Deciding when to purchase a stock is perhaps an investor's most challenging decision. This is especially true with newly public, unique companies in high-growth industries, like Arm Holdings (NASDAQ: ARM). Arm Holdings stock has more than doubled since its initial public offering (IPO) around nine months ago, and many investors are eager to own this company. But is now a good time?

Several factors make timing purchases difficult:

Luckily, there are strategies to help. First, let's see what makes Arm so enticing.

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Source Fool.com