
Chart and changes show stored historical probabilities, not the selected live book.
Trends
Selected row: book midpoint. Other rows: stored references, possibly normalized; 24h changes use stored history.
Venue terms
Source: Polymarket
Informational venue terms only; CoinRithm paper trading uses its own rules.
Market depth · Up
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Book received (not venue quote time): —
Related Markets
Related questions for context, not a comparison of equivalent contracts.
What will S&P 500 (SPY) hit in October 2026?
What will S&P 500 (SPY) hit Week of October 12 2026?
S&P 500 (SPY) closes above ___ on October 12?
What will S&P 500 (SPY) hit Week of October 12 2026?
S&P close price end of 2026?
Anthropic IPO Closing Market Cap
Rules
This market will resolve to "Up" if the Close price for S&P 500 (SPY) on October 12, 2026 is higher than the Close price for S&P 500 (SPY) on the most recent prior trading day.
Free JSON for this market, no API key needed:
https://api.coinrithm.com/api/prediction-markets/events/polymarket/spy-up-or-down-on-october-12-2026AI agents: call pm_data_event on the CoinRithm MCP server:
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