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Hedge Funds Similar to GAGNON SECURITIES

13F Portfolio OverlapQ1 2026GAGNON SECURITIES portfolio →
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Most similar hedge funds by 13F overlap

GAGNON SECURITIES LLC is an institutional investor managing $433M across 85 U.S. equity positions as of Q1 2026. Based on the overlap of conviction holdings in their latest 13F filings, the hedge funds with portfolios most similar to GAGNON SECURITIES are Gagnon Advisors,, PARAGON ASSOCIATES & PARAGON ASSOCIATES II JOINT VENTURE, Tensile, with shared positions in $CDNA, $AMRC, $WGS, $EPD, $NVGS, $EQIX. The full ranking of 25 similar funds is below.

#1Gagnon Advisors, LLCActive
Highly similar · 20 shared positions
$CDNA$AMRC$WGS$EPD$NVGS$EQIX
$136M
22 positions
#2PARAGON ASSOCIATES & PARAGON ASSOCIATES II JOINT VENTUREActive
Notable overlap · 3 shared positions
$CDNA$NVGS$PROF
$74M
14 positions
#3Tensile Capital Management LPActive
Some overlap · 3 shared positions
$EQIX$BL$VERX
$698M
25 positions
#4WESTERLY CAPITAL MANAGEMENT, LLCPassive
Some overlap · 3 shared positions
$FRSH$BL$AMPL
$368M
37 positions
#5Opti Capital Management, LPActive
Some overlap · 4 shared positions
$BL$FIVN$VERX$MCHP
$1.4B
36 positions
#6DISCIPLINED GROWTH INVESTORS INC /MNActive
Some overlap · 5 shared positions
$GNRC$PRLB$ISRG$DV$MCHP
$4.9B
61 positions
#7Zweig-DiMenna Associates LLCPassive
Some overlap · 3 shared positions
$WGS$CDNA$MCHP
$722M
61 positions
#8Prosight Management, LPActive
Some overlap · 3 shared positions
$WGS$ICUI$ISRG
$610M
46 positions
#9Laurus Global Equity Management Inc.Active
Some overlap · 3 shared positions
$GNRC$ENSG$DV
$102M
45 positions
#10COATUE MANAGEMENT LLCActive
Some overlap · 3 shared positions
$EQIX$ISRG$GNRC
$29.1B
62 positions
#11ASHFORD CAPITAL MANAGEMENT INCPassive
Some overlap · 3 shared positions
$EQIX$WGS$EPD
$809M
99 positions
#12S Squared Technology, LLCActive
Some overlap · 4 shared positions
$FIVN$PRLB$KLTR$AMPL
$264M
35 positions
#13PARADIGM CAPITAL MANAGEMENT INC/NYActive
Some overlap · 3 shared positions
$ENSG$PNTG$QDEL
$2.6B
112 positions
#14Potrero Capital Research LLCActive
Some overlap · 3 shared positions
$BL$HNGE$FRSH
$163M
31 positions
#15KIRR MARBACH & CO LLC /IN/Active
Some overlap · 3 shared positions
$GNRC$KMX$ICUI
$549M
57 positions
#16Wellesley Asset ManagementActive
Some overlap · 3 shared positions
$BL$PCRX$MCHP
$953M
54 positions
#17BRAIDWELL LPPassive
Some overlap · 3 shared positions
$CDNA$ISRG$HNGE
$3.0B
88 positions
#18ArrowMark Colorado Holdings LLCPassive
Some overlap · 3 shared positions
$CARG$HNGE$GNRC
$3.8B
293 positions
#19RTW INVESTMENTS, LPActive
Some overlap · 3 shared positions
$CELC$ISRG$HNGE
$10.0B
88 positions
#20Scott & Selber, Inc.Active
Slight overlap · 3 shared positions
$GNRC$ISRG$CMG
$387M
91 positions
#21Susquehanna Portfolio Strategies, LLCPassive
Slight overlap · 3 shared positions
$EQIX$CMG$ISRG
$6.7B
959 positions
#22Holocene Advisors, LPPassive
Slight overlap · 3 shared positions
$ISRG$EQIX$MCHP
$41.5B
797 positions
#23Optimus Prime Fund Management Co., Ltd.Smart money
Slight overlap · 3 shared positions
$AMPL$FRSH$FIVN
$1.0B
27 positions
#24Balance Wealth, LLCPassive
Slight overlap · 4 shared positions
$ISRG$ENSG$CTRE$PNTG
$322M
149 positions
#25Diversified Investment Strategies, LLCActive
Slight overlap · 3 shared positions
$DV$GNRC$SAM
$157M
55 positions

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Similarity is derived from each fund’s latest 13F-HR filing with the SEC. Funds are ranked by the overlap of distinctive conviction holdings; near-universal mega-cap positions are excluded so the ranking reflects shared strategy, not common index exposure. Data is informational only and not investment advice.