EdgeMarket › What Portolan Capital Management, Llc reported owning

What Portolan Capital Management, Llc reported owning

As filed on Form 13F for the quarter ending 2026-03-31, up to 45 days after that date. Long-only US-listed equity — shorts, bonds, cash and non-US listings are not on the form, so this is one leg of the book, not the book.

Reported value

1.9B

Positions

144

Quarter

2026-03-31

Shown below

50
largest by value
holdingvalue% of booksharesprice1y
MOD
MODINE MANUFACTURING CO
89.3M4.8%412.1K197.68+46.5%
TTMI
TTM TECHNOLOGIES INC
70.9M3.8%727.5K110.54+175.9%
CLS
CELESTICA INC
55.7M3.0%197.9K296.55+62.1%
VIRT
Virtu Financial, Inc.
53.3M2.8%1.2M67.93+64.0%
AKAM
AKAMAI TECHNOLOGIES INC
48.6M2.6%423.4K110.42+45.2%
VPG
Vishay Precision Group, Inc.
44.3M2.4%1.0M66.61+146.3%
PARR
PAR PACIFIC HOLDINGS, INC.
43.5M2.3%693.8K79.03+148.9%
POWL
POWELL INDUSTRIES INC
41.0M2.2%75.8K197.67+140.6%
BIDU
Baidu, Inc.
40.8M2.2%366.4K93.21+7.4%
PBF
PBF Energy Inc.
38.1M2.0%800.0K73.53+211.4%
UTHR
UNITED THERAPEUTICS Corp
37.6M2.0%63.4K513.12+67.4%
REAX
Real Brokerage Inc
36.3M1.9%14.5M2.64-39.6%
GOOS
Canada Goose Holdings Inc.
35.3M1.9%3.2M8.74-21.8%
CRGY
Crescent Energy Co
35.1M1.9%2.6M14.06+51.5%
CSTL
CASTLE BIOSCIENCES INC
33.1M1.8%1.4M34.20+72.9%
LNTH
Lantheus Holdings, Inc.
31.7M1.7%417.4K99.97+78.1%
CLBT
Cellebrite DI Ltd.
30.1M1.6%2.2M11.05-28.6%
LUXE
LuxExperience B.V.
29.9M1.6%3.7M7.77-5.5%
FLEX
FLEX LTD.
29.0M1.5%443.1K110.45+124.9%
FN
Fabrinet
28.6M1.5%54.8K436.67+55.8%
ECO
Okeanis Eco Tankers Corp.
27.3M1.5%538.9K64.71+148.9%
TLN
Talen Energy Corp
26.0M1.4%81.6K314.46-12.7%
SMTC
SEMTECH CORP
25.6M1.4%332.3K124.09+156.0%
CNR
Core Natural Resources, Inc.
24.8M1.3%237.0K95.13+37.2%
MUSA
Murphy USA Inc.
23.8M1.3%48.1K569.72+44.5%
BIIB
BIOGEN INC.
21.7M1.2%118.5K216.78+56.0%
KRUS
KURA SUSHI USA, INC.
21.0M1.1%301.2K48.34-38.5%
QLYS
QUALYS, INC.
21.0M1.1%239.0K181.98+37.7%
JBL
JABIL INC
20.5M1.1%77.2K313.21+53.5%
CRCL
Circle Internet Group, Inc.
20.4M1.1%213.8K87.98-36.2%
DHT
DHT Holdings, Inc.
19.9M1.1%1.1M19.82+80.7%
NOK
NOKIA CORP
19.2M1.0%2.4M10.21+140.8%
ALNT
ALLIENT INC
19.1M1.0%323.5K95.84+122.2%
PRIM
Primoris Services Corp
18.7M1.0%130.6K77.18-30.2%
DAVE
Dave Inc./DE
18.4M1.0%105.4K354.72+88.4%
KTOS
KRATOS DEFENSE & SECURITY SOLUTIONS, INC.
18.3M1.0%259.8K57.17-11.0%
MAMA
Mama's Creations, Inc.
18.1M1.0%1.2M16.44+103.0%
ADEA
Adeia Inc.
17.5M0.9%729.5K26.25+80.8%
UPWK
UPWORK, INC
17.2M0.9%1.6M8.61-39.4%
PLSE
PULSE BIOSCIENCES, INC.
15.8M0.8%733.4K50.42+216.1%
PRCH
Porch Group, Inc.
15.4M0.8%2.1M17.09+11.6%
HAFN
Hafnia Ltd
14.8M0.8%1.9M8.16+46.2%
MEC
Mayville Engineering Company, Inc.
14.7M0.8%821.1K21.73+54.1%
CADL
Candel Therapeutics, Inc.
14.2M0.8%2.9M13.13+136.2%
LASR
NLIGHT, INC.
12.9M0.7%225.6K47.39+82.6%
GENI
Genius Sports Ltd
12.4M0.7%2.8M8.06-36.2%
AS
Amer Sports, Inc.
11.8M0.6%357.8K32.63-12.2%
EBAY
EBAY INC
11.5M0.6%126.1K104.13+5.0%
PKE
PARK AEROSPACE CORP
11.2M0.6%410.7K33.88+87.1%
ENVA
Enova International, Inc.
11.0M0.6%80.9K242.93+125.5%

A position that grew quarter on quarter may simply reflect a higher price: if the stock rose 40% and the manager did nothing, the reported value rose 40%. Reading that as accumulation is reading the price back to yourself. More on that →

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