NDX Daily Up or Down historical data
NDX Daily Up or Down is a Polymarket indices series with markets recurring daily. Marketlens has captured 41 markets since March 2, 2026, of which 41 resolved, with $97.4K 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 ndx-daily-up-or-down
Resolution outcomes
Outcomes across 40 resolved markets with a recorded winning outcome. Settlement in the archive is by winning outcome, not by final traded price.
Recent markets in this series
- Nasdaq 100 (NDX) Up or Down on August 4?
- Nasdaq 100 (NDX) Up or Down on July 23?
- Nasdaq 100 (NDX) Up or Down on April 24?
Backtest this series
from marketlens import MarketLens
client = MarketLens()
result = client.backtest(
MyStrategy(), "ndx-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 NDX Daily Up or Down markets are in the archive?
41 markets from March 2, 2026 through August 5, 2026, of which 41 have resolved.
What data exists for each NDX 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 "ndx-daily-up-or-down" through the API and Python SDK, or downloadable as Parquet.
How often do NDX Daily Up or Down markets resolve Up?
Of 40 resolved markets with a recorded outcome, 23 resolved Up (57.5%) and 17 resolved Down.
How much does a typical NDX Daily Up or Down market trade?
Average traded volume is $3.4K per market, $97.4K across the series.
Can I backtest strategies on NDX Daily Up or Down?
Yes. Pass the slug "ndx-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: SPX Open Daily Up or Down, SPX Daily Up or Down, Russell 2000 Daily Up or Down, Dow Jones Daily Up or Down, Hang Seng Daily Up or Down, NIK Daily Up or Down, or all indices series.
Try it
Replay NDX 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