MasTec currently trades at $167.39 and has been a dream stock for shareholders. It’s returned 351% since July 2020, blowing past the S&P 500’s 97.3% gain. The company has also beaten the index over the past six months as its stock price is up 15.8% thanks to its solid quarterly results.
Is now the time to buy MasTec, or should you be careful about including it in your portfolio? Get the full stock story straight from our expert analysts, it’s free.
Why Is MasTec Not Exciting?
Despite the momentum, we don't have much confidence in MasTec. Here are three reasons why you should be careful with MTZ and a stock we'd rather own.
1. Low Gross Margin Reveals Weak Structural Profitability
All else equal, we prefer higher gross margins because they make it easier to generate more operating profits and indicate that a company commands pricing power by offering more differentiated products.
MasTec has bad unit economics for an industrials business, signaling it operates in a competitive market. As you can see below, it averaged a 13.2% gross margin over the last five years. Said differently, MasTec had to pay a chunky $86.83 to its suppliers for every $100 in revenue.
2. EPS Growth Has Stalled
Analyzing the long-term change in earnings per share (EPS) shows whether a company's incremental sales were profitable – for example, revenue could be inflated through excessive spending on advertising and promotions.
MasTec’s flat EPS over the last five years was below its 12% annualized revenue growth. This tells us the company became less profitable on a per-share basis as it expanded.

3. Free Cash Flow Margin Dropping
If you’ve followed StockStory for a while, you know we emphasize free cash flow. Why, you ask? We believe that in the end, cash is king, and you can’t use accounting profits to pay the bills.
As you can see below, MasTec’s margin dropped by 4.4 percentage points over the last five years. This along with its unexciting margin put the company in a tough spot, and shareholders are likely hoping it can reverse course. If the trend continues, it could signal it’s in the middle of an investment cycle. MasTec’s free cash flow margin for the trailing 12 months was 7.4%.

Final Judgment
MasTec’s business quality ultimately falls short of our standards. With its shares topping the market in recent months, the stock trades at 28.7× forward P/E (or $167.39 per share). At this valuation, there’s a lot of good news priced in - we think there are better stocks to buy right now. We’d suggest looking at a safe-and-steady industrials business benefiting from an upgrade cycle.
Stocks We Would Buy Instead of MasTec
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