Will GameStop acquire eBay?

Platform comparison

Market context

GameStop has launched an unsolicited $55.5 billion bid to acquire eBay, offering $125 per share in a 50% cash and 50% stock mix, yet the market currently prices a successful takeover at only 13% on Polymarket. This low probability reflects the deal’s non-binding nature and the substantial hurdles it faces, including financing validation, regulatory review, and eBay board engagement, despite Ryan Cohen’s offer to lead the combined entity. On-chain, the contract trades in USDC on Polygon using conditional tokens, where buyers speculate on the official announcement of the merger before the 31 December 2026 settlement deadline.

Historically, such high-premium, unsolicited bids from retailers with modest market caps—like GameStop’s $12 billion valuation against eBay’s $55.5 billion target—often stall without board acceptance or shareholder backing. Comparable cases show that even with a 46% premium and a “highly confident” financing letter from TD Securities for up to $20 billion, deals collapse if the target firm rejects the proposal or if regulatory bodies block the transaction. The market reaction to GameStop’s bid has been speculative, repricing GME stock around strategic reset optionality rather than deal certainty, as noted in recent analysis by Reuters.

Traders should monitor eBay’s board response, any potential tender offer from GameStop, and progress on securing definitive financing commitments. Key catalysts include whether Cohen escalates to a shareholder meeting or applies public pressure, as analysts suggest these are his most viable next moves following eBay’s initial rejection. Recent reporting from Reuters confirms that Cohen may initiate a tender offer or convene a shareholder meeting, but GameStop’s current derivative-based economic exposure of 6% lacks the voting rights needed to force a special meeting without further physical execution of contracts.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Kalshi UK, which mirrors the Polymarket order book directly.

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

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 Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

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 Kalshi UK trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.