Blind Drill is a trading trainer built around a simple exercise: trade a real historical day without knowing its ticker or date, then look closely at how you behaved. The money is virtual. The decisions are yours. Your discipline grade measures whether you followed the rules you set, rather than rewarding a profitable result on its own.
Open a blind drill and Blind Drill selects a lively day from the library. You advance through it one minute at a time, place simulated orders and finish with a scorecard. It shows the rules you broke and the time each break happened. That gives the next session a purpose: work on one habit, then review it again.
Practice should fit the time you have
The live market does not wait for your lunch break. A setup may appear while you are working, or fail to appear while you are watching. Replay lets you practice decisions outside that schedule, with pauses when you need to think and faster playback when you are ready to move on.
There is no fixed drill length. Play, pause, advance a single bar or end the session whenever you choose. You do not need to search through stocks and dates before starting a blind drill. Blind Drill picks the day, leaving your attention for entries, position size, stops and the decision to stay out.
Members can also choose a stock or crypto pair, an available day and their own starting time. The blind drill is the main exercise; choosing a day gives you another way to use the same trainer.
Why hide the ticker and date?
Knowing how a famous trading day ended can change the decisions you make during its replay. A blind drill removes those two clues until the session ends. The server releases bars one step at a time, so future bars remain unavailable while you are trading.
For stocks, a lively day qualifies when its first two hours moved at least as much as that stock's typical day in the library. This selects days with movement to work through. It does not promise a clean trend, an easy trade or a profitable setup.
At the end, the ticker and date are revealed and the rest of the day appears in grey. You can compare what you knew at the time with what happened later without confusing the two.
A winning trade can still break your rules
A trade can finish in profit after an oversized entry or a widened stop. The result does not erase that decision. Blind Drill records those actions separately through a discipline score that starts at 100 and loses points for defined rule breaks.
Entering without a stop, adding to a losing position, chasing far from VWAP and trading beyond your limits all leave a record. The scorecard also shows P&L and other performance figures, but a high discipline score is not evidence of future profit. Read the grade as feedback on the rules checked in that session.
Your account keeps previous sessions and a recent average discipline score. Use that history to revisit decisions, not to turn a short simulated record into a prediction.
Real prices, specific limits
US stock replays use historical 1-minute bars built from trades on IEX. Their volume covers IEX trades only, so it is lower than consolidated volume shown elsewhere. Crypto prices come from decentralized exchange trading pools and can differ from centralized markets. All replay data is at least one trading day old.
Fills are modeled, with slippage and commissions. There is no Level 2 or tick data, and no real orders reach a market. Blind Drill is not a broker and provides no signals, trade ideas or investment advice. Simulated results do not predict live results.
Try the synthetic DEMO day without an account, or read how the drills work. Start with one drill, read the grade honestly and choose one habit to work on next.