TOTAL VOLUME:

$134.1b

24H VOL:

$141,541,542

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,440,096,988

406,065

Markets across

30,522

events

MATCHED EVENTS:

2,692

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

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Pro Baseball: 40/40 Season
kalshi

Pro Baseball: 40/40 Season

Volume:
$51,501

1+ players with a 40+ home runs and 40+ steals season

 - Kalshi

1+ players with a 40+ home runs and 40+ steals season - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Sep 28, 2026

Closed: Sep 24, 5:58 PM EST

kalshi

Kalshi

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

1+ players with a 40+ home runs and 40+ steals season

View
100%
Yes 100¢No 0¢
100¢
N/A
$40,844
N/A
N/A
$20,157
2mo 2d
Yes
kalshi

2+ players with a 40+ home runs and 40+ steals season

View
0%
Yes 0¢No 100¢
100¢
N/A
$7,070
N/A
N/A
$3,827
2mo 2d
No
kalshi

3+ players with a 40+ home runs and 40+ steals season

View
0%
Yes 0¢No 100¢
100¢
N/A
$3,587
N/A
N/A
$1,518
2mo 2d
No
Total markets: 3

Description

This event tracks whether individual baseball players achieve the rare feat of recording seasons with both 40+ home runs and 40+ stolen bases during the 2026 Pro Baseball regular season. Such dual milestone seasons are exceptionally uncommon in baseball history, as they require a player to combine both power hitting and speed on the basepaths at elite levels. The market measures how many players accomplish this achievement across the entire league during the season.

Kalshi

Individual players achieving 40 or more home runs and 40 or more stolen bases during the 2026 Pro Baseball regular season will be counted. Markets resolve to Yes based on whether the total number of players accomplishing this feat reaches or exceeds specific thresholds: 1, 2, or 3 players.

Frequently asked questions

On Kalshi, the dashboard for the 40/40 season market displays the current price, price history, and 24-hour trading volume. Currently, volume is $0 with a total volume of $51,501. The dashboard allows you to visualize how traders are assessing the likelihood of at least one player achieving 40 or more home runs and 40 or more stolen bases in a single season. You can also see the historical price movements, providing insight into how sentiment has shifted over time as news and player performance updates emerge.

It's common to see differences between prediction market probabilities and those offered by sportsbooks. Sportsbooks often incorporate a 'vig' or commission into their odds, which isn't present in a prediction market like Kalshi. This can lead to prediction market prices being more efficient indicators of true probabilities, though sportsbooks may adjust their lines more quickly based on breaking news. While direct comparisons aren’t always straightforward, examining both can provide a more comprehensive understanding of expectations surrounding this market.

This market resolves around Dec 1, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. Specifically, the resolution will depend on official MLB statistics tracking whether any player meets the criteria of recording 40 or more home runs and 40 or more stolen bases in a single Major League Baseball season. The official MLB statistics will serve as the basis for determining the outcome of this market, ensuring a transparent and verifiable resolution process.