US top stock gainers August 4 2026 biggest jump Autonomix Medical

Autonomix Medical, Inc. (AMIX) surged 195.89% in pre‑market trading on August 4 2026, making it the day’s biggest percentage mover and pushing the Nasdaq 100 up 2.82% and the S&P 500 1.51% higher [4].

What drove the move

The pre‑market list shows AMIX leading with a 195.89% jump, followed by Quanome Technologies (+146.82%) and Adagio Medical (+106.52%) [4]. The surge coincided with a broader rally in U.S. equity indexes, where the Nasdaq 100 posted its strongest gain of the day at 2.82%, the Dow Jones rose 1.75%, and the Russell 2000 added 1.60% [4]. No specific catalyst is cited in the source; the data simply reflects the price spikes reported for the session.

Market context

The same day’s pre‑market gainers list also includes a 118.15% rise in TNL Mediagene (TNMG) and a 53.37% jump in Ensysce Biosciences (ENSC) [2]. Across the broader market, the S&P 500, Nasdaq 100 and Dow all posted gains above 1%, indicating a bullish tone that typically lifts Indian indices at the open, according to the US‑India market link description [1]. The strong U.S. session therefore serves as a “global cue” for overseas markets, especially for sectors tied to U.S. tech performance such as Indian IT firms.

What to watch

• Upcoming earnings releases from the top gainers, particularly AMIX, to see if the price jump is supported by fundamentals.
• The next U.S. macro data point (e.g., CPI or employment) that could confirm or reverse the current equity rally.
• Indian market open on the same day; a strong U.S. close often translates into higher Nifty and Sensex openings [1].

The extraordinary pre‑market rise of Autonomix Medical underscores how single‑stock spikes can lift major tech‑heavy indexes, while the broader equity gains set the tone for global markets that track U.S. performance. The sustainability of these moves will hinge on forthcoming corporate and macro data.