US Stock Market Today: Biggest Gainers, Losers and Most Active Stocks
The US stock market witnessed sharp volatility on March 4, 2026, with several small-cap stocks recording extreme gains and losses while large-cap technology and ETF trades dominated overall market activity.
Market data shows that Actelis Networks (ASNS) emerged as the biggest gainer of the session, skyrocketing more than 186%, making it the top-performing stock among the most advanced securities. Other notable gainers included Decent Holding (DXST) which jumped over 152%, and Firefly Neuroscience (AIFF) rising more than 126%, signaling strong speculative trading in smaller technology and biotech companies.
Jiuzhi Holdings (JZXN) also posted strong momentum with gains of around 87%, while Delixy Holdings (DLXY) climbed over 75%, rounding out the top performers of the session.
Biggest Decliners in the Market
On the downside, Cresud S.A.C.I.F. y A. (CRESW) experienced the steepest drop, plunging more than 83%, marking it as the worst performer in the session.
Other major declines included Ouster Warrants (OUSTZ), which fell nearly 74%, followed by Allurion Technologies (ALUR) dropping about 68%. Energy company Trio Petroleum (TPET) declined over 56%, while Holley Inc. (HLLY) slipped roughly 54% during the session.
Market analysts noted that such sharp declines are often linked to low liquidity, warrant movements, corporate developments, or speculative trading in micro-cap stocks.
Most Active Stocks by Trading Volume
Trading activity remained extremely high across several stocks, particularly among speculative names.
Actelis Networks (ASNS) again led the charts with more than 1.05 billion shares traded, reflecting strong retail participation. Decent Holding (DXST) followed closely with nearly 979 million shares, while leveraged semiconductor ETF Direxion Daily Semiconductor Bear 3X Shares (SOXS) recorded around 849 million shares in trading volume.
Other actively traded stocks included Mobix Labs (MOBX) and Firefly Neuroscience (AIFF), both seeing hundreds of millions of shares exchanged.
Most Active by Dollar Volume
In terms of dollar value traded, major US market leaders dominated the list.
The SPDR S&P 500 ETF Trust (SPY) recorded the highest dollar trading volume, reflecting strong institutional flows tied to broader market movements. It was followed by Invesco QQQ Trust (QQQ), which tracks the Nasdaq-100 index.
Among individual stocks, NVIDIA (NVDA) continued to attract heavy trading interest amid the ongoing AI-driven semiconductor boom. Tesla (TSLA) also posted significant trading value after rising more than 3.4%, while Microsoft (MSFT) remained among the most actively traded mega-cap technology stocks.
Market Outlook
Senior market strategists note that the combination of large institutional ETF trading and highly volatile small-cap stocks suggests a market environment where investors are balancing long-term technology investments with short-term speculative opportunities.
Analysts also point out that continued momentum in AI-related technology stocks such as Nvidia, alongside strong ETF flows into SPY and QQQ, indicates that technology and growth sectors remain the core drivers of Wall Street sentiment in 2026.
