Daily trading records
Ionis Pharmaceuticals Stock Price on August 21, 2026
Direct answer
Ionis Pharmaceuticals closed at $59.74 on August 21, 2026.
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Review Ionis Pharmaceuticals'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
+4.37%
From the August 14, 2026 close of $57.24 to $59.74 on August 21, 2026.
20-session performance
+5.64%
From the July 24, 2026 close of $56.55 to $59.74 on August 21, 2026.
60-session performance
-21.90%
From the May 27, 2026 close of $76.49 to $59.74 on August 21, 2026.
Verified data
- Open
- $59.64
- High
- $60.915
- Low
- $59.0601
- Close
- $59.74
- Volume
- 2,723,906
- Prior-close change
- +$0.98 (+1.67%)
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Read the frequently asked questions.
What was Ionis Pharmaceuticals's closing price on August 21, 2026?
Ionis Pharmaceuticals closed at $59.74 on August 21, 2026.
What were Ionis Pharmaceuticals's open, high and low on August 21, 2026?
The open was $59.64, the high was $60.915 and the low was $59.0601.
How much did Ionis Pharmaceuticals change from the prior close on August 21, 2026?
The change from the prior close was +$0.98 (+1.67%).
What was Ionis Pharmaceuticals's volume on August 21, 2026?
Trading volume was 2,723,906 shares.
What is the source for Ionis Pharmaceuticals's daily prices?
Daily aggregate prices are provided by Polygon.