account_balance

Investment manager · 13F filer · SEC CIK 1968890

Flagstone Financial Management

Reported value$455Mas of Sep 30, 2026
Positions75 1 new, 3 sold out
Top 10 weight80.8%DFUS alone is 29%
FiledNov 536 days after quarter end

Portfolio · as of Sep 30, 2026

Where the money is

New or addedTrimmedHeld

Boxes show the top 12 stocks, sized against each other. The bar above shows how much of the fund they are. 13F only covers US-listed stocks, so foreign holdings and short positions are missing.

Show the top 12 as a list
DFUS Dimensional ETF Trust 28.9% Added +2%
IGIB iShares Tr 9.9% Added +6%
SPDW SPDR Index SHS FDS 7.4% Held
SPSB SPDR Series Trust 6.5% Added +7%
SPTI SPDR Series Trust 5.8% Added +6%
BNDX Vanguard Charlotte FDS 5.4% Added +6%
AVUV American Centy ETF Tr 5.1% Held
DFEM Dimensional ETF Trust 4.3% Added +2%
AVUS American Centy ETF Tr 3.8% Held
AVDV American Centy ETF Tr 3.6% Held
VNQ Vanguard Index FDS 2.5% Added +5%
MUNI Pimco ETF Tr 1.9% Trimmed −8%

What changed

Biggest moves since Jun 30, 2026

Filed Nov 5, 2026, compared with the Jul 21, 2026 filing
add_circleNew
arrow_upwardAdded
  • MUB +51%
  • SPSB +7%
  • IGIB +6%
  • SPTI +6%
arrow_downwardTrimmed
  • MUNI −8%
  • SPTM −4%
  • MSFT −3%
remove_circleSold out

Where this data comes from. Insider trades, fund holdings, activist stakes and company results come from public SEC EDGAR filings (Forms 4, 13F, 13D/13G, 10-Q and 8-K). Congress trades come from the STOCK Act reports members file with the House Clerk and the Senate. Daily closing prices come from post-no-preference/stocks on DoltHub, a community-run database shared under CC BY-SA 4.0; the prices we show stay under that license. They are each day's close, not live or official exchange prices.

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