Will GameStop acquire eBay?

Platform comparison

Market context

GameStop has submitted a non-binding, unsolicited proposal to acquire eBay for approximately $55.5 billion, valuing each share at $125 in a 50% cash and 50% stock mix, with CEO Ryan Cohen prepared to bypass eBay’s board and appeal directly to shareholders if the offer is rejected[1][2]. The bid represents a 46% premium to eBay’s unaffected closing price and includes a commitment letter from TD Bank for $20 billion in debt financing, though the transaction remains subject to regulatory review, financing finalisation, and shareholder approval[2][5].

Historically, unsolicited mega-bids in the e-commerce sector, such as eBay’s own acquisition of Skype for $3.1 billion in 2005, often face intense scrutiny and board resistance, with many failing to materialise despite high premiums[9]. The current 13% implied probability reflects market scepticism about the feasibility of a $55.5 billion leveraged buyout by a video-game retailer, particularly given GameStop’s recent 10% stock decline and the non-binding nature of the proposal[2][6]. Traders should monitor eBay’s board response, TD Bank’s financing confirmation, and any regulatory filings, as an official announcement—even if the deal later stalls—would resolve the market to “Yes”[1][4]. Recent reporting from ABC News confirms eBay’s board is reviewing the proposal while advising shareholders to take no immediate action, a key dependency for deal progression[4].

On platforms like Polymarket, Kalshi, Betfair, and Smarkets, divergence arises in how this probability is expressed: Polymarket and Kalshi use decimal odds (e.g., 7.69 for 13%), while Betfair and Smarkets often quote implied probability directly; fee structures also vary, with Polymarket charging no KYC but higher gas fees, whereas Kalshi requires US KYC but offers lower trading fees, and Betfair/Smarkets impose commission on winnings. These structural differences can shift liquidity and pricing efficiency for this specific market across exchanges.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares Will GameStop acquire eBay? specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. The live probability is the Polymarket mid; the comparison columns summarise each venue's fee structure, KYC, settlement currency and payment rails. Every CTA routes to Kalshi Alternative UK, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Settlement is the biggest difference between the four platforms: Polymarket on-chain in USDC (instant), Kalshi USD via CFTC (T+1), Betfair and Smarkets in local currency via bank withdrawal (T+1 to T+3). On-chain settlement clears in minutes — the fastest payout path of the four.

FAQ

Polymarket vs Kalshi — which is better?

Depends on your location. Kalshi is CFTC-regulated, US-only with full KYC. Polymarket is global, on-chain, no KYC up to $1,500. Polymarket has ~10x higher liquidity but higher regulatory risk.

What does Polymarket cost vs Kalshi?

Polymarket: 0% fees, only Polygon network costs (~$0.01/trade). Kalshi: up to 7% per trade plus spread. For high-frequency traders, Polymarket is dramatically cheaper.

Which platform has the deepest liquidity?

Polymarket — by a wide margin. Top markets reach $50-500M volume, Kalshi ~$200M cumulative, Betfair similar. Deeper liquidity means your trade moves the quote less.

What about Smarkets as an alternative?

Smarkets is a UK betting exchange with a lower default commission (2%) than Betfair. Liquidity on political markets is below Polymarket, comparable to Kalshi. Geo-blocked in many jurisdictions.

Which platform supports Klarna/SOFORT?

Directly: none. Polymarket accepts only USDC on Polygon. Kalshi Alternative UK offers a fiat on-ramp via Klarna or SOFORT (DE/AT/CH) and converts internally to USDC for the Polymarket order book. T+1 processing.