In the latest trading session, Gilead Sciences (GILD) closed at $65.39, marking a +0.17% move from the previous day. This change outpaced the S&P 500's 0.06% loss on the day. At the same time, the Dow lost 0.1%, and the tech-heavy Nasdaq lost 0.1%.Coming into today, shares of the HIV and hepatitis C drugmaker had gained 0.76% in the past month. In that same time, the Medical sector lost 2.31%, while the S&P 500 gained 4.3%.Investors will be hoping for strength from GILD as it approaches its next earnings release, which is expected to be May 2, 2019. The company is expected to report EPS of $1.61, up 8.78% from the prior-year quarter. Our most recent consensus estimate is calling for quarterly revenue of $5.29 billion, up 4.03% from the year-ago period.Looking at the full year, our Zacks Consensus Estimates suggest analysts are expecting earnings of $6.64 per share and revenue of $22.01 billion. These totals would mark changes of -0.45% and -0.55%, respectively, from last year.Investors should also note any recent changes to analyst estimates for GILD. These revisions typically reflect the latest short-term business trends, which can change frequently. As a result, we can interpret positive estimate revisions as a good sign for the company's business outlook.Research indicates that these estimate revisions are directly correlated with near-term share price momentum. Investors can capitalize on this by using the Zacks Rank. This model considers these estimate changes and provides a simple, actionable rating system.Ranging from #1 (Strong Buy) to #5 (Strong Sell), the Zacks Rank system has a proven, outside-audited track record of outperformance, with #1 stocks returning an average of +25% annually since 1988. Within the past 30 days, our consensus EPS projection remained stagnant. GILD is currently sporting a Zacks Rank of #3 (Hold).In terms of valuation, GILD is currently trading at a Forward P/E ratio of 9.82. For comparison, its industry has an average Forward P/E of 21.57, which means GILD is trading at a discount to the group.We can also see that GILD currently has a PEG ratio of 3.85. 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. Medical - Biomedical and Genetics stocks are, on average, holding a PEG ratio of 2 based on yesterday's closing prices.The Medical - Biomedical and Genetics industry is part of the Medical sector. This industry currently has a Zacks Industry Rank of 55, which puts it in the top 22% of all 250+ industries.The Zacks Industry Rank gauges the strength of our individual industry groups by measuring the average Zacks Rank of the individual stocks within the groups. Our research shows that the top 50% rated industries outperform the bottom half by a factor of 2 to 1.You can find more information on all of these metrics, and much more, on Zacks.com.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 Gilead Sciences, Inc. (GILD): Free Stock Analysis Report To read this article on Zacks.com click here. Zacks Investment Research