Wall Street spent May watching Micron Technology Inc. (NASDAQ:MU) rally toward a market value of roughly $850 billion on the strength of artificial intelligence memory demand.
Below the headlines, a quieter move was underway.
The seven best-performing stocks in the Russell 2000 each more than doubled Micron’s return in a single month.
The May Small-Cap Leaderboard
The table below ranks the seven Russell 2000 names by month-to-date performance.
| Company | Month-To-Date Return |
|---|---|
| Hyliion Holdings Corp. (NYSE:HYLN) | +213.6% |
| agilon health, inc. (NYSE:AGL) | +209.1% |
| Rackspace Technology, Inc. (NASDAQ:RXT) | +184.3% |
| Entravision Communications Corp. (NYSE:EVC) | +161.0% |
| NextNRG, Inc. (NASDAQ:NXXT) | +132.5% |
| Innodata Inc. (NASDAQ:INOD) | +126.1% |
| Ambiq Micro, Inc. (NYSE:AMBQ) | +117.9% |
What Actually Drove Each Move?
Each of the seven rallies had a specific trigger, and most of them landed in the first two weeks of May.
Here is the catalyst behind each name.
- Hyliion Holdings Corp.: Two catalysts, two legs. Hyliion reported on May 12 with revenue up 479% year over year and a narrower net loss, and the stock jumped roughly 30% on the print as the company confirmed it had cleared UL certification testing for its KARNO Power Module. The second leg came late in the month: the U.S. Navy selected the KARNO platform for power trials on the unmanned USX-1 Defiant vessel, and the stock surged another 40% in the days that followed, trading near $6. An earnings pop, then a defense headline on top.
- agilon health, inc.: The senior-care company reported stronger first-quarter profitability and raised its full-year 2026 sales guidance, a combination that reversed a long stretch of weak sentiment. The stock gapped up 117.8% the next session, opening near $44 and closing above $60. It did not stop there. Shares climbed for most of the rest of the month, reaching the mid-$80s. Deutsche Bank upgraded the stock to Buy from Hold during the month.
- Rackspace Technology, Inc: Rackspace reported on May 6, and the stock posted back-to-back daily gains near 55% in each of the two sessions that followed, lifted by a swing to first-quarter profit and a multi-year AI infrastructure partnership with Advanced Micro Devices, Inc. (NASDAQ:AMD) announced on May 7. With roughly 21% of its float sold short heading into the news, the move was amplified by short covering. Shares ran from roughly $2.50 to above $7.50 in days. The retracement was just as sharp: by late May the stock had fallen back near $4.
- Entravision Communications Corporation:The media and ad-tech company reported first-quarter results on May 5 showing revenue up 114% year over year to about $197 million and a return to profitability. The gain was driven by its Advertising Technology and Services segment, where revenue rose 204%. Management also pointed to the 2026 political advertising cycle as a coming tailwind. Shares rallied 94% in the post-earnings session and continued to drift higher thereafter.
- NextNRG, Inc.:The AI-driven energy and mobile-fueling company reported that April 2026 was the highest single revenue month in its history, with monthly revenue of roughly $21 million. The move is best read as a sharp rebound: the stock remains down about 41% year to date, and its financing leans on convertible notes that can dilute shareholders.
- Innodata Inc.:The data-engineering supplier reported first-quarter results on May 7 with revenue up 54% year over year and lifted its full-year 2026 growth target above 40%. The stock gapped 86% higher on the print and extended through the month. Wedbush raised its price target to $100 from $80 the following week, the clearest analyst endorsement in the group.
- Ambiq Micro, Inc.: The ultra-low-power chipmaker reported first-quarter net sales up 59% year over year on May 12, with more than 80% of units shipped running AI algorithms on the device. Management guided second-quarter sales higher still.
Recent Comments