The Prediction Markets

Fenerbahce Istanbul vs BC Olympiakos Piraeus

Starts in 6 hKickoff
Traded
$6K
Venues
Polymarket, Kalshi
Prices updated
just now
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What the markets expect

BC Olympiakos Piraeus 55.6%

Next is Fenerbahce Istanbul at 44%. Polymarket and Kalshi agree within 1 point on each matched outcome.

Odds by venue

Consensus blends each venue’s last price, weighted by how much has traded there. Best Yes price is the cheapest ask across venues, and the payout is what a winning $100 stake returns before fees. Open a row for each venue’s contract name, bid and ask, and how closely their rules match.

Prices come from our regular polls of each venue, the oldest 4 min ago. Ages are as of when this page was built.

  • Polymarket
  • Kalshi
BC Olympiakos Piraeus
55.6%
Polymarket 55.5%polled, 20s agoKalshi 56%polled, 4 min agoBest Yes 56¢ on Polymarket, $100 pays $179 (1.79x)
Polymarket
Contract
Olympiacos B.C. vs. Fenerbahce
Last price
55.5%
As of
Polled just now
Buy Yes
56¢
Sell Yes
55¢
$100 on Yes pays
$179 (1.79x)
Volume
$3K
Trade this on Polymarket
Kalshi
Contract
BC Olympiakos Piraeus
Last price
56%
As of
Polled 4 min ago
Buy Yes
56¢
Sell Yes
55¢
$100 on Yes pays
$179 (1.79x)
Volume
$921
Trade this on Kalshi
Partial parity

Payoffs match in ordinary outcomes; see the rule differences below the table.

No arbitrage: the best bid elsewhere is 55¢, at or below the cheapest ask of 56¢.

Fenerbahce Istanbul
44%
Kalshi 44%polled, 4 min agoBest Yes 44¢ on Kalshi, $100 pays $227 (2.27x)
Kalshi
Contract
Fenerbahce Istanbul
Last price
44%
As of
Polled 4 min ago
Buy Yes
44¢
Sell Yes
43¢
$100 on Yes pays
$227 (2.27x)
Volume
$2K
Trade this on Kalshi
Olympiacos B.C. (-4.5)
40.5%
Polymarket 40.5%polled, 20s agoBest Yes 41¢ on Polymarket, $100 pays $244 (2.44x)
Polymarket
Contract
Olympiacos B.C. (-4.5)
Last price
40.5%
As of
Polled just now
Buy Yes
41¢
Sell Yes
40¢
$100 on Yes pays
$244 (2.44x)
Volume
$409
Trade this on Polymarket
O/U 173.5
40%
Polymarket 40%polled, 20s agoBest Yes 41¢ on Polymarket, $100 pays $244 (2.44x)
Polymarket
Contract
O/U 173.5
Last price
40%
As of
Polled just now
Buy Yes
41¢
Sell Yes
39¢
$100 on Yes pays
$244 (2.44x)
Trade this on Polymarket

No cross-venue arbitrage right now: on every matched outcome, the best bid on one venue is at or below the cheapest ask on the other. Find markets with open spreads

Mostly the same bet: two differences

Where they differ

  • If the game is postponed: Kalshi resolves to a fair price if the game does not start within 48 hours of the scheduled time; Polymarket stays open until the game is played and resolves 50-50 only if it is cancelled with no make-up.
  • Trading closes at different times: Oct 23, 2026, 6:15 PM UTC on Polymarket and Oct 25, 2026, 6:15 PM UTC on Kalshi.
Polymarket
Polymarket resolves via:
UMA optimistic oracle, source: euroleaguebasketball.net
Kalshi
Kalshi resolves via:
Kalshi (CFTC-regulated exchange), source: the Governing League, ESPN, Sofascore
Show full rule comparison
  • If the game is postponed: Kalshi resolves to a fair price if the game does not start within 48 hours of the scheduled time; Polymarket stays open until the game is played and resolves 50-50 only if it is cancelled with no make-up.
  • Trading closes Oct 23, 2026, 6:15 PM UTC on Polymarket and Oct 25, 2026, 6:15 PM UTC on Kalshi.

Summarized from each venue’s published rules; the venue’s own rules page is the final word.

How the odds have moved

The top 3 outcomes on both venues, with the consensus between them. Hover for exact values.

  • BC Olympiakos Piraeus
  • Fenerbahce Istanbul
  • Olympiacos B.C. (-4.5)

Live prices for BC Olympiakos Piraeus

What it costs to buy Yes, what you would get selling it, and the last trade on each exchange, updating as orders change. Hover a status for timing details.

Order books

Each venue’s resting orders for the selected outcome’s Yes contract, side by side. Top of book streams live; depth refreshes every 15 seconds.

Combined depth · both venues

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Polymarket

Open on Polymarket ↗

Top of book

Connecting
Best bid
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Spread
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Best ask
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Waiting for the first live quote…

Depth · top 8 levels

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Recent trades

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Kalshi

Open on Kalshi ↗

Top of book

Connecting
Best bid
—
Spread
—
Best ask
—

Waiting for the first live quote…

Depth · top 8 levels

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Recent trades

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What your stake buys

Enter a stake to see where it buys the most after fees, using each venue’s live order book.

$
Buy

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Buys at the asks resting now (taker orders), cheapest after fees first, from order-book snapshots up to 15 seconds old. Fees: Kalshi 0.07 × price × (1 − price) per share, rounded up to the cent; Polymarket 0.05 × price × (1 − price) per share (sports rate). Fee calculator. Estimates only, not advice.

About this market

Live prediction market odds for "Fenerbahce Istanbul vs BC Olympiakos Piraeus". BC Olympiakos Piraeus leads at 55.6%. Next is Fenerbahce Istanbul at 44%. $6K has traded across 4 outcomes on Polymarket and Kalshi. The market is expected to resolve by Oct 25, 2026.

Questions

What does the consensus price mean?

It is the price of a Yes contract that pays $1 if the outcome happens. A 14¢ price means traders put the chance near 14%. Where two venues list the same outcome, we blend their last prices, weighting the venue with more trading volume more heavily (neither counts for less than a quarter). When only one outcome can win, each venue’s prices add up to a little over 100% (its margin); the fair chance removes that margin so the outcomes add up to exactly 100%.

How is the payout worked out?

A Yes contract pays $1 if it wins, so at the best ask a $100 stake buys 100 ÷ ask contracts. At 18¢ that is about 555 contracts, paying $556 (5.56x) if Yes happens. Venue fees and price slippage on larger orders are not included.

Why do the venues show different prices?

Each venue has its own traders, fees and order book. Contracts can also settle on slightly different terms, which is why each row lists how closely the rules match.

Is a price gap an arbitrage?

Only when you can buy Yes on one venue below what someone pays for Yes on the other, after fees, and both contracts settle the same way. We show the executable bid and ask so you can check.

How fresh are these prices?

Venue prices refresh every few minutes, and the order book and live quotes stream continuously. Each venue’s card shows when we last observed it.

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