A stock analyst is a market professional with the skills to interpret financial data and the connections within companies to speak on the record with higher-ups. Analysts generally fall into one of two different camps: buy-side or sell-side. These positions will seem similar, but they tend to be employed by various institutions and have different responsibilities in their particular market "territories."
Buy-side analysts: Analysts on the buy side tend to work for funds, such as ETF providers or hedge funds. They don't dig as deeply into company financial data or conference calls as sell-siders. Instead, they focus on general areas or industries where their funds have vested interests. In addition, buy-side analysts often forge relationships with sell-side analysts for individual stock research. A buy-side analyst's primary goal is to find and utilize the most accurate and dependable sell-side analysts.
Sell-side analysts: If buy-side analysts work for funds (i.e., institutions that buy securities), you can probably guess which type of institution employs sell-side analysts. Brokers, banks and other firms that sell securities to investors use sell-side analysts to give reports to the public. While buy-side analysts also give ratings and price targets, the reported "buy" and "sell" ratings in financial media typically come from folks on the sell side.
Buy and sell-side analysts often use different rating systems when making their recommendations. You might even find two sell-side analysts with similar "buy" recommendations with vastly different price targets in the same stock. As a result, you'll need to familiarize yourself with the various methodologies analysts use to utilize their research correctly.