Ambarella is trading 4.05% lower now at $64.34, pressured by broad market weakness. - On September 23, 2026, the Nasdaq Composite is down 1.03% and the S&P 500 is down 0.65%, creating a risk-off backdrop for technology stocks. - Rising oil prices and Treasury yields are weighing on valuations. - No fresh company-specific announcement was found; recent analyst actions and partnerships predate September 23.