Alphabet's blockbuster Q1 2026 earnings release on April 29—delivering 22% revenue growth to $109.9 billion, 81% net income surge to $62.6 billion, and 63% Google Cloud expansion—ignited a nearly 10% share price rally on April 30, adding $421 billion to its market cap and solidifying its runner-up status behind NVIDIA's $4.85 trillion valuation. At $4.62 trillion, Alphabet commands a commanding 16% lead over third-place Apple ($3.98 trillion), with Microsoft, Amazon, Tesla, and Saudi Aramco trailing far behind, driving Polymarket's 100% implied probability consensus among capital-backed traders. Realistic challenges would require an extraordinary intraday reversal, such as Alphabet dropping sharply or a competitor surging past its level before market close today, scenarios deemed improbable given the momentum and limited trading window.