ARDSLEY ADVISORY PARTNERS LP

Q4 2025 13F-HR Holdings

Location
Norwalk, CT
Holdings as of
12/31/2025
Date filed
2/17/2026
Form type
13F-HR
Num holdings
142
Total value ($000)
$911,130
Net value change ($000)
+102,465 (12.7%)
New positions
48
Sold out positions
34
Turnover %
46.1%
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)
LLY 42,987 NEW
TE CONNECTIVITY PLC 16,722 NEW
SEZL 15,551 NEW
LITE 15,494 110.7%
SMTC 11,749 205.5%
SLV 10,523 124.3%
TXN 10,409 NEW
GSM 9,837 NEW
SMIN 9,787 NEW
AVGO 9,121 45.7%
Top Reduces (Value $000, Stocks/ETFs)
ORCL -18,004 -75.5%
ARM -15,281 -100.0%
GLW -13,771 -100.0%
SIMO -12,610 -100.0%
EOSE -11,784 -64.9%
HUT -11,310 -40.6%
OKTA -9,720 -100.0%
AAOI -8,692 -90.9%
RIOT -8,564 -100.0%
PSTG -8,381 -100.0%
Instrument mix + QoQ Δ (ex-options)
Derivatives reported exposure ($000): 125,770 (13.8% 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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Issuer Name Ticker Sector Industry Class History Value ($000) % Shares Shares Δ Shares Δ% Value Δ ($000) Value Δ% Principal Option Type