Security record · archived quarter
CIEN
Ciena Corporation · Technology · Communication Equipment
19Tracked holders
0Δ holders
67.83MShares held
$5.52BReported value
+1New positions
−1Exits
Momentum inputs (comparable managers): holder breadth 0.0% · share flow -2.3% · net new positions 0.0% — formula
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2025
Ownership over time
| 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 | — | — |
Who holds it · Q2 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Fidelity (FMR) ✦ | 21.23M | — | $1.73B | 0.1% | n/c | 1 | SEC ↗ |
| 2 | Fidelity (FMR) ✦ | 21.23M | — | $1.73B | 0.1% | n/c | 1 | SEC ↗ |
| 3 | Fidelity (FMR) ✦ | 21.23M | — | $1.73B | 0.1% | n/c | 1 | SEC ↗ |
| 4 | Fidelity (FMR) ✦ | 21.23M | — | $1.73B | 0.1% | n/c | 1 | SEC ↗ |
| 5 | Fidelity (FMR) ✦ | 21.23M | — | $1.73B | 0.1% | n/c | 1 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 17.07M | — | $1.39B | 0.0% | n/c | 1 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 17.07M | — | $1.39B | 0.0% | n/c | 1 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 17.07M | — | $1.39B | 0.0% | n/c | 1 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 17.07M | — | $1.39B | 0.0% | n/c | 1 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 17.07M | — | $1.39B | 0.0% | n/c | 1 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 17.07M | — | $1.39B | 0.0% | n/c | 1 | SEC ↗ |
| 12 | BlackRock ✦ (passive) | 17.07M | — | $1.39B | 0.0% | n/c | 1 | SEC ↗ |
| 13 | BlackRock ✦ (passive) | 17.07M | — | $1.39B | 0.0% | n/c | 1 | SEC ↗ |
| 14 | BlackRock ✦ (passive) | 17.07M | — | $1.39B | 0.0% | n/c | 1 | SEC ↗ |
| 15 | BlackRock ✦ (passive) | 17.07M | — | $1.39B | 0.0% | n/c | 1 | SEC ↗ |
| 16 | BlackRock ✦ (passive) | 17.07M | — | $1.39B | 0.0% | n/c | 1 | SEC ↗ |
| 17 | BlackRock ✦ (passive) | 17.07M | — | $1.39B | 0.0% | n/c | 1 | SEC ↗ |
| 18 | BlackRock ✦ (passive) | 17.07M | — | $1.39B | 0.0% | n/c | 1 | SEC ↗ |
| 19 | BlackRock ✦ (passive) | 17.07M | — | $1.39B | 0.0% | n/c | 1 | SEC ↗ |
| 20 | BlackRock ✦ (passive) | 17.07M | — | $1.39B | 0.0% | n/c | 1 | SEC ↗ |
| 21 | BlackRock ✦ (passive) | 17.07M | — | $1.39B | 0.0% | n/c | 1 | SEC ↗ |
| 22 | BlackRock ✦ (passive) | 17.07M | — | $1.39B | 0.0% | n/c | 1 | SEC ↗ |
| 23 | BlackRock ✦ (passive) | 17.07M | — | $1.39B | 0.0% | n/c | 1 | SEC ↗ |
| 24 | BlackRock ✦ (passive) | 17.07M | — | $1.39B | 0.0% | n/c | 1 | SEC ↗ |
| 25 | BlackRock ✦ (passive) | 17.07M | — | $1.39B | 0.0% | n/c | 1 | SEC ↗ |
| 26 | The Vanguard Group ✦ (passive) | 15.09M | — | $1.23B | 0.0% | n/c | 1 | SEC ↗ |
| 27 | The Vanguard Group ✦ (passive) | 15.09M | — | $1.23B | 0.0% | n/c | 1 | SEC ↗ |
| 28 | The Vanguard Group ✦ (passive) | 15.09M | — | $1.23B | 0.0% | n/c | 1 | SEC ↗ |
| 29 | The Vanguard Group ✦ (passive) | 15.09M | — | $1.23B | 0.0% | n/c | 1 | SEC ↗ |
| 30 | The Vanguard Group ✦ (passive) | 15.09M | — | $1.23B | 0.0% | n/c | 1 | SEC ↗ |
| 31 | The Vanguard Group ✦ (passive) | 15.09M | — | $1.23B | 0.0% | n/c | 1 | SEC ↗ |
| 32 | State Street Global Advisors ✦ (passive) | 4.45M | -2.4% | $362.32M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 33 | Point72 Asset Management ✦ | 2.75M | +38.3% | $224.04M | 0.6% | ▲ Add | 4 | SEC ↗ |
| 34 | Geode Capital Management ✦ (passive) | 2.50M | 0.0% | $203.58M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 35 | Geode Capital Management ✦ (passive) | 2.50M | 0.0% | $203.58M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 36 | Capital World Investors ✦ | 1.71M | -7.9% | $138.79M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 37 | AQR Capital Management ✦ | 1.22M | +124.6% | $99.30M | 0.1% | ▲ Add | 5 | SEC ↗ |
| 38 | AQR Capital Management ✦ | 1.22M | +124.6% | $99.30M | 0.1% | ▲ Add | 5 | SEC ↗ |
| 39 | AQR Capital Management ✦ | 1.22M | +124.6% | $99.30M | 0.1% | ▲ Add | 5 | SEC ↗ |
| 40 | AQR Capital Management ✦ | 1.22M | +124.6% | $99.30M | 0.1% | ▲ Add | 5 | SEC ↗ |
| 41 | AQR Capital Management ✦ | 1.22M | +124.6% | $99.30M | 0.1% | ▲ Add | 5 | SEC ↗ |
| 42 | PRIMECAP Management ✦ | 554.50K | +15.9% | $45.10M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 43 | Millennium Management ✦ | 271.53K | -57.2% | $22.08M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 44 | T. Rowe Price ✦ | 262.22K | -77.6% | $21.33M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 45 | T. Rowe Price ✦ | 262.22K | -77.6% | $21.33M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 46 | Gotham Asset Management ✦ | 177.12K | +6.0% | $14.41M | 0.1% | ▲ Add | 5 | SEC ↗ |
| 47 | Marshall Wace ✦ | 161.69K | -71.2% | $13.15M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 48 | Marshall Wace ✦ | 161.69K | -71.2% | $13.15M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 49 | Marshall Wace ✦ | 161.69K | -71.2% | $13.15M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 50 | Two Sigma Investments ✦ | 120.80K | -74.0% | $9.82M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 51 | Norges Bank ✦ (passive) | 78.19K | +10.8% | $6.36M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 52 | D. E. Shaw & Co. ✦ | 65.33K | -44.6% | $5.31M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 53 | D. E. Shaw & Co. ✦ | 65.33K | -44.6% | $5.31M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 54 | Arrowstreet Capital ✦ | 50.30K | -75.0% | $4.09M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 55 | Bridgewater Associates ✦ | 47.96K | New | $3.90M | 0.0% | New | 1 | SEC ↗ |
| 56 | Citadel Advisors ✦ | 9.56K | -97.6% | $777,840 | 0.0% | ▼ Trim | 5 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Bridgewater Associates | $3.90M | 0.0% |
Exited
| Renaissance Technologies | $18.68M | was 0.0% |
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.
Frequently co-owned
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)
Aug 17
SMITH GARY B
Officer, Director · 2.95K sh · $1.32M
Aug 17
Gage Brodie
Officer · 1.20K sh · $527,088
Aug 14
Rothenstein David M
Officer · 2.50K sh · $1.10M
Aug 14
Graff Marc D.
Officer · 5.00K sh · $2.15M
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology
Aug 06
SC 13G/A — FMR LLC
Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR.
Reporting period: Q2 2025 ·
Methodology ·
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