Daily trading records
Plug Power Stock Price on September 18, 2026
Direct answer
Plug Power closed at $2.09 on September 18, 2026.
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Review Plug Power's price trend and period performance.
The chart connects verified session closes from June 24, 2026 through September 18, 2026.
Period performance is calculated from verified trading sessions.
5-session performance
-0.48%
From the September 11, 2026 close of $2.10 to $2.09 on September 18, 2026.
20-session performance
-5.00%
From the August 20, 2026 close of $2.20 to $2.09 on September 18, 2026.
60-session performance
-19.92%
From the June 24, 2026 close of $2.61 to $2.09 on September 18, 2026.
Verified data
- Open
- $2.13
- High
- $2.17
- Low
- $2.0201
- Close
- $2.09
- Volume
- 55,189,050
- Prior-close change
- -$0.03 (-1.42%)
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Read the frequently asked questions.
What was Plug Power's closing price on September 18, 2026?
Plug Power closed at $2.09 on September 18, 2026.
What were Plug Power's open, high and low on September 18, 2026?
The open was $2.13, the high was $2.17 and the low was $2.0201.
How much did Plug Power change from the prior close on September 18, 2026?
The change from the prior close was -$0.03 (-1.42%).
What was Plug Power's volume on September 18, 2026?
Trading volume was 55,189,050 shares.
What is the source for Plug Power's daily prices?
Daily aggregate prices are provided by Polygon.