Range Low Price High Price Comment
30 days $417.34 $637.51 Friday, 12th Jun 2026 CIEN stock ended at $445.98. This is 0.171% more than the trading day before Thursday, 11th Jun 2026. During the day the stock fluctuated 4.03% from a day low at $440.71 to a day high of $458.47.
90 days $344.99 $637.51
52 weeks $71.72 $637.51

Historical Ciena Corporation prices

Date Open High Low Close Volume
Jun 12, 2026 $451.58 $458.47 $440.71 $445.98 2 170 876
Jun 11, 2026 $441.66 $451.10 $430.82 $445.22 2 975 772
Jun 10, 2026 $437.75 $450.78 $424.58 $434.65 3 858 246
Jun 09, 2026 $465.91 $467.60 $417.34 $439.34 7 851 965
Jun 08, 2026 $489.78 $491.00 $457.79 $466.67 5 611 074
Jun 05, 2026 $512.31 $525.15 $488.14 $488.21 4 195 421
Jun 04, 2026 $552.39 $552.39 $491.00 $535.63 7 611 820
Jun 03, 2026 $628.51 $637.51 $609.79 $620.37 2 654 015
Jun 02, 2026 $583.58 $629.61 $581.63 $627.00 2 725 900
Jun 01, 2026 $559.52 $579.97 $552.59 $569.61 2 894 237
May 29, 2026 $566.02 $582.20 $539.59 $580.23 2 288 838
May 28, 2026 $598.80 $604.43 $561.30 $570.18 1 809 003
May 27, 2026 $605.54 $605.54 $576.88 $582.08 1 748 942
May 26, 2026 $591.00 $605.61 $576.00 $602.39 1 404 230
May 22, 2026 $599.00 $599.49 $574.95 $583.74 1 413 086
May 21, 2026 $557.00 $590.03 $555.71 $587.23 1 545 093
May 20, 2026 $554.21 $572.39 $545.10 $554.76 1 984 272
May 19, 2026 $511.37 $542.72 $499.01 $541.92 2 309 960
May 18, 2026 $552.41 $567.08 $516.61 $524.53 2 318 317
May 15, 2026 $571.30 $574.20 $553.30 $554.46 2 420 403
May 14, 2026 $577.90 $591.57 $566.00 $591.57 1 119 407
May 13, 2026 $594.00 $598.84 $562.50 $577.90 1 265 749
May 12, 2026 $567.78 $582.00 $546.98 $577.15 1 599 282
May 11, 2026 $558.00 $593.00 $550.49 $581.47 2 378 731
May 08, 2026 $549.00 $564.83 $538.77 $548.11 1 495 383

FAQ

What are historical stock prices?
Historical stock prices refer to a stock’s recorded prices at various past points. These prices include several key figures that help investors and analysts evaluate a stock’s performance over time:
Open: Open price for the trading day.
High: Highest price for the trading day.
Low: Lowest price for the trading day.
Close: Close price for the trading day.

Additionally, historical prices often include:
Volume is the number of shares traded during the day. It indicates how actively a stock was traded and can provide insights into market sentiment and liquidity.

How can I use CIEN stock historical prices to predict future price movements?
Trend Analysis: Examine the CIEN stock’s historical trends to identify patterns that might continue.
Moving Averages: Use moving averages to detect potential reversal points.
Momentum Indicators: Apply indicators like RSI or MACD to assess the momentum and strength of price movements.
Volume Analysis: Analyze trading volume alongside price changes to gauge trend strength.
Statistical Methods: Use statistical tools such as regression analysis to model and forecast future prices based on past data.
These techniques can provide insights but should be used with risk management practices to mitigate potential losses.

What impact do stock splits have on historical price data?
When a company performs a stock split, it adjusts the historical price data to reflect the new, lower trading price as if it had always been that way.

This ensures consistency for anyone analyzing the stock’s past prices. The adjustment helps prevent misleading signals on charts, such as false sell signals or bearish trends that aren’t there. For instance, in a 2-for-1 stock split, the price per share is cut in half, which would otherwise appear as a dramatic drop on the chart. If someone didn’t know about the split, they might wrongly think something negative happened to the company. Most technical indicators would also react to this apparent drop by signaling to sell.

A stock split, while making the shares seem more affordable and potentially more attractive to investors, doesn’t alter the company’s fundamental value.

Why do the CIEN stock historical prices show a range for periods like 30 days, 90 days, and 52 weeks?
The range provides the lowest and highest prices at which the stock has traded during the specified period. This helps investors understand the stock’s volatility and price variability within that timeframe.

How can I use historical price volatility to assess risk?
High price volatility historically indicates higher risk and potentially higher returns. Investors can gauge the stock’s risk level by examining the range between high and low prices over various periods.
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ABOUT CIENA CORPORATION
Ciena
Ciena Corporation provides network hardware, software, and services that support the transport, routing, switching, aggregation, service delivery, and management of video, data, and voice traffic on communications networks worldwide. The company's Networking Platforms segment offers hardware networking products and solutions that optimized for the convergence of coherent optical transport, optical transport network switching, and packet switching...
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