Filed under: Stocks to BuyIt goes without saying that the rails are a preferred sector in this neck of the investing woods, hence I'm reiterating my buy rating for Canadian Pacific Railway (CP), first recommended on May 1, 2009 at a price of $37.47. If you bought CP in May, you're up about 33%.The upturn in commodity shipments (potash, coal) has not materialized as soon as forecast, but look for th...