CIEN
Ciena Corporation · Technology · Communication Equipment
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2024
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 167 | 0 | 109.96M | $53.73B | +7 | −7 |
| Q1 2026 | 170 | +8 | 110.57M | $42.60B | +12 | −5 |
| Q4 2025 | 161 | +1 | 118.52M | $27.07B | +3 | −1 |
| Q3 2025 | 22 | +1 | 86.19M | $12.55B | +1 | −1 |
| Q2 2025 | 19 | 0 | 67.83M | $5.52B | +1 | −1 |
| Q1 2025 | 16 | +2 | 16.02M | $967.48M | +2 | — |
| Q4 2024 | 14 | 0 | 15.33M | $1.30B | — | — |
| Q3 2024 | 13 | +2 | 7.15M | $440.46M | +2 | — |
| Q2 2024 | 11 | — | 5.15M | $248.36M | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Geode Capital Management ✦ (passive) | 2.37M | — | $114.46M | 0.0% | n/c | 1 | SEC ↗ |
| 2 | Geode Capital Management ✦ (passive) | 2.37M | — | $114.46M | 0.0% | n/c | 1 | SEC ↗ |
| 3 | T. Rowe Price ✦ | 1.31M | — | $63.01M | 0.0% | n/c | 1 | SEC ↗ |
| 4 | T. Rowe Price ✦ | 1.31M | — | $63.01M | 0.0% | n/c | 1 | SEC ↗ |
| 5 | AQR Capital Management ✦ | 886.35K | — | $42.70M | 0.1% | n/c | 1 | SEC ↗ |
| 6 | AQR Capital Management ✦ | 886.35K | — | $42.70M | 0.1% | n/c | 1 | SEC ↗ |
| 7 | AQR Capital Management ✦ | 886.35K | — | $42.70M | 0.1% | n/c | 1 | SEC ↗ |
| 8 | PRIMECAP Management ✦ | 122.50K | — | $5.90M | 0.0% | n/c | 1 | SEC ↗ |
| 9 | Two Sigma Investments ✦ | 113.80K | — | $5.48M | 0.0% | n/c | 1 | SEC ↗ |
| 10 | Arrowstreet Capital ✦ | 111.41K | — | $5.37M | 0.0% | n/c | 1 | SEC ↗ |
| 11 | Citadel Advisors ✦ | 70.18K | — | $3.38M | 0.0% | n/c | 1 | SEC ↗ |
| 12 | Millennium Management ✦ | 64.47K | — | $3.11M | 0.0% | n/c | 1 | SEC ↗ |
| 13 | Gotham Asset Management ✦ | 57.42K | — | $2.77M | 0.0% | n/c | 1 | SEC ↗ |
| 14 | Norges Bank ✦ (passive) | 41.08K | — | $1.98M | 0.0% | n/c | 1 | SEC ↗ |
| 15 | Marshall Wace ✦ | 4.20K | — | $202,356 | 0.0% | n/c | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| No new tracked buyers this quarter. |
Exited
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 1,070 holders, 123.89M shares, $45.16B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
No open-market insider purchases in our coverage window.
Open-market sales (S)
Officer, Director · 2.95K sh · $1.32M
Officer · 1.20K sh · $527,088
Officer · 2.50K sh · $1.10M
Officer · 5.00K sh · $2.15M
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology