Trader consensus on Polymarket prices Alphabet with a 77% implied probability of holding third-largest market capitalization by April 30, 2026, reflecting its current $3.56 trillion valuation—solidly behind Nvidia ($4.31T) and Apple ($3.76T) but $787 billion ahead of Microsoft ($2.78T). This positioning stems from Alphabet's robust 93% market cap expansion over the past year, contrasting Apple's -7.3% year-to-date decline amid iPhone sales softness and services growth moderation. Apple's 21.5% odds capture scenarios where Alphabet closes the $199 billion gap to second place via AI-driven cloud momentum. Nvidia's slim 1.1% chance underscores its dominant lead, while others trail far behind due to valuation gaps. With resolution imminent, Q1 earnings from these megacaps loom as key catalysts.