Jeremy Grantham's CIEN Position Overview
Jeremy Grantham (via Grantham, Mayo, Van Otterloo & Co. LLC) currently holds 1,949 shares of Ciena Corporation (CIEN) worth $685,697, representing 0.00% of the portfolio. First purchased in 2018-Q4, this long-term strategic position has been held for 26 quarters.
Based on 13F filings, Jeremy Grantham has maintained a strategic position in CIEN, demonstrating sustained confidence in this investment. Largest addition occurred in Q1 2019, adding 838,100 shares. Largest reduction occurred in Q3 2019, reducing 821,300 shares.
Analysis based on 13F filings available since 2013 Q2
Jeremy Grantham's Ciena Corporation (CIEN) Holding Value Over Time
Track share changes against reported price movement
Quarterly Ciena Corporation (CIEN) Trades by Jeremy Grantham
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q3 2026 | +1,949 | New Buy | 1,949 | $351.82 |
| Q2 2025 | -252,853 | Sold Out | 0 | $0.00 |
| Q1 2025 | -290,703 | Reduce 53.48% | 252,853 | $60.43 |
| Q4 2024 | -114,207 | Reduce 17.36% | 543,556 | $84.81 |
| Q3 2024 | +54,913 | Add 9.11% | 657,763 | $61.59 |
| Q2 2024 | +24,827 | Add 4.30% | 602,850 | $48.18 |
| Q1 2024 | +199,829 | Add 52.84% | 578,023 | $49.45 |
| Q4 2023 | -15,942 | Reduce 4.04% | 378,194 | $45.01 |
| Q3 2023 | +169,773 | Add 75.67% | 394,136 | $47.26 |
| Q1 2023 | +109,101 | Add 94.65% | 224,363 | $52.52 |
| Q4 2022 | -58,873 | Reduce 33.81% | 115,262 | $50.98 |
| Q3 2022 | +157,835 | Add 968.31% | 174,135 | $40.43 |
| Q2 2022 | +16,300 | New Buy | 16,300 | $45.71 |
| Q1 2022 | -32,686 | Sold Out | 0 | $0.00 |
| Q4 2021 | +19,886 | Add 155.36% | 32,686 | $76.97 |
| Q3 2021 | +12,800 | New Buy | 12,800 | $51.33 |
| Q4 2020 | -21,043 | Sold Out | 0 | $0.00 |
| Q2 2020 | -35,000 | Reduce 62.45% | 21,043 | $54.17 |
| Q1 2020 | +18,400 | Add 48.88% | 56,043 | $39.81 |
| Q4 2019 | -63,457 | Reduce 62.77% | 37,643 | $42.69 |
| Q3 2019 | -821,300 | Reduce 89.04% | 101,100 | $39.23 |
| Q2 2019 | +77,600 | Add 9.19% | 922,400 | $41.13 |
| Q1 2019 | +838,100 | Add 12508.96% | 844,800 | $37.34 |
| Q4 2018 | +6,700 | New Buy | 6,700 | $33.88 |
Jeremy Grantham's Ciena Corporation Investment FAQs
Jeremy Grantham first purchased Ciena Corporation (CIEN) in Q4 2018, acquiring 6,700 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Jeremy Grantham has held Ciena Corporation (CIEN) for 26 quarters since Q4 2018.
Jeremy Grantham's largest addition to Ciena Corporation (CIEN) was in Q1 2019, adding 844,800 shares worth $31.54 M.
According to the latest 13F filing for Q3 2026, Jeremy Grantham's firm, Grantham, Mayo, Van Otterloo & Co. LLC, owns 1,949 shares of Ciena Corporation (CIEN), valued at approximately $685,697.
As of the Q3 2026 filing, Ciena Corporation (CIEN) represents approximately 0.00% of Jeremy Grantham's publicly disclosed stock portfolio, making it one of their key holdings.
Jeremy Grantham's peak holding in Ciena Corporation (CIEN) was 922,400 shares, as reported at the end of Q2 2019.