Fairmount Funds Management LLC

Q4 2025 13F-HR Holdings

Location
West Conshohocken, PA
Holdings as of
12/31/2025
Date filed
2/17/2026
Form type
13F-HR
Num holdings
13
Total value ($000)
$1,313,784
Net value change ($000)
+202,361 (18.2%)
New positions
0
Sold out positions
4
Turnover %
19.3%
Sector allocation + QoQ delta (equities-only)
Prev filing: 11/14/2025 Next filing: — SEC filing

Snapshot: Change Analysis

Compared to Q3 2025
Methodology: sector metrics are equities-only; instrument mix chart is ex-options; options exposure is shown separately. Why this matters.
Top Adds (Value $000, Stocks/ETFs)
COGT 190,512 147.4%
APGE 73,239 90.0%
SYRE 64,290 95.5%
VRDN 47,153 63.2%
JBIO 42,468 152.8%
ORKA 41,054 57.6%
ZBIO 38,190 90.9%
CBIO 16,088 97.5%
NUVL 10,266 16.3%
IKT 7,758 78.2%
Top Reduces (Value $000, Stocks/ETFs)
AXSM -99,003 -100.0%
SRRK -67,927 -100.0%
ABVX -60,571 -100.0%
DNTH -42,064 -32.3%
Astria Therapeutics, Inc. -25,874 -100.0%
ELVN -18,817 -24.8%
KNSA -14,402 -20.9%
Instrument mix + QoQ Δ (ex-options)
How this table is calculated: SEC VALUE ($000) is used as reported. For derivatives (PUT/CALL/WARRANT/RIGHT), SEC value represents reported underlying exposure, not premium cash paid/received. Column % is bucket-based: non-options share is calculated inside non-option total, options share is calculated inside options total. Details.
Filter:
Instrument:
Issuer Name Ticker Sector Industry Class History Value ($000) % Shares Shares Δ Shares Δ% Value Δ ($000) Value Δ% Principal Option Type