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Portolan Capital Management, LLC - Portfolio Stock Holdings

Portolan Capital Management, LLC disclosed 180 stock positions in a recent SEC 13F filing. $2,670,929,336 of stock holdings were filed, with the largest holdings including VPG, VIRT, and TTMI. This filing represented positions held on June 30, 2026, and was filed on Aug. 14, 2026.

We estimate the fund has a total AUM of $2,021,361,155 and has 12 employees, per a recent ADV filing. Most of the fund’s AUM appears to come from investment companies.

Report Period:

June 30, 2026

No. of Stocks:

180

Est. Stock Holding Value:

$2,670,929,336

Top Stock Holdings By Sector

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Portfolio Stock Holdings - Portolan Capital Management, LLC

Stock
Holdings (Shares)
Holdings (USD)
% of Portfolio
Change (Shares)
Change (USD)
% Change

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