OBERWEIS ASSET MANAGEMENT INC/ - Portfolio Stock Holdings

OBERWEIS ASSET MANAGEMENT INC/ disclosed 194 stock positions in a recent SEC 13F filing. $3,369,373,752 of stock holdings were filed, with the largest holdings including AAOI, LITE, and CRDO. This filing represented positions held on March 31, 2026, and was filed on May 15, 2026.

We estimate the fund has a total AUM of $5,061,020,947 and has 31 employees, per a recent ADV filing. Most of the fund’s AUM appears to come from investment companies.