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§ 13F · FUND PROFILE

Portolan Capital Management, LLC.

Institutional filer · behavioral pattern: Other. Summary pending.
AUM · $1.8B (13F)Positions · 119Turnover · · Q1Filed · May 15, 2026
CONCENTRATION
Top 10 holdings
NEW BUYS
0
+$316M deployed
EXITS
0
No exits
SECTOR SHIFT
No prior quarter data
3YR HIT RATE
Top-5 overlap
§ 01 · TOP HOLDINGS

The book · Q1 2026

FILED MAY 15, 2026
#TickerNameShares$ value% portΔ Q1
1MODMODINE MFG CO412K$89M4.8%−23%
2TTMITTM TECHNOLOGIES INC727K$71M3.8%−37%
3CLSCELESTICA INC198K$56M3.0%+15%
4VIRTVIRTU FINL INC1.21M$53M2.8%+222%
5AKAMAKAMAI TECHNOLOGIES INC423K$49M2.6%−19%
6VPGVISHAY PRECISION GROUP INC1.02M$44M2.4%+16%
7PARRPAR PAC HOLDINGS INC694K$43M2.3%NEW
8POWLPOWELL INDS INC76K$41M2.2%−4%
9BIDUBAIDU INC366K$41M2.2%+39%
10PBFPBF ENERGY INC800K$38M2.0%NEW
§ 02 · SECTOR ALLOCATION

Where the money is

Sector data pending
§ 03 · THE PORTOLAN SIGNAL

AC read

Portolan Capital Management, LLC is a Other fund managing $1.8 billion in assets. The fund runs a portfolio of 119 positions.

Read the full dossier →
§ 04 · FILING HISTORY

Q-by-Q deltas

2 FILINGS
Q1 2026
Steady book
+0 buys · 0 exits · 0 changed
Q4 2025
Steady book
+0 buys · 0 exits · 0 changed
Q3 2025
Steady book
+0 buys · 0 exits · 0 changed
Q2 2025
Steady book
+0 buys · 0 exits · 0 changed