PolymarketOtherDevelopingUpdated 9m ago

Will Apple be the largest company in the world by market cap on December 31?

As of Oct 16, 2026, 3:10 AM ET, Polymarket priced this market at 29.4% (down from 29.9% 24 hours earlier). It had $109.7K traded in the past 24 hours, $86.1K of order-book liquidity and a bid-ask spread of 0.9 pts. probcast.co rates the support behind this price as strong.

Market probability
29.4%
−0.5 percentage points
over 24 hours29.9% → 29.4%

Deep, easy-to-trade market — though most recent trading came from one account.

Price historyPolymarket

Source: Polymarket price history

How credible was the move?

Methodology →

Move validity

Strong

Consensus stability

Stable

Contract clarity

High

Can you trust this price?

Two different questions: how hard the price is to move, and whose trading set it.

Market capacity

How hard is it to move this price?

DeepTight spread

Order-book liquidity

$86.1K

Bid-ask spread

0.9 pts

24h volume

$109.7K

Total volume

$1.2M

It would take roughly $3.8K of buying to move the price up by ~5 pts.

Lots of money on the book and a tight spread — a single ordinary order can't move this price much.

Who's trading

Whose opinion is this price?

One account dominates
90%of the traded money came from the single largest account

Accounts

80

Trades

200

over 3 days

Largest order

$35.4K

$42.8K traded across these 200 trades (last 3 days).

One account did most of the recent trading — the price reflects that account's view more than a crowd's.

Recent trade activity$42.8K traded

From the latest trade tape (most recent 200 prints) — a live activity sample, not a lifetime total.

What this market actually measures

This market will resolve to the largest company in the world by market cap on December 31, 2026, as of market close. The resolution source for this market will be a consensus of credible reporting.

This summary shows the opening of the venue's official rules. ProbCast has not yet generated an independent plain-English interpretation for this contract — review the full rules before relying on it.

View full official resolution rules

This market will resolve to the largest company in the world by market cap on December 31, 2026, as of market close. The resolution source for this market will be a consensus of credible reporting.

What could move this market next?

  • The market's deadline arrivesDecember 31, 2026 at 11:59 PM ET

    The contract must resolve based on what has happened by this date.

Derived from the contract's own mechanics as of Oct 16, 3:19 AM ET. ProbCast does not list scheduled meetings, announcements, or data releases it cannot verify.

Advanced analysis (experimental)

Research signals — these models are still accumulating the history needed for full validation, and they can disagree with the headline read. Model confidence: high · expected error ±8 pts.

Trading normallyLegacy movement classifier: watch

What's happening

medium classifier confidence
Trading normally

Liquid, two-sided, and calm. The current price reads as settled consensus — the latest print is a reasonable summary of what the market believes.

  • Liquid, two-sided, and calm — price behaving as settled consensus

The latest price is a usable but caveated read — weigh it with the market state.

More details — reliability score, dynamics, durability
Reliability score
54Medium
Where the price path tends to go next245 observed
  • Stable consensus92%
  • Trend continuation4%
  • Choppy / mean-reverting3%

Short-term motion of the price line (~1h), distinct from the environment above — not a prediction of the final outcome.

DurabilityHigh· half-life ~4d
PredictabilityStable

Secondary read: leaning toward Quote-driven.

A read-only classification of the market environment — how much weight the current price deserves as a read of consensus. It describes conditions, never a trade.

Change (pts)1H0.06H-0.224H-0.57D-0.5

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