TOTAL VOLUME:

$134.1b

24H VOL:

$113,466,932

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,423,222,590

402,751

Markets across

30,217

events

MATCHED EVENTS:

2,632

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

BETA
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S&P 500 (SPY) closes above ___ on April 21?
polymarket
kalshi

S&P 500 (SPY) closes above ___ on April 21?

Volume:
$431,437

7,050 or above

 - Kalshi

7,050 or above - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Apr 22, 2026

Closed: Apr 21, 7:00 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

7,050 or above

View
100%
Yes 100¢No 0¢
—
N/A
$107,248
N/A
N/A
$45,674
Settled
Yes
kalshi

7,025 or above

100%
Yes 100¢No 0¢
—
N/A
$19,773
N/A
N/A
$14,321
Settled
Yes
kalshi

7,000 or above

100%
Yes 100¢No 0¢
—
N/A
$6,525
N/A
N/A
$3,237
Settled
Yes
polymarket

S&P 500 (SPY) closes above $690 on April 21?

100%
Yes 100¢No 0¢
—
N/A
$2,582
N/A
N/A
N/A
Settled
Yes
polymarket

S&P 500 (SPY) closes above $700 on April 21?

100%
Yes 100¢No 0¢
—
N/A
$2,063
N/A
N/A
N/A
Settled
Yes
polymarket

S&P 500 (SPY) closes above $680 on April 21?

100%
Yes 100¢No 0¢
—
N/A
$1,795
N/A
N/A
N/A
Settled
Yes
polymarket

S&P 500 (SPY) closes above $695 on April 21?

100%
Yes 100¢No 0¢
—
N/A
$1,366
N/A
N/A
N/A
Settled
Yes
polymarket

S&P 500 (SPY) closes above $685 on April 21?

100%
Yes 100¢No 0¢
—
N/A
$1,336
N/A
N/A
N/A
Settled
Yes
kalshi

6,975 or above

100%
Yes 100¢No 0¢
—
N/A
$25
N/A
N/A
$25
Settled
Yes
kalshi

6,925 or above

100%
Yes 100¢No 0¢
—
N/A
$22
N/A
N/A
$22
Settled
Yes
kalshi

6,950 or above

100%
Yes 100¢No 0¢
—
N/A
$3
N/A
N/A
$3
Settled
Yes
kalshi

6,625 or above

100%
Yes 100¢No 0¢
—
N/A
$1
N/A
N/A
$1
Settled
Yes
kalshi

6,650 or above

100%
Yes 100¢No 0¢
—
N/A
$1
N/A
N/A
$1
Settled
Yes
kalshi

6,675 or above

100%
Yes 100¢No 0¢
—
N/A
$1
N/A
N/A
$1
Settled
Yes
kalshi

6,700 or above

100%
Yes 100¢No 0¢
—
N/A
$1
N/A
N/A
$1
Settled
Yes
kalshi

6,725 or above

100%
Yes 100¢No 0¢
—
N/A
$1
N/A
N/A
$1
Settled
Yes
kalshi

6,750 or above

100%
Yes 100¢No 0¢
—
N/A
$1
N/A
N/A
$1
Settled
Yes
kalshi

6,775 or above

100%
Yes 100¢No 0¢
—
N/A
$1
N/A
N/A
$1
Settled
Yes
kalshi

6,800 or above

100%
Yes 100¢No 0¢
—
N/A
$1
N/A
N/A
$1
Settled
Yes
kalshi

6,825 or above

100%
Yes 100¢No 0¢
—
N/A
$1
N/A
N/A
$1
Settled
Yes
kalshi

6,850 or above

100%
Yes 100¢No 0¢
—
N/A
$1
N/A
N/A
$1
Settled
Yes
kalshi

6,875 or above

100%
Yes 100¢No 0¢
—
N/A
$1
N/A
N/A
$1
Settled
Yes
kalshi

6,900 or above

100%
Yes 100¢No 0¢
—
N/A
$1
N/A
N/A
$1
Settled
Yes
kalshi

7,100 or above

0%
Yes 0¢No 100¢
—
N/A
$95,403
N/A
N/A
$19,270
Settled
No
kalshi

7,075 or above

0%
Yes 0¢No 100¢
—
N/A
$69,419
N/A
N/A
$19,683
Settled
No
Total markets: 25 of 71

Description

This event group comprises 13 linked binary markets asking whether SPY (S&P 500 ETF) will close above various price thresholds ($680–$730 in $5 increments) on April 21, 2026. Each market resolves independently based on the official closing price for that single trading day, creating a price-ladder structure where outcomes are mutually exclusive and hierarchically ordered.

PredictionHero - Resolution Divergence Alerts (RDA)

Unified Resolution Criteria (Consistent across platforms)

All Polymarket questions in this group use identical resolution logic based on Pyth Close prices for SPY on April 21, 2026, with consistent rules for data sourcing, stock splits, and tie-breaking. Kalshi provides no conflicting rules, so the Polymarket framework governs the entire group.Primary resolution logic: Pyth Data (https://pythdata.app/explore/Equity.US.SPY%2FUSD), with fallback to primary exchange official closing price if Pyth data is unavailable.

Core resolution logic:

  • Market resolves YES if and only if SPY Close price on April 21, 2026 is strictly greater than the specified threshold price.
  • Market resolves NO if SPY Close price is equal to or less than the specified threshold price.
  • Closing price is determined by Pyth Close value of the 1-minute candle at the end of regular trading hours on the primary exchange.
  • If Pyth Close is unavailable for that candle, the last valid Pyth price during regular hours is used; if no Pyth data exists, the official exchange closing price is used.
  • In the event of a stock split or reverse split, the threshold price is adjusted proportionally and resolution uses split-adjusted prices from Pyth.
  • If SPY does not trade during the regular session, the market resolves 50-50.

Edge cases & clarifications:

  • Stock Split Adjustment: If a stock split or reverse split occurs between market creation and April 21, 2026, the threshold price will be adjusted proportionally and resolution will use split-adjusted prices as displayed on Pyth.
  • Data Unavailability Cascade: If Pyth Close for the final 1-minute candle is unavailable, the last valid Pyth price during regular hours is used. If no Pyth data exists for the entire trading day due to system outage or technical failure, the official closing price published by the primary exchange is used.
  • No Trading Session: If SPY does not trade at all during the regular session on April 21, 2026, the market resolves 50-50 rather than YES or NO.
  • Exact Price Match: If the SPY Close price equals the threshold price exactly, the market resolves NO (not YES), as the condition requires the price to be strictly above the threshold.
Timing: Resolution occurs on April 21, 2026, based on the official Pyth Close value or equivalent price source for that date. All 13 markets in the group share the same event date and resolution window.Our PredictionHero Resolution Divergence Alerts (RDA) are there to help users identify potential differences across platforms. They do not replace or supersede the official rules and description of any prediction market. Users are solely responsible for reviewing and understanding the applicable rules and resolution criteria before placing any trade or bet. If you notice a potential inconsistency, discrepancy, or error in an alert, please report it to our team so we can review and improve the accuracy of our data.