CIEN position history
The shares of Ciena (CIEN) that MAIRS & POWER INC reported in each quarter’s 13F.
Shares held by quarter
New Add Reduce Exit
- 2025 Q2: 4,000 shares, $325K, <0.01% of portfolio, New
- 2025 Q3: 3,000 shares, $437K, <0.01% of portfolio, Reduce −25.0%
- 2025 Q4: 3,000 shares, $702K, <0.01% of portfolio
- 2026 Q1: 2,800 shares, $1.1M, 0.01% of portfolio, Reduce −6.7%
- 2026 Q2: 2,800 shares, $1.4M, 0.01% of portfolio
| Holdings date | Value | % of holdings | Shares | Filing date | All 13F holders |
|---|