Arkolith/Funds/Portolan Capital Management, LLC

Portolan Capital Management, LLC

CIK: 1350290Q1 2026
Active Filer
Portfolio Value
$1.9B
Positions
185
New Buys
30
41 sold
Changes
49 ↑ / 61 ↓

Top HoldingsQ1 2026

185 total positions
#SecurityValueShares% PortChangeΔ Shares
1MODINE MFG CO
COM
$89.3M412.1K4.8%
REDUCED
-123,855
2TTM TECHNOLOGIES INC
COM
$70.9M727.5K3.8%
REDUCED
-419,188
3CELESTICA INC
COM
$55.7M197.9K3.0%
ADDED
+25.6K
4VIRTU FINL INC
CL A
$53.3M1.21M2.8%
ADDED
+835.6K
5AKAMAI TECHNOLOGIES INC
COM
$48.6M423.4K2.6%
REDUCED
-100,879
6VISHAY PRECISION GROUP INC
COM
$44.3M1.02M2.4%
ADDED
+142.2K
7PAR PAC HOLDINGS INC
COM NEW
$43.5M693.8K2.3%
NEW
8POWELL INDS INC
COM
$41.0M75.8K2.2%
REDUCED
-3,286
9BAIDU INC
SPON ADR REP A
$40.8M366.4K2.2%
ADDED
+102.7K
10PBF ENERGY INC
CL A
$38.1M800.0K2.0%
NEW
11UNITED THERAPEUTICS CORP DEL
COM
$37.6M63.4K2.0%
ADDED
+26.7K
12THE REAL BROKERAGE INC
COM NEW
$36.3M14.52M1.9%
ADDED
+3.74M
13CANADA GOOSE HLDGS INC
SHS SUB VTG
$35.3M3.22M1.9%
ADDED
+1.08M
14CRESCENT ENERGY COMPANY
CL A COM
$35.1M2.60M1.9%
ADDED
+2.56M
15CASTLE BIOSCIENCES INC
COM
$33.1M1.35M1.8%
REDUCED
-379,180
16LANTHEUS HLDGS INC
COM
$31.7M417.4K1.7%
REDUCED
-58,399
17
CELLEBRITE DI LTD
ORDINARY SHARES
$30.1M2.18M1.6%
ADDED
+893.6K
18LUXEXPERIENCE BV
SPONSORED ADS
$29.9M3.73M1.6%
ADDED
+1.07M
19
FLEXTRONICS INTL LTD
ORD
$29.0M443.1K1.5%
REDUCED
-23,785
20
FABRINET
SHS
$28.6M54.8K1.5%
ADDED
+43.9K
21
OKEANIS ECO TANKERS COR
SHS
$27.3M538.9K1.5%
ADDED
+377.0K
22TALEN ENERGY CORP
COM
$26.0M81.6K1.4%
ADDED
+6.6K
23SEMTECH CORP
COM
$25.6M332.3K1.4%
REDUCED
-176,328
24CORE NATURAL RESOURCES INC
COM SHS
$24.8M237.0K1.3%
ADDED
+106.8K
25MURPHY USA INC
COM
$23.8M48.1K1.3%
NEW
Showing top 25 of 185 positions

Filing History

Q1 2026144 pos
$1.9B
Q4 2025155 pos
$1.9B

Data Source

Holdings data sourced from SEC EDGAR 13F-HR filings. Updated quarterly, approximately 45 days after quarter end. All data is public domain.

Last filed: May 15, 2026