Alimentation Couche-Tard Inc. ( ATD-T ) Shares in the Quebec-based operator of Circle K, Couche-Tard and Ingo-branded convenience stores in Canada, the United States and Europe have outperformed the S&P/TSX Composite Index this year. But most investors are probably not celebrating. After the share price essentially doubled over the four years from May, 2018, to May, 2022, following a succession of deals that increased the company's store count by 40 per cent, the shares have fallen 18 per cent since mid-May. The stock is now trading at levels seen last July. David Berman looks at why this may be a buying opportunity.