ARDSLEY ADVISORY PARTNERS LP

Q3 2025 13F-HR Holdings

Location
Norwalk, CT
Holdings as of
9/30/2025
Date filed
11/14/2025
Form type
13F-HR
Num holdings
130
Total value ($000)
$808,665
Net value change ($000)
+48,042 (6.3%)
New positions
43
Sold out positions
52
Turnover %
62.7%
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)
FSLR 25,965 1045.7%
RUN 25,128 990.9%
EOSE 18,144 NEW
HUT 18,083 185.2%
LITE 13,993 NEW
SIMO 12,610 NEW
AGI 11,330 NEW
SNDK 11,220 NEW
ARGX 11,063 NEW
TER 10,682 747.0%
Top Reduces (Value $000, Stocks/ETFs)
FLR -35,132 -86.1%
CLS -21,075 -100.0%
ANET -17,350 -77.8%
HUM -12,224 -100.0%
AFRM -12,070 -89.2%
NOW -11,823 -100.0%
NFLX -11,383 -100.0%
INDV -10,687 -100.0%
TE CONNECTIVITY PLC -10,036 -100.0%
DAVE -9,394 -100.0%
Instrument mix + QoQ Δ (ex-options)
Derivatives reported exposure ($000): 156,542 (19.4% of total reported value)
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