Using a stock screener to sift out the daily news flow

One of the most common challenges investors face today is sifting through the daily deluge of share market news that comes across financial newspapers, online portals and social media forwards. There are perspectives on everything, from inflation and sector-specific policies to global market shifts and scores of quarterly company results. For an investor trying to build a balanced portfolio, this constant stream of headlines and stock news can feel less like information and more like noise, and can also sometimes trigger some emotional and untimely investment decisions.

The big question then, before every investor, is how one can cut through this overwhelming information flow to shortlist the few fundamentally strong stocks that align with their personal investment goals. The answer lies in mastering a simple yet powerful digital tool, the stock screener.

What is a stock screener?

A stock screener is an online application or software tool that allows you to filter the entire universe of listed stocks on the basis of certain pre-defined criteria. So, instead of you doing the laborious exercise of manually going through thousands of stocks to find what you need, the screener does this for you in no time. For a simpler understanding, imagine the screener to be a digital catalogue that helps you sift through thousands of books in a big library to find the one you need. The real power of the stock screener lies in its ability to simultaneously process multiple financial and operational data points. It uses specific financial ratios and metrics as filters to narrow down the market.

Understanding key financial filters

While there are hundreds of data points available, some of the most effective screeners rely on these core metrics. You can combine multiple filters to find a list of stocks that you need to see. The list will be focused on what matches your exact investment philosophy.

Price-to-Earnings (P/E) Ratio: This famous valuation ratio tells you how much investors are willing to pay for every rupee of a company’s earnings. A P/E of 20, for instance, means investors are paying ₹20 for every ₹1 of annual earnings. By setting a low P/E filter, an investor can look for stocks that might be undervalued compared to their profits.

Market Capitalisation (Market cap): This is the total value of a company’s outstanding shares and is used to define company size – Large-Cap, Mid-Cap or Small-Cap. This filter is critical because the risk and potential return profile vary significantly across different cap sizes.

Dividend Yield: Dividend Yield is the ratio of a company’s annual dividend payment to its stock price, expressed as a percentage. This filter is essential for income-focused investors who rely on regular cash flow from their investments.

Return on Equity (ROE): ROE is a crucial profitability measure that shows how much profit a company generates with the money shareholders have invested. A consistently high ROE (eg. above 15 per cent) can signal efficient management and a competitive advantage in the business.

Debt-to-Equity (D/E) Ratio: It measures the extent to which a company is funding its assets using debt rather than its own funds. A low D/E ratio is generally preferred as it suggests stronger financial stability and less risk.

Case studies: Practical screeners for different investor styles

An effective stock screener is customisable enough to serve investors with completely different goals. Here are two simplified case studies demonstrating how different investors use this tool:

Case Study 1: The ‘Value Investor’

Think of the Value Investor as someone who is a smart shopper, looking for good companies that the market has temporarily priced low. This style is about being patient and finding fundamental strength. The parameters for this investor would focus on quality and low cost. For example, they would set a low valuation by requiring the Price-to-Earnings (P/E) Ratio to be low. This filters out companies whose stock price is not very high compared to the profits they earn. They would also look for a strong balance sheet to ensure the company isn’t heavily reliant on loans, setting the Debt-to-Equity (D/E) Ratio to be low. Finally, they check for good management or profitability by looking for companies that are adept at making money from the owners' funds, setting the Return on Equity (ROE) on the higher side.

Case Study 2: The ‘Growth Investor’

The Growth Investor is interested in finding high-potential companies that are rapidly expanding their business and revenues. They are willing to pay a higher price today for a stock that promises exceptional growth in the future. The simple screener parameters for this investor would focus on rapid expansion and efficiency. They could set a filter for fast-growing sales. This confirms the business is aggressively gaining market share. They ensure the growth is profitable by setting a high profit margin, with a high Operating Profit Margin (OPM). A crucial valuation check for them is the PEG Ratio, which they would set to a low limit. This checks that the higher price they are paying is justified by the company’s expected high growth rate.

Some key takeaways

The stock screener can be an investor’s best friend to drive focus. The biggest mistake an investor can make is basing decisions on a single news event or a single-day stock price movement. By using a screener, you effectively codify your investment philosophy into objective numbers. Even as the stock screener can only offer suggestions and not be a guarantee for future returns, it can help significantly streamline your initial stock selection process. This can help make your investment journey faster and more disciplined.

Note to the Reader: This article has been produced on behalf of the brand by HT Brand Studio and does not have journalistic/editorial involvement of Mint.