Alphabet is raising $84.75 billion（約14兆円） in new stock to fund its AI spending, signaling confidence in AI returns but shifting the bill to existing shareholders through dilution.

What happened: Alphabet announced a $84.75 billion（約14兆円） equity offering to raise capital for artificial intelligence investments. The company plans to spend $180 billion（約29兆円） to $190 billion（約30兆円） on AI this year alone, a shift from its past practice of funding AI through cash flow.

Why it matters: Alphabet sees positive returns from AI across its business—boosting cloud computing, helping Waymo grow, and keeping Google Search competitive. The company also reached an agreement with Apple to power its next-generation AI models with Gemini, which requires more infrastructure to support roughly 2.5 billion active iOS devices worldwide. However, the equity raise means existing shareholders will experience stock dilution, though the $84.75 billion（約14兆円） raise represents only about 2% of Alphabet's current $4.3 trillion（約690兆円） market cap.

What to watch: Alphabet's balance sheet is strong enough to take on debt instead (leverage is only 0.33 times EBITDA), so management likely judged the 2% dilution cheaper than paying interest. Investors should monitor whether these equity raises become a long-term pattern, as repeated dilution could add up significantly over time.