Welcome to the Stocktwits Top 25 Newsletter this week!

The Stocktwits Top 25 reports the 25 best-performing stocks in the S&P 500, Nasdaq 100, and Russell 2000 year to date and tracks their performances over time. To help you understand this data further, check out our FAQ page, and feel free to reach out if you have questions!

Here are the Stocktwits Top 25 Lists for this week:

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📋 Small-Cap Watchlist

This week’s Russell momentum screen is AI supply-chain plumbing, one biotech data bomb, and two warning labels.

$ICHR ( ▲ 3.28% ) : Ichor Holdings, $3B cap: This week’s top dawg jumped from #14 to #6, up +38% WTD and +371% YTD. Ichor makes subsystems for semiconductor manufacturing equipment, and its earlier guide called for sequential growth through 2026 tied to high-bandwidth memory, advanced logic, and packaging. Risk: it is still loss-making on a trailing basis, so the next guide has to carry the chart.

$UCTT ( ▲ 3.88% ) : Ultra Clean, $4.9B cap: Ultra Clean jumped from #15 to #7, up +33% WTD and +330% YTD. The company supplies critical subsystems and services to chip-equipment customers, which puts it in the same AI fab-spend lane as Ichor. Risk: the stock has already outrun the small-cap label, and expectations now assume multi-year revenue acceleration.

$TNGX ( ▲ 3.76% ) : Tango Therapeutics, $4.5B cap: New at #18, Tango ripped +53% WTD after early pancreatic cancer data showed responses in 11 of 12 evaluable patients. That is the cleanest non-AI catalyst on the board. Risk: the trial was small and uncontrolled, so Phase 3 is where the trade gets real.

$NVTS ( ▲ 5.31% ) : Navitas Semiconductor, $5.5B cap: Navitas dropped from #12 to #21, down -6.7% WTD, despite the Nvidia MGX power-delivery story still pulling in 25.5k watchers. Risk: analysts still see 2026 revenue below 2025, while the stock trades like the 2028 ramp already happened.

$AAOI ( ▼ 2.16% ) : Applied Optoelectronics, $13.6B cap: Applied Optoelectronics slid from #2 to #4, down -4.5% WTD, after a monster AI optics run. The 800G transceiver ramp is still the bull case. Risk: its $1B 2026 revenue target leaves no room for another customer or firmware hiccup.

Next week’s swing factor: The June 16-17 Fed meeting. If rate volatility comes back, the unprofitable AI suppliers and biotech momentum names get tested first.

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