Largest Company end of July?

Platform comparison

Market context

The underlying event is which listed company has the highest market capitalisation at the close on 31 July 2026, with the market resolving to that end-of-day ranking on the consensus of credible reporting. Current data show NVIDIA still ahead of Apple, with NVIDIA around $4.8tn-$5.1tn and Apple around $4.6tn-$4.9tn, so the 73% crowd probability reads as a fairly strong but not lock-tight view that the lead survives into settlement.[1][2][9][10]

Historically, this kind of market has tended to track a narrow leadership set rather than broad equity moves: the top spot has lately rotated between NVIDIA and Apple, and Microsoft remains close enough that a sharp multi-day move can matter. One useful way to run it programmatically is to monitor live market-cap feeds and flag rank changes only when the gap between the top names is smaller than the expected move from one trading session, since a bot or conditional order tied to those thresholds is more informative than a static price view.[3][6][9][13]

For catalysts, watch earnings, guidance, and any split or index-reweighting effects from NVIDIA, Apple, and Microsoft, plus major macro or rate surprises that change duration-sensitive valuations. Recent reporting has already shown Apple briefly regaining the lead from NVIDIA before NVIDIA pushed back ahead, which underlines how quickly this can flip when a mega-cap rerates; a watcher with alerts, copy-trading, or scheduled checks should prioritise the closing market-cap snapshot rather than intraday headlines.[3][18]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Largest Company end of July? across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

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

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Polymarket Review UK. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.

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?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Polymarket Review UK trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.