Portolan Capital Management, LLC
CIK 1350290
13F filing for Q2 2026・No. 1,385
- Holdings
- US$2.67B
- Quarter change
- +US$791.97M
- Entries
- 148
- Net bought (estimate)
- +US$221.83M
The quarter change is the holdings' value against the quarter before, price moves included — not what was bought or sold; each institution's page estimates that.
Net bought (estimate)
Each stock's change in shares at the quarter-end price, added up: a new position counts as bought, one sold out as sold, shares held long only. Splits are compared split-adjusted; corporate actions under a new CUSIP are not estimated. An estimate from the filings, not actual trades.
- New 36
- Sold out 32
- Cut 57
- Added 51
- Corporate actions 0
- Unchanged 4
Largest holdings
148 stocks worth US$2.67B, options and bonds left out.
| Stock | This quarter | Shares | Value | Weight |
|---|---|---|---|---|
| VISHAY PRECISION GROUP INCCOM | Cut | 1,008,167 | US$151.13M | 5.66% |
| VIRTVIRTU FINL INCCL A | Added | 2,142,215 | US$127.61M | 4.78% |
| TTMITTM TECHNOLOGIES INCCOM | Cut | 507,838 | US$94.98M | 3.56% |
| MODMODINE MFG COCOM | Cut | 313,683 | US$83.76M | 3.14% |
| QLYSQUALYS INCCOM | Added | 529,807 | US$72.84M | 2.73% |
| FOURSHIFT4 PMTS INCCL A | Added | 1,114,116 | US$54.19M | 2.03% |
| MAYVILLE ENGR CO INCCOM | Added | 1,299,256 | US$48.67M | 1.82% |
| ENOVA INTL INCCOM | Added | 198,795 | US$47.86M | 1.79% |
| SMTCSEMTECH CORPCOM | Cut | 294,619 | US$47.68M | 1.79% |
| CLSCELESTICA INCCOM | Cut | 126,856 | US$46.28M | 1.73% |
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Filings
The quarter's original 13F filings (SEC).
- 13F-HRFiled August 14, 2026SEC ↗
13F covers long positions in US-listed securities only; the data is SEC's, filed within 45 days of the quarter's end.