PolymarketAI / TechDevelopingUpdated 7m ago

AI bubble burst in 2026?

As of Oct 18, 2026, 9:59 PM ET, Polymarket priced this market at 7.8% (up from 7.0% 24 hours earlier). It had $28.4K traded in the past 24 hours, $37.1K of order-book liquidity and a bid-ask spread of 0.1 pts. probcast.co rates the support behind this price as moderate.

Market probability
7.8%
+0.8 percentage points
over 24 hours7.0% → 7.8%

Thin market where small orders can move the price, with broad trading across many accounts.

Price historyPolymarket

Source: Polymarket price history

How credible was the move?

Methodology →

Move validity

Moderate

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?

ThinTight spread

Order-book liquidity

$37.1K

Bid-ask spread

0.1 pts

24h volume

$28.4K

Total volume

$2.5M

It would take roughly $2.2K of buying to move the price up by ~5 pts.

Little money on the book — a modest order can move this price, so treat swings with care.

Who's trading

Whose opinion is this price?

Broad participation
19%of the traded money came from the single largest account

Accounts

103

Trades

200

over 18 days

Largest order

$531.3

$4.9K traded across these 200 trades (last 18 days).

Many independent accounts traded — the price reflects a crowd, not one trader.

Recent trade activity$4.9K 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 "Yes" if the AI industry experiences an industry downturn by the specified date, 11:59 PM ET. Otherwise, this market will resolve to "No".

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 "Yes" if the AI industry experiences an industry downturn by the specified date, 11:59 PM ET. Otherwise, this market will resolve to "No". For the purposes of this market, the AI industry will be considered to have experienced an industry downturn once at least three of the following events have occurred within 90 days of this market's specified timeframe: - NVIDIA Corporation (NVDA) closing stock price is down 50% from its all-time high. - iShares PHLX Semiconductor ETF (SOXX) closing stock price is down 40% from its all-time high. - OpenAI, Inc. or Anthropic PBC declares bankruptcy. - OpenAI, Inc. is acquired. - H100 rental price falls to $1.00 or lower for five consecutive days, as shown on the SiliconData Silicon Index at: https://www.silicondata.com/products/silicon-index. - Major AI Hardware Supplier Collapse: Taiwan Semiconductor Manufacturing Company Limited (TSM), ASML Holding N.V. (ASML), Broadcom Inc. (AVGO), Arista Networks, Inc. (ANET), or Super Micro Computer, Inc. (SMCI), closing stock price is down 50% from its all-time high. This market may resolve immediately once three conditions have been met within 90 days of the specified timeframe. This market will not resolve to "Yes" until three conditions have been met, regardless of reporting of an industry downturn or similar claims. The primary resolution source will be official information from the respective companies and listing exchanges; however, a consensus of credible reporting will also be used.

Resolution source: silicondata.com

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.

  • Confirmation at the resolution source (silicondata.com)

    The rules name this source as the basis for settlement.

Derived from the contract's own mechanics as of Oct 18, 10:07 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: low · expected error ±18 pts.

Thin marketLegacy movement classifier: watch

What's happening

medium classifier confidence
Thin market

Thin book and/or wide spread. Small orders can move this price disproportionately, so any single print is noisy and easily overread.

  • Thin book and/or wide spread.

Read with caution —Read the latest price with caution; conditions make it an unreliable summary right now.

More details — reliability score, dynamics, durability
Reliability score
24Low
Where the price path tends to go next1732 observed
  • Choppy / mean-reverting98%
  • Stable consensus2%

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

DurabilityHigh· half-life ~7h
PredictabilityStable

Secondary read: leaning toward Trading normally.

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-2.624H+0.87D+0.8

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