The Tip Desk

CIENA CORP holding history

As of Nov. 6, 2026 (UTC)

← WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC portfolio · COM NEW · CUSIP 171779309 · SH

Quarter-end history; absent and withheld figures are not zero
March 31, 20252,005,631$121,200,2810.34%Withheld — Comparison unavailable: Comparable change withheld pending corporate-action reviewMay 9, 2025
June 30, 20252,708,540$220,285,5580.58%Withheld — Comparison unavailable: Comparable change withheld pending corporate-action reviewJuly 29, 2025
Sept. 30, 20252,440,888$355,564,1550.92%Withheld — Comparison unavailable: Comparable change withheld pending corporate-action reviewNov. 12, 2025
Dec. 31, 20251,098,593$256,927,9450.72%Withheld — Comparison unavailable: Comparable change withheld pending corporate-action reviewFeb. 9, 2026
March 31, 2026398,579$154,740,3250.51%Withheld — Comparison unavailable: Comparable change withheld pending corporate-action reviewMay 8, 2026
June 30, 2026133,801$65,637,4190.20%Withheld — Comparison unavailable: Comparable change withheld pending corporate-action reviewAug. 12, 2026

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Schedule 13G disclosures

No verified related disclosures are included in this freeze.

About reported holdings

13F reports quarter-end securities, excluding cash and shorts. Position changes do not establish trades, motives or returns; portfolio weights use disclosed 13F value.