Daily trading records
NiSource Stock Price on August 18, 2026
Direct answer
NiSource closed at $42.12 on August 18, 2026.
The open was $43.22, the high was $43.22 and the low was $42.01.
Volume was 4,419,658. The change from the prior close was -$0.25 (-0.59%).
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Review NiSource's price trend and period performance.
The chart connects verified session closes from May 21, 2026 through August 18, 2026.
Period performance is calculated from verified trading sessions.
5-session performance
+0.26%
From the August 11, 2026 close of $42.01 to $42.12 on August 18, 2026.
20-session performance
-7.16%
From the July 21, 2026 close of $45.37 to $42.12 on August 18, 2026.
60-session performance
-11.72%
From the May 21, 2026 close of $47.71 to $42.12 on August 18, 2026.
Verified data
- Open
- $43.22
- High
- $43.22
- Low
- $42.01
- Close
- $42.12
- Volume
- 4,419,658
- Prior-close change
- -$0.25 (-0.59%)
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Read the frequently asked questions.
What was NiSource's closing price on August 18, 2026?
NiSource closed at $42.12 on August 18, 2026.
What were NiSource's open, high and low on August 18, 2026?
The open was $43.22, the high was $43.22 and the low was $42.01.
How much did NiSource change from the prior close on August 18, 2026?
The change from the prior close was -$0.25 (-0.59%).
What was NiSource's volume on August 18, 2026?
Trading volume was 4,419,658 shares.
What is the source for NiSource's daily prices?
Daily aggregate prices are provided by Polygon.