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 is accessible globally?

Polymarket is geo-blocked in the US/UK/EU. Kalshi is US-only. Betfair and Smarkets are UK-restricted. Robinhood Prediction Markets has a different geo footprint and routes to Polymarket's order book at 0% fees.

Are all these platforms regulated?

No. Kalshi is CFTC-regulated (US). Betfair and Smarkets are UK Gambling Commission licensed. Polymarket operates without explicit regulation — a different risk profile than a regulated sportsbook.

Which platform supports Klarna/SOFORT?

Directly: none. Polymarket accepts only USDC on Polygon. Robinhood Prediction Markets 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.

UFC 333: Alexander Volkov vs. Rizva… | Robinhoodpredictionmarkets 2026

Name: UFC 333: Alexander Volkov vs. Rizvan Kuniev (Heavyweight, Main Card)
Start: 2026-10-10T22:00:28.000Z
End: 2026-10-25T03:59:59.999Z

Platform comparison

Platform	YES odds	NO odds	Fee	KYC	Settlement
Polymarket (via Robinhood Prediction Markets) Pick polygram.ink (preferred broker)	91%	9%	0% (USDC on-chain)	No-KYC up to $1,500	USDC, auto via UMA oracle	Go to the live market →
Polymarket (direct) polymarket.com	91%	9%	0%	Geo-blocked in US/UK/EU	USDC, on-chain	Go to the live market →
Kalshi kalshi.com	—	—	Up to 7% per trade	US-only, KYC required	USD	Go to the live market →
Betfair Exchange betfair.com	—	—	2-5% commission	Full KYC from first trade	GBP / EUR	Go to the live market →
Manifold Markets manifold.markets	—	—	Play-money (mana)	None — play-money	Mana (no cash-out)	Go to the live market →

Outcome probabilities

Current market-implied probability for each outcome, from the live order book.

Outcome	Probability
O/U 0.5 Rounds	91%
O/U 1.5 Rounds	78%
O/U 2.5 Rounds	68%
Fight to Go the Distance?	66%
Fight won by decision?	65%
Decision or Draw	64%
Alexander Volkov vs. Rizvan Kuniev	54%
Fight won by KO/TKO?	32%
Ends before Round 3?	28%
Volkov to win by KO/TKO?	18%
Kuniev to win by KO/TKO?	16%
Ends before Round 2?	16%
Volkov in Round 1	9%
Kuniev in Round 1	9%
Volkov in Round 2	7%
Kuniev in Round 2	7%
Fight won by submission?	6%
Volkov in Round 3	6%
Kuniev in Round 3	6%

Market context

UFC 333: Alexander Volkov vs. Rizvan Kuniev (Heavyweight, Main Card) — current market-implied probability: 91%. This market will resolve to "Alexander Volkov" if Alexander Volkov is officially declared the winner of the fight against Rizvan Kuniev at UFC 333: Volkanovski vs. Evloev, scheduled for October 24, 20…

Live Data & Statistics

The Polymarket order book prices O/U 0.5 Rounds at 91% for "UFC 333: Alexander Volkov vs. Rizvan Kuniev (Heavyweight, Main Card)".

O/U 0.5 Rounds 91% Other 9%

Live stats load when the match begins. Current market odds are shown above. Trading volume: $117K.

Methodology

We read UFC 333: Alexander Volkov vs. Rizvan Kuniev (Heavyweight, Main Card) from four platform perspectives: Polymarket (on-chain CLOB), Kalshi (CFTC-regulated exchange), Betfair Exchange (sports book exchange), Smarkets (peer-to-peer betting exchange). Polymarket's live mid is the canonical probability; the side-by-side columns benchmark fees, KYC, settlement currency and deposit rails so you can choose the venue that fits your jurisdiction and trade size.

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

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 is accessible globally?: Polymarket is geo-blocked in the US/UK/EU. Kalshi is US-only. Betfair and Smarkets are UK-restricted. Robinhood Prediction Markets has a different geo footprint and routes to Polymarket's order book at 0% fees.
Are all these platforms regulated?: No. Kalshi is CFTC-regulated (US). Betfair and Smarkets are UK Gambling Commission licensed. Polymarket operates without explicit regulation — a different risk profile than a regulated sportsbook.
Which platform supports Klarna/SOFORT?: Directly: none. Polymarket accepts only USDC on Polygon. Robinhood Prediction Markets 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.

Alex ChenPrediction Market Analystand

Jordan LeeSports Prediction Reporter

Trade UFC 333: Alexander Volkov vs. Rizvan Kuniev (Heavywe… on Robinhood Prediction Markets

Live order book, 0% fees, USDC settlement in seconds.

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UFC 333: Alexander Volkov vs. Rizvan Kuniev (Heavyweight, Main Card)

Platform comparison

Outcome probabilities

Market context

Live Data & Statistics

Methodology

Resolution & payout

FAQ

Trade UFC 333: Alexander Volkov vs. Rizvan Kuniev (Heavywe… on Robinhood Prediction Markets

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