SPY (SPY) Up or DownPolymarket historical data and price history
SPY (SPY) Up or Down: a Polymarket equities series with markets recurring daily. Marketlens has captured 118 markets since March 25, 2026, of which 117 resolved, with $1.4M 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.
For the equities archive as a whole, see Polymarket price history.
Data as of 2026-09-17 · Polymarket series SPY Daily Up or Down · slug spy-daily-up-or-down
Resolution outcomes
Outcomes across 117 resolved markets with a recorded winning outcome. Settlement in the archive is by winning outcome, not by final traded price.
Markets in this series
The most recently resolved of 118 markets.
Backtest this series
from marketlens import MarketLens
client = MarketLens()
result = client.backtest(
MyStrategy(), "spy-daily-up-or-down",
after="2026-09-10", before="2026-09-18", initial_cash=1_000,
)
result.show() # inspect the run in the dashboardAvailable datasets
Common questions
How many SPY (SPY) Up or Down markets are in the archive?
118 markets from March 25, 2026 through September 17, 2026, of which 117 have resolved and 1 are active.
What data exists for each SPY (SPY) 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-daily-up-or-down" through the API and Python SDK, or downloadable as Parquet.
How often do SPY (SPY) Up or Down markets resolve Up?
Of 117 resolved markets with a recorded outcome, 62 resolved Up (53.0%) and 55 resolved Down.
How much does a typical SPY (SPY) Up or Down market trade?
Average traded volume is $20.8K per market, $1.4M across the series.
Can I backtest strategies on SPY (SPY) Up or Down?
Yes. Pass the slug "spy-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.
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Try it
Replay SPY (SPY) Up or Down tick by tick
The free tier includes 1M rows per day with full API and full archive access, no card required.
$ pip install marketlens