Question 1

What is the current probability for "S&P 500 (SPY) closes above ___ on May 28?"?

Accepted Answer

pdata aggregates live probability data for "S&P 500 (SPY) closes above ___ on May 28?" from polymarket. See the markets list on this page for current values, refreshed continuously.

Question 2

When does this market resolve?

Accepted Answer

This event resolves on 5/28/2026.

Question 3

How is the probability calculated?

Accepted Answer

pdata reads the latest market prices directly from polymarket's public API and normalizes them to a 0-100 probability scale. See https://pdata.world/methodology for details on per-platform conventions.

Question 4

Where can I get this data programmatically?

Accepted Answer

The JSON endpoint is https://api.pdata.world/api/v1/events/polymarket/530532. An MCP server with 9 tools is available at https://api.pdata.world/mcp. Full agent guide: https://pdata.world/agents.md.

S&P 500 (SPY) closes above ___ on May 28?

Markets

$725

$730

$740

$745

$750

$755

$765

$770

$775

$735

$760