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Portolan Capital Management, LLC

Q2 2026 13F filing

Updated 27 days ago

148 disclosed positions worth $2.7B

Portfolio value
$2.7B
Total holdings
148
New positions
36
Closed positions
32
Increased
50
Decreased
58
Turnover
46.0%
Filed
2026-08-14

Full holdings

Every line item disclosed in Q2 2026

V
1.VPG

VISHAY PRECISION GROUP INC

-1.1%
Value
$151.1M
Shares
1.01M
% Port
5.66%
V

VIRTU FINL INC

+76.8%
Value
$127.6M
Shares
2.14M
% Port
4.78%
T

TTM TECHNOLOGIES INC

-30.2%
Value
$95M
Shares
507.8K
% Port
3.56%
M
4.MOD

MODINE MFG CO

-23.9%
Value
$83.8M
Shares
313.7K
% Port
3.14%
Q

QUALYS INC

+121.7%
Value
$72.8M
Shares
529.8K
% Port
2.73%
F

SHIFT4 PMTS INC

+419.9%
Value
$54.2M
Shares
1.11M
% Port
2.03%
M
7.MEC

MAYVILLE ENGR CO INC

+58.2%
Value
$48.7M
Shares
1.30M
% Port
1.82%
E

ENOVA INTL INC

+145.7%
Value
$47.9M
Shares
198.8K
% Port
1.79%
S

SEMTECH CORP

-11.3%
Value
$47.7M
Shares
294.6K
% Port
1.79%
C
10.CLS

CELESTICA INC

-35.9%
Value
$46.3M
Shares
126.9K
% Port
1.73%
U
11.UTHR

UNITED THERAPEUTICS CORP DEL

+28.5%
Value
$44.2M
Shares
81.5K
% Port
1.65%
G
12.GENI

GENIUS SPORTS LIMITED

+151.7%
Value
$42.6M
Shares
7.03M
% Port
1.59%
P
13.POWL

POWELL INDS INC

+92.0%
Value
$41.7M
Shares
145.6K
% Port
1.56%
P
14.PENG

PENGUIN SOLUTIONS INC

Value
$41.5M
Shares
546.2K
% Port
1.55%
?
15.N/A

DAVE INC

-0.1%
Value
$39.2M
Shares
105.3K
% Port
1.47%
L
16.LPG

FLEX LTD

-48.3%
Value
$37.1M
Shares
229.0K
% Port
1.39%
A
17.ALNT

ALLIENT INC

+11.2%
Value
$37M
Shares
359.7K
% Port
1.39%
P
18.PLPC

PORCH GROUP INC

+14.5%
Value
$36.9M
Shares
2.46M
% Port
1.38%
A
19.AKAM

AKAMAI TECHNOLOGIES INC

-26.7%
Value
$36.7M
Shares
310.4K
% Port
1.37%
C
20.CGC

CANDEL THERAPEUTICS INC

+20.6%
Value
$36M
Shares
3.49M
% Port
1.35%
T
21.TLN

TALEN ENERGY CORP

+10.7%
Value
$34.7M
Shares
90.3K
% Port
1.30%
R
22.RRX

REGAL REXNORD CORPORATION

+154.7%
Value
$32.8M
Shares
137.5K
% Port
1.23%
L
23.LNTH

LANTHEUS HLDGS INC

-30.8%
Value
$32M
Shares
288.7K
% Port
1.20%
B
24.BIIB

BIOGEN INC

+20.6%
Value
$30.9M
Shares
142.9K
% Port
1.16%
V
25.VECO

VEECO INSTRS INC DEL

+58.5%
Value
$30.4M
Shares
401.6K
% Port
1.14%
?
26.N/A

LUXEXPERIENCE BV

+8.6%
Value
$30.1M
Shares
4.05M
% Port
1.13%
Z
27.ZETA

ZETA GLOBAL HOLDINGS CORP

+209.0%
Value
$29.6M
Shares
1.50M
% Port
1.11%
C
28.CLBT

CELLEBRITE DI LTD

-11.4%
Value
$28.2M
Shares
1.93M
% Port
1.06%
S
29.SRAD

SPORTRADAR GROUP AG

Value
$27.2M
Shares
1.82M
% Port
1.02%
G
30.GOOS

CANADA GOOSE HLDGS INC

-14.5%
Value
$26.2M
Shares
2.75M
% Port
0.98%
B
31.BAND

BANDWIDTH INC

Value
$26.1M
Shares
412.7K
% Port
0.98%
W
32.WRBY

WARBY PARKER INC

+68.5%
Value
$25.6M
Shares
843.9K
% Port
0.96%
K
33.KTB

KONTOOR BRANDS INC

Value
$24.3M
Shares
292.1K
% Port
0.91%
O
34.OSK

OSHKOSH CORP

+766.9%
Value
$24.2M
Shares
157.6K
% Port
0.91%
E
35.ECPG

ENCORE CAP GROUP INC

Value
$23.9M
Shares
255.7K
% Port
0.89%
T
36.TWLO

TWILIO INC

+54.3%
Value
$23.8M
Shares
115.4K
% Port
0.89%
S
37.SEZL

SEZZLE INC

+93.8%
Value
$23.3M
Shares
135.7K
% Port
0.87%
R
38.RELY

REMITLY GLOBAL INC

+45.8%
Value
$22.8M
Shares
1.02M
% Port
0.85%
A
39.ACMR

ACM RESH INC

+113.1%
Value
$22.5M
Shares
177.4K
% Port
0.84%
E
40.ESI

ELEMENT SOLUTIONS INC

+112.1%
Value
$22.4M
Shares
469.2K
% Port
0.84%
N

NOKIA CORP

-31.3%
Value
$21.9M
Shares
1.65M
% Port
0.82%
B
42.BB

BLACKBERRY LTD

Value
$21.7M
Shares
1.71M
% Port
0.81%
I
43.IFF

INTERNATIONAL FLAVORS&FRAGRA

Value
$21.3M
Shares
269.2K
% Port
0.80%
?
44.N/A

PULSE BIOSCIENCES INC

+2.7%
Value
$20.9M
Shares
753.3K
% Port
0.78%
M

MOOG INC

+67.4%
Value
$20.9M
Shares
49.3K
% Port
0.78%
R
46.REAX

THE REAL BROKERAGE INC

-23.9%
Value
$20.1M
Shares
11.04M
% Port
0.75%
C
47.CDNA

CAREDX INC

+101.2%
Value
$19.5M
Shares
684.8K
% Port
0.73%
P
48.PARR

PAR PAC HOLDINGS INC

-50.7%
Value
$19.2M
Shares
341.9K
% Port
0.72%
V
49.VSH

VISHAY INTERTECHNOLOGY INC

Value
$18.9M
Shares
351.5K
% Port
0.71%
T
50.TTWO

TAKE-TWO INTERACTIVE SOFTWAR

+125.0%
Value
$18.1M
Shares
72.5K
% Port
0.68%