Daily trading records
Ionis Pharmaceuticals Stock Price on August 17, 2026
Direct answer
Ionis Pharmaceuticals closed at $58.63 on August 17, 2026.
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Review Ionis Pharmaceuticals'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
+2.97%
From the August 10, 2026 close of $56.94 to $58.63 on August 17, 2026.
20-session performance
+10.73%
From the July 20, 2026 close of $52.95 to $58.63 on August 17, 2026.
60-session performance
-21.89%
From the May 20, 2026 close of $75.06 to $58.63 on August 17, 2026.
Verified data
- Open
- $57.11
- High
- $58.74
- Low
- $56.41
- Close
- $58.63
- Volume
- 2,000,182
- Prior-close change
- +$1.39 (+2.43%)
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Read the frequently asked questions.
What was Ionis Pharmaceuticals's closing price on August 17, 2026?
Ionis Pharmaceuticals closed at $58.63 on August 17, 2026.
What were Ionis Pharmaceuticals's open, high and low on August 17, 2026?
The open was $57.11, the high was $58.74 and the low was $56.41.
How much did Ionis Pharmaceuticals change from the prior close on August 17, 2026?
The change from the prior close was +$1.39 (+2.43%).
What was Ionis Pharmaceuticals's volume on August 17, 2026?
Trading volume was 2,000,182 shares.
What is the source for Ionis Pharmaceuticals's daily prices?
Daily aggregate prices are provided by Polygon.