE FDS$1.7M +8.0%
Top Trims
- MICROSOFT CORP-$614.1K -24.6%
- BERKSHIRE HATHAWAY INC DEL-$319.9K -5.2%
- WELLS FARGO & CO-$249.2K -22.6%
- APPLE INC-$190.3K -6.0%
- BANK AMERICA CORP-$118.2K -33.4%
New Positions
- VERIZON COMMUNICATIONS INC$331.7K
- CISCO SYS INC$275.5K
- VALERO ENERGY CORP$247.1K
- GILEAD SCIENCES INC$242.1K
- NEXTERA ENERGY INC$216.7K
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 | $108.6M | 26.95% | 1,531,004 | SH |
| 2 | ISHARES TR | IGIB | 464288638 | $43.1M | 10.70% | 809,747 | SH |
| 3 | SPDR INDEX SHS FDS | SPDW | 78463X889 | $29.7M | 7.38% | 651,133 | SH |
| 4 | SPDR SERIES TRUST | SPSB | 78464A474 | $27.4M | 6.81% | 912,452 | SH |
| 5 | SPDR SERIES TRUST | SPTI | 78464A672 | $24.8M | 6.16% | 866,477 | SH |
| 6 | VANGUARD CHARLOTTE FDS | BNDX | 92203J407 | $22.9M | 5.68% | 475,934 | SH |
| 7 | AMERICAN CENTY ETF TR | AVUV | 025072877 | $21.4M | 5.31% | 193,507 | SH |
| 8 | DIMENSIONAL ETF TRUST | DFEM | 25434V732 | $16.9M | 4.18% | 487,786 | SH |
| 9 | AMERICAN CENTY ETF TR | AVUS | 025072885 | $15.0M | 3.72% | 134,767 | SH |
| 10 | AMERICAN CENTY ETF TR | AVDV | 025072802 | $14.6M | 3.63% | 146,479 | SH |
| 11 | VANGUARD INDEX FDS | VNQ | 922908553 | $10.4M | 2.58% | 117,361 | SH |
| 12 | PIMCO ETF TR | MUNI | 72201R866 | $8.7M | 2.15% | 166,076 | SH |
| 13 | AMERICAN CENTY ETF TR | AVEM | 025072604 | $7.4M | 1.84% | 92,032 | SH |
| 14 | BERKSHIRE HATHAWAY INC DEL | BRK.B | 084670702 | $5.8M | 1.44% | 12,118 | SH |
| 15 | AMERICAN CENTY ETF TR | AVDE | 025072703 | $4.4M | 1.08% | 51,461 | SH |
| 16 | ISHARES TR | MUB | 464288414 | $3.2M | 0.79% | 29,874 | SH |
| 17 | APPLE INC | AAPL | 037833100 | $3.0M | 0.73% | 11,658 | SH |
| 18 | DIMENSIONAL ETF TRUST | DFSU | 25434V716 | $2.2M | 0.55% | 53,949 | SH |
| 19 | ISHARES TR | SUSB | 46435G243 | $2.2M | 0.54% | 86,206 | SH |
| 20 | SPDR SERIES TRUST | SPTM | 78464A805 | $2.0M | 0.49% | 25,023 | SH |
| 21 | JPMORGAN CHASE & CO | JPM | 46625H100 | $2.0M | 0.49% | 6,694 | SH |
| 22 | MICROSOFT CORP | MSFT | 594918104 | $1.9M | 0.47% | 5,076 | SH |
| 23 | DIMENSIONAL ETF TRUST | DFSV | 25434V815 | $1.3M | 0.32% | 37,318 | SH |
| 24 | US BANCORP | USB | 902973304 | $1.3M | 0.32% | 24,530 | SH |
| 25 | AMERICAN CENTY ETF TR | AVRE | 025072356 | $1.3M | 0.31% | 28,812 | SH |
| 26 | EXXON MOBIL CORP | XOM | 30231G102 | $1.2M | 0.29% | 6,820 | SH |
| 27 | DIMENSIONAL ETF TRUST | DFAE | 25434V302 | $1.1M | 0.26% | 31,426 | SH |
| 28 | DIMENSIONAL ETF TRUST | DFSB | 25434V674 | $886.3K | 0.22% | 17,130 | SH |
| 29 | NVIDIA CORPORATION | NVDA | 67066G104 | $878.5K | 0.22% | 5,037 | SH |
| 30 | WELLS FARGO & CO | WFC | 949746101 | $854.9K | 0.21% | 10,738 | SH |
| 31 | ALPHABET INC | GOOG | 02079K107 | $846.7K | 0.21% | 2,952 | SH |
| 32 | DIMENSIONAL ETF TRUST | DFSI | 25434V690 | $811.2K | 0.20% | 19,131 | SH |
| 33 | ISHARES TR | IWR | 464287499 | $760.6K | 0.19% | 7,823 | SH |
| 34 | BERKSHIRE HATHAWAY INC DEL | BRK.A | 084670108 | $718.1K | 0.18% | 1 | SH |
| 35 | VANGUARD SPECIALIZED FUNDS | VIG | 921908844 | $686.0K | 0.17% | 3,190 | SH |
| 36 | VANGUARD INDEX FDS | VTI | 922908769 | $669.7K | 0.17% | 2,088 | SH |
| 37 | VANGUARD SCOTTSDALE FDS | VGIT | 92206C706 | $631.9K | 0.16% | 10,612 | SH |
| 38 | DEERE & CO | DE | 244199105 | $581.4K | 0.14% | 1,032 | SH |
| 39 | MASTERCARD INCORPORATED | MA | 57636Q104 | $569.6K | 0.14% | 1,140 | SH |
| 40 | PEPSICO INC | PEP | 713448108 | $528.0K | 0.13% | 3,400 | SH |
| 41 | DIMENSIONAL ETF TRUST | DFAR | 25434V823 | $500.6K | 0.12% | 21,166 | SH |
| 42 | DIMENSIONAL ETF TRUST | DFSE | 25434V682 | $496.2K | 0.12% | 11,712 | SH |
| 43 | MARKEL GROUP INC | MKL | 570535104 | $486.2K | 0.12% | 254 | SH |
| 44 | ORACLE CORP | ORCL | 68389X105 | $482.2K | 0.12% | 3,278 | SH |
| 45 | JOHNSON & JOHNSON | JNJ | 478160104 | $473.2K | 0.12% | 1,936 | SH |
| 46 | AMAZON COM INC | AMZN | 023135106 | $447.8K | 0.11% | 2,150 | SH |
| 47 | ISHARES TR | IWM | 464287655 | $436.0K | 0.11% | 1,758 | SH |
| 48 | VANGUARD TAX-MANAGED FDS | VEA | 921943858 | $422.0K | 0.10% | 6,586 | SH |
| 49 | SPDR SERIES TRUST | SPIB | 78464A375 | $386.8K | 0.10% | 11,531 | SH |
| 50 | DIMENSIONAL ETF TRUST | DFIV | 25434V807 | $386.4K | 0.10% | 7,320 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-03-31 | 2026-04-27 | $402.9M | 71 | 0001754960-26-000338 |
| 2025-12-31 | 2026-02-09 | $389.9M | 66 | 0001754960-26-000161 |