The IT bellwether fell to its 10% lower price band on Friday morning, erasing about ₹46,800 crore of market value on paper before recovering nearly all of the drop within the same minute. Here is what the data shows, what could have caused it, and what to watch before tonight’s Q2 results.

₹1,038.05 Low at 10:38 AM, 10.0% below the ₹1,153.35 close

₹46,792 cr Paper market cap erased at the low (estimate)

94% of the drop recovered by the minute’s close at ₹1,149.60

₹1,163.00 Price at 2:00 PM, +0.84% on the day

What Happened: A 10% Plunge and Rebound Within One Minute

Shares of Infosys had a firm start on Friday, with the Nifty IT index up nearly 3% at the open on buying ahead of the company’s September-quarter results. The stock opened near ₹1,180 and hit its day high of ₹1,197.80 at 9:16 AM. It then eased steadily to ₹1,166.85 by 10:30 AM and slipped to ₹1,157.05 by 10:37.

In the next minute, the 10:38 AM candle, the price collapsed to ₹1,038.05. That is almost exactly the 10% price band on Thursday’s close of ₹1,153.35, and Business Upturn reported it as a lower-circuit hit on both the NSE and BSE. The same candle closed at ₹1,149.60, and the next minute’s low was ₹1,146.10, the lowest price of the day outside the spike. By 2:00 PM the stock was at ₹1,163.00.

A fall of this size and speed, with an almost immediate reversal, looks more like a trading event than a reaction to news. No company announcement explains it.

Left: 1-minute closing prices with each minute’s high–low range shaded, 9:15 AM to 2:00 PM. Right: candlesticks for 10:30–10:46 AM. The dotted line marks the 10% lower price band. Source: NSE 1-minute price data for INFY (prices only, no volume).

Minute by Minute: The Infosys Timeline

TIME (IST)	PRICE	WHAT HAPPENED
9:15 AM	₹1,179.95	Opening candle; Nifty IT up nearly 3%
9:16 AM	₹1,197.80	Day high
10:30 AM	₹1,166.85	Gradual fade from the high
10:37 AM	₹1,157.05	Close of the last candle before the spike
10:38 AM	₹1,038.05	Low of the day, touching the 10% lower price band
10:38 AM	₹1,149.60	Close of the same one-minute candle
10:39 AM	₹1,146.10	Lowest price of the day outside the spike
2:00 PM	₹1,163.00	Back above Thursday’s close of ₹1,153.35

₹46,800 Crore Erased on Paper, Then Almost All of It Recovered

Infosys has roughly 405.8 crore shares, a figure derived from Kotak Neo’s published market cap of ₹4,68,061 crore at Thursday’s ₹1,153.35 close. On that base:

• At ₹1,038.05 the market cap was about ₹4.21 lakh crore, which is ₹46,792 crore below Thursday’s close.
• Measured from the ₹1,157.05 price just before the spike, the swing was about ₹48,293 crore.
• The loss was a paper figure that lasted under a minute. At the close of the 10:38 candle the stock was only 0.33% below Thursday’s close.
• At ₹1,163.00 at 2:00 PM the market cap was about ₹4.72 lakh crore, roughly ₹3,900 crore above Thursday’s close.

Who Is Most at Risk When a Stock Flash-Crashes

Spikes like this hurt traders whose orders execute at the extreme, because the price that triggered them vanishes seconds later.

• Holders with stop-loss orders placed anywhere between roughly ₹1,040 and ₹1,150 could have been sold out near the bottom and then seen the price return.
• Anyone selling at market during that minute risked a fill far from the last traded price.
• Leveraged and derivatives traders face the same risk, since a one-minute move can trigger margin calls. Infosys futures and options expire on 27 October, so positions are active this week.

Why Did Infosys Crash? What We Know, and What We Don’t

The cause has not been confirmed. No statement from the NSE, the BSE or Infosys explaining the move had been reported at the time of writing. Business Upturn, which reported it, said no explanation had been provided.

These are the factors that could plausibly explain a move like this. None is confirmed.

• An erroneous or oversized sell order. One large order, or a mistyped price, can sweep through the buy side of the order book until it hits the price band. A low that lands almost exactly on the 10% band is consistent with this. Business Upturn described the low as a single sell trade.
• A stop-loss cascade. Sell orders triggering one another can push the price down very quickly in a thin moment. The stock had been slipping for five minutes before the spike.
• An algorithmic or system fault. An automated trading system sending orders in error is another recurring cause of flash moves.
• A jittery results-day market. Infosys reports tonight, and its derivatives expire on 27 October. Broader sentiment was also fragile: Brent crude was above $113 a barrel and the Sensex was down about 0.8% by 11 AM. This is background, not evidence of a cause, since IT stocks were among the day’s gainers.

What Next for Infosys: Q2 Results Tonight and the Monday Test

• Q2 results tonight. Infosys reports its September-quarter results at about 3:45 PM IST, with a press conference at 4:30 PM and an analyst call at 6 PM. According to Business Today, the Bloomberg consensus is revenue of about ₹49,108 crore and net profit of about ₹7,904 crore, and the board will consider an interim dividend. Emkay expects a trim to the FY27 revenue growth guidance.
• An exchange or broker explanation. If one emerges, it will settle whether this was an error or a market event.
• The reaction on Monday. After a day that started 3% higher and then faded, the response to results and guidance is the larger risk for holders.

This article is for information only and is not investment advice. Market value figures use a share count derived from a broker’s published market cap and are estimates.

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