Steve Mandel's CIEN Position Overview
Steve Mandel (via Lone Pine Capital LLC) currently holds 809,522 shares of Ciena Corporation (CIEN) worth $314.28 M, representing 2.51% of the portfolio. First purchased in 2025-Q3, this short-term holding has been held for 3 quarters.
Based on 13F filings, Steve Mandel has maintained this position in CIEN for several quarters, showing initial confidence in the investment. Largest addition occurred in Q1 2026, adding 809,522 shares. Largest reduction occurred in Q4 2025, reducing 2.01 M shares.
Analysis based on 13F filings available since 2013 Q2
Steve Mandel's Ciena Corporation (CIEN) Holding Value Over Time
Track share changes against reported price movement
Quarterly Ciena Corporation (CIEN) Trades by Steve Mandel
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q1 2026 | +809,522 | New Buy | 809,522 | $388.23 |
| Q4 2025 | -2.01 M | Sold Out | 0 | $0.00 |
| Q3 2025 | +2.01 M | New Buy | 2.01 M | $145.67 |
Steve Mandel's Ciena Corporation Investment FAQs
Steve Mandel first purchased Ciena Corporation (CIEN) in Q3 2025, acquiring 2,006,662 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Steve Mandel has held Ciena Corporation (CIEN) for 3 quarters since Q3 2025.
Steve Mandel's largest addition to Ciena Corporation (CIEN) was in Q3 2025, adding 2,006,662 shares worth $292.31 M.
According to the latest 13F filing for Q1 2026, Steve Mandel's firm, Lone Pine Capital LLC, owns 809,522 shares of Ciena Corporation (CIEN), valued at approximately $314.28 M.
As of the Q1 2026 filing, Ciena Corporation (CIEN) represents approximately 2.51% of Steve Mandel's publicly disclosed stock portfolio, making it one of their key holdings.
Steve Mandel's peak holding in Ciena Corporation (CIEN) was 2,006,662 shares, as reported at the end of Q3 2025.