Largest Company end of June?

Platform comparison

Active sub-markets

Market context

The real-world event is straightforward: on 30 June 2026, the global market will close to determine which company holds the highest market capitalisation. Current data shows NVIDIA at $4.663 trillion, leading Apple at $4.167 trillion, with the 99% YES probability reflecting NVIDIA’s entrenched dominance in the semiconductor and AI infrastructure sectors[1].

Historically, market-cap leadership has shifted slowly, often over years, with Apple and Microsoft holding the top spot for extended periods before NVIDIA’s surge in 2023–2024[4][6]. Comparable cases show that once a company establishes a $500 billion lead, it rarely loses the title without a major sector disruption or earnings collapse, which explains the near-certainty implied by the market[1].

Traders should monitor NVIDIA’s quarterly earnings releases, semiconductor export policy changes, and any announcements regarding AI chip demand dependencies, as these are the primary catalysts for valuation shifts[2]. Recent reports from Yahoo Finance highlight Tesla and Meta as potential challengers, though their market caps remain significantly below NVIDIA’s current level, suggesting limited immediate threat to the leadership position[2]. Programmatic approaches to this market would involve conditional orders triggered by earnings beats or misses, with copy-trading bots set to mirror institutional moves in semiconductor stocks.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

What does it cost to trade on PolyGram?

Zero. PolyGram routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, PolyGram triggers a quick verification flow that finishes in minutes.