Plug Power is trading 4.3% down at $1.90 amid broader risk-off pressure. - No clear company-specific announcement explaining the decline surfaced in available coverage. - Markets weakened as oil prices rose after the U.S. rejected Iran’s proposal, while Treasury yields climbed on inflation concerns. - Reuters reported Brent futures up 2.7% to $107.16 a barrel and U.S. stock futures lower; rising yields can also pressure capital-intensive clean-energy companies.