Institutional Ownership
Ciena Corp
CUSIP 171779309COM NEWCIENQ1 2026
Shares Short
3.99M
As of Jul 15, 2026
Days to Cover
2.40
Short shares ÷ avg daily volume
Change vs Prior
+3.6%
vs previous settlement
Avg Daily Volume
1.66M
FINRA reported ADV
Short Interest History
17 settlements on record · FINRA consolidated
Higher short interest is bearish: increases show red, decreases green.
| Settlement | Shares Short | Prior | Change | Avg Daily Vol | Days to Cover |
|---|---|---|---|---|---|
| Jul 15, 2026 | 3.99M | 3.85M | +3.6% | 1.66M | 2.40 |
| Jun 30, 2026 | 3.85M | 4.76M | -19.1% | 4.07M | 1.00 |
| Jun 15, 2026 | 4.76M | 4.51M | +5.7% | 4.28M | 1.11 |
| May 29, 2026 | 4.51M | 4.53M | -0.5% | 2.09M | 2.15 |
| May 15, 2026 | 4.53M | 4.37M | +3.8% | 1.88M | 2.41 |
| Apr 30, 2026 | 4.37M | 4.69M | -7.0% | 2.16M | 2.02 |
| Apr 15, 2026 | 4.69M | 5.98M | -21.5% | 2.96M | 1.59 |
| Mar 31, 2026 | 5.98M | 5.04M | +18.5% | 3.61M | 1.66 |
| Mar 13, 2026 | 5.04M | 6.26M | -19.4% | 3.32M | 1.52 |
| Feb 27, 2026 | 6.26M | 5.62M | +11.4% | 2.43M | 2.58 |
| Feb 13, 2026 | 5.62M | 4.24M | +32.4% | 6.41M | 1.00 |
| Jan 30, 2026 | 4.24M | 5.95M | -28.7% | 2.26M | 1.88 |