Daily trading records
Ciena Stock Price on August 17, 2026
Direct answer
Ciena closed at $445.18 on August 17, 2026.
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Review Ciena's price trend and period performance.
The chart connects verified session closes from May 20, 2026 through August 17, 2026.
Period performance is calculated from verified trading sessions.
5-session performance
+14.83%
From the August 10, 2026 close of $387.70 to $445.18 on August 17, 2026.
20-session performance
+17.53%
From the July 20, 2026 close of $378.77 to $445.18 on August 17, 2026.
60-session performance
-19.75%
From the May 20, 2026 close of $554.76 to $445.18 on August 17, 2026.
Verified data
- Open
- $438.38
- High
- $458.00
- Low
- $427.445
- Close
- $445.18
- Volume
- 2,494,716
- Prior-close change
- +$16.41 (+3.83%)
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Read the frequently asked questions.
What was Ciena's closing price on August 17, 2026?
Ciena closed at $445.18 on August 17, 2026.
What were Ciena's open, high and low on August 17, 2026?
The open was $438.38, the high was $458.00 and the low was $427.445.
How much did Ciena change from the prior close on August 17, 2026?
The change from the prior close was +$16.41 (+3.83%).
What was Ciena's volume on August 17, 2026?
Trading volume was 2,494,716 shares.
What is the source for Ciena's daily prices?
Daily aggregate prices are provided by Polygon.