What a fantastic six months it’s been for Amtech. Shares of the company have skyrocketed 55%, hitting $14.40. This performance may have investors wondering how to approach the situation.

Is there a buying opportunity in Amtech, or does it present a risk to your portfolio? Get the full breakdown from our expert analysts, it’s free.

Why Do We Think Amtech Will Underperform?

We’re happy investors have made money, but we're sitting this one out for now. Here are three reasons there are better opportunities than ASYS and a stock we'd rather own.

1. Long-Term Revenue Growth Disappoints

A company’s long-term sales performance can indicate its overall quality. Even a bad business can shine for one or two quarters, but a top-tier one grows for years. Regrettably, Amtech’s sales grew at a mediocre 3.3% compounded annual growth rate over the last five years. This was below our standard for the semiconductor sector. Semiconductors are a cyclical industry, and long-term investors should be prepared for periods of high growth followed by periods of revenue contractions.

2. Mediocre Free Cash Flow Margin Limits Reinvestment Potential

Free cash flow isn't a prominently featured metric in company financials and earnings releases, but we think it's telling because it accounts for all operating and capital expenses, making it tough to manipulate. Cash is king.

Amtech 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 6.6%, below what we’d expect for a semiconductor business.

3. Previous Growth Initiatives Have Lost Money

Growth gives us insight into a company’s long-term potential, but how capital-efficient was that growth? A company’s ROIC explains this by showing how much operating profit it makes compared to the money it has raised (debt and equity).

Amtech’s five-year average ROIC was negative 2.8%, meaning management lost money while trying to expand the business. Its returns were among the worst in the semiconductor sector.

Final Judgment

We see the value of companies furthering technological innovation, but in the case of Amtech, we’re out. Following the recent surge, the stock trades at $14.40 per share (or a trailing 12-month price-to-sales ratio of 2.8×). The market typically values companies like Amtech based on their anticipated profits for the next 12 months, but there aren’t enough published estimates to arrive at a reliable number. You should avoid this stock for now - better opportunities lie elsewhere. We’d recommend looking at one of Charlie Munger’s all-time favorite businesses.

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