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.One of our most popular services, Zacks Premium offers 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. All are useful tools to find what stocks to buy, what to sell, and what are today's hottest industries.It also includes the Focus List, a long-term portfolio of top stocks that have all the elements to beat the market.Breaking Down the Zacks Focus ListIf you could, wouldn't you jump at the chance for access to a curated list of stocks to kickstart your investing journey?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.Additionally, each selection is accompanied by a full Zacks Analyst Report, something that makes the Focus List even more valuable. The report explains in detail why each stock was picked and why we believe it's good 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 are expectations of growth and profitability, and are determined by brokerage analysts. Together with company management, these analysts examine every aspect that may affect future earnings, like interest rates, the economy, and sector and industry optimism.What a company will earn down the road also needs to be taken into consideration, and 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.Harnessing the power of earnings estimate revisions is where the Zacks Rank comes in. The Zacks Rank is a unique, proprietary stock-rating model that utilizes changes to a company's quarterly earnings expectations to help investors build a winning portfolio.The Zacks Rank consists of four main pillars: Agreement, Magnitude, Upside, and Surprise. Each one is given a raw score, which is recalculated every night and compiled into the Rank. Then, stocks are classified into five groups, ranging from "Strong Buy" to "Strong Sell," using this data.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.Because stock prices react to revisions, buying stocks with rising earnings estimates can be very profitable. Focus List stocks offer investors a great opportunity to get into companies whose future earnings estimates will be raised, potentially leading to price momentum.Focus List Spotlight: Winnebago Industries (WGO)Headquartered in Iowa, Winnebago Industries is a leading producer of recreational vehicles in the United States. The motorhomes or RVs are made in the company's vertically integrated manufacturing facilities in Iowa, while the travel trailer and fifth wheel trailers are produced in Indiana. Winnebago distributes its RV and marine products through independent dealers throughout the United States and Canada.On July 18, 2016, WGO was added to the Focus List at $23.30 per share. Shares have increased 214.72% to $73.33 since then, and the company is a #1 (Strong Buy) on the Zacks Rank.Five analysts revised their earnings estimate upwards in the last 60 days for fiscal 2022. The Zacks Consensus Estimate has increased $1.42 to $9.56. WGO boasts an average earnings surprise of 42.3%.Moreover, analysts are expecting WGO's earnings to grow 11.8% for the current fiscal year.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 >> More Stock News: This Is Bigger than the iPhone! It could become the mother of all technological revolutions. Apple sold a mere 1 billion iPhones in 10 years but a new breakthrough is expected to generate more than 77 billion devices by 2025, creating a $1.3 trillion market. Zacks has just released a Special Report that spotlights this fast-emerging phenomenon and 4 tickers for taking advantage of it. If you don't buy now, you may kick yourself in 2022.Click here for the 4 trades >>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 Winnebago Industries, Inc. (WGO): Free Stock Analysis Report To read this article on Zacks.com click here. Zacks Investment Research