This rally has been wonderful for those of us fortunate to hold four-letter tickers. The NASDAQ Composite surged 20% off the lows, helping to push up stocks throughout the tech sector. Some very famous tech stocks are up over 20% over this period of time. While that might feel great now, it’s important to know that you are investing in stocks that have what it takes for the long-haul. One of the easiest ways to uncover those stocks is by leaning on the time-tested performance of our Zacks Rank.

Stocks with the best Zacks Ranks, like today’s Bull of the Day TTM Technologies (TTMI Quick QuoteTTMI - Free Report) have great earnings trends which can help investors stay profitable over the long run. TTM Technologies engages in the manufacture and sale of printed circuit boards (PCBs) worldwide. The company operates in two segments, PCB and RF&S Components.

Image Source: Zacks Investment Research

The stock is currently ranks as a Zacks Rank #1 (Strong Buy). The reason for the favorable ranking is the series of earnings estimate revisions coming from analysts. Over the last thirty days, three analysts have increased their estimates for this year and next year. The bullish move has sent up the current year Zacks Consensus Estimate from $1.27 to $1.61 while next year’s number is up from $1.45 to $1.70. The reflects earnings growth of 25.78% this year and 5.8% next year.

That’s coming on revenue growth of 13.66% this year and 5.75% next year. As for valuation, the stock is only trading 10.1x earnings. That is richer than a very low industry average of 4.8x but well below the market’s 18.6x.