Daily trading records
Ionis Pharmaceuticals Stock Price on August 20, 2026
Direct answer
Ionis Pharmaceuticals closed at $58.76 on August 20, 2026.
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Review Ionis Pharmaceuticals's price trend and period performance.
The chart connects verified session closes from May 26, 2026 through August 20, 2026.
Period performance is calculated from verified trading sessions.
5-session performance
+5.17%
From the August 13, 2026 close of $55.87 to $58.76 on August 20, 2026.
20-session performance
+5.17%
From the July 23, 2026 close of $55.87 to $58.76 on August 20, 2026.
60-session performance
-22.76%
From the May 26, 2026 close of $76.07 to $58.76 on August 20, 2026.
Verified data
- Open
- $60.025
- High
- $60.41
- Low
- $58.60
- Close
- $58.76
- Volume
- 2,124,846
- Prior-close change
- -$2.04 (-3.36%)
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Read the frequently asked questions.
What was Ionis Pharmaceuticals's closing price on August 20, 2026?
Ionis Pharmaceuticals closed at $58.76 on August 20, 2026.
What were Ionis Pharmaceuticals's open, high and low on August 20, 2026?
The open was $60.025, the high was $60.41 and the low was $58.60.
How much did Ionis Pharmaceuticals change from the prior close on August 20, 2026?
The change from the prior close was -$2.04 (-3.36%).
What was Ionis Pharmaceuticals's volume on August 20, 2026?
Trading volume was 2,124,846 shares.
What is the source for Ionis Pharmaceuticals's daily prices?
Daily aggregate prices are provided by Polygon.