Fairmount Funds Management LLC

CIK

1802528

Location

WEST CONSHOHOCKEN, PA

Portfolio Value

Mid $1,384,339,426

Diversification

Diversified

Filing Date

Global Rank

#1,473 / 8,605 ▲ 84 · as of Mar 2026

Top Industry

Biotechnology 100.0%

3Y Alpha vs SPY

+37.0%

Period ended 3 months ago

Filed May 15, 2026 · 55d

25 quarters · since Mar 2020

Clone Performance

Jul 2023–Jul 2026 · vs SPY

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

Cloned portfolio

+299.5%

SPY

+76.5%

Annualised alpha

+37.8%

Max drawdown

−44.8%

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

12 positions · as of Mar 31, 2026 · Δ vs Dec 31, 2025

Top Position

16.3%

−8.0 pts

Top 5

74.8%

+10.8 pts

Top 10

97.1%

+5.1 pts

HHI

1,231

Diversified+55

Portfolio Trend

25 quarters · across all stocks

Sector Breakdown

As of Mar 31, 2026

Sector	% Portfolio	Value	Positions
Healthcare	100.0%	$1,384,339,426	12

Last Quarter's Activity

Export CSV

Mar 31, 2026 vs Dec 31, 2025

Added To

Positions the filer increased

2 positions

Ticker	Company	Δ Shares	Shares	Value
DNTH	Dianthus Therapeutics, Inc. /DE/	+400,000	2,537,191	$212,921,068
ZBIO	Zenas BioPharma, Inc.	+150,000	2,359,025	$46,118,938
No positions match the current search.

Trimmed

Positions the filer reduced

3 positions

Ticker	Company	Δ Shares	Shares	Value
COGT	Cogent Biosciences, Inc.	−3,500,000	5,503,418	$211,826,558
ELVN	Enliven Therapeutics, Inc.	−1,855,800	1,855,644	$72,741,244
APGE	Apogee Therapeutics, Inc.	−1,750,000	298,647	$25,137,117
No positions match the current search.

New Positions

Positions the filer opened this quarter

1 positions

Ticker	Company	Shares	Value	Open
DMRA	Damora Therapeutics, Inc.	8,713,000	$225,666,700
No positions match the current search.

Sold Out

Positions the filer fully exited

2 positions

Ticker	Company	Shares	Value
NUVL	Nuvalent, Inc.	727,563	$73,185,562
KNSA	Kiniksa Pharmaceuticals International, plc	1,319,688	$54,437,130
No positions match the current search.

Portfolio Positions

Compact Export CSV View 13F filing

12 positions · $1,384,339,426 total · as of Mar 31, 2026

All sectors Healthcare

Ticker	Company	Type	Shares	Δ Shares	Value (USD)	% Δ Value	% of Portfolio
DMRA	Damora Therapeutics, Inc. Healthcare	NEW	8,713,000	NEW	$225,666,700	NEW	16.30%
DNTH	Dianthus Therapeutics, Inc. /DE/ Healthcare	Added	2,537,191	+400,000	$212,921,068	+141.8%	15.38%
COGT	Cogent Biosciences, Inc. Healthcare	Reduced	5,503,418	-3,500,000	$211,826,558	−33.8%	15.30%
SYRE	Spyre Therapeutics, Inc. Healthcare	Held	4,018,101	0	$202,673,014	+54.0%	14.64%
ORKA	Oruka Therapeutics, Inc. Healthcare	Held	3,705,262	0	$181,743,101	+61.8%	13.13%
VRDN	Viridian Therapeutics, Inc.DE Healthcare	Held	3,914,458	0	$76,566,798	−37.1%	5.53%
ELVN	Enliven Therapeutics, Inc. Healthcare	Reduced	1,855,644	-1,855,800	$72,741,244	+27.3%	5.25%
JBIO	Jade Biosciences, Inc. Healthcare	Held	4,553,494	0	$63,976,590	−8.9%	4.62%
CBIO	Crescent Biopharma, Inc. Healthcare	Held	2,747,866	0	$50,478,298	+54.9%	3.65%
ZBIO	Zenas BioPharma, Inc. Healthcare	Added	2,359,025	+150,000	$46,118,938	−42.5%	3.33%
APGE	Apogee Therapeutics, Inc. Healthcare	Reduced	298,647	-1,750,000	$25,137,117	−83.7%	1.82%
IKT	Inhibikase Therapeutics, Inc. Healthcare	Reduced	8,625,000	-12,461,101	$14,490,000	−66.5%	1.05%