SPY Open Daily Up or Down historical data
SPY Open Daily Up or Down is a Polymarket equities series with markets recurring daily. Marketlens has captured 5 markets since July 22, 2026, of which 4 resolved, with $63.8K in traded volume. Every market's order book is stored in full: periodic L2 snapshots plus every individual price change with a millisecond timestamp, alongside trades, candles, and the final resolution outcome.
Data as of 2026-08-05 · series slug spy-open-daily-up-or-down
Resolution outcomes
Outcomes across 4 resolved markets with a recorded winning outcome. Settlement in the archive is by winning outcome, not by final traded price.
Markets in this series
SPY Opens Up or Down on July 23?
listed 2026-07-22 · closed 2026-07-23 · volume $63.8K · outcomes Up / Down · resolved Down
SPY Opens Up or Down on July 24?
listed 2026-07-23 · closed 2026-07-24 · volume $0 · outcomes Up / Down · resolved Up
SPY Opens Up or Down on August 3?
listed 2026-08-02 · closed 2026-08-03 · volume $10 · outcomes Up / Down · resolved Up
SPY Opens Up or Down on August 4?
listed 2026-08-03 · closed 2026-08-04 · volume n/a · outcomes Up / Down · resolved Up
SPY Opens Up or Down on August 5?
listed 2026-08-04 · closed 2026-08-05 · volume n/a · outcomes Up / Down · active
Backtest this series
from marketlens import MarketLens
client = MarketLens()
result = client.backtest(
MyStrategy(), "spy-open-daily-up-or-down",
after="2026-07-29", before="2026-08-06", initial_cash=1_000,
)
result.show() # inspect the run in the dashboardAvailable datasets
Common questions
How many SPY Open Daily Up or Down markets are in the archive?
5 markets from July 22, 2026 through August 5, 2026, of which 4 have resolved and 1 are active.
What data exists for each SPY Open Daily Up or Down market?
Full L2 order book history (snapshots plus every price change at millisecond resolution), individual trades, OHLC candles, and the resolution outcome. All of it is queryable by the series slug "spy-open-daily-up-or-down" through the API and Python SDK, or downloadable as Parquet.
How much does a typical SPY Open Daily Up or Down market trade?
Average traded volume is $21.3K per market, $63.8K across the series.
Can I backtest strategies on SPY Open Daily Up or Down?
Yes. Pass the slug "spy-open-daily-up-or-down" to client.backtest() in the Python SDK. Execution mode replays every market's order book tick by tick and fills simulated orders against real historical depth with queue priority, latency, and fee modelling; Alpha mode replays one bar per market for slower signals over long windows.
Related series: S&P 500 monthly hit, SPY Daily Up or Down, SPY Hit Price Weekly, Meta Hit Price Monthly, Palantir Hit Price Monthly, OPEN Neg Risk Weekly, or all equities series.
Try it
Replay SPY Open Daily Up or Down tick by tick
The free tier includes 5M events per day with full API and full archive access, no card required.
$ pip install marketlens