Portolan Capital Management
Portolan Capital Management reported 148 stocks worth $2.7B in its 13F filing for Q2 2026, filed Aug 14, 2026. Its largest holdings are VPG (5.7%), VIRT (4.8%) and TTMI (3.6%). Compared with Q1 2026, the fund opened new positions in PENG, SRAD and BAND, added to VIRT, QLYS and FOUR, trimmed VPG, TTMI and MOD and sold out of PBF, CRGY and CNR.
Holdings
| # | Stock | Value | Weight | Shares | Change | Shares, 8 qtrs | Held |
|---|---|---|---|---|---|---|---|
| 1 |  VPG Vishay Precision Group Inc | $151M | 5.7% | 1M | −12K (−1%) | 7 of 8 | |
| 2 |  VIRT Virtu Finl Inc | $128M | 4.8% | 2.1M | +930K (+77%) | 7 of 8 | |
| 3 |  TTMI Ttm Technologies Inc | $95M | 3.6% | 508K | −220K (−30%) | 8 of 8 | |
| 4 |  MOD Modine Mfg Co | $83.8M | 3.1% | 314K | −98K (−24%) | 8 of 8 | |
| 5 |  QLYS Qualys Inc | $72.8M | 2.7% | 530K | +291K (+122%) | 3 of 8 | |
| 6 |  FOUR SHIFT4 Pmts Inc | $54.2M | 2.0% | 1.1M | +900K (+420%) | 8 of 8 | |
| 7 |  MEC Mayville Engr Co Inc | $48.7M | 1.8% | 1.3M | +478K (+58%) | 3 of 8 | |
| 8 |  ENVA Enova Intl Inc | $47.9M | 1.8% | 199K | +118K (+146%) | 8 of 8 | |
| 9 |  SMTC Semtech Corp | $47.7M | 1.8% | 295K | −38K (−11%) | 8 of 8 | |
| 10 |  CLS Celestica Inc | $46.3M | 1.7% | 127K | −71K (−36%) | 8 of 8 |
Positions at Jun 30, 2026, as reported. Change is against the fund's Q1 2026 filing; weight is the share of the fund's reported stocks.
Sold out
held in Q1 2026, gone in Q2 2026| Stock | Value last quarter | Shares sold |
|---|---|---|
 PBF Pbf Energy Inc | $38.1M | 800K |
 CRGY Crescent Energy Company | $35.1M | 2.6M |
 CNR Core Natural Resources Inc | $24.8M | 237K |
 MUSA Murphy USA Inc | $23.8M | 48K |
 CRCL Circle Internet Group Inc | $20.4M | 214K |
🔒 Free account: see all 30.
Reported value
last 8 quartersThe value of the US stocks the fund reported, at quarter end prices. It moves with the market as well as with buying and selling.
Filings for Q2 2026
straight from the SEC| Filed | Form | Quarter | |
|---|---|---|---|
| Aug 14, 2026 | 13F-HR | Q2 2026 | SEC filing ↗ |
Other superinvestors
All hedge fund holdings →Portolan Capital Management 13F FAQ
What does Portolan Capital Management own?
Portolan Capital Management reported 148 stocks worth $2.7B in its 13F filing for Q2 2026, filed Aug 14, 2026. Its largest holdings are VPG (5.7%), VIRT (4.8%) and TTMI (3.6%). The table above lists every position in the filing (the top 10 without an account).
What did Portolan Capital Management buy and sell in Q2 2026?
Compared with Q1 2026: 36 new positions, 50 added to, 57 trimmed and 32 sold out. New positions include PENG, SRAD and BAND. It sold all of PBF, CRGY and CNR.
When will Portolan Capital Management file its next 13F?
Holdings as of Sep 30, 2026 are due by Nov 16, 2026. The filing appears on this page within minutes of reaching the SEC.
How much is Portolan Capital Management's portfolio worth?
The Q2 2026 filing reports $2.7B in US stocks. That leaves out cash, bonds, short positions and most foreign holdings, so the fund's total assets are usually larger.
For informational and educational purposes only. Not investment advice, and not a recommendation to buy or sell any security. Holdings come from the fund's SEC Form 13F filings as reported and show positions at the end of the quarter, up to 45 days before the filing. The fund may have changed its positions since. A 13F leaves out short positions, cash, bonds and most foreign holdings. See all hedge fund holdings.