Ciena (CIEN) technicals and short interest
Ciena closed at $391.34 on Oct 2, 2026, in no clear trend. It trades +4.6% against its 50-day average ($373.96) and +0.0% against its 200-day average ($391.32). RSI(14): 59. 52-week range: $147.36 to $637.51, 38.6% below the high. Short interest reported to FINRA: 3.6M shares sold short at the Sep 15, 2026 settlement, 2.5% of the shares outstanding, 1.2 days to cover (+7.3% since Aug 31, 2026); published on Sep 24, 2026. Source: FINRA.
- Last close
- $391.34 (2026-10-02)
- RSI (14)
- 59
- 50-day average
- $373.96
- 200-day average
- $391.32
- Volatility (ATR)
- 5.4%
- Short interest
- 3.6M shares, 2.5% of shares (2026-09-15)
- Days to cover
- 1.2