13F

Position

ValueAct in Ciena Corp

Back to the book · All holders of CIEN

Estimated mark uses implied 13F prices (value ÷ shares). Adds are treated as happening at this quarter’s mark; cuts at last quarter’s. Share jumps can be splits, not buys. This is not realized P&L.

Latest estimated mark $35.7M$233.87$388.23

QuarterSharesValueImplied pxEst. markFlowWeight
Q4 2025893.5K$209M2.7%
Q1 2026231.3K$89.8M$388.23$35.7M−$154.9M1.2%
ValueAct in CIENA CORP · 13F