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What Is a Stock Screener?

Tunji Onigbanjo
DataDrivenInvestor
Published in
3 min readSep 4, 2023

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Photo by REEET JANK on Unsplash

A stock screener is a powerful tool that allows investors to filter and select stocks based on specific criteria. These criteria can include fundamental metrics, technical indicators, sector, industry, market cap, and more. Think of it as a search engine for stocks that helps you narrow down your options.

Now that you know what a stock screener is, let’s explore why you should consider using one:

1. Efficient Decision-Making: Stock screeners save you time by quickly identifying stocks that meet your investment criteria. Instead of manually sifting through thousands of stocks, a few clicks can provide you with a tailored list of potential investments.

2. Objective Analysis: Stock screeners rely on data and algorithms, which reduces emotional bias in investment decisions. This objectivity can lead to more rational choices and better outcomes.

3. Diversification: By specifying your criteria, you can diversify your portfolio more effectively. For example, you can search for stocks from different sectors or industries to spread risk.

Not all stock screeners are created equal. Let’s explore the different types available:

1. Fundamental Screeners: These screeners focus on financial metrics like price-to-earnings (P/E) ratio, earnings per share (EPS), and dividend yield. Fundamental screeners are ideal for value investors looking for undervalued stocks.

2. Technical Screeners: Technical screeners analyze stock price charts and indicators like moving averages, relative strength, and volume. Traders and technical analysts use these tools to spot trends and patterns.

3. Custom Screeners: Some platforms allow you to create custom screeners tailored to your unique criteria. This flexibility is great for investors with specific preferences.

To make the most of your stock screener, it’s essential to understand the criteria you can use. Here are some popular ones:

1. Market Capitalization: Filter stocks by their market capitalization, which can range from small-cap to large-cap.

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