CIEN
Ciena Corporation · Technology · Communication Equipment
Momentum inputs (comparable managers):
holder breadth +14.3% ·
share flow +4.5% ·
net new positions +12.5%
— formula
Broad accumulation — rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q1 2025
| 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 | State Street Global Advisors ✦ (passive) | 4.56M | -0.4% | $275.84M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 2 | Geode Capital Management ✦ (passive) | 2.50M | +3.4% | $151.27M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 3 | Geode Capital Management ✦ (passive) | 2.50M | +3.4% | $151.27M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 4 | Point72 Asset Management ✦ | 1.99M | +681.5% | $120.33M | 0.3% | ▲ Add | 3 | SEC ↗ |
| 5 | Capital World Investors ✦ | 1.85M | New | $111.98M | 0.0% | New | 1 | SEC ↗ |
| 6 | T. Rowe Price ✦ | 1.17M | -74.7% | $70.70M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 7 | T. Rowe Price ✦ | 1.17M | -74.7% | $70.70M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 8 | Millennium Management ✦ | 634.05K | +174.3% | $38.32M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 9 | Marshall Wace ✦ | 561.17K | -37.6% | $33.91M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 10 | Marshall Wace ✦ | 561.17K | -37.6% | $33.91M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 11 | Marshall Wace ✦ | 561.17K | -37.6% | $33.91M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 12 | AQR Capital Management ✦ | 543.63K | -8.7% | $32.10M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 13 | AQR Capital Management ✦ | 543.63K | -8.7% | $32.10M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 14 | AQR Capital Management ✦ | 543.63K | -8.7% | $32.10M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 15 | AQR Capital Management ✦ | 543.63K | -8.7% | $32.10M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 16 | AQR Capital Management ✦ | 543.63K | -8.7% | $32.10M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 17 | PRIMECAP Management ✦ | 478.55K | +3.2% | $28.92M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 18 | Two Sigma Investments ✦ | 465.06K | +996.9% | $28.10M | 0.1% | ▲ Add | 4 | SEC ↗ |
| 19 | Citadel Advisors ✦ | 391.70K | -11.9% | $23.67M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 20 | Citadel Advisors ✦ | 391.70K | -11.9% | $23.67M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 21 | Renaissance Technologies ✦ | 309.17K | New | $18.68M | 0.0% | New | 1 | SEC ↗ |
| 22 | Arrowstreet Capital ✦ | 201.37K | -62.0% | $12.17M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 23 | Gotham Asset Management ✦ | 167.09K | +23.4% | $10.10M | 0.1% | ▲ Add | 4 | SEC ↗ |
| 24 | D. E. Shaw & Co. ✦ | 118.00K | +646.9% | $7.13M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 25 | Norges Bank ✦ (passive) | 70.57K | -18.6% | $4.26M | 0.0% | ▼ Trim | 4 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Capital World Investors | $111.98M | 0.0% |
| Renaissance Technologies | $18.68M | 0.0% |
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