On September 9, it was reported that Microsoft has reached a multi-year agreement with the artificial intelligence infrastructure group NEBIUS to acquire AI cloud computing capabilities from this technology company, with a transaction value of up to $19.4 billion. This news was announced after the U.S. stock market closed on Monday, leading to a surge in NEBIUS's stock price, which rose by over 60% at one point. Should investors still chase after NEBIUS's surge?