Advanced Drainage Systems (WMS

CUSIP: 00790r104 Class: COM

Note: Option positions (PUT/CALL) are excluded.

InstitutionSharesValue ($000)
CORBYN INVESTMENT MANAGEMENT INC/MD15,420$2,233
ISTHMUS PARTNERS, LLC2,832$410
Summit Creek Advisors LLC2,170$314
ELCO Management Co., LLC2,095$303
Ancora Advisors LLC247$36
Total (5 institutions)22,764$3,297