There are certain stocks that investors treat like comfort food. They don't necessarily make your pulse race, but they make you feel like everything is going to be okay. Walmart has become one of those stocks for me to watch. Whenever markets get nervous, inflation spikes, consumer confidence wobbles, or headlines begin sounding like the opening chapter of a disaster novel, investors seem to sprint toward Walmart as if it's the financial equivalent of a reinforced concrete bunker. I completely understand why. At the same time, I can't help wondering whether everyone else understands why they're buying it—or whether they're simply buying it because everyone else is buying it. That's the uncomfortable question I keep asking myself whenever I look at Walmart today. The Company Doesn't Need to Prove Anything One thing I appreciate about Walmart is that it doesn't have to convince anyone it belongs. Plenty of companies spend years promising that someday they...