Capital Research Global Investors's ownership history for CIEN

Capital Research Global Investors currently holds 2.8M shares with a market value of $1.1B. It started holding CIEN on 2026-03-31. At its peak, it held 2.8M shares on 2026-03-31. Its highest holding value was $1.1B on 2026-03-31. At its lowest, it held 2.8M shares on 2026-03-31, with a value of $1.1B on 2026-03-31.