Jensen Huang hosted a “Quantum Day” during GTC, Nvidia’s annual developers conference, where experts shed light on quantum-computing progression. The Nvidia CEO said quantum computers will solve problems more important than just faster food deliveries and more powerful spreadsheets.

Jensen Huang caused quantum computing stocks to crash after saying he believed quantum technology wouldn’t be very useful for the next 15 to 30 years. Huang is now making amends by launching Nvidia’s first Quantum Day,

Nvidia (NVDA) chief executive Jensen Huang apologized for tanking quantum computing stocks earlier this year when he said the technology’s usefulness is still decades away — but one analyst says he’s actually right.

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Nvidia's Quantum Day gave quantum computing companies a shot at the spotlight. However, without any big announcements from the firms, investors mostly used the event as a chance to sell the recently high-flying stocks.

Rigetti Computing fell 9% yesterday and is down another 3% in early morning trading. D-Wave Quantum plunged 18% and is down this morning 4.6%. Quantum Computing and IonQ were down 12% and 9% yesterday, respectively, and are down another 10% and 1%, respectively, today.