SoftBank shares surge 12 per cent as investors flock to AI stocks after Nvidia's gains

SoftBank Group’s shares continued their rally, rising 12 per cent at the close of trading, in step with a broader global tech rally triggered by a surge in Arm Holdings’ shares over the previous two sessions on U.S. exchanges. The rise was driven as investors piled into Artificial Intelligence (AI) stocks alongside Nvidia’s earnings momentum. SoftBank has significant holdings in OpenAI, Arm Holdings and T-Mobile US. OpenAI’s shares, which have been steadily climbing, have encouraged investors to deploy capital there. It is understood that SoftBank invested more than $30 billion and booked related gains of about $45 billion in the fiscal year ending March 2026. SpaceX plans its initial public offering to the public, anticipated to occur on 11 June 2026 on Nasdaq. OpenAI is highly anticipated, as discussions about a potential IPO continue. OpenAI’s IPO could potentially supplant Berkshire Hathaway, the multinational holding company owned by Warren Buffett. “A large number of technology IPOs are coming soon, and traders expect these IPOs will push Warren Buffett off the first-day trade” CNBC reported. SpaceX was valued at $1.25 trillion in February 2026, and Polymarket traders estimate there is a 56 per cent chance that the stock will close above $2.2 trillion on its first trading day. OpenAI was last valued at $852 billion, and traders estimate there is a 65 per cent chance that its stock ends above $1.4 trillion on its first public trading day. Traders estimate there is a 47 per cent chance that Anthropic ends above $1.8 trillion on its first day of public trading.