

The S&P 500 (^GSPC) is often seen as a benchmark for strong businesses, but that doesn’t mean every stock is worth owning. Some companies face significant challenges, whether it’s stagnating growth, heavy debt, or disruptive new competitors.
Some large-cap stocks are past their peak, and StockStory is here to help you separate the winners from the laggards. Keeping that in mind, here are two S&P 500 stocks leading the market forward and one that could be in trouble.
Market cap: $979.9 billion
Known for its large-format Supercenters, Walmart (NASDAQ:WMT) is a retail pioneer that serves a budget-conscious consumer who is looking for a wide range of products under one roof.
Why Are We Hesitant About WMT?
Walmart is trading at $123.52 per share, or 40.4x forward P/E. Read our free research report to see why you should think twice about including WMT in your portfolio.
Market cap: $59.12 billion
Founded in 1997 by its longtime CEO Michael Hsing, Monolithic Power Systems (NASDAQ:MPWR) is an analog and mixed signal chipmaker that specializes in power management chips meant to minimize total energy consumption.
Why Are We Bullish on MPWR?
Monolithic Power Systems’s stock price of $1,216 implies a valuation ratio of 28.7x forward P/E. Is now the time to initiate a position? Find out in our full research report, it’s free.
Market cap: $72.92 billion
Selling excess inventory or overstocked items from other retailers, Ross Stores (NASDAQ:ROST) is an off-price concept that sells apparel and other goods at prices much lower than department stores.
Why Is ROST a Top Pick?
At $228.00 per share, Ross Stores trades at 27.2x forward P/E. Is now the right time to buy? See for yourself in our in-depth research report, it’s free.
ALSO WORTH WATCHING: Top 5 Momentum Stocks. The best time to own a great stock is when the market is finally noticing it. These aren’t just high-quality businesses. Something is happening with them right now. Elite fundamentals meet near-term momentum — both boxes checked at the same time.
Find out which stocks our AI platform is flagging this week. See this week’s Strong Momentum stocks — FREE. Get Our Strong Momentum Stocks for Free HERE.
Stocks that made our list in 2020 include now familiar names such as Nvidia (+1,460% between June 2020 and June 2025) as well as under-the-radar businesses like the once-small-cap company Comfort Systems (+1,154% between June 2020 and June 2025). Find your next big winner with StockStory today.