Flagstone Financial Management

Investment Portfolio & 13F Holdings Analysis

About

CIK: 0001968890

Type: FundHoldings: 53Value: $310.4MLatest: 2025Q1

Flagstone Financial Management is an institutional investment manager that filed its latest Form 13F for 2025Q1, reporting 53 holdings worth $0.3 billion. Form 13F filings provide transparency into the equity holdings of institutional investment managers with over $100 million in assets under management. This page displays the most recent portfolio holdings, allowing investors to track position changes, new investments, and portfolio composition.

AI_NATIVE detailed information: This accession holds the following tickers:[
  "AVDE",
  null,
  null,
  "AVEM",
  null,
  null,
  null,
  null,
  "UNP",
  "MUB",
  null,
  "MA",
  "MSFT",
  null,
  "VGIT",
  null,
  null,
  null,
  "AAPL",
  "NVDA",
  null,
  "SPDW",
  null,
  null,
  "VNQ",
  null,
  null,
  null,
  null,
  "VIG",
  null,
  "IWR",
  "AMZN",
  null,
  null,
  "USB",
  "BNDX",
  "WMT",
  "WFC",
  null,
  "MKL",
  "BAC",
  "BRK-A",
  "BRK-B",
  "BOC",
  "DE",
  null,
  "IWM",
  "GOOG",
  "XOM",
  "LLY",
  "VTI",
  "JPM"
]

Filing Details

13F-HR • 2025-03-31

SEC FilingSEC DataHachi Filing

Report Date: 2025-03-31
Filing Date: 2025-04-21
Total Holdings: 53
Total Value: 310450294
Accession Number: 0001754960-25-000222
Form Type: 13F-HR
CIK: flagstone-financial-management
Manager Name: Flagstone-Financial-Management

Data Enrichment

57% identified

30 identified23 unidentified

Holdings

SEC FilingSEC DataHachi Filing

Manager:

53 positions • $310.5M total value

SEC FilingSEC DataHachi Filing

Manager:

Search and click to pin securities to the top

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25434V401

Shares:1.4M

Value:$83.9M

% of Portfolio:27.0% ($83.9M/$310.5M)

464288638

Shares:660.6K

Value:$34.7M

% of Portfolio:11.2% ($34.7M/$310.5M)

78463X889

SPDW|78463X889

Shares:677.3K

Value:$24.7M

% of Portfolio:7.9% ($24.7M/$310.5M)

78464A474

Shares:725.8K

Value:$21.8M

% of Portfolio:7.0% ($21.8M/$310.5M)

78464A672

Shares:710.5K

Value:$20.3M

% of Portfolio:6.5% ($20.3M/$310.5M)

92203J407

BNDX|92203J407

Shares:365.6K

Value:$17.8M

% of Portfolio:5.7% ($17.8M/$310.5M)

025072877

Shares:172.8K

Value:$15.1M

% of Portfolio:4.9% ($15.1M/$310.5M)

25434V732

Shares:521.6K

Value:$13.8M

% of Portfolio:4.4% ($13.8M/$310.5M)

025072802

Shares:166.8K

Value:$11.6M

% of Portfolio:3.7% ($11.6M/$310.5M)

025072885

Shares:123.9K

Value:$11.4M

% of Portfolio:3.7% ($11.4M/$310.5M)

922908553

VNQ|922908553

Shares:94.5K

Value:$8.6M

% of Portfolio:2.8% ($8.6M/$310.5M)

025072604

AVEM|025072604

Shares:108.8K

Value:$6.5M

% of Portfolio:2.1% ($6.5M/$310.5M)

BERKSHIRE HATHAWAY INC

BRK-B|084670702

Shares:11.2K

Value:$6.0M

% of Portfolio:1.9% ($6.0M/$310.5M)

72201R866

Shares:92.2K

Value:$4.8M

% of Portfolio:1.5% ($4.8M/$310.5M)

025072703

AVDE|025072703

Shares:55.8K

Value:$3.7M

% of Portfolio:1.2% ($3.7M/$310.5M)

Apple Inc.

AAPL|037833100

Shares:12.3K

Value:$2.7M

% of Portfolio:0.9% ($2.7M/$310.5M)

MICROSOFT CORP

MSFT|594918104

Shares:5.5K

Value:$2.0M

% of Portfolio:0.7% ($2.0M/$310.5M)

46435G243

Shares:79.5K

Value:$2.0M

% of Portfolio:0.6% ($2.0M/$310.5M)

BERKSHIRE HATHAWAY INC

BRK-A|084670108

Shares:2

Value:$1.6M

% of Portfolio:0.5% ($1.6M/$310.5M)

464288414

MUB|464288414

Shares:10.1K

Value:$1.1M

% of Portfolio:0.3% ($1.1M/$310.5M)

Instrument	Shares		Other Manager	Value	% of Portfolio
(cusip25434V401)✕	1.4M	QoQ +4.66% (-61.8K) YoY +9.60% (+121.5K)	All Managers (Combined)	$83.9M	27.0% ($83.9M/$310.5M)	QoQ -0.70% (-$592.2K) YoY +16.33% (+$11.8M)
(cusip464288638)✕	660.6K	QoQ +5.25% (+33.0K) YoY +83.21% (+300.1K)	All Managers (Combined)	$34.7M	11.2% ($34.7M/$310.5M)	QoQ +7.32% (+$2.4M) YoY +86.48% (+$16.1M)
(SPDWcusip78463X889)	677.3K	QoQ +2.17% (+14.4K) YoY +10.21% (+62.8K)	All Managers (Combined)	$24.7M	7.9% ($24.7M/$310.5M)	QoQ +9.00% (+$2.0M) YoY +11.96% (+$2.6M)
(cusip78464A474)✕	725.8K	QoQ +2.72% (+19.2K) YoY +6.87% (+46.7K)	All Managers (Combined)	$21.8M	7.0% ($21.8M/$310.5M)	QoQ +3.54% (+$748.3K) YoY +8.06% (+$1.6M)
(cusip78464A672)✕	710.5K	QoQ +5.02% (+34.0K) YoY +23.44% (+135.0K)	All Managers (Combined)	$20.3M	6.5% ($20.3M/$310.5M)	QoQ +7.65% (+$1.4M) YoY +25.20% (+$4.1M)
(BNDXcusip92203J407)	365.6K	QoQ +5.63% (+19.5K) YoY +22.47% (+67.1K)	All Managers (Combined)	$17.8M	5.7% ($17.8M/$310.5M)	QoQ +5.13% (+$872.6K) YoY +21.54% (+$3.2M)
(cusip025072877)✕	172.8K	QoQ +4.87% (-8.0K) YoY +14.59% (+22.0K)	All Managers (Combined)	$15.1M	4.9% ($15.1M/$310.5M)	QoQ -5.29% (-$841.6K) YoY +6.60% (+$932.6K)
(cusip25434V732)✕	521.6K	QoQ +3.53% (+17.8K) YoY +31.62% (+125.3K)	All Managers (Combined)	$13.8M	4.4% ($13.8M/$310.5M)	QoQ +4.59% (+$606.8K) YoY +36.63% (+$3.7M)
(cusip025072802)✕	166.8K	QoQ +1.96% (+3.2K) YoY +7.88% (+12.2K)	All Managers (Combined)	$11.6M	3.7% ($11.6M/$310.5M)	QoQ +9.26% (+$986.2K) YoY +14.24% (+$1.4M)
(cusip025072885)✕	123.9K	QoQ +2.62% (-3.2K) YoY +6.71% (+7.8K)	All Managers (Combined)	$11.4M	3.7% ($11.4M/$310.5M)	QoQ -2.19% (-$257.1K) YoY +10.14% (+$1.1M)
(VNQcusip922908553)	94.5K	QoQ +4.97% (+4.5K) YoY +17.42% (+14.0K)	All Managers (Combined)	$8.6M	2.8% ($8.6M/$310.5M)	QoQ +6.69% (+$536.9K) YoY +22.93% (+$1.6M)
(AVEMcusip025072604)	108.8K	QoQ -3.85% (-4.4K) YoY -20.74% (-28.5K)	All Managers (Combined)	$6.5M	2.1% ($6.5M/$310.5M)	QoQ -1.59% (-$106.1K) YoY -17.72% (-$1.4M)
BERKSHIRE HATHAWAY INC(BRK-Bcusip084670702)	11.2K	QoQ +1.19% (+133) YoY +7.48% (+782)	All Managers (Combined)	$6.0M	1.9% ($6.0M/$310.5M)	QoQ +18.90% (+$951.1K) YoY +36.12% (+$1.6M)
(cusip72201R866)✕	92.2K	QoQ +7.51% (+6.4K) YoY +79.32% (+40.8K)	All Managers (Combined)	$4.8M	1.5% ($4.8M/$310.5M)	QoQ +7.14% (+$316.9K) YoY +76.17% (+$2.1M)
(AVDEcusip025072703)	55.8K	QoQ +1.27% (+702) YoY +3.29% (+1.8K)	All Managers (Combined)	$3.7M	1.2% ($3.7M/$310.5M)	QoQ +9.36% (+$316.4K) YoY +7.39% (+$254.4K)
Apple Inc.(AAPLcusip037833100)	12.3K	QoQ -0.40% (-50) YoY +98.66% (+6.1K)	All Managers (Combined)	$2.7M	0.9% ($2.7M/$310.5M)	QoQ -11.65% (-$361.2K) YoY +157.35% (+$1.7M)
MICROSOFT CORP(MSFTcusip594918104)	5.5K	QoQ +0.01% (-1) YoY +15.44% (+730)	All Managers (Combined)	$2.0M	0.7% ($2.0M/$310.5M)	QoQ -10.92% (-$251.2K) YoY +2.99% (+$59.6K)
(cusip46435G243)✕	79.5K	QoQ -7.39% (-6.3K) YoY -0.21% (-172)	All Managers (Combined)	$2.0M	0.6% ($2.0M/$310.5M)	QoQ -6.30% (-$133.8K) YoY +1.86% (-$36.3K)
BERKSHIRE HATHAWAY INC(BRK-Acusip084670108)	2	QoQ 0.00% (+0) YoY 0.00% (+0)	All Managers (Combined)	$1.6M	0.5% ($1.6M/$310.5M)	QoQ +17.25% (+$235.0K) YoY +25.84% (+$328.0K)
(MUBcusip464288414)	10.1K	QoQ +144.97% (+6.0K) YoY +143.61% (+6.0K)	All Managers (Combined)	$1.1M	0.3% ($1.1M/$310.5M)	QoQ +142.41% (+$625.2K) YoY +138.71% (+$618.4K)