Daily trading records
NiSource Stock Price on August 21, 2026
Direct answer
NiSource closed at $40.62 on August 21, 2026.
The open was $41.77, the high was $42.38 and the low was $40.605.
Volume was 5,680,550. The change from the prior close was -$1.02 (-2.45%).
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Review NiSource'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
-4.42%
From the August 14, 2026 close of $42.50 to $40.62 on August 21, 2026.
20-session performance
-12.98%
From the July 24, 2026 close of $46.68 to $40.62 on August 21, 2026.
60-session performance
-14.43%
From the May 27, 2026 close of $47.47 to $40.62 on August 21, 2026.
Verified data
- Open
- $41.77
- High
- $42.38
- Low
- $40.605
- Close
- $40.62
- Volume
- 5,680,550
- Prior-close change
- -$1.02 (-2.45%)
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Read the frequently asked questions.
What was NiSource's closing price on August 21, 2026?
NiSource closed at $40.62 on August 21, 2026.
What were NiSource's open, high and low on August 21, 2026?
The open was $41.77, the high was $42.38 and the low was $40.605.
How much did NiSource change from the prior close on August 21, 2026?
The change from the prior close was -$1.02 (-2.45%).
What was NiSource's volume on August 21, 2026?
Trading volume was 5,680,550 shares.
What is the source for NiSource's daily prices?
Daily aggregate prices are provided by Polygon.