Daily trading records
Harmonic Stock Price on August 21, 2026
Direct answer
Harmonic closed at $12.47 on August 21, 2026.
The open was $12.48, the high was $12.6376 and the low was $12.228.
Volume was 1,174,938. The change from the prior close was +$0.10 (+0.81%).
Get free Harmonic email updates.
Bullstory sends one daily email when new analysis or important company news is available.
Review Harmonic's price trend and period performance.
The chart connects verified session closes from May 27, 2026 through August 21, 2026.
Period performance is calculated from verified trading sessions.
5-session performance
-10.42%
From the August 14, 2026 close of $13.92 to $12.47 on August 21, 2026.
20-session performance
+11.44%
From the July 24, 2026 close of $11.19 to $12.47 on August 21, 2026.
60-session performance
-27.12%
From the May 27, 2026 close of $17.11 to $12.47 on August 21, 2026.
Verified data
- Open
- $12.48
- High
- $12.6376
- Low
- $12.228
- Close
- $12.47
- Volume
- 1,174,938
- Prior-close change
- +$0.10 (+0.81%)
Explore related company data
Read the frequently asked questions.
What was Harmonic's closing price on August 21, 2026?
Harmonic closed at $12.47 on August 21, 2026.
What were Harmonic's open, high and low on August 21, 2026?
The open was $12.48, the high was $12.6376 and the low was $12.228.
How much did Harmonic change from the prior close on August 21, 2026?
The change from the prior close was +$0.10 (+0.81%).
What was Harmonic's volume on August 21, 2026?
Trading volume was 1,174,938 shares.
What is the source for Harmonic's daily prices?
Daily aggregate prices are provided by Polygon.