Polymarket· finance· open· settles 2026-09-30

Will Opendoor (OPEN) close above $4.00 end of September?

Open on Polymarket ↗Yes last at 11¢

The catch

Uses Pyth data feed, not traditional stock exchange closing prices.
“Closing prices will be used exactly as published by Pyth, without rounding.” · market rules ↗

Pays out only if

Opendoor Technologies Inc. (OPEN) stock closes above $4.00 on the last trading day of September 2026.
“This market will resolve to "Yes" if the Close price for Opendoor Technologies Inc. (OPEN) on the final trading day of September 2026 is higher than the listed price.” · market rules ↗
Has to happen during September 2026
“This market will resolve to "Yes" if the Close price for Opendoor Technologies Inc. (OPEN) on the final trading day of September 2026 is higher than the listed price.” · market rules ↗
Counts as done when: Pyth Close value of 1-minute candle at end of regular trading hours
“For a standard full trading session, the closing price refers to the Pyth "Close" value of the 1-minute candle corresponding to the final minute of regular trading hours on the primary exchange.” · market rules ↗
Decided by: Pyth, primary exchange
“The resolution source for this market will be Pyth, specifically the "Close" values for the relevant 1-minute candle for Opendoor Technologies Inc. (OPEN) available at https://pythdata.app/explore/Equity.US.OPEN%2FUSD.” · market rules ↗

Does not count

Exactly equal to $4.00 does not count as YES
“If the two specified prices are exactly equal, this market will resolve to "No".” · market rules ↗
OPEN closes at exactly $4.00our reading
OPEN closes above $4.00 on a different exchange but Pyth shows a different priceour reading
OPEN closes above $4.00 intraday but ends the day below $4.00our reading

Watch out

HIGHA Yes here may pay less than a dollar
“If Opendoor Technologies Inc. (OPEN) does not trade at all during the regular session of the final trading day of the month, the market will resolve 50-50.” · market rules ↗
WATCHSome obvious wins don't count
NOTEAn outside data source decides, with a named backup
“The resolution source for this market will be Pyth, specifically the "Close" values for the relevant 1-minute candle for Opendoor Technologies Inc. (OPEN) available at https://pythdata.app/explore/Equity.US.OPEN%2FUSD.” · market rules ↗

Read on 2026-09-10. Click a line for the sentence it rests on. Facts and gaps only, not a prediction.

The rules, in plain English

This market resolves to Yes if Opendoor Technologies Inc. (OPEN) closes above $4.00 on the last trading day of September 2026. Otherwise it resolves to No. If the closing price is exactly $4.00, the market resolves to No. Closing prices are taken from Pyth without rounding. If OPEN does not trade at all during the regular session on the final trading day of the month, the market resolves 50-50. For a normal full trading session, the closing price is the Pyth Close value of the 1-minute candle for the final minute of regular trading hours on the primary exchange. If the session is shortened (like for a market holiday), the Pyth Close value of the 1-minute candle for the final minute of that shortened session is used. If there is no valid Pyth Close value for the 1-minute candle at the end of regular trading hours, the last valid Pyth price during regular trading hours is used as the closing price. If there is no valid Pyth price for that trading day due to a system outage, data failure, or other technical problem, the official closing price from the primary exchange where the security trades is used. If there is a stock split, reverse stock split, or similar corporate action during the time frame, the market resolves based on split-adjusted prices shown on Pyth. The target price will be adjusted proportionally for any stock splits. Resolution is based on the historical price data shown on Pyth after adjustments are applied. The resolution source is Pyth, specifically the Close values for the relevant 1-minute candle for Opendoor Technologies Inc. (OPEN) at https://pythdata.app/explore/Equity.US.OPEN%2FUSD.

What the rules leave open

Which exchange is the 'primary exchange' for OPEN
closest the rules come: “For a standard full trading session, the closing price refers to the Pyth "Close" value of the 1-minute candle corresponding to the final minute of regular trading hours on the primary exchange.” · market rules ↗
What constitutes 'regular trading hours' for the primary exchange
closest the rules come: “For a standard full trading session, the closing price refers to the Pyth "Close" value of the 1-minute candle corresponding to the final minute of regular trading hours on the primary exchange.” · market rules ↗

Original rules text

Read from the market rules ↗.

This market will resolve to "Yes" if the Close price for Opendoor Technologies Inc. (OPEN) on the final trading day of September 2026 is higher than the listed price. Otherwise, this market will resolve to "No." If the two specified prices are exactly equal, this market will resolve to "No". Closing prices will be used exactly as published by Pyth, without rounding. If Opendoor Technologies Inc. (OPEN) does not trade at all during the regular session of the final trading day of the month, the market will resolve 50-50. For a standard full trading session, the closing price refers to the Pyth "Close" value of the 1-minute candle corresponding to the final minute of regular trading hours on the primary exchange. If the relevant session is shortened (for example, due to a market-holiday schedule), the Pyth "Close" value of the 1-minute candle corresponding to the final minute of that shortened session will be used. If the relevant day has no valid Pyth Close value for the 1-minute candle corresponding to the end of regular trading hours on the primary exchange, the market will use the last valid Pyth price achieved during the regular trading hours of the primary exchange as the effective closing price. If no valid Pyth price exists for that trading day due to a system outage, data failure, or other technical disruption, the official closing price published by the primary exchange on which the listed security trades will be used to determine the closing price for that day. In the event of a stock split, reverse stock split, or similar corporate action affecting the listed security during the listed time frame, this market will resolve based on split-adjusted prices as displayed on Pyth. The target price will be adjusted proportionally to reflect any stock splits. Resolution will be based on the historical price data as shown on Pyth after any adjustments have been applied. The resolution source for this market will be Pyth, specifically the "Close" values for the relevant 1-minute candle for Opendoor Technologies Inc. (OPEN) available at https://pythdata.app/explore/Equity.US.OPEN%2FUSD.

Source ↗

Get the weekly five

The five worst-worded open markets, every Sunday.