Will Apple be the second-largest company in the world by market cap on June 30?

Prediction markets put the probability at 56%: Will Apple be the second-largest company in the world by market cap on June 30. Currently, markets are divided (56% YES, 44% NO). AI demand, earnings optimism lift tech giants' market value in May | Reuters.

What’s Happening

The race for the apple second-largest company in the world by market cap on june 30 tightened in late May as AI-driven tech rallies reshuffled the megacap leaderboard. According to Reuters reporting on June 2, 2026, the world's most valuable technology companies — with the exception of Alphabet — added billions in combined market value during May, with Apple, Micron Technology and Samsung Electronics among the names lifted by upbeat earnings outlooks and sustained demand for AI accelerators. Nvidia currently holds the No. 1 slot by market capitalization, displacing Apple at the top, while the No. 2 position has rotated between Apple, Microsoft and Alphabet through Q2 2026 trading sessions. [Reuters, Jun 2]

Apple disclosed on June 4, 2026 that its App Store facilitated more than $1.4 trillion in developer billings and sales during calendar-year 2025, up from $1.3 trillion the prior year, with roughly 90% of that volume flowing without an Apple commission. The disclosure, timed ahead of WWDC 2026, reinforced services-revenue durability — a key variable underpinning Wall Street's forward earnings multiples on AAPL. Analysts tracking the apple second-largest company in the world by market cap on june 30 contest point to services growth and installed-base monetization as the primary insulators against a near-term ranking slip versus Microsoft, which trades at a similar ~$3.3-3.5 trillion valuation band. [TechCrunch, Jun 4]

The pivotal near-term catalyst is WWDC 2026 on June 8, the last keynote under outgoing CEO Tim Cook before succession to CEO-in-waiting John Ternus. Apple's January 2026 partnership with Alphabet to integrate Gemini frontier models into Siri faces its first public demonstration, after Apple Intelligence underwhelmed in 2025 and ceded the AI assistant narrative to OpenAI. A credible Siri reset could re-rate the stock through quarter-end and lock in the No. 2 position by June 30, 2026; a tepid reception risks ceding the slot to Microsoft or Alphabet, both of which posted double-digit YTD gains on enterprise AI bookings. Historical precedent: after WWDC 2024's Apple Intelligence reveal, AAPL added roughly 7% in the following two weeks before fading. [Motley Fool, Jun 2]

Traded on Polymarket — $55K Volume

Lower-volume market on Polymarket ($55K). Wider spreads expected — enter with limit orders and be aware of slippage risk. Currently 56c YES.