Day Trading Setups
Trading Halt Resumption Play (LULD Circuit Breaker Reopen)
A single-stock volatility halt freezes the tape mid-move and forces a real decision before anyone knows what the reopen print will actually be.
Play forward, wait for the trip, decide before the clock runs out
Real candles play forward normally until a bar's real range expansion crosses the slider's threshold, tripping a simulated LULD-style halt. The chart freezes on that last candle with a dashed HALTED overlay and a countdown timer. Before it hits zero, commit to Fade the pre-halt move or Follow it. When the timer ends, a real reopen print appears, weighted so a bigger pre-halt move produces a wider, more volatile reopen, followed by several bars that resolve your call.
Press play to run the session.
| Pre-halt move tier | Calls | Correct | Real accuracy |
|---|---|---|---|
| Small | 0 | 0 | — |
| Medium | 0 | 0 | — |
| Large | 0 | 0 | — |
How it works
- The halt trigger is a real bar-level measurement. Each bar's real range gets compared to the trailing average range immediately before it, and the first bar whose ratio clears the slider's threshold trips the halt right there, not on a timer or a fixed bar count.
- The freeze and countdown are real state, not decoration. The last traded candle stays on screen with a dashed HALTED marker while a countdown actually ticks down from a simulated five minutes, and the call buttons only work while that countdown is still running.
- The reopen print is randomized but weighted by the real pre-halt move size. A bigger pre-halt range produces a wider gap distribution around the pre-halt close and more volatile bars right after, a small pre-halt move reopens with a tighter, calmer distribution.
- The grade compares your call against several real post-reopen bars. Fade wins if price reverses the pre-halt direction after the reopen, Follow wins if it extends, and every call gets bucketed by how large the real pre-halt move was, small, medium, or large.
Where this breaks
The reopen can gap either way, and early volatility can stop you out before you're proven right
A halt does not promise the reopen extends or reverses in any particular direction, the reopen print can gap against the pre-halt move just as easily as with it, regardless of how strong that move looked going in. Even a genuinely correct call is not safe once trading resumes, because the first several post-reopen bars in this tool carry wide, fast whipsaws that can tag a stop before the real move plays out in your favor. Treat the accuracy numbers above as a read on direction only, not as a guarantee that a correct call would have survived the actual chop right after the bell rings again.