Zero-line location and failed bullish crosses
When a bullish cross above zero fails at resistance, the next histogram fade often matters more than forcing a re-entry.
A bullish MACD cross above the zero line inside a mature uptrend can still fail if price is jammed under a well-tested ceiling. The failure itself is useful information: the histogram often rolls over quickly, and that roll can be cleaner timing for standing aside than for flipping short without a plan.
We ask students to log failed crosses with a simple note: where was zero, what was the nearest price level, and how many bars did the histogram keep expanding after the cross. Patterns in that log usually reveal personal blind spots faster than another indicator ever will.
If you trade Australian equities or index futures, remember that thin afternoon sessions can exaggerate shallow crosses. Prefer confirming the same timing idea on the daily panel before treating an intraday cross as decisive.