S&P 500 (SPX) Opens Up or Down on March 17?

Prediction market · Polymarket

Overview

This market will resolve to "Up" if the official S&P 500 Index open price for S&P 500 (SPX) on March 17 is higher than the official S&P 500 Index closing price for SPX on the most recent prior trading day. This market will resolve to "Down" if the official S&P 500 Index open price for S&P 500 (SPX) on March 17 is lower than the official S&P 500 Index closing price for SPX on the most recent prior trading day. E.g., ordinarily, a market on Monday would refer to the previous Friday for its most recent closing price, unless that Friday were a market holiday, in which case it would refer to Thursday, or the next most recent trading day. If the two prices are exactly equal, this market will resolve 50-50. Note that all figures will be rounded to the nearest cent using standard rounding. If SPX does not trade at all during the regular session, the market will resolve 50-50. If either of the relevant days are shortened (for example, due to a market holiday schedule), the official open/close price published by S&P 500 Index for that shortened session will still be used for resolution. If the previous trading day has no official closing price (for example, due to a trading halt into the market close, system issue, delisting, or other disruption), the market will use the last valid on-exchange trade price of the regular session as the effective closing price. The resolution source for this market is the Wall Street Journal, specifically the Open/Close values published by the WSJ under "Historical Prices". US: https://www.wsj.com/market-data/stocks EMEA: https://www.wsj.com/market-data/stocks/emea ASIA: https://www.wsj.com/market-data/stocks/asia

Ticker

spx-opens-up-or-down-on-march-17-2026

Volume

100.4K

24h volume

100.3K

1w volume

100.4K

Open interest

0

Liquidity

85.8K

Liquidity CLOB

85.8K

Start

Mar 16, 2026

End

Mar 17, 2026

Status

Active

Access

Restricted

Created

Mar 17, 2026

Resolution source

https://www.wsj.com/market-data/stocks

Event ID

275900

Slug

spx-opens-up-or-down-on-march-17-2026

Markets

1

Tags

SPXUp or DownDailyIndiciesFinanceHide From New
Raw event data
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  "slug": "spx-opens-up-or-down-on-march-17-2026",
  "title": "S&P 500 (SPX) Opens Up or Down on March 17?",
  "description": "This market will resolve to \"Up\" if the official S&P 500 Index open price for S&P 500 (SPX) on March 17 is higher than the official S&P 500 Index closing price for SPX on the most recent prior trading day.\n\nThis market will resolve to \"Down\" if the official S&P 500 Index open price for S&P 500 (SPX) on March 17 is lower than the official S&P 500 Index closing price for SPX on the most recent prior trading day.\n\nE.g., ordinarily, a market on Monday would refer to the previous Friday for its most recent closing price, unless that Friday were a market holiday, in which case it would refer to Thursday, or the next most recent trading day.\n\nIf the two prices are exactly equal, this market will resolve 50-50. Note that all figures will be rounded to the nearest cent using standard rounding.\n\nIf SPX does not trade at all during the regular session, the market will resolve 50-50.\n\nIf either of the relevant days are shortened (for example, due to a market holiday schedule), the official open/close price published by S&P 500 Index for that shortened session will still be used for resolution.\n\nIf the previous trading day has no official closing price (for example, due to a trading halt into the market close, system issue, delisting, or other disruption), the market will use the last valid on-exchange trade price of the regular session as the effective closing price.\n\nThe resolution source for this market is the Wall Street Journal, specifically the Open/Close values published by the WSJ under \"Historical Prices\".\n\nUS: https://www.wsj.com/market-data/stocks\nEMEA: https://www.wsj.com/market-data/stocks/emea\nASIA: https://www.wsj.com/market-data/stocks/asia",
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  "startDate": "2026-03-16T12:08:24.717009Z",
  "creationDate": "2026-03-17T13:30:00Z",
  "endDate": "2026-03-17T20:00:00Z",
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      "acceptingOrdersTimestamp": "2026-03-16T12:03:29Z",
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