US · NYSE and NASDAQ
Build, test and paper-trade strategies on NYSE and NASDAQ data
Full charting, cross-domain screening, event-driven backtesting and paper trading against real market data. Research first: no real money and no live orders in this release.
This platform serves US: prices in $, exchanges NYSE and NASDAQ, times in the exchange's own timezone, and SEC/FINRA rules. The country is baked in at build time; it is never detected from your location and cannot be switched.
Market snapshot
NASDAQ CLOSED- S&P 500close 2026-10-237,623.68−0.52%down
- Dow Jones Industrial Averageclose 2026-10-2352,215.16−1.23%down
- S&P MidCap 400close 2026-10-233,616.59−0.56%down
- Nasdaq-100close 2026-10-2328,957.530.00%unchanged
- Russell 2000close 2026-10-232,775.9−0.29%down
- S&P SmallCap 600close 2026-10-231,681.71−0.29%down
- Cboe Volatility Indexclose 2026-10-2319.45+2.21%up
End-of-session closes from this platform's own records — not a live feed, and not investment advice. How these are computed →
NASDAQ · ClosedEnd-of-session closes, not a live feedsession 2026-10-23
The last completed session
Computed from this platform's own stored bars, split-adjusted, and ranked within the 200 most-traded names this deployment follows. Nothing here is a live quote, and nothing here is a recommendation.
Gainers
Largest advances in the session
- 1CRWDNASDAQCrowdStrike Holdings, Inc. Class A Common Stock257.57+8.25%up
- 2PANWNASDAQPalo Alto Networks, Inc. Common Stock380.55+7.22%up
- 3SLBNYSESLB Limited53.06+7.08%up
- 4OKTANASDAQOkta, Inc. Class A Common Stock213.05+5.82%up
- 5SMTCNASDAQSemtech Corporation Common Stock132+5.50%up
Decliners
Largest declines in the session
- 1BENYSEBloom Energy Corporation193.3−11.24%down
- 2FIXNYSEComfort Systems USA, Inc.1,160.86−9.26%down
- 3TNYSEAT&T Inc.20.93−7.96%down
- 4TMUSNASDAQT-Mobile US, Inc. Common Stock146.54−7.71%down
- 5NEMNYSENewmont Corporation108.87−4.59%down
200 names ranked · session 2026-10-23 · closes onlyHow these are computed →
From a screen to a verified record
Five steps, in the order you take them. Each one opens the page that does it.
Product screen · sample dataFind candidates on price, fundamentals, ownership and filings together. Every field names its source.
Product screen · sample dataBuild or pick from the library
Write your own rules, or pick a strategy from the library and read its rules before you run it.
Product screen · sample dataReplay it over past sessions with modelled fees and slippage. Every result is labelled hypothetical.
Product screen · sample dataDeploy it to a simulated portfolio. The same engine trades each new session with simulated money.
Product screen · sample dataA track record is computed from the platform's own deployment and its fills, under a versioned methodology. Never typed in, never a backtest.
What you get
One registry drives charts, screens, strategies and backtests alike, so a definition means the same thing everywhere you meet it.
Full charting
Candles, overlays and indicators from one registry: the same definitions the screener and your strategies use, so a signal never means two different things.
Cross-domain screening
Screen on price, fundamentals, ownership, short interest, filings and derived scores together. Fields bind to concepts, so a screen keeps working when a data source changes.
Event-driven backtesting
Point-in-time data, modelled fees and slippage, and no look-ahead. Runs are bound to the fee rates in force on their dates, so an old result stays reproducible.
Paper trading on one engine
Paper trading and backtesting share one engine and one simulated venue; only the clock and the feed differ. A parity suite replays real sessions through both paths and asserts the trade blotters match.
Attributed data, never blended
When several sources measure the same thing, you see each one and the spread between them, not an average that hides the disagreement.
Alerts and journal
Alert on any screener condition, and keep a trade journal that reconciles against the platform's own order and fill records.
Why the numbers can be trusted
Backtests that match paper trading, bar for bar
Backtesting and paper trading share one engine and one simulated venue. Only the clock and the data feed differ: the paper runtime literally calls the backtest engine rather than reimplementing it. A parity suite replays real sessions through both paths and asserts the blotters match, so the fills you see in a backtest are the fills paper trading would have made.
1
engine behind backtest and paper
not two implementations that drift
0
blotter divergences tolerated
asserted by the parity suite
11
market-analysis data domains
each declared present or absent, with a reason
What this platform will not do
Stated up front, because finding out after signing up is worse.
No live orders
Live order routing is not built in this release. Nothing here can place a real order.
No hand-placed trades
Every trade comes from a deployed strategy. There is no order ticket to type a trade into.
No performance we did not compute from our own fills
Backtests are labelled hypothetical. A track record is computed from the platform's own deployment, never typed in.
No blended data
Where sources disagree, you see each source and the spread. We never publish an average that hides a disagreement.
No copy trading
The platform never places an order in another person's account, in any release.
No second country
This platform serves one country. There is no country switch, and there never will be.
Start with the free tier
Charts, screening, backtesting and paper trading. No card, and no live-order risk.