
Allegro MicroSystems’s 32.5% return over the past six months has outpaced the S&P 500 by 29.4%, and its stock price has climbed to $38.27 per share. This was partly thanks to its solid quarterly results, and the run-up might have investors contemplating their next move.
Is now the time to buy Allegro MicroSystems, or should you be careful about including it in your portfolio? Get the full breakdown from our expert analysts, it’s free.
Why Is Allegro MicroSystems Not Exciting?
We’re happy investors have made money, but we're sitting this one out for now. Here are three reasons you should be careful with ALGM and a stock we'd rather own.
1. Revenue Tumbling Downwards
Long-term growth is the most important, but short-term results matter for semiconductors because the rapid pace of technological innovation (Moore's Law) could make yesterday's hit product obsolete today. Allegro MicroSystems’s recent performance marks a sharp pivot from its five-year trend as its revenue has shown annualized declines of 11.8% over the last two years. 
2. EPS Trending Down
We track the long-term change in earnings per share (EPS) because it highlights whether a company’s growth is profitable.
Sadly for Allegro MicroSystems, its EPS declined by 15.2% annually over the last five years while its revenue grew by 7.3%. This tells us the company became less profitable on a per-share basis as it expanded.

3. Mediocre Free Cash Flow Margin Limits Reinvestment Potential
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.
Allegro MicroSystems has shown poor cash profitability relative to peers over the last two years, giving the company fewer opportunities to return capital to shareholders. Its free cash flow margin averaged 7.9%, below what we’d expect for a semiconductor business.

Final Judgment
Allegro MicroSystems isn’t a terrible business, but it doesn’t pass our quality test. With its shares topping the market in recent months, the stock trades at 44.6× forward P/E (or $38.27 per share). This valuation tells us it’s a bit of a market darling with a lot of good news priced in - we think other companies feature superior fundamentals at the moment. Let us point you toward a top digital advertising platform riding the creator economy.
Stocks We Would Buy Instead of Allegro MicroSystems
WHILE YOU’RE HERE: Top 9 Market-Beating Stocks. The best stocks don't just beat the market once. They do it again. And again. Robust revenue growth, rising free cash flow, returns on capital that leave their competition in the dust. The market has already rewarded these businesses.
But our AI platform says the party isn't over. Find out which 9 stocks made the cut this week — FREE. Get Our Top 9 Market-Beating Stocks for Free HERE.
Stocks that have made our list include now familiar names such as Nvidia (+1,326% between June 2020 and June 2025) as well as under-the-radar businesses like the once-micro-cap company Tecnoglass (+1,754% five-year return). Find your next big winner with StockStory today.