How is hedge fund similarity measured?

Similarity is computed from each fund's top conviction holdings in their latest 13F filing. Funds are scored by the overlap of distinctive shared positions (the mega-caps that nearly every fund owns are excluded), so the ranking reflects genuinely shared strategy rather than common index exposure.

Hedge Funds Similar to Portolan

13F Portfolio OverlapQ2 2026Portolan portfolio →

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Most similar hedge funds by 13F overlap

Portolan Capital Management, LLC is an institutional investor managing $2.7B across 148 U.S. equity positions as of Q2 2026. Based on the overlap of conviction holdings in their latest 13F filings, the hedge funds with portfolios most similar to Portolan are G2 Investment Partners, Granahan Investment, BRANT POINT INVESTMENT, with shared positions in $TTMI, $SMTC, $MOD, $DAVE, $PRCH, $BAND. The full ranking of 25 similar funds is below.

#1G2 Investment Partners Management LLCPassive

Notable overlap · 9 shared positions

$TTMI $SMTC $MOD $DAVE $PRCH $BAND

$549M

73 positions

#2Granahan Investment Management, LLCPassive

Notable overlap · 7 shared positions

$MOD $TTMI $GENI $PRCH $DAVE $ZETA

$2.8B

150 positions

#3BRANT POINT INVESTMENT MANAGEMENT LLCActive

Notable overlap · 5 shared positions

$TTMI $MOD $FLEX $RRX $CLS

$813M

120 positions

#4ABSOLUTE INVESTMENT ADVISERS, LLCPassive

Some overlap · 6 shared positions

$SMTC $PENG $AKAM $LNTH $VECO $ECPG

$1.0B

112 positions

#5Divisadero Street Capital Management, LPActive

Some overlap · 7 shared positions

$CLS $DAVE $SEZL $RELY $ESI $ENVA

$4.4B

142 positions

#6Sidoxia Capital Management, LLCPassive

Some overlap · 5 shared positions

$ENVA $UTHR $POWL $LNTH $TWLO

$136M

88 positions

#7Prospect Capital Advisors, LLCActive

Some overlap · 3 shared positions

$TTMI $ENVA $DAVE

$220M

30 positions

#8Intrinsic Edge Capital Management LLCPassive

Some overlap · 5 shared positions

$CLS $FLEX $MOD $TLN $ACMR

$967M

120 positions

#9Arvin Capital Management LPPassive

Some overlap · 4 shared positions

$TTMI $AKAM $RRX $TLN

$766M

51 positions

#10Park West Asset Management LLCActive

Some overlap · 4 shared positions

$ENVA $SMTC $FLEX $PRCH

$1.5B

47 positions

#11Lisanti Capital Growth, LLCPassive

Some overlap · 5 shared positions

$ENVA $MOD $SMTC $ZETA $DAVE

$455M

109 positions

#12Whale Rock Capital Management LLCActive

Some overlap · 3 shared positions

$TTMI $CLS $TWLO

$12.5B

35 positions

#13Metavasi Capital LPActive

Some overlap · 3 shared positions

$TTMI $DAVE $WRBY

$287M

25 positions

#14MAPLELANE CAPITAL, LLCActive

Some overlap · 3 shared positions

$TTMI $CLS $TLN

$5.5B

86 positions

#15AYAL Capital Advisors LtdActive

Some overlap · 4 shared positions

$CLS $FLEX $PRCH $RRX

$370M

44 positions

#16PARADIGM CAPITAL MANAGEMENT INC/NYActive

Some overlap · 3 shared positions

$MOD $PENG $VECO

$3.7B

115 positions

#17Charter Oak Advisors LPActive

Some overlap · 3 shared positions

$MOD $TLN $RRX

$182M

14 positions

#18Informed Momentum Co LLCPassive

Some overlap · 7 shared positions

$SMTC $MOD $TTMI $VPG $ALNT $ENVA

$1.1B

268 positions

#19ARDSLEY ADVISORY PARTNERS LPPassive

Some overlap · 5 shared positions

$UTHR $MOD $TWLO $SEZL $RELY

$960M

145 positions

#20Panoramic Capital, LLCActive

Some overlap · 5 shared positions

$MOD $PRCH $MEC $TWLO $ZETA

$232M

43 positions

#21Shannon River Fund Management LLCActive

Some overlap · 4 shared positions

$CLS $FLEX $ALNT $TWLO

$1.1B

37 positions

#22NEEDHAM INVESTMENT MANAGEMENT LLCActive

Some overlap · 4 shared positions

$VPG $VECO $GENI $AKAM

$3.3B

176 positions

#23Herald Investment Management LtdActive

Some overlap · 4 shared positions

$CLS $VPG $BAND $QLYS

$737M

92 positions

#24Candelo Capital Management LPActive

Some overlap · 3 shared positions

$MOD $TLN $ESI

$162M

34 positions

#25Pier Capital, LLCPassive

Some overlap · 4 shared positions

$SMTC $POWL $MOD $BAND

$755M

129 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.