Major U.S. indices closed lower on Tuesday, with the Dow Jones Industrial Average slipping 0.25% to 52,925.15, the S&P 500 falling 0.45% to 7,503.85 and the Nasdaq dropping 1.16% to 25,818.69.

These are the top stocks that gained the attention of retail traders and investors through the day.

Space Exploration Technologies Corp. (NASDAQ:SPCX)

SpaceX shares fell 6.83% to $149.47, after trading as high as $159.30 and as low as $148.86; the stock’s 52-week range runs from $147.11 to $225.64. In the after-hours trading, the stock gained 1.14% to $151.17.

The move came as investors weighed a newly highlighted lock-up wrinkle that could let an extra batch of shares become eligible for sale if the stock stays strong into the company’s first earnings period, a setup that may raise volatility around the next catalyst. A little-known IPO clause could quietly expand the supply of stock available for trading.

Clearone Inc. (NASDAQ:CLRO)

ClearOne surged 97.71% to $13.84, reaching an intraday high of $16.50 and a low of $8.13; its 52-week span is $2.72 to $16.50. The stock gained 5.13% to $14.55 in extended trading.

Traders piled in after the company disclosed a definitive merger agreement with Cortigent, a Vivani Medical subsidiary, along with financing plans intended to support the combined business and its shift toward medtech. The merger update and the strategic pivot to medical devices fueled the sharp advance.

FuelCell Energy, Inc. (NASDAQ:FCEL)

FuelCell Energy dropped 12.68% to $25.96, with an intraday high of $29.18 and a low of $25.72; the stock’s 52-week range is $3.78 to $37.88. In the after-hours session, the stock plummeted by 16.76% to $21.61.

The decline followed a post-close selloff tied to a new $200 million offering, which added to earlier session weakness as investors locked in gains after a strong run linked to recent data-center and financing headlines. Fresh dilution concerns weighed on the stock, even as recent momentum remained notable over the past year.

Cloudflare, Inc. (NYSE:NET)

Cloudflare gained 8.60% to $268.83, trading as high as $274 and as low as $254 during the session; the stock’s 52-week range stands at $158.83 to $276.82.

The rally pushed the internet infrastructure company into the upper end of its recent range as buyers kept pressing a breakout narrative built around strong trend signals, upbeat analyst action and continued demand for security and edge-computing tools. Momentum stayed firm while the shares tested the 52-week high zone and drew fresh attention from traders.

Penguin Solutions, Inc. (NASDAQ:PENG)

Penguin Solutions fell 7.38% to $62.71, after hitting an intraday high of $65.34 and a low of $60.20; the stock’s 52-week range is $16.04 to $77.40. The stock popped 3.65% higher at $65 in extended trading.

The move came after the company reported a strong quarter with a double beat on revenue and earnings and lifted its full-year outlook again on what management described as very strong AI-driven demand. The company reported third-quarter revenue of $478.71 million, up 48% year over year, and adjusted earnings of 84 cents per share, exceeding analyst expectations on both metrics.

Penguin Solutions raised its full-year fiscal 2026 outlook, forecasting revenue growth of 22%, plus or minus 2%, up from its previous expectation of about 12%, and projected adjusted earnings of $2.60 per share, plus or minus 5 cents, citing strong customer demand driven by agentic AI.

Benzinga Edge Stock Rankings indicate SpaceX stock doesn’t rank high on Short, Medium and Long-term Price Trends.

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Disclaimer: This content was partially produced with the help of AI tools and was reviewed and published by Benzinga editors.