While the S&P 500 (^GSPC) includes industry leaders, not every stock in the index is a winner. Some companies are past their prime, weighed down by poor execution, weak financials, or structural headwinds.

Some large-cap stocks are past their peak, and StockStory is here to help you separate the winners from the laggards. That said, here is one S&P 500 stock that is leading the market forward and two that could be in trouble.

Market Cap: $54.01 billion

Spun off from Dutch electronics giant Philips in 2006, NXP Semiconductors (NASDAQ: NXPI) is a designer and manufacturer of chips used in autos, industrial manufacturing, mobile devices, and communications infrastructure.

Why Are We Cautious About NXPI?

1. Products and services are facing significant end-market challenges during this cycle as sales have declined by 3.9% annually over the last two years

2. Anticipated sales growth of 10.6% for the next year implies demand will be shaky

NXP Semiconductors is trading at $210.03 per share, or 15x forward P/E. Read our free research report to see why you should think twice about including NXPI in your portfolio, it’s free.

Market Cap: $42.65 billion

Established in 1906, CBRE (NYSE:CBRE) is one of the largest commercial real estate services firms in the world.

Why Is CBRE Risky?

1. Annual sales growth of 11.2% over the last five years lagged behind its consumer discretionary peers as its large revenue base made it difficult to generate incremental demand

2. Free cash flow margin is anticipated to expand by 1 percentage points over the next year, providing additional flexibility for investments and share buybacks/dividends

3. Eroding returns on capital from an already low base indicate that management’s recent investments are destroying value

At $147.83 per share, CBRE trades at 19.6x forward P/E. To fully understand why you should be careful with CBRE, check out our full research report (it’s free).

Market Cap: $80.69 billion

Processing one out of every six paychecks in the United States, ADP (NASDAQ:ADP) provides cloud-based human capital management solutions that help businesses manage payroll, benefits, talent acquisition, and HR administration.

Why Will ADP Outperform?

1. Solid 7.8% annual revenue growth over the last five years indicates its offering’s solve complex business issues

2. Robust free cash flow margin of 20.7% gives it many options for capital deployment, and its rising cash conversion increases its margin of safety

3. Improving returns on capital reflect management’s ability to monetize investments