NYSE: CIEN · Electronic Technology
Which UK funds hold Ciena Corporation (CIEN)?
Ciena Corporation (CIEN) is among the ten largest holdings of 1 UK fund Fundology covers, according to the holdings each fund publishes. The largest weight is 0.26%, in EWSP (iShares S&P 500 Equal Weight UCITS ETF AccumUSD), as of 09/10/2026. In all, 161 funds list it among their published holdings. 34 swap-based funds also list Ciena Corporation (CIEN) in the substitute baskets they hold as collateral; they track different indices through swaps and are not counted as holders.
UK funds that hold Ciena Corporation
Funds where it is one of the ten largest holdings, largest weight first. A weight is the share of the fund’s money in this company.
| Fund | Weight in the fund | Holdings as of |
|---|---|---|
| EWSP · iShares S&P 500 Equal Weight UCITS ETF AccumUSDIE000MLMNYS0 · one portfolio, 2 share classes | 0.26% |
Source: fund issuers’ published holdings, dates differ by fund
Funds that hold it further down
160 more funds list Ciena Corporation below their ten largest holdings.
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About Ciena Corporation
Ciena Corporation is listed on NYSE under the symbol CIEN, in the electronic technology sector as TradingView classifies it. Its market value was about $47.2bn (in US dollars) on 16/10/2026.
A fund’s weight in a company is the share of the fund’s money held in that company’s shares. A weight of 5% in a fund worth £1 billion is about £50 million. Index funds hold companies in proportion to their size in the index, so the largest companies appear in many funds at similar weights.
The list above comes from holdings the fund issuers publish, each dated, and names the funds where Ciena Corporation is one of the ten largest holdings — the part of every fund page open to anyone. Some issuers publish only their largest ten, so a fund can hold Ciena Corporation without it appearing in any list here. When two funds both hold the same large companies, owning both can be closer to owning one than it looks: the comparison page measures that overlap when both funds publish enough of their holdings.
Share price
- Latest price
- $332.73
- −6.67%on the day
- 52-week range
- $159.56–$637.51
- Price change, 1 year
- +95.2%
- Price change, this year
- +38.1%
- Market value
- $47.2bn
- Price to earnings (12 months)
- 74.2
Source: TradingView, as of , at least 15 min delayed