A double top
is a reversal chart pattern
which is defined by a chart where a financial instrument
makes a run up to a particular level, then drops back from that level, then makes a second run at that level, and then finally drops back off again.
Significance for traders
The double top pattern shows demand outpacing supply (buyers predominate) up to the first top, causing prices to rise. The supply/demand situation then reverses; supply outpaces demand (sellers predominate), causing prices to fall. After a price "valley", buyers again predominate and prices rise. If traders see that prices are not pushing past their level at the first top, sellers may again prevail, lowering prices and causing a double top to form. It is generally regarded as a bearish sign if prices drop below their level at the earlier valley between the two tops.