Featured scenario
Trade Black Monday.
The S&P 500 fell 20.5% on 19 Oct 1987 — the largest one-day percentage drop in its history. Stops placed under the prior day's low filled far below. Build the routine first: every trade passes a five-point checklist, risks 1% of your account by default (2% and 3% are allowed so you can see what size does to a streak) and targets at least 2R.
The 5-minute session is a reconstruction: official open, high, low and close, with an approximate path between them based on the SEC's 1988 report. Details
Trading Simulator Features
Free — no account, no cardPractice the routine, not just the trade.
Pick a market moment, go long or short, size the trade, manage it bar by bar. Free to use, right in the browser — the rules and the journal keep you honest about how you actually behaved.
Five-point checklist
Context, invalidation, sizing, thesis, emotional state — the order stays locked until all five pass.
You rehearse the routine professionals run before risking money.
Risk-first sizing
Set a stop and the ticket sizes the trade from 1% account risk, showing the dollar loss and the reward.
You learn that size, not prediction, decides if a losing streak survives.
Realistic stop fills
Stops can fill past your level on fast bars and gaps, with the slippage shown.
No false confidence that your stop equals your exact loss.
Hard discipline rules
One trade at a time, stops never widened, cool-off after three losses, revenge trades blocked.
The app enforces rules you'd struggle to enforce on yourself.
Journal & discipline score
Every trade saved with your thesis, sizing and a 0–100 discipline score. Kept in this browser only — export as CSV.
You improve by reviewing patterns, not by chasing the last trade.
Blind mode
Trade Black Monday 1987 or the 2008 crash, or let the app pick a window and hide the answer.
You face uncertainty without knowing how the story ends.
New here? Open the opening-bell session above, place one trade through the checklist, then read your first journal entry. Plan, trade, review — that loop is the whole point.
Trade These Historic Market Conditions
Every scenario below trades on daily bars — switch to weekly if you want the slower view. Black Monday has more options: the 5-minute opening bell, plus daily and weekly.
Educational simulator only. No real money, no real orders, not financial advice. Simulated fills are simplified and real markets can behave worse. About the data.