Why Is the Stock Market Down Today? The Top 3 Factors Behind the Sensex and Nifty 50 Fall on 8 October, How Much Each Matters, Why IT Stocks Rose 1.8% and Whether the Pressure Can Last

8 Oct: Nifty 50 -0.76%, Sensex -0.63%, IT +1.8% led by TCS. 3 factors: RBI calibrated tightening, crude near $101, global yields and Fed minutes. FIIs sold Rs 6,121 cr.

Updated: 8 Oct 2026 • 11:17 am

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Why Is the Stock Market Down Today? The Top 3 Factors Behind the Sensex and Nifty 50 Fall on 8 October, How Much Each Matters, Why IT Stocks Rose 1.8% and Whether the Pressure Can Last

Quick Answer

The answer to why is the stock market down today is that the Nifty 50 fell about 0.76% and the Sensex about 0.63% on 8 October, extending Wednesday's loss, because of three factors: the RBI's hawkish rate hike with a shift to calibrated tightening, crude oil near $101 and rising global bond yields with Federal Reserve minutes pointing to another US hike. Foreign investors sold Rs 6,121 crore on Wednesday, which made each of these worse, while the Nifty IT index rose about 1.8% led by TCS ahead of its results, which limited the fall. By my calculation from the reported percentages the Nifty is near 22,431 and the Sensex near 72,181, about 1.1% above the Nifty's 52-week low of 22,182.55, so the market is close to its lows. The RBI stance is the factor most likely to last, since it signals no rate cut soon, while oil and yields can reverse quickly.

Why is the stock market down today is the question after the market gave up the gains of the previous two sessions, when weak US jobs data and easier crude had lifted it. The three drivers that supported the market earlier this week, a lower chance of a Fed hike, easier oil and a calmer RBI, have all turned the other way.

If you want a quick, ranked answer, this article covers why is the stock market down today in three factors, the Sensex and Nifty fall of 0.63% and 0.76%, the RBI hawkish hike to 5.50% with calibrated tightening, crude oil prices near $101, global yields and Fed minutes, FII selling of Rs 6,121 crore, the TCS-led IT rise, key levels such as the 52-week low of 22,182.55 and what to watch next.

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Table of Contents

Why Is the Stock Market Down Today? The Numbers

Measure	Level	Note
Nifty 50	Down about 0.76%, near 22,431	From the 7 October close of 22,603.05; level is my calculation
Sensex	Down about 0.63%, near 72,181	From the 7 October close of 72,638.70; level is my calculation
Nifty IT	Up about 1.8%	Led by TCS, HCL Tech, Tech Mahindra and Infosys
Open on 8 October	Nifty opened at 22,599.05, the day's high	Sellers took control from the start
Nifty Midcap Select	Down about 1.1% early	Broader market weaker than the benchmark
Nifty 52-week low	22,182.55	The Nifty is about 1.1% above it
Previous session	Sensex fell 429.11 points; Nifty fell 173.05 points	7 October, after the RBI decision

The question why is the stock market down today has a short answer in the table: the Sensex and Nifty fall began at the open, sellers have been in charge since, and only IT has resisted.

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Why Is the Stock Market Down Today? The Three Factors Ranked

Rank	Factor	What happened	How much it matters	Can it last?
1	The RBI hawkish hike	A unanimous 25 bps hike to 5.50% and a surprise shift to calibrated tightening from neutral	High	Yes; the stance rules out a cut soon and a December hike is expected by some
2	Crude oil near $101	Brent rose again on tanker attacks near the Strait of Hormuz and a weak rupee near 97	High	Partly; oil can reverse on a supply release or a ceasefire headline
3	Global yields and Fed minutes	US 10-year yield touched 5.36% and settled near 5.28%, and Fed minutes said another hike may be needed	Medium to high	Partly; yields move with US data and the Fed

Foreign selling is the thread that ties them together: FIIs sold Rs 6,121 crore on Wednesday while DIIs bought Rs 4,597 crore, so why is the stock market down today is partly a question of who is willing to buy the dips.

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Factor 1 in Why Is the Stock Market Down Today: The RBI Hawkish Hike

Item	Detail
Repo rate	5.50%, up 25 bps, the first hike since February 2023
Stance	Calibrated tightening, effectively ruling out a rate cut soon
Other rates	Standing deposit facility 5.25%; marginal standing facility and bank rate 5.75%
Forecasts	GDP 7.1% for FY27, up from 6.7%; CPI 5.2%, up from 5.0%
Who is hurt	Lenders such as Bajaj Finance and Bajaj Finserv, insurers like SBI Life, and borrowers in autos and real estate
Market view	Goldman Sachs, SBI Research and Nomura expect another 25 bps in December

The hike was expected, but the stance change was not, so the first factor in why is the stock market down today is a reset in the rate outlook and not the rate itself.

Factor 2 in Why Is the Stock Market Down Today: Rising Crude Oil Prices

Brent is near $101, up about 50% from a year ago, and India imports most of its crude.
A weak rupee near 97 raises the rupee cost of every barrel.
Higher crude lifts production and logistics costs for companies just before the earnings season.
Airlines such as InterGlobe Aviation, paint and chemical makers and consumer companies are most exposed.
Oil also feeds inflation, which supports the RBI's tighter stance and makes the first factor worse.

This is why crude appears in almost every answer to why is the stock market down today, since it hits the economy, the rupee and the RBI at once.

Factor 3 in Why Is the Stock Market Down Today: Global Yields and the Fed

Item	Detail
US 10-year yield	Touched 5.36% and settled near 5.28%, close to a 24-year high
Fed minutes	Indicated that another US rate increase may be needed this year
Wall Street	Retreated from its record on 7 October; the Dow fell 0.66%
Asia	The Nikkei, Kospi, Hang Seng and Shanghai were lower
Effect on India	Higher US yields draw money away from emerging markets and pressure the rupee

Analysts quoted on the day say that a tighter RBI followed by Fed minutes could limit risk appetite, which is the global leg of why is the stock market down today.

Why IT Stocks Rose While the Market Fell

Stock	Move	Why
TCS	Up about 2.2% early, to about Rs 2,126	Results due after market hours; stock down 35% in 2026
HCL Tech	Up about 2%	Read-through from TCS
Tech Mahindra and Infosys	Higher	Sector bounce and a weak rupee that helps exporters
Nifty IT	Up about 1.8%	Offset part of the fall in the benchmark

IT is the exception in why is the stock market down today because its revenue is in dollars and the sector is oversold, but the gains depend on the TCS results holding up.

Who Lost in the Fall That Explains Why Is the Stock Market Down Today

Group	Examples	Reason
Rate-sensitive lenders	Bajaj Finance, Bajaj Finserv, SBI Life	Funding costs and a tighter stance
Crude-exposed names	InterGlobe Aviation, Adani Ports	Fuel costs and trade exposure
High-multiple stocks	ITC and Bharat Electronics	Valuation sensitive to yields
Power and metals	NTPC, Coal India, Tata Steel	Broad weakness in cyclicals
Mid-caps	Nifty Midcap Select down about 1.1%	Liquidity and sentiment

Mid-caps fell more than the benchmark, which shows that the answer to why is the stock market down today is wider than the large-cap indices.

Nifty Levels While Asking Why Is the Stock Market Down Today

Level	Type	Note
22,603	Previous close	First resistance on a rebound
22,546	Low on 7 October	Now resistance after the break
22,431	Near the current level	My calculation from the percentage fall
22,303	Support from one provider	About 0.6% below the current level
22,182.55	52-week low	Key support; a break would be a new low

These are reference levels and not recommendations, and the 52-week low is the line that decides whether the question why is the stock market down today turns into a bigger correction.

Risks If You Are Asking Why Is the Stock Market Down Today

Another leg down: A break below 22,182.55 would turn the answer to why is the stock market down today into a new low for the year.

Hawkish follow-through: A December hike would extend the RBI's tightening and keep the question why is the stock market down today alive.

Oil spike: A jump in Brent above $105 would raise inflation and the rupee risk.

Foreign outflows: FII selling of Rs 6,000 crore a day cannot be absorbed for long.

Event risk: TCS and other Q2 results can change sector moves quickly.

What to Watch Next After Asking Why Is the Stock Market Down Today

TCS's Q2 results after market hours and the reaction on 9 October.
FII and DII data for 8 October.
Brent crude and the rupee against the 97 mark.
US yields and the next Fed signals.
September CPI inflation and the RBI's guidance for December.

Conclusion

Why is the stock market down today? The RBI's hawkish hike with a calibrated tightening stance, crude near $101 and rising global yields with Fed minutes pushed the Nifty 50 down about 0.76% and the Sensex about 0.63%, while IT rose 1.8%. The RBI stance is the most durable factor, and the Nifty's 52-week low of 22,182.55 is the level to watch. Consult a SEBI-registered advisor before making any decision.

Disclaimer: Data and figures in this article are sourced from publicly available information. These may or may not be accurate. Please verify all data with the official NSE (nseindia.com) and BSE (bseindia.com) websites before making any investment decision. Investments in securities are subject to market risk. This content is for educational purposes only and is not investment advice by Univest (SEBI RA INH000013776).

Frequently Asked Questions

Why is the stock market down today?

Ans. On why is the stock market down today, the Sensex and Nifty 50 are down because of the RBI's hawkish hike and calibrated tightening stance, crude oil near $101 and rising global yields with Fed minutes.

How big is the Sensex and Nifty fall?

Ans. In why is the stock market down today terms, the Nifty 50 fell about 0.76% and the Sensex about 0.63%, which is about 22,431 and 72,181 by my calculation.

Why did IT stocks rise?

Ans. Though why is the stock market down today is the headline question, the Nifty IT index rose about 1.8% led by TCS ahead of its Q2 results, helped by a weak rupee and an oversold sector.

Which factor matters most?

Ans. In why is the stock market down today, the RBI's stance matters most, since it rules out a rate cut soon, while oil and yields can reverse faster.

What are FIIs doing?

Ans. FIIs sold Rs 6,121 crore on 7 October while DIIs bought Rs 4,597 crore.

How close is the Nifty to its low?

Ans. About 1.1% above its 52-week low of 22,182.55.

What could end the fall?

Ans. Easier crude oil prices, softer US yields, a firm TCS result or FII buying could help stabilise the market.

Should I sell if the stock market is down today?

Ans. This article does not constitute investment advice. The answer to why is the stock market down today can change quickly. Consult a SEBI-registered financial advisor.