A bullish pennant typically lasts one to four weeks, with most resolving within three weeks before the consolidation stretches into symmetrical triangle territory. Bullish pennants are usually short-term patterns that last one to four weeks, and if the duration lasts any longer, the chart pattern is often classified as a symmetrical triangle.
Pennants are usually shorter-term patterns lasting from 1 to 4 weeks, with the maximum length around 12 weeks before a pattern would be considered too long to qualify as a pennant.
On intraday charts, pennants resolve in hours; on daily charts, they form over several days to a few weeks. The tighter and faster the consolidation, the cleaner the breakout.