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Jim Simons's Ciena Corporation (CIEN) position

Yes: as of Q1 2026, Jim Simons holds 98K shares of CIEN worth $36M (0.1% of the disclosed portfolio). Last quarter the position was increased by 200.0%. First disclosed Q4 2021.
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Current value
$36M
Shares held
98K
% of portfolio
0.1%
Est. average buy price (i)
$267.90
Quarter-end price
$367.84

Estimated trade prices

Average price in quarters with purchases
$92.47
Average prices in quarters with sales
  • Q1 2022: $65.45 (173K shares sold)

CIEN price vs Simons's position

1Y 3Y 5Y MAX
Dates
$20$500$1,00020192020202120222023202420252026New position of 211K shares · Q4 2021. Average closing price $61.70 · Price range $51.73–$77.60211KsharespurchasedSold 173K shares (82.0%) · Q1 2022. Average closing price $65.45 · Price range $53.70–$77.38173KsharessoldNew position of 135K shares · Q4 2023. Average closing price $44.09 · Price range $40.60–$47.16135KsharespurchasedNew position of 309K shares · Q1 2025. Average closing price $79.05 · Price range $60.43–$98.18309KsharespurchasedNew position of 33K shares · Q4 2025. Average closing price $194.00 · Price range $151.45–$242.2533KsharespurchasedAdded 65K shares (200.0%) · Q1 2026. Average closing price $304.86 · Price range $225.21–$437.7065Ksharespurchased
Average closing price · filing quarter
$304.86
Price range · filing quarter
$225.21 – $437.70
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Every quarterly change

Quarter Action Shares change Est. value change Δ Own Shares held Filing date
Q1 2026 Added +65K +$20M +200.0% 98K May 14, 2026
Q4 2025 New +33K +$6.3M – 33K Feb 12, 2026
Q1 2025 New +309K +$24M – 309K May 14, 2025
Q4 2023 New +135K +$5.9M – 135K Feb 13, 2024
Q1 2022 Reduced −173K −$11M −82.0% 38K May 13, 2022
Q4 2021 New +211K +$13M – 211K Feb 11, 2022
Data through Q1 2026 · filed May 14, 2026
6 grouped rows from 6 quarters

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Common questions

Does Jim Simons own CIEN?

Yes. As of Q1 2026, Jim Simons disclosed 98K shares of CIEN, worth $36M. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Jim Simons buy CIEN?

Jim Simons first disclosed a CIEN position in Q4 2021; every quarterly buy and sell since is in the table above. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

Did Jim Simons sell CIEN?

The quarter-by-quarter table above shows each sale and reduction Jim Simons disclosed in CIEN. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How many shares of CIEN does Jim Simons own?

Jim Simons disclosed 98K shares of CIEN as of Q1 2026. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

What price did Jim Simons pay for CIEN?

Jim Simons's estimated average buy price for CIEN is $267.90, from quarter-average prices weighted by the shares added each quarter. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How are the estimated trade prices calculated?

13F filings disclose quarter-end holdings, not trade dates or execution prices. These estimates use each covered quarter's average market price; the add average excludes the opening position and quarters without price data. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.