While the proven Zacks Rank places an emphasis on earnings estimates and estimate revisions to find strong stocks, we also know that investors tend to develop their own individual strategies. With this in mind, we are always looking at value, growth, and momentum trends to discover great companies.Of these, perhaps no stock market trend is more popular than value investing, which is a strategy that has proven to be successful in all sorts of market environments. Value investors use tried-and-true metrics and fundamental analysis to find companies that they believe are undervalued at their current share price levels.In addition to the Zacks Rank, investors looking for stocks with specific traits can utilize our Style Scores system. Of course, value investors will be most interested in the system's "Value" category. Stocks with "A" grades for Value and high Zacks Ranks are among the best value stocks available at any given moment.One stock to keep an eye on is Toll Brothers (TOL). TOL is currently sporting a Zacks Rank of #2 (Buy) and an A for Value.Investors will also notice that TOL has a PEG ratio of 0.57. This popular metric is similar to the widely-known P/E ratio, with the difference being that the PEG ratio also takes into account the company's expected earnings growth rate. TOL's industry has an average PEG of 0.67 right now. Over the last 12 months, TOL's PEG has been as high as 4.11 and as low as 0.41, with a median of 0.68.Another notable valuation metric for TOL is its P/B ratio of 1.49. The P/B ratio is used to compare a stock's market value with its book value, which is defined as total assets minus total liabilities. This stock's P/B looks attractive against its industry's average P/B of 1.54. Over the past 12 months, TOL's P/B has been as high as 1.68 and as low as 1.05, with a median of 1.38.These are only a few of the key metrics included in Toll Brothers's strong Value grade, but they help show that the stock is likely undervalued right now. When factoring in the strength of its earnings outlook, TOL looks like an impressive value stock at the moment. Tech IPOs With Massive Profit Potential In the past few years, many popular platforms and like Uber and Airbnb finally made their way to the public markets. But the biggest paydays came from lesser-known names. For example, electric carmaker X Peng shot up +299.4% in just 2 months. Think of it this way… If you had put $5,000 into XPEV at its IPO in September 2020, you could have cashed out with $19,970 in November. With record amounts of cash flooding into IPOs and a record-setting stock market, this year’s lineup could be even more lucrative.See Zacks Hottest Tech IPOs Now >>Want the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report Toll Brothers Inc. (TOL): Free Stock Analysis Report To read this article on Zacks.com click here.