CIEN fund manager activity
Ciena Corporation · NYSE. Reported by 12 tracked fund managers in their 13F filings, Q3 2014 to Q2 2026.
Q2 2026
| Manager | Activity | Shares | Value | % of portfolio | Filed |
|---|
| Gavin Baker - Atreides Management | Added | 688,521 | $337,760,862 | 3.03% | Aug 14, 2026 |
| First Eagle Investment Management | Trimmed | 2,000 | $981,120 | 0.00% | Aug 24, 2026 |
| Ken Fisher - Fisher Asset Management | Added | 679 | $333,272 | 0.00% | Aug 4, 2026 |
| Joel Greenblatt - Gotham Asset Management | Trimmed | 113,019 | $55,442,601 | 0.13% | Aug 14, 2026 |
| Stephen Mandel - Lone Pine Capital | Sold out | — | — | 0.00% | Aug 14, 2026 |
| Mairs & Power Funds | No change | 2,800 | $1,373,568 | 0.01% | Aug 14, 2026 |
| Alex Sacerdote - Whale Rock Capital Management | Sold out | — | — | 0.00% | Aug 14, 2026 |
Q1 2026
| Manager | Activity | Shares | Value | % of portfolio | Filed |
|---|
| Gavin Baker - Atreides Management | Trimmed | 676,807 | $262,756,782 | 6.40% | May 18, 2026 |
| First Eagle Investment Management | Trimmed | 2,600 | $1,009,398 | 0.00% | May 14, 2026 |
| Ken Fisher - Fisher Asset Management | New | 610 | $237,038 | 0.00% | May 5, 2026 |
| Joel Greenblatt - Gotham Asset Management | Trimmed | 121,304 | $47,093,852 | 0.14% | May 15, 2026 |
| Stephen Mandel - Lone Pine Capital | New | 809,522 | $314,280,726 | 2.51% | May 15, 2026 |
| Mairs & Power Funds | Trimmed | 2,800 | $1,087,044 | 0.01% | May 14, 2026 |
| Alex Sacerdote - Whale Rock Capital Management | Trimmed | 231,267 | $89,784,787 | 1.16% | May 15, 2026 |
Older quarters