Fairmount Funds Management LLC

In its 13F for Q4 2024 (holdings as of December 31, 2024, filed February 14, 2025), Fairmount Funds Management LLC reported 17 stock positions worth $1.0 billion. Its top holding was Axsome Therapeutics (AXSM) at 12.4% of the portfolio, followed by Nuvalent Class A (NUVL, 10.3%) and Spyre Therapeutics (SYRE, 9.3%). Compared with Q3 2024, it opened 3 new positions, sold out of 1, added to 1 and reduced 3. The biggest buy was a new position in Scholar Rock (SRRK) and the biggest sale Axsome Therapeutics (AXSM, shares −38%).

Most Recent 13F
Q2 2026
Location
WEST CONSHOHOCKEN, PA
CIK
0001802528
Portfolio Value
$1.0B (Q4 2024)
SEC Filing
0001104659-25-014003 ↗ filed Feb 14, 2025

Holdings Value

0$500.0M$1.0B$1.5B$2.0B Q1 2024: $917.4M Q1 2024 Q2 2024: $885.1M Q2 2024 Q3 2024: $1.2B Q3 2024 Q4 2024: $1.0B $1.0B Q4 2024 Q1 2025: $644.6M Q1 2025 Q2 2025: $771.9M Q2 2025 Q3 2025: $1.1B Q3 2025 Q4 2025: $1.3B Q4 2025 Q1 2026: $1.4B Q1 2026 Q2 2026: $1.5B Q2 2026

Holdings 17 stocks · $1.0B

AXSM Axsome Therapeutics Inc. 12.36% 1,468,983 $124.3M Reduce -37.8%
NUVL Nuvalent Inc. Class A 10.25% 1,317,664 $103.1M Reduce -21.9%
SYRE Spyre Therapeutics Inc. 9.30% 4,018,101 $93.5M No change
APGE Apogee Therapeutics Inc. 9.23% 2,048,647 $92.8M No change
SRRK Scholar Rock Holding Corp. 8.43% 1,962,953 $84.8M New
ELVN Enliven Therapeutics Inc. 7.16% 3,202,798 $72.1M No change
VRDN Viridian Therapeutics Inc. 6.57% 3,445,813 $66.1M No change
ORKA Oruka Therapeutics Inc. 6.50% 3,371,922 $65.4M Add +5.0%
DNTH Dianthus Therapeutics Inc. 5.85% 2,700,691 $58.9M No change
COGT Cogent Biosciences Inc. 4.83% 6,225,641 $48.6M No change
KNSA Kiniksa Pharmaceuticals Inte 4.32% 2,194,341 $43.4M Reduce -31.5%
DAWN Day One Biopharmaceuticals I 3.91% 3,103,448 $39.3M No change
ATXS Astria Therapeutics Inc. 3.16% 3,554,129 $31.8M No change
ANAB Anaptysbio Inc. 2.39% 1,816,466 $24.1M New
BCAX Bicara Therapeutics Inc. 2.22% 1,284,169 $22.4M No change
IKT Inhibikase Therapeutics Inc. 1.98% 6,125,000 $19.9M New
ZBIO Zenas Biopharma Inc. 1.54% 1,892,806 $15.5M No change

Portfolio Sells Q3 2024 → Q4 2024

AXSM Axsome Therapeutics Inc. Reduce -37.8% 12.36% −4.84
NUVL Nuvalent Inc. Class A Reduce -21.9% 10.25% −3.74
KNSA Kiniksa Pharmaceuticals Inte Reduce -31.5% 4.32% −2.18
BCYC Bicycle Therapeutics PLC-ADR Sold out 0.00% −0.23

Portfolio Buys Q3 2024 → Q4 2024

SRRK Scholar Rock Holding Corp. New 8.43% +8.43
ANAB Anaptysbio Inc. New 2.39% +2.39
IKT Inhibikase Therapeutics Inc. New 1.98% +1.98
ORKA Oruka Therapeutics Inc. Add +5.0% 6.50% +0.12

All Filings

QuarterPositions13F Reported ValueTop Holdings
Q2 2026 12$1.5BORKA, DNTH, DMRA, COGT, JBIO
Q1 2026 12$1.4BDMRA, DNTH, COGT, SYRE, ORKA
Q4 2025 13$1.3BCOGT, APGE, SYRE, VRDN, ORKA
Q3 2025 17$1.1BDNTH, COGT, AXSM, APGE, ELVN
Q2 2025 17$771.9MAPGE, AXSM, ELVN, SRRK, SYRE
Q1 2025 15$644.6MAXSM, APGE, SYRE, ELVN, NUVL
Q4 2024 17$1.0BAXSM, NUVL, SYRE, APGE, SRRK
Q3 2024 15$1.2BAXSM, NUVL, APGE, SYRE, ELVN
Q2 2024 13$885.1MAXSM, NUVL, SYRE, APGE, ELVN
Q1 2024 15$917.4MAXSM, NUVL, APGE, DNTH, KNSA