What is the “OpenAI browser by September 30?” market asking?

It asks whether the following will happen: OpenAI browser by September 30? Traders buy Yes shares if they think it will and No shares if they think it will not.

What do the Yes and No prices mean?

At the last observation Yes traded at 0.0¢ and No at 100.0¢. A Yes share pays $1 if the market resolves Yes, so its price is the market's implied probability: 0.0% for Yes and 100.0% for No. The two prices add up to about one dollar.

How did this market resolve?

It resolved No on 1 Oct 2025. Trading has stopped; the record of prices, holders and trades stays on this page.

How does this market resolve?

This market will resolve to "Yes" if OpenAI publicly releases a standalone web browser that is intended for general web browsing and is available for use by the public in at least one country or region by September 30, 2025, 11:59 PM ET. Otherwise, this market will resolve to "No". For this market to resolve to "Yes," such a browser must be launched and publicly accessible, including via open beta or open rolling free waitlist signups. A closed beta or any form of private access will not suffice. The release must be clearly defined and publicly announced by OpenAI as being accessible to the…

What is the difference between volume, liquidity and open interest?

Volume is the dollar value of shares traded in a period, liquidity is the dollar value resting in the order book ready to be traded against, and open interest is the value of all shares currently held. Volume measures activity, liquidity measures how easily you can trade, and open interest measures how much is at stake.

Who still holds shares in this market?

42 public wallets still held shares when Vultax last looked. Winners usually redeem their shares after settlement, so the remaining holders are mostly on the losing side.

Where does this data come from and how fresh is it?

Prices, the order book, holders and the trade tape come from Polymarket's public order book and data API. Vultax records each observation with its own timestamp (market facts last updated Oct 2, 8:36 AM UTC) and shows a value as unavailable rather than as zero when a source has not answered.

Can I trade this market on Vultax?

No. Vultax is a research and paper-trading terminal; it does not execute orders. The trade controls open the official market on Polymarket (https://polymarket.com/event/openai-browser-by-september-30) or the Vultax predictions monitor, where you can track the market and paper trade it.

Resolved No: OpenAI browser by September 30?

Market referenceopenai-browser-by-september-30Updated Oct 2, 2025 UTC

Resolved

No · settled Oct 1, 2025 UTC

Yes

0.0%

100.0%

Final Yes 0¢Final No 100¢

Lifetime volume

$317.0K

Resolved

Settled

Oct 1, 2025 UTC

Source Evidence

Evidence coverage

Items

Fetched

Latest

Oct 2, 2025 UTC

Public Polymarket market/event context is available; Vultax source-pack coverage is tracked separately.

Depth

Observed

Oct 2, 2025 UTC

This closed market has no live orderbook depth; the public close quote is shown for context.

Trading stateMarket usability at the displayed observation.

Market state

Resolved

Order book

Captured book available

Final outcome

The resolved venue state is treated as proof of resolution; holder and trade rows are settlement context.

Holder depthCapped public top-holder sample.

Rows loaded

Wallets

Top 10 share

98%

Yes / No shares

27.34K / 214.58

Rows reflect the positive holders returned for this market, not venue-wide open interest.

Recent tapeLatest public market trades.

Trades loaded

500

Wallets

369

Loaded notional

$95.71K

No sell at 99.9%

History rangePolymarket CLOB price history · daily closes · latest observation Oct 1, 12:00 AM UTC

Points

Move

-44 pts

Range

0.5% - 44.5%

Aug 19, 12:00 AM UTC to Oct 1, 12:00 AM UTC

PricesPolymarket CLOB price history · daily closes · latest observation Oct 1, 12:00 AM UTC

Depth historyCheckSubscriber depth access is checked only when requested, keeping the public page fast.

Bucket	Close	Mid
Oct 1, 12:00 AM UTC	0.9%	0.9%
Sep 30, 12:00 AM UTC	0.5%	0.5%
Sep 29, 12:00 AM UTC	0.7%	0.7%

Questions

Questions about this market

What is the “OpenAI browser by September 30?” market asking?: It asks whether the following will happen: OpenAI browser by September 30? Traders buy Yes shares if they think it will and No shares if they think it will not.
What do the Yes and No prices mean?: At the last observation Yes traded at 0.0¢ and No at 100.0¢. A Yes share pays $1 if the market resolves Yes, so its price is the market's implied probability: 0.0% for Yes and 100.0% for No. The two prices add up to about one dollar.
How did this market resolve?: It resolved No on 1 Oct 2025. Trading has stopped; the record of prices, holders and trades stays on this page.
How does this market resolve?: This market will resolve to "Yes" if OpenAI publicly releases a standalone web browser that is intended for general web browsing and is available for use by the public in at least one country or region by September 30, 2025, 11:59 PM ET. Otherwise, this market will resolve to "No". For this market to resolve to "Yes," such a browser must be launched and publicly accessible, including via open beta or open rolling free waitlist signups. A closed beta or any form of private access will not suffice. The release must be clearly defined and publicly announced by OpenAI as being accessible to the…
What is the difference between volume, liquidity and open interest?: Volume is the dollar value of shares traded in a period, liquidity is the dollar value resting in the order book ready to be traded against, and open interest is the value of all shares currently held. Volume measures activity, liquidity measures how easily you can trade, and open interest measures how much is at stake.

Analytics

Bucket

Mid

Spread

Volume

Trades

Oct 1, 12:00 AM UTC

0.9%

Sep 30, 12:00 AM UTC

0.5%

Sep 29, 12:00 AM UTC

0.7%