Bonus Share Explained: Why Searches Spiked 1,000% in India's Late-September Corporate Action Week

Google Trends India recorded roughly a 1,000% jump in searches for "bonus share" — about 5,000 searches in 24 hours — around September 26–27, 2026, as around 10 companies lined up record dates for bonus issues and dividends between September 28 and October 1. Those dates have now passed, but the question behind the spike remains evergreen: what does a bonus share actually do to your holding, and how is it different from a dividend?

What triggered the 'bonus share' search spike

According to The Economic Times (September 27, 2026), the holiday-shortened week of September 28 to October 1 saw around 10 companies fix record dates for dividends and bonus issues, with the market shut on October 2 for Mahatma Gandhi Jayanti. Two 1:1 bonus issues anchored the interest: textile maker Aastha Spintex set September 28 as its record date, while Maestros Electronics & Telecommunications Systems fixed October 1. The same week, SAIL fixed September 30 as the record date for a final dividend of Rs 2.35 per share, and Indraprastha Gas (IGL) went ex-record date on October 1 for a Rs 1.5 per share final dividend, per Upstox citing BSE data. Natco Pharma was also scheduled for a rights issue and K M Sugar Mills for a spin-off on October 1.

What a bonus share actually is

A bonus issue is a distribution of free additional shares to existing shareholders, paid out of the company's reserves. In a 1:1 bonus — the ratio both Aastha Spintex and Maestros Electronics announced — you receive one extra share for every one share you hold on the record date. Crucially, as ET explains, the value of each share falls in proportion, so doubling your share count does not double your wealth: the company's market capitalisation stays the same. If a stock traded at Rs 200 before a 1:1 bonus, it would adjust to roughly Rs 100, and your two shares would be worth about the same as your one share before. Companies typically use bonus issues to improve liquidity and make the share price more affordable for smaller investors, and the move is often read as a sign of healthy reserves.

Record date vs ex-date: who is eligible

Eligibility hinges on two dates. The record date is when the company checks its shareholder register; the ex-date is the first trading day on which a buyer is no longer entitled to the corporate action. Under India's T+1 settlement, you must buy the share at least one trading day before the record date for it to reach your demat account in time. As Upstox noted, Aastha Spintex shareholders needed to hold the stock by the Friday session before its Monday, September 28 record date. ET put it simply: investors must hold the shares in their demat accounts on the respective record dates to be eligible.

Bonus share vs dividend: the key difference

The late-September week illustrated both: SAIL's Rs 2.35 payout put cash in shareholders' hands, while Aastha Spintex's 1:1 bonus doubled share counts without changing overall value.

What investors should keep in mind

A bonus issue is not free money — it is a restructuring of your existing holding. Google Trends data confirms search interest surged, but search volume says nothing about whether a bonus announcement makes a stock a good buy. Corporate action lists like the one ET published are also tentative, as more companies can announce record dates later. Before acting on any bonus or dividend announcement, verify the record date and ratio directly in the company's BSE or NSE filing, and consider consulting a SEBI-registered adviser for decisions specific to your portfolio.