Momentum investing revolves around the idea of following a stock's recent trend in either direction. In the 'long' context, investors will be essentially be "buying high, but hoping to sell even higher." With this methodology, taking advantage of trends in a stock's price is key; once a stock establishes a course, it is more than likely to continue moving that way. The goal is that once a stock heads down a fixed path, it will lead to timely and profitable trades.Even though momentum is a popular stock characteristic, it can be tough to define. Debate surrounding which are the best and worst metrics to focus on is lengthy, but the Zacks Momentum Style Score, part of the Zacks Style Scores, helps address this issue for us.Below, we take a look at Equity Residential (EQR), which currently has a Momentum Style Score of B. We also discuss some of the main drivers of the Momentum Style Score, like price change and earnings estimate revisions.It's also important to note that Style Scores work as a complement to the Zacks Rank, our stock rating system that has an impressive track record of outperformance. Equity Residential currently has a Zacks Rank of #2 (Buy). Our research shows that stocks rated Zacks Rank #1 (Strong Buy) and #2 (Buy) and Style Scores of A or B outperform the market over the following one-month period.You can see the current list of Zacks #1 Rank Stocks here >>>Set to Beat the Market?In order to see if EQR is a promising momentum pick, let's examine some Momentum Style elements to see if this real estate investment trust holds up.Looking at a stock's short-term price activity is a great way to gauge if it has momentum, since this can reflect both the current interest in a stock and if buyers or sellers have the upper hand at the moment. It's also helpful to compare a security to its industry; this can show investors the best companies in a particular area.For EQR, shares are up 2.51% over the past week while the Zacks REIT and Equity Trust - Residential industry is up 1.8% over the same time period. Shares are looking quite well from a longer time frame too, as the monthly price change of 7.17% compares favorably with the industry's 6.43% performance as well.While any stock can see its price increase, it takes a real winner to consistently beat the market. That is why looking at longer term price metrics -- such as performance over the past three months or year -- can be useful as well. Shares of Equity Residential have increased 15.05% over the past quarter, and have gained 52.08% in the last year. On the other hand, the S&P 500 has only moved 4.8% and 35.53%, respectively.Investors should also pay attention to EQR's average 20-day trading volume. Volume is a useful item in many ways, and the 20-day average establishes a good price-to-volume baseline; a rising stock with above average volume is generally a bullish sign, whereas a declining stock on above average volume is typically bearish. EQR is currently averaging 1,625,131 shares for the last 20 days.Earnings OutlookThe Zacks Momentum Style Score encompasses many things, including estimate revisions and a stock's price movement. Investors should note that earnings estimates are also significant to the Zacks Rank, and a nice path here can be promising. We have recently been noticing this with EQR.Over the past two months, 4 earnings estimates moved higher compared to none lower for the full year. These revisions helped boost EQR's consensus estimate, increasing from $2.76 to $2.79 in the past 60 days. Looking at the next fiscal year, 3 estimates have moved upwards while there have been no downward revisions in the same time period.Bottom LineGiven these factors, it shouldn't be surprising that EQR is a #2 (Buy) stock and boasts a Momentum Score of B. If you're looking for a fresh pick that's set to soar in the near-term, make sure to keep Equity Residential on your short list. Bitcoin, Like the Internet Itself, Could Change Everything Blockchain and cryptocurrency has sparked one of the most exciting discussion topics of a generation. Some call it the “Internet of Money” and predict it could change the way money works forever. If true, it could do to banks what Netflix did to Blockbuster and Amazon did to Sears. Experts agree we’re still in the early stages of this technology, and as it grows, it will create several investing opportunities. Zacks’ has just revealed 3 companies that can help investors capitalize on the explosive profit potential of Bitcoin and the other cryptocurrencies with significantly less volatility than buying them directly. See 3 crypto-related 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 Equity Residential (EQR): Free Stock Analysis Report To read this article on Zacks.com click here.