Portolan Capital Management, LLC
Annual return '25
+43.0%
SPY '25
+17.7%
Alpha
+25.3ptsvs SPY
Invested
$3.8B
Holdings
144
Trades YTD
0
Performance · Fund vs SPY
Cumulative return · quarterly snapshotsCoverage 100%. 3 quarters of 2025 measured against SPY adj-close benchmark.
Top holdings · current snapshot
Source: 13F-HR01
$MOD
MODINE MFG CO
Q4 2025: Exited (was 602.5k shares)
5.0%
02
$TTMI
TTM TECHNOLOGIES INC
Q4 2025: Exited (was 1.19M shares)
4.0%
03
$CLS
CELESTICA INC
Q4 2025: Exited (was 251.6k shares)
3.1%
04
$VIRT
VIRTU FINL INC
Q3 2025: Exited (was 273.4k shares)
3.0%
05
$AKAM
AKAMAI TECHNOLOGIES INC
Held since at least Q1 2024
2.7%
06
$VPG
VISHAY PRECISION GROUP INC
Q4 2025: Exited (was 823.3k shares)
2.5%
07
$PARR
PAR PAC HOLDINGS INC
Held since at least Q1 2024
2.4%
08
$POWL
POWELL INDS INC
Q4 2025: Exited (was 148.2k shares)
2.3%
09
$BIDU
BAIDU INC
Q4 2025: Exited (was 4.6k shares)
2.3%
10
$PBF
PBF ENERGY INC
Held since at least Q1 2024
2.1%
Recent trades · Last 90 days
No Form 4 / 13D / 13G trade events on file in the recent window. 13F filers report position snapshots quarterly rather than per-trade events, so this section is most useful for managers who also file Form 4 or 13D/G.
Convergence · Pattern Engine ships in v1.1
30-day windowIn development
Convergence participation lands with the Pattern Engine.
Once the Pattern Engine ships, this section will list every active convergence event this fund is named in — with the other named funds, the Congress members on the same name, and combined position size.
Source data: SEC EDGAR · 13F-HR filings · Performance through 2025-12-31 · Last refreshed 10:29 UTC.