Jensen Huang's public backing of optical networking over copper infrastructure triggered a sector-wide rotation, with optical suppliers MRVL (+29.7%), COHR (+16.0%), LITE (+13.5%), GLW (+12.5%), and CIEN (+8.4%) surging alongside AI hardware plays AMAT, ON, QCOM, and HPE (+18.5% on blowout Q2 earnings). Conversely, software and services took fire—INTU crashed 8.4% on a Goldman Sachs downgrade, while TRI (-8.2%), WDAY (-5.5%), PLTR (-5.1%), NOW (-5.5%), and ACN (-5.4%) fell on AI margin concerns and sector rotation. Crypto and fintech also weakened as Bitcoin dropped 6% to $67K, dragging MSTR (-10.4%), COIN (-5.2%), CBOE (-9.1%), and NDAQ (-5.5%) lower.
Buy:** Optical infrastructure plays (COHR, LITE, GLW) and AI hardware suppliers (AMAT, ON, QCOM) remain in structural uptrends on tangible demand catalysts; HPE offers near-term momentum on earnings beat. **Sell/Avoid:** Enterprise software names (INTU, WDAY, PLTR, NOW) face near-term headwinds from AI disruption narratives and valuation compression; wait for stabilization before re-entering. **Hold:** Broad market (SPY/QQQ) shows resilience; sector rotation favors infrastructure over applications.