Fairmount Funds Management LLC

Q3 2025 13F-HR Holdings

Location
West Conshohocken, PA
Holdings as of
9/30/2025
Date filed
11/14/2025
Form type
13F-HR
Num holdings
17
Total value ($000)
$1,111,423
Net value change ($000)
+339,521 (44.0%)
New positions
1
Sold out positions
1
Turnover %
6.2%
Sector allocation + QoQ delta (equities-only)
Prev filing: 8/14/2025 Next filing: 2/17/2026 SEC filing

Snapshot: Change Analysis

Compared to Q2 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 84,589 189.2%
DNTH 79,703 158.0%
ABVX 60,571 NEW
ORKA 33,453 88.5%
VRDN 26,295 54.4%
ZBIO 23,679 129.1%
KNSA 19,785 40.3%
AXSM 13,907 16.3%
NUVL 7,407 13.3%
SYRE 7,192 12.0%
Top Reduces (Value $000, Stocks/ETFs)
CTMX -8,845 -100.0%
APGE -7,580 -8.5%
CBIO -5,898 -26.3%
JBIO -4,379 -13.6%
IKT -2,021 -16.9%
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.
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Instrument:
Issuer Name Ticker Sector Industry Class History Value ($000) % Shares Shares Δ Shares Δ% Value Δ ($000) Value Δ% Principal Option Type