What Happened
Arm Holdings (ARM) is facing a US Department of Justice antitrust investigation into its chip technology licensing business, according to Bloomberg News. Arm, which licenses its processor architecture to virtually every major chipmaker including Nvidia, Apple, and Qualcomm, saw its shares come under immediate pressure on the news. The Nasdaq — heavily weighted toward semiconductor and tech names — faces a potential overhang as the probe adds regulatory uncertainty to the sector.
Key Levels to Watch
Nasdaq Support: The Nasdaq holds near-term support at 18,800 and secondary support at 18,400. A break below 18,400 would signal a deeper correction is underway.
Nasdaq Resistance: Resistance sits at 19,200 and the recent swing high near 19,650. Bulls need a clean break above 19,200 to regain momentum.
Nvidia (NVDA) Support: Nvidia — arguably the most exposed large-cap to Arm’s architecture — holds support at $118 and $112. Resistance is at $128 and $135.
Technical Picture
The Nasdaq remains in a medium-term uptrend above its 50-day moving average (~18,600), but momentum has softened. RSI on the daily chart sits around 52 — neutral territory — suggesting the index is neither overbought nor oversold. A sustained drop below the 50-day MA would shift the short-term trend to bearish. Nvidia’s chart shows a similar structure, trading just above key moving average support but lacking a strong catalyst to push higher near-term.
What Traders Are Watching
- Whether Nasdaq holds the 18,800 support level on any selloff driven by the antitrust headline.
- Nvidia’s reaction at the $118 support — a break lower could drag other semiconductor names including AMD and Broadcom.
- Any official DOJ statement confirming or expanding the scope of the Arm probe, which could accelerate selling in chip-exposed stocks.
- ASX-listed tech and mining tech plays may see sympathy weakness if Wall Street sells off on the news.
Bias
Bearish short-term for semiconductors. Antitrust probes inject uncertainty, and uncertainty kills momentum. Until the scope of the Arm investigation becomes clearer, traders should expect choppy, defensive price action across Nasdaq-listed chip stocks. Caution is warranted on long positions in the semiconductor space.
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