Here at Zacks, we offer our members many different opportunities to take full advantage of the stock market, as well as how to invest in ways that lead to long-term success.The Zacks Premium service, which provides daily updates of the Zacks Rank and Zacks Industry Rank; full access to the Zacks #1 Rank List; Equity Research reports; and Premium stock screens like the Earnings ESP filter, makes these more manageable goals. All of the features can help you identify what stocks to buy, what to sell, and what are today's hottest industries.Also included in Zacks Premium is the Focus List. This is a long-term portfolio of top stocks that have all the traits to beat the market.Breaking Down the Zacks Focus ListBuilding an investment portfolio from scratch can be difficult, so if you could, wouldn't you take a peek at a curated list of top stocks?That's what the Zacks Focus List, a portfolio of 50 stocks, offers investors. Not only does it serve as a starting point for long-term investors, but all stocks included in the list are poised to outperform the market over the next 12 months.What makes the Focus List even more helpful is that each selection is accompanied by a full Zacks Analyst Report, which explains the reasoning behind every stock's selection and why we believe it's a good pick for the long-term.The portfolio's past performance only solidifies why investors should consider it as a starting point. For 2020, the Focus List gained 13.85% on an annualized basis compared to the S&P 500's return of 9.38%. Cumulatively, the portfolio has returned 2,519.23% while the S&P returned 854.95%. Returns are for the period of February 1, 1996 to March 31, 2021.Focus List MethodologyWhen stocks are picked for the Focus List, it reflects our enduring reliance on the power of earnings estimate revisions.Earnings estimates, or expectations of growth and profitability, come from brokerage analysts who track publicly traded companies; these analysts work together with company management to analyze every aspect that may affect future earnings, like interest rates, the economy, and sector and industry optimism.Investors also need to look at what a company will earn down the road. This is why earnings estimate revisions are so important.Stocks that receive upward earnings estimate revisions are more likely to receive even more upward changes in the future. For example, if an analyst raised their estimates last month, they're more likely to do it again this month, and other analysts are likely to do the same.Utilizing the power of earnings estimate revisions is when the Zacks Rank joins the party. A unique, proprietary stock-rating model, the Zacks Rank uses changes to quarterly earnings expectations to help investors create a winning portfolio.Four primary factors make up the Zacks Rank: Agreement, Magnitude, Upside, and Surprise. Each is given a raw score that's recalculated every night and compiled into the Rank, and with this data, stocks are then classified into five groups, ranging from "Strong Buy" to "Strong Sell."The Focus List is comprised of stocks hand-picked from a long list of #1 (Strong Buy) or #2 (Buy) ranked companies, meaning that each new addition boasts a bullish earnings consensus among analysts.Since stock prices respond to revisions, it can be very profitable to buy stocks with rising earnings estimates. By buying Focus List stocks, then, you're likely getting into companies whose future earnings estimates will be raised, potentially leading to price momentum.Focus List Spotlight: Lululemon (LULU)Founded in 1998 and based in Vancouver, Canada, lululemon athletica inc. is a yoga-inspired athletic apparel company that creates lifestyle components. The company designs, manufactures and distributes athletic apparel and accessories for women, men and female youth.LULU, a #1 (Strong Buy) stock, was added to the Focus List on December 12, 2017 at $73.64 per share. Since then, shares have increased 420.51% to $383.30.12 analysts revised their earnings estimate higher in the last 60 days for fiscal 2022, while the Zacks Consensus Estimate has increased $0.47 to $6.94. LULU also boasts an average earnings surprise of 24.1%.Earnings for LULU are forecasted to see growth of 47.7% for the current fiscal year as well.Reveal Winning StocksUnlock all of our powerful research, tools and analysis, including the Zacks #1 Rank List, Equity Research Reports, Zacks Earnings ESP Filter, Premium Screener and more, as part of Zacks Premium. You'll quickly identify which stocks to buy, hold and sell, and target today's hottest industries, to help improve the performance of your portfolio. Gain full access now >> Breakout Biotech Stocks with Triple-Digit Profit Potential The biotech sector is projected to surge beyond $775 billion by 2024 as scientists develop treatments for thousands of diseases. They’re also finding ways to edit the human genome to literally erase our vulnerability to these diseases. Zacks has just released Century of Biology: 7 Biotech Stocks to Buy Right Now to help investors profit from 7 stocks poised for outperformance. Our recent biotech recommendations have produced gains of +50%, +83% and +164% in as little as 2 months. The stocks in this report could perform even better.See these 7 breakthrough stocks 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 lululemon athletica inc. (LULU): Free Stock Analysis Report To read this article on Zacks.com click here. Zacks Investment Research