Portolan Capital Management, LLC is an institutional investment manager that files quarterly 13F reports with the SEC. As of Q1 2026, the fund manages $1.9B in reported equity holdings across 144 positions. The largest holdings are MOD (4.8%), TTMI (3.8%), CLS (3.0%), VIRT (2.8%), AKAM (2.6%). The portfolio is concentrated in Other (85.1%), Industrials (4.6%), Technology (3.4%). Data sourced from SEC EDGAR 13F filings (CIK 1350290).