The Zacks REIT and Equity Trust - Retail industry, to which Realty Income Corp. belongs, has gained 8.5% over this period. Now the key question is: Where could the stock be headed in the near term?While media releases or rumors about a substantial change in a company's business prospects usually make its stock 'trending' and lead to an immediate price change, there are always some fundamental facts that eventually dominate the buy-and-hold decision-making.Revisions to Earnings EstimatesHere at Zacks, we prioritize appraising the change in the projection of a company's future earnings over anything else. That's because we believe the present value of its future stream of earnings is what determines the fair value for its stock.We essentially look at how sell-side analysts covering the stock are revising their earnings estimates to reflect the impact of the latest business trends.