PolymarketAI / TechConfirmed moveUpdated 6m ago

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

As of Oct 29, 2026, 11:27 PM ET, Polymarket priced this market at 52.5% (down from 68.5% 24 hours earlier). It had $118.2K traded in the past 24 hours, $89.9K of order-book liquidity and a bid-ask spread of 1.0 pts. probcast.co rates the support behind this price as strong.

Market probability
52.5%
−16 percentage points
over 24 hours68.5% → 52.5%
Moving fast

Deep, easy-to-trade market — today's move came from a small group of accounts.

Price historyPolymarket

Source: Polymarket price history

How credible was the move?

Methodology →

Move validity

Strong

Consensus stability

Forming

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

$89.9K

Bid-ask spread

1.0 pts

24h volume

$118.2K

Total volume

$1.6M

It would take roughly $9.6K 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?

A few accounts
31%of the traded money came from the single largest account

Accounts

92

Trades

200

over 21h

Largest order

$21.4K

$70.2K traded across these 200 trades (last 21h).

A small group of accounts did most of the trading — neither one whale nor a broad crowd.

Recent trade activity$70.2K 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.

Why the odds moved

The probability fell 16.0 percentage points over the last 24 hours (68.5% → 52.5%).

No verified catalyst has been linked to this move yet. ProbCast does not attribute moves to news without evidence connecting the timing of a specific report to the repricing.

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 29, 11:32 PM 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: medium · expected error ±16 pts.

Reacting to newsLegacy movement classifier: meaningful

What's happening

high classifier confidence
Reacting to news

The price is actively repricing on real volume. The number is still moving — don't treat the latest print as settled consensus yet.

  • Probability moved 9.5 pts in ≤6h on adequate liquidity
  • Flow one-directional across 92 participants (broad, not a single order)

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

More details — reliability score, dynamics, durability
Reliability score
46Medium
Where the price path tends to go next40 observed
  • Trend continuation32%
  • News repricing30%
  • Choppy / mean-reverting17%

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

DurabilityHigh· half-life ~4h
PredictabilityStable

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-9.524H-16.07D-16.0

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