Terminal · Institutions

Every 13F-reported equity position this quarter, with its quarter-over-quarter change — each row traces back to the SEC filing.

Flagstone Financial Management 13F Holdings -- Portfolio & Top Positions (2026-03-31)

Flagstone Financial Management (CIK 1968890) reported $402.9M across 71 reported positions in its SEC 13F filing for 2026-03-31. Largest positions: DFUS ($108.6M, 26.95%), IGIB ($43.1M, 10.70%), SPDW ($29.7M, 7.38%), SPSB ($27.4M, 6.81%), SPTI ($24.8M, 6.16%). Source: SEC Form 13F.

RankTickerCompanyValue% PortfolioSharesAction
1DFUSDIMENSIONAL ETF TRUST$108.6M26.95%1.5MAdded
2IGIBISHARES TR$43.1M10.70%809,747Added
3SPDWSPDR INDEX SHS FDS$29.7M7.38%651,133Trimmed
4SPSBSPDR SERIES TRUST$27.4M6.81%912,452Added
5SPTISPDR SERIES TRUST$24.8M6.16%866,477Added
6BNDXVANGUARD CHARLOTTE FDS$22.9M5.68%475,934Added
7AVUVAMERICAN CENTY ETF TR$21.4M5.31%193,507Added
8DFEMDIMENSIONAL ETF TRUST$16.9M4.18%487,786Trimmed
9AVUSAMERICAN CENTY ETF TR$15.0M3.72%134,767Added
10AVDVAMERICAN CENTY ETF TR$14.6M3.63%146,479Trimmed
11VNQVANGUARD INDEX FDS$10.4M2.58%117,361Added
12MUNIPIMCO ETF TR$8.7M2.15%166,076Added
13AVEMAMERICAN CENTY ETF TR$7.4M1.84%92,032Trimmed
14BRK/BBERKSHIRE HATHAWAY INC DEL$5.8M1.44%12,118Trimmed
15AVDEAMERICAN CENTY ETF TR$4.4M1.08%51,461Trimmed
16MUBISHARES TR$3.2M0.79%29,874Added
17AAPLAPPLE INC$3.0M0.73%11,658Added
18DFSUDIMENSIONAL ETF TRUST$2.2M0.55%53,949Added
19SUSBISHARES TR$2.2M0.54%86,206Trimmed
20SPTMSPDR SERIES TRUST$2.0M0.49%25,023Hold
21JPMJPMORGAN CHASE & CO$2.0M0.49%6,694Added
22MSFTMICROSOFT CORP$1.9M0.47%5,076Trimmed
23USBUS BANCORP$1.3M0.32%24,530Added
24DFSVDIMENSIONAL ETF TRUST$1.3M0.32%37,318Added
25AVREAMERICAN CENTY ETF TR$1.3M0.31%28,812Added

Source: SEC Form 13F filings · as of 2026-03-31