Stocks/Funds/CIK 1802528

Fairmount Funds Management LLC

long-term holderconcentrated
Quarterly 13F filings · Latest period 2026-03-31 · CIK 1802528
Assets
$1.38B
+114.8% YoY
Holdings
12
Lifetime alpha vs market
+18.69% annual
Average hold time
2.5 yr
median 2.3 yr

Quarterly history

Cum return +202% vs S&P +52% · α +150% lifetimeAUM $1.4B · peak $1.4BFlow $-252M (-19%)2019-122020-122021-122022-122023-122024-122025-122026-03
AUM ($B)fundS&P 500(gap = α)/ Flow in/out

Behavior signals (lifetime)

Dip response
+3.21%
adds when stocks drop
when a holding falls −10%+
Middle response
-8.03%
baseline attrition
Rally response
-0.03%
trims into rallies
when a holding rises +10%+

Top positions · 12

Ticker$ value% portYoYHold time
DMRAGalecto, Inc.$226M16.3%0.3 yr
DNTHDianthus Therapeutics, I$213M15.4%+362.6%2.8 yr
COGTCogent Biosciences, Inc.$212M15.3%+542.6%5.5 yr
SYRESpyre Therapeutics, Inc.$203M14.6%+212.5%2.8 yr
ORKAOruka Therapeutics, Inc.$182M13.1%+378.1%1.8 yr
VRDNViridian Therapeutics, I$77M5.5%+45.1%5.3 yr
ELVNEnliven Therapeutics, In$73M5.3%+99.2%3.3 yr
JBIOJade Biosciences, Inc.$64M4.6%1.0 yr
$50M3.6%1.0 yr
ZBIOZenas BioPharma, Inc.$46M3.3%+147.5%1.8 yr
$25M1.8%2.8 yr
$14M1.0%1.5 yr

Portfolio composition (YoY)

Industry mix
Biotechnology93.5%+11.2pp$1.29B
Unknown6.5%-11.2pp$90M
Country
US93.5%+11.2pp
Unknown6.5%-11.2pp
Top 5: 74.8% · Top 10: 97.1% · Top 25: 100.0%

Winners

TickerPrev $PnLYoY %
COGT$37M+0.20B542.6%
DNTH$49M+0.18B362.6%
SYRE$65M+0.14B212.5%
ORKA$35M+0.13B378.1%
ELVN$63M+0.06B99.2%

Losers

TickerPrev $PnLYoY %

Top buys this quarter · 3

DMRA Galecto, Inc.new+$226M
DNTH Dianthus Therapeutics, Inc.+$34M
ZBIO Zenas BioPharma, Inc.+$46M

Top sells this quarter · 5

$0M
exit$0M
COGT Cogent Biosciences, Inc.$135M
NUVL Nuvalent, Inc.exit$75M
ELVN Enliven Therapeutics, Inc.$57M

Quarterly history (TTM returns)

PeriodAUM# PosReturn (1yr)SPY (1yr)Alpha (1yr)Flow
2026-03-31$1.38B12+163.49%+17.59%+145.90%-0.25B
2025-12-31$1.31B13+84.39%+17.72%+66.67%-0.32B
2025-09-30$1.11B17+6.19%+17.52%-11.33%+0.03B
2025-06-30$772M17-9.05%+14.94%-23.99%+0.11B
2025-03-31$645M15-10.33%+8.30%-18.63%-0.23B
2024-12-31$1.01B17+16.03%+24.89%-8.86%-0.04B
2024-09-30$1.23B15+50.47%+36.04%+14.43%+0.17B
2024-06-30$885M13+13.52%+24.49%-10.97%-0.04B
2024-03-31$917M15+29.20%+29.62%-0.42%-0.15B
2023-12-31$946M16+7.60%+26.18%-18.58%+0.04B
2023-09-30$831M20+6.31%+21.57%-15.26%+0.19B
2023-06-30$709M17+22.10%+19.42%+2.68%+0.04B
2023-03-31$581M16-1.06%-7.82%+6.76%-0.01B
2022-12-31$630M16+8.21%+7.56%+0.65%+0.07B
2022-09-30$513M25+4.27%-4.93%+9.20%+0.09B
2022-06-30$411M26-6.64%-16.11%+9.47%+0.06B