Madison Avenue Partners, LP

CIK

1801265

Location

NEW YORK, NY

Portfolio Value

Mid $1,519,853,882

Diversification

Diversified

Filing Date

Global Rank

#1,378 / 7,976 ▲ 66

Top Industry

Education & Training Services 19.0%

3Y Alpha vs SPY

+50.3%

Period ended 9 months ago

Filed Nov 14, 2025 · 7mo

23 quarters · since Mar 2020

Clone Performance

Jun 2023–Jun 2026 · vs SPY

Hypothetical growth of cloning every reported 13F position and rebalancing on each filing, indexed to the same start.

Cloned portfolio

+402.5%

SPY

+76.5%

Annualised alpha

+50.4%

Max drawdown

−18.7%

Estimate. 13F holdings are quarter-lagged and long-only, so the clone rebalances about 45 days after each period end — when the filing becomes public — and excludes options and short positions. Past performance does not predict future results.

Portfolio Concentration

19 positions · as of Sep 30, 2025 · Δ vs Jun 30, 2025

Top Position

19.0%

+1.3 pts

Top 5

64.0%

+0.0 pts

Top 10

88.5%

−0.1 pts

HHI

1,062

Diversified+33

Portfolio Trend

23 quarters · across all stocks

Sector Breakdown

As of Sep 30, 2025

Sector	% Portfolio	Value	Positions
Healthcare	36.2%	$550,520,117	6
Consumer Defensive	25.5%	$387,568,849	3
Technology	15.2%	$231,414,856	1
Financial Services	10.9%	$165,100,619	2
Communication Services	9.0%	$137,127,303	3
Real Estate	2.2%	$32,813,871	2
Utilities	1.0%	$14,673,689	1
Consumer Cyclical	0.0%	$634,578	1

Last Quarter's Activity

Export CSV

Sep 30, 2025 vs Jun 30, 2025

Added To

Positions the filer increased

5 positions

Ticker	Company	Δ Shares	Shares	Value
AIV	Apartment Investment & Management Co	+2,143,488	3,617,314	$28,685,300
GMED	Globus Medical Inc	+836,015	2,548,163	$145,933,295
LKFT	Lakefront Biotherapeutics NV	+318,764	2,195,775	$76,061,646
KROS	Keros Therapeutics, Inc.	+16,753	2,708,218	$42,844,008
GHC	Graham Holdings Co	+558	245,829	$289,416,964
No positions match the current search.

Trimmed

Positions the filer reduced

6 positions

Ticker	Company	Δ Shares	Shares	Value
SNDK	Sandisk Corp	−1,508,588	2,062,521	$231,414,856
ALMS	Alumis Inc.	−1,424,492	417,777	$1,666,930
WLY	John Wiley & Sons, Inc.	−882,072	1,170,624	$47,375,153
MAGN	Magnera Corp	−511,724	2,832,281	$33,194,333
SOLV	Solventum Corp	−255,968	1,988,376	$145,151,448
NNI	Nelnet Inc	−112,679	31,535	$3,953,858
No positions match the current search.

New Positions

Positions the filer opened this quarter

3 positions

Ticker	Company	Shares	Value
BTI	British American Tobacco p.l.c.	1,223,767	$64,957,552
NWSA	News Corp	1,453,322	$44,631,518
CTRI	Centuri Holdings, Inc.	693,136	$14,673,689
No positions match the current search.

Sold Out

Positions the filer fully exited

7 positions

Ticker	Company	Shares	Value
INVX	Innovex International, Inc.	1,767,997	$27,616,113
MRP	Millrose Properties, Inc.	825,804	$23,543,672
CNNE	Cannae Holdings, Inc.	674,250	$14,058,112
ARVN	Arvinas, Inc.	500,000	$3,680,000
PLRX	Pliant Therapeutics, Inc.	2,230,012	$2,586,813
CMCO	Columbus Mckinnon Corp	45,961	$701,824
OVID	Ovid Therapeutics Inc.	1,311,362	$432,749
No positions match the current search.

Portfolio Positions

Compact Export CSV View 13F filing

19 positions · $1,519,853,882 total · as of Sep 30, 2025

All sectors Communication Services Consumer Cyclical Consumer Defensive Financial Services Healthcare Real Estate Technology Utilities

Ticker	Company	Type	Shares	Δ Shares	Value (USD)	% Δ Value	% of Portfolio
GHC	Graham Holdings Co Consumer Defensive	Added	245,829	+558	$289,416,964	+24.7%	19.04%
SNDK	Sandisk Corp Technology	Reduced	2,062,521	-1,508,588	$231,414,856	+42.9%	15.23%
MKL	Markel Group Inc. Financial Services	Held	84,310	0	$161,146,761	−4.3%	10.60%
GMED	Globus Medical Inc Healthcare	Added	2,548,163	+836,015	$145,933,295	+44.4%	9.60%
SOLV	Solventum Corp Healthcare	Reduced	1,988,376	-255,968	$145,151,448	−14.7%	9.55%
TBPH	Theravance Biopharma, Inc. Healthcare	Held	9,511,150	0	$138,862,790	+32.4%	9.14%
LKFT	Lakefront Biotherapeutics NV Healthcare	Added	2,195,775	+318,764	$76,061,646	+44.8%	5.00%
BTI	British American Tobacco p.l.c. Consumer Defensive	NEW	1,223,767	NEW	$64,957,552	NEW	4.27%
WLY	John Wiley & Sons, Inc. Communication Services	Reduced	1,170,624	-882,072	$47,375,153	−48.3%	3.12%
STGW	Stagwell Inc Communication Services	Held	8,014,322	0	$45,120,632	+25.1%	2.97%
NWSA	News Corp Communication Services	NEW	1,453,322	NEW	$44,631,518	NEW	2.94%
KROS	Keros Therapeutics, Inc. Healthcare	Added	2,708,218	+16,753	$42,844,008	+19.2%	2.82%
MAGN	Magnera Corp Consumer Defensive	Reduced	2,832,281	-511,724	$33,194,333	−17.8%	2.18%
AIV	Apartment Investment & Management Co Real Estate	Added	3,617,314	+2,143,488	$28,685,300	+125.0%	1.89%
CTRI	Centuri Holdings, Inc. Utilities	NEW	693,136	NEW	$14,673,689	NEW	0.97%
FSP	Franklin Street Properties Corp /Ma/ Real Estate	Held	2,580,357	0	$4,128,571	−2.4%	0.27%
NNI	Nelnet Inc Financial Services	Reduced	31,535	-112,679	$3,953,858	−77.4%	0.26%
ALMS	Alumis Inc. Healthcare	Reduced	417,777	-1,424,492	$1,666,930	−69.8%	0.11%
SN	SharkNinja, Inc. Consumer Cyclical	Held	6,152	0	$634,578	+4.2%	0.04%