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Why Plug Power Stock Surged 26% in May But Is Falling Apart Again

The volatility in the hydrogen stock can be unnerving. Here's what you should do.

Why Plug Power Stock Surged 26% in May But Is Falling Apart Again

Published June 8, 2026 · Category: Finance

Overview

May was a significant month for Plug Power (NASDAQ: PLUG) as the hydrogen fuel-cell maker achieved something investors have been waiting to see for several years: its first glimpse of profitability. Shares surged after earnings, ending the month up 26.2%, according to data provided by S&P Global Market Intelligence. Although Plug Power has cooled off since then and given up much of those May gains, the stock is still up roughly 60% for the year, as of this writing.

Image source: The Motley Fool.

Plug Power has been in business for more than 25 years, but it reported its first-ever gross profit for the fourth quarter of 2025 only in March 2026. Its first-quarter earnings report in May solidified the narrative.

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Originally published at www.fool.com.

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Disclaimer: This article is for informational purposes only and does not constitute investment advice. Data may be delayed up to 15 minutes. Past performance is not indicative of future results. Consult a licensed financial advisor before making investment decisions.