CIENA CORP · CUSIP 171779309 · CIK 1683182
As of 2026-06-30, Front Street Capital Management, Inc. reported 47.98K CIEN (shares), valued at $23.53M, or 2.67% of its reported non-derivative portfolio. Filed 2026-08-14.
Verify history & sources →Shares decreased 19.51%; reported value increased 1.71%, and weight changed -0.40 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.
Left: % · Right: Shares · Independently scaled axes
Exact data and methodology
Axes scale independently; a crossing does not mean equal values. Weight uses each quarter's total reported non-derivative value. Same CUSIP; missing quarters are gaps, not zero. Revised history may include later disclosures.
| Quarter | Weight | Quantity | Source |
|---|---|---|---|
| Q2 2026 | 2.67% | 47,975 | SEC filing ↗Filed Aug 14, 2026 |
| Q1 2026 | 3.07% | 59,605 | SEC filing ↗Filed May 21, 2026 |
| Q4 2025 | 2.86% | 86,259 | SEC filing ↗Filed Feb 18, 2026 |
| Q3 2025 | 2.20% | 97,873 | SEC filing ↗Filed Nov 14, 2025 |
| Q2 2025 | 1.56% | 100,296 | SEC filing ↗Filed Aug 15, 2025 |
| Q1 2025 | 1.16% | 100,372 | SEC filing ↗Filed May 16, 2025 |
| Q4 2024 | 1.64% | 111,098 | SEC filing ↗Filed Feb 13, 2025 |
| Q3 2024 | 1.11% | 111,645 | SEC filing ↗Filed Nov 13, 2024 |
| Q2 2024 | 1.04% | 112,717 | SEC filing ↗Filed Aug 14, 2024 |
| Q1 2024 | 1.06% | 114,132 | SEC filing ↗Filed May 14, 2024 |
| Q4 2023 | 1.03% | 114,353 | SEC filing ↗Filed Feb 15, 2024 |
History & evidence by quarter
| Quarter | Weight | Quantity | Value | Change explained | Source |
|---|---|---|---|---|---|
| Q4 2023 | 1.03% | 114,353 | $5.15M | The prior quarter is outside the free window. Sign in for the comparison. | SEC filing ↗ Filed Feb 15, 2024 |
| Q1 2024 | 1.06% | 114,132 | $5.64M | Shares decreased 0.19%; reported value increased 9.66%, and weight changed +0.03 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed May 14, 2024 |
| Q2 2024 | 1.04% | 112,717 | $5.43M | Shares decreased 1.24%; reported value decreased 3.77%, and weight changed -0.02 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Aug 14, 2024 |
| Q3 2024 | 1.11% | 111,645 | $6.88M | Shares decreased 0.95%; reported value increased 26.61%, and weight changed +0.07 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Nov 13, 2024 |
| Q4 2024 | 1.64% | 111,098 | $9.42M | Shares decreased 0.49%; reported value increased 37.03%, and weight changed +0.53 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Feb 13, 2025 |
| Q1 2025 | 1.16% | 100,372 | $6.07M | Shares decreased 9.65%; reported value decreased 35.63%, and weight changed -0.48 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed May 16, 2025 |
| Q2 2025 | 1.56% | 100,296 | $8.16M | Shares decreased 0.08%; reported value increased 34.49%, and weight changed +0.40 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Aug 15, 2025 |
| Q3 2025 | 2.20% | 97,873 | $14.25M | Shares decreased 2.42%; reported value increased 74.73%, and weight changed +0.64 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Nov 14, 2025 |
| Q4 2025 | 2.86% | 86,259 | $20.17M | Shares decreased 11.87%; reported value increased 41.54%, and weight changed +0.66 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Feb 18, 2026 |
| Q1 2026 | 3.07% | 59,605 | $23.14M | Shares decreased 30.90%; reported value increased 14.71%, and weight changed +0.21 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed May 21, 2026 |
| Q2 2026 | 2.67% | 47,975 | $23.53M | Shares decreased 19.51%; reported value increased 1.71%, and weight changed -0.40 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Aug 14, 2026 |
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