Shares of PI Industries fell sharply on 5 November 2026 after the company reported a weak September quarter. According to NDTV Profit, its net profit dropped 70.1% year-on-year to ₹122 crore, from ₹409 crore in the same quarter last year.

The fall stood out because the wider market had a strong day. NDTV Profit's live updates showed the Sensex up 1,600 points. This is a clear reminder for a new investor. One company's results can move its shares very differently from the index.

What happened

PI Industries announced its results for the second quarter, or Q2, of the financial year. In India, the financial year runs from April to March, so Q2 covers July to September. After the numbers came out, the stock fell to a 52-week low, NDTV Profit reported.

According to the report, the sell-off followed weak quarterly performance. Profit fell steeply. The company's margins also nearly halved compared with a year ago. The Hindu BusinessLine also named PI Industries among the stocks that fell, in its live coverage of the day's Q2 results.

The numbers

ItemQ2 last yearQ2 this year
Net profit₹409 crore₹122 crore
Change from a year ago-Down 70.1%
Fall in rupees (our calculation)-₹287 crore

The table shows the profit figures reported by NDTV Profit. The fall in rupees is our calculation from those two numbers.

Net profit is the money a company keeps after paying all costs, interest and taxes. By our calculation, ₹122 crore is about 30% of ₹409 crore. In simple words, the company earned less than a third of the profit it made in the same quarter a year earlier.

The report also said margins nearly halved. A margin shows how much of each ₹100 of sales a company keeps as profit. Take a shop that sells goods worth ₹100 and keeps ₹20. Its margin is 20%. If it keeps only ₹10, the margin has halved.

The reports did not give the exact margin figures. They also did not give the company's revenue, which is the total money it earns from sales. Without these, we cannot say whether profit fell because of lower sales, higher costs or both. The full results filing on the BSE or NSE website will have these details.

How much did the shares fall?

The reports gave two different figures for the fall. One NDTV Profit report said PI Industries shares fell 10% to a 52-week low. A separate NDTV Profit live update said the stock slid 14%. We could not confirm which figure is right. Readers can check the stock's price data and the company's filings on the BSE or NSE website.

A strong market, a weak stock

The drop came on a day when buyers were active across the market. According to NDTV Profit, the Sensex was up 1,600 points and the Nifty traded above 24,400. Ashok Leyland gained 9%. Among stocks on the BSE, IndiGo led with a 6% gain, followed by Asian Paints at 5%. Bharti Airtel was the only loser in that group.

The Hindu BusinessLine listed BSE, Lenskart, Premier Energies, Biocon and Apollo Tyres among the gainers. Nykaa and Cummins India fell along with PI Industries. Several big names were due to announce Q2 results the same day. These included Bharti Airtel, LIC, Titan, M&M, ONGC and Britannia.

You can read our preview of Bharti Airtel's Q2 results, an earlier story on IndiGo's share moves, and more on stock market trends.

Why it matters to a common investor

A 70.1% fall in profit is large for any company. Share prices often react to how results compare with what investors expected, not just to the numbers themselves. When profit and margins fall together, investors may worry that the business is earning less on each rupee of sales.

A 52-week low only tells you the stock is at its lowest price in a year. It does not tell you whether the stock is cheap or costly. A price can stay low or fall further if the business stays weak. It can also recover if results improve. Nobody can know this in advance.

If you own the shares, reading the full results is more useful than reacting to one headline. Look at revenue, costs, margins and what the management says about the coming months. Our results section explains how to read quarterly numbers in simple words. A day like this also shows why many investors spread their money across several companies and sectors. Then one weak result does not hurt the whole portfolio.

Risks to keep in mind

  • One quarter is a short period. The reports did not say whether the fall in profit came from one-time reasons or longer-lasting ones.
  • A stock that falls 10% or more in one day can keep moving sharply in the next few sessions, in either direction.
  • Important details are missing from the early reports. These include revenue, exact margins and the company's own explanation.
  • Reports gave different figures for the share fall. Check exchange data before relying on any one number.

What to watch next

  • The full results filing on the BSE or NSE website, with revenue and margin figures.
  • Comments from the management on why profit and margins fell.
  • Views from brokerages. At the time of writing, we did not see analyst comments on these results.
  • How the share price moves in the coming days compared with the Sensex and Nifty.

Words explained

  • Net profit: The money a company keeps after paying all its costs, interest and taxes.
  • Year-on-year: A comparison with the same period one year earlier. Here, this year's Q2 is compared with last year's Q2.
  • Margin: The share of sales a company keeps as profit. It is usually shown as a percentage.
  • Revenue: The total money a company earns from selling its goods or services, before costs.
  • 52-week low: The lowest price at which a stock has traded in the past one year.
  • Sell-off: When many investors sell a stock at the same time, pushing its price down.
  • Sensex: An index of 30 large companies listed on the BSE. It shows the general mood of the market.
  • Nifty: The Nifty 50 is an index of 50 large companies listed on the NSE.
  • Q2: The second quarter of India's financial year, covering July to September.

Sources: NDTV Profit, The Hindu BusinessLine.

This article is for information and education only. It is not investment advice. MarketUpDown is not registered with SEBI as an investment adviser or research analyst. Read our disclaimer.