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The gain covers the period; price, market cap, sector and country show each company as it is today.
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Over May 2026, 54% of the 4,275 ranked companies finished higher and the median move was +0.4%; Technology led on median (+10.3%) and Energy lagged (-7.9%). The S&P 500 fund (SPY) moved +5.26% between its Apr 30, 2026 and May 29, 2026 closes. A company that began trading during the period is measured from its first close, over a shorter window.
This page answers a question about a finished month with data: which US-listed stocks posted the strongest price gains in May 2026. The ranking is based on observed market performance, not analyst ratings, price targets, or investment recommendations.
Use the list to research momentum, market breadth, sector strength, and catalysts behind large moves. Before acting on any stock, review the company's news, SEC filings, liquidity, volatility, and your own risk constraints.
Among the 4,275 NYSE, Nasdaq and NYSE American stocks currently eligible for this ranking, HYLN (Hyliion Holdings Corp.) has the highest gain in May 2026 with +266%. Following are RXT (+254%) and REPL (+238%).
This ranking shows the top performing stocks and biggest stock gainers of May 2026, measured from the last close of April to the last close of May.
Monthly performance rankings can reveal price strength, sustained momentum, sector rotation, and event-driven moves that are not visible in one-day movers lists. The table is informational only and does not recommend any stock to buy, sell, or hold.
HYLN (Hyliion Holdings Corp.) has the highest monthly gain in this ranking for May 2026, with a gain of 266%. Top performers include HYLN, RXT, REPL.
The biggest gainers in May 2026 were: HYLN (+266%), RXT (+254%), REPL (+238%), AGL (+230%), OTLK (+192%). These monthly rankings show which stocks had the strongest short-term momentum.
No. This page is an informational ranking of stocks that have already gone up during May 2026. It does not make buy, sell, or hold recommendations and should be used as a research starting point, not financial advice.
The ranking shows where price strength is concentrated during May 2026. Comparing the top gainers by sector, market cap, and recent catalysts can help identify momentum themes and market rotation without implying that any listed stock is a recommendation.
4,275 companies with a market capitalization above $100 million traded on NYSE, Nasdaq and NYSE American, each with at least one trading day inside May 2026. One close inside the month is enough to qualify, so a company that listed during the month is ranked on the part of it that it traded.
The five highest-gaining companies in May 2026 sit in Industrials, Technology and Healthcare, with the leader HYLN in Industrials. That describes the top of this list, not a sector ranking; the market-context strip under the table reports the median move of each sector's ranked companies.
Each gain runs from the last split-adjusted close of the previous month to the last close of the month. A company whose trading history begins inside the month is measured from its first close.
This page ranks stocks by their full-month performance in May 2026. For today's top stock gainers, real-time stock movers, and the most active stocks right now, visit our Momentum Scanner, which tracks live intraday activity across US-listed symbols.
Monthly performance rankings reveal short-term momentum patterns and help identify stocks experiencing rapid price movements:
Researching one of this month's top movers? Use our Stock Return Calculator to review historical performance, or the Position Size Calculator to model position sizing and risk before making your own decision.
