275 institutions reported holding $1.19B of ADTRAN HOLDINGS INC (ADTN) in SEC 13F filings for 2026-06-30. Largest institutional holders: VANGUARD GROUP INC ($129.1M), BlackRock, Inc. ($108.9M), STATE STREET CORP ($42.9M), ROYCE & ASSOCIATES LP ($41.3M), UBS Group AG ($40.9M). Source: SEC Form 13F.
来源:SEC 13F 申报文件 · 截至 2026-06-30