CHART COLLEGE

This chart has happened before.

Pick a stock and a date. The memory finds the historical charts that looked like it, cut at the same point, and shows you what each of them did next: which kept going, which gave some back, which reversed. Learn from the charts, not from a number.

Pick an anchor

Any listed common stock with a built state. ETFs and leveraged funds get no wall; young listings carry a warning.

Three walls to try

$JBHT on 2026-09-16 a 10% gap-down on ~5x volume (lesson: gap-downs)
$CRWV on 2026-09-17 a 2025 listing (lesson: young listings)
$NVO on 2026-09-18 a seasoned large cap (lesson: a year is a 90-point range)

What the memory measured

In the D7 test (403 anchors, 2023-2025) the 1-month band held 76% of outcomes, 3-month 77%, 6-month 76%, 1-year 75%, against a nominal 80%; the analog pool under-represents names that later delisted. At 1, 5 and 10 sessions the bands held 80%, 82% and 79% on the same anchors. On every wall the spread between the best and worst chart is the thing to remember.

Lessons

What follows a gap-down on heavy volume 8,124 events, 2019–2026: no bounce, no cascade, a band 2.3 times wider.
Why young listings are wider than the band says D6: 71% held at 5 sessions, not 80%.
A year is a 90-point range D7: coverage 75–77% from 1 month to 1 year; the pool under-represents names that left the tape.