When it comes to investing in tech stocks, many investors wrongly focus on share price as a perceived indicator of a given company's value.

But when taken in isolation, a stock's per-share price is essentially meaningless. You should also consider metrics like market cap (the total value of a public company's shares outstanding) relative to the size of a business' total addressable market (TAM). Specific valuation multiples can also be useful to determine whether a given stock is "cheap" or "expensive," such as price-to-sales (P/S) or price-to-earnings (P/E) ratios.

In any case, as someone who has spent over a decade writing about the stock market (and in the interest of delivering on the headline), here are three top tech stocks trading under $20 per share that I think are excellent values today.

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Source Fool.com