Let's check out a few charts.
In this daily Japanese candlestick chart of SHOP, below, we can see that prices have more than doubled from the recent March low. Wednesday's candle pattern looks like a possible bearish hanging man. A bearish candle here on Thursday will be confirmation of a reversal.
Prices are above the rising 50- and 200-day moving averages, but these are lagging indicators. Notice that the trading volume did not expand as prices rallied to new highs this month. Also, the On-Balance-Volume (OBV) line has not made a new high recently. The 12-day price momentum study in the lower panel shows a bearish divergence with weaker momentum readings this month versus April even though prices made higher highs. This is not a good sign.