TOTAL VOLUME:

$134.2b

24H VOL:

$126,590,312

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,439,516,703

404,175

Markets across

30,277

events

MATCHED EVENTS:

2,685

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

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Number of Series Upsets in the Conference Semifinals
kalshi

Number of Series Upsets in the Conference Semifinals

Volume:
$73,587

At least 1 series upset

 - Kalshi

At least 1 series upset - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved May 18, 2026

Closed: May 17, 11:13 PM EST

kalshi

Kalshi

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Join Kalshi and score $25 for your first trade.
Outcome
Trade
Chance %
Price
Spread
Liquidity
Volume
24h
7d
Open Interest
Ends in
Result
kalshi

At least 1 series upset

View
100%
Yes 100¢No 0¢
1¢
N/A
$38,103
N/A
N/A
$12,522
Settled
Yes
kalshi

At least 2 series upsets

0%
Yes 0¢No 100¢
1¢
N/A
$31,240
N/A
N/A
$27,171
Settled
No
kalshi

At least 3 series upsets

0%
Yes 0¢No 100¢
1¢
N/A
$4,245
N/A
N/A
$2,987
Settled
No
Total markets: 3

Description

During the 2026 Pro Basketball Playoffs second round, teams compete in playoff series where a lower-seeded or underdog team defeats a higher-seeded or favored team. The event tracks whether upsets occur during these matchups.