GAGNON SECURITIES LLC

Q1 2026 13F-HR Holdings

Location
New York, NY
Holdings as of
3/31/2026
Date filed
4/21/2026
Form type
13F-HR
Num holdings
85
Total value ($000)
$433,208
Net value change ($000)
-57,879 (-11.8%)
New positions
6
Sold out positions
7
Turnover %
15.9%
Sector allocation + QoQ delta (equities-only)
Prev filing: 2/13/2026 Next filing: — SEC filing

Snapshot: Change Analysis

Compared to Q4 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)
SGOV 9,331 NEW
HNGE 4,791 NEW
ENSG 4,752 15.1%
GNRC 4,324 41.9%
EQIX 3,482 26.5%
ASPN 3,161 98.6%
EPD 2,544 15.0%
NVGS 2,212 14.8%
QDEL 2,081 45.8%
OSUR 1,344 35.4%
Top Reduces (Value $000, Stocks/ETFs)
AL -31,920 -100.0%
EXAS -17,003 -100.0%
WGS -13,507 -41.0%
BL -4,480 -29.0%
ISRG -3,433 -19.1%
NVDA -3,189 -83.4%
FIVN -3,109 -24.8%
AMRC -2,973 -12.2%
CDNA -2,853 -8.5%
TPR -2,740 -100.0%
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