Nvidia's stock soared 18% in April 2026, driven by a surge in call options on AI and semiconductor stocks. This options activity has created a feedback loop, pushing prices higher but also setting the stage for potential volatility after the May 15 options expiry. Traders are closely watching this date, as the unwinding of bullish positions could lead to a sharp reversal. The rally has also impacted the crypto market, with TAO, the native token of the Bittensor AI network, nearly doubling in price. Institutional interest is growing, with Polychain investing $200 million in TAO and both Grayscale and Bitwise filing for spot TAO ETFs. However, Nvidia's upcoming earnings report and broader economic factors, such as rising oil prices, could influence market dynamics, posing risks to both stock and crypto investors.