Global markets are starting the session on a cautious note as Brent crude oil prices surged 5.6% to nearly $108 a barrel, while US equities extended their decline for a fourth consecutive session.

The rise in crude prices followed reports of attacks involving Saudi Arabia’s East-West Oil Pipeline and developments around Yemen’s port city of Mocha. At the same time, US Treasury yields moved sharply higher, Asian markets remained weak, and the Indian rupee slipped further against the US dollar.

For Indian investors, the combination of higher crude oil prices, elevated US bond yields, foreign selling and a weaker rupee could remain important market drivers.

Brent crude oil price rises sharply

Brent crude jumped 5.6% overnight, moving close to the $108-per-barrel mark.

Oil prices often react quickly to geopolitical developments because any potential disruption to production, transportation or supply routes can affect expectations around global oil availability.

The impact is particularly relevant for India because the country is heavily dependent on imported crude oil.

A sustained increase in crude prices can raise the cost of imports and put pressure on India’s trade balance. It can also increase input and transportation costs for businesses and create additional inflationary pressure.

For investors, the important question is whether the latest oil-price surge is a short-term reaction to geopolitical developments or the beginning of a more prolonged period of elevated crude prices.

Why higher crude matters for Indian stocks

Crude oil affects the Indian economy through several channels.

When international oil prices rise, Indian refiners, airlines, transportation companies and other fuel-intensive businesses can experience changes in their operating costs.

Higher crude prices can also influence inflation expectations. If fuel and transportation costs rise, the effect can spread to other parts of the economy.

The rupee can also come under pressure because India needs more dollars to pay for imported crude when oil prices rise.

This creates a chain reaction:

Higher crude prices → higher import costs → pressure on the rupee → potential inflationary pressure → impact on interest-rate expectations and equities.

However, the effect is not identical across every company. Businesses with different cost structures, pricing power, export exposure and currency exposure can respond differently to movements in crude oil.

Investors tracking the energy sector can also follow companies such as Oil India, Indian Oil Corporation and ONGC to understand how the broader energy market is reflected at the company level.

US markets extend four-session losing streak

The pressure was not limited to commodities.

The Nasdaq, Dow Jones and S&P 500 each declined around 0.5%, marking the fourth consecutive session of losses for US equities.

One of the biggest concerns was the sharp rise in US Treasury yields.

The 10-year Treasury yield increased by 11 basis points to 4.95%, while the 2-year yield climbed 13 basis points to 4.56%, its highest level since July 2024.

The 30-year Treasury yield also reached 5.34%, its highest level since June 2007.

Higher bond yields can affect equity markets because they can make fixed-income investments relatively more attractive while increasing the discount rate applied to future corporate earnings.

This can be particularly relevant for high-growth companies whose valuations depend heavily on expected future earnings.

Chip stocks fall as rate concerns return

The rise in yields was reflected in parts of the technology sector.

Chip stocks, including Intel and Micron, declined around 4–6%, as investors reassessed the potential impact of higher interest rates.

Technology and growth stocks can be sensitive to changes in bond yields because their valuations often depend on expectations of earnings further into the future.

Apple, however, moved in the opposite direction, gaining 3.6% following the launch of its first foldable smartphone.

The divergence highlights an important feature of the current market environment: broad market movements do not necessarily translate into identical performance across individual companies or sectors.

US inflation data adds to the uncertainty

US Producer Price Index inflation increased 0.4% month-on-month and 5.4% year-on-year in August.

Producer prices measure changes in prices received by producers for goods and services and are closely watched as one indicator of inflationary pressure.

The latest data comes at a time when markets are already monitoring interest-rate expectations closely.

If inflation remains persistent, expectations around monetary policy can change. Combined with higher crude prices, this creates an environment where investors may remain sensitive to incoming economic data.

For Indian markets, the significance extends beyond the US economy.

Changes in US interest-rate expectations can influence global bond yields, currency markets and foreign portfolio flows into emerging markets.

Nifty faces a cautious opening

Indian markets had managed to break a three-session losing streak in the previous session.

However, the headline movement needs to be viewed carefully because the indices underwent an adjustment related to the Closing Auction Session (CAS) mechanism.

The Nifty underwent an adjustment of nearly 100 points, while the Sensex was adjusted by approximately 300 points.

At 3:15 pm, the Nifty was at 23,389 before ending at 23,478.

The Nifty Bank stood at 56,262 at 3:15 pm and closed at 56,472.

The Sensex moved from 74,630 at 3:15 pm to a closing level of 74,903.

With Gift Nifty indicating a potential gap-down opening, investors may be watching whether the market absorbs the initial pressure or whether selling continues d

CAS mechanism remains in focus

The Closing Auction Session has become an important talking point among market participants, particularly around expiry-day price discovery.

The SEBI Chairman said that the process for determining closing prices based on CAS for derivatives on expiry day is being reworked.

He also noted that initial liquidity following the CAS rollout has been an issue, while liquidity generally develops over time.

Any changes to the mechanism could be significant for traders because the closing price has an important role in derivatives settlement.

As the framework evolves, market participants will be watching liquidity, price discovery and the behaviour of the indices around expiry.

FIIs sell while DIIs continue buying

Institutional flows provide another important piece of the market picture.

Foreign Institutional Investors were net sellers of ₹438.24 crore, while Domestic Institutional Investors purchased equities worth ₹1,025.85 crore.

The difference highlights the contrasting behaviour of foreign and domestic institutions.

FII flows can be influenced by global interest rates, crude prices, currency movements and broader emerging-market allocations. Domestic institutions, meanwhile, can provide buying support during periods when foreign investors are reducing exposure.

Investors can track the latest FII and DII activity to follow daily institutional buying and selling trends. Alice Blue’s data includes daily, weekly and monthly views of FII and DII cash-market activity.

However, one day’s institutional flow should not be treated as a standalone market signal. Sustained trends are generally more informative than individual sessions.

Rupee falls to ₹95.44 against the dollar

The Indian rupee also weakened, closing at ₹95.44 per US dollar, compared with Wednesday’s close of ₹95.11.

The currency is particularly important in the current environment because higher crude prices and a weaker rupee can reinforce each other.

Since crude oil is traded internationally in US dollars, a weaker rupee increases the domestic currency cost of imported oil.

At the same time, companies that earn a significant share of their revenue in dollars may experience a different impact from currency movements compared with companies that depend heavily on imported inputs.

This is why investors should consider a company’s export exposure, import dependence and currency sensitivity rather than assuming that a weaker rupee will affect every stock in the same way.

What should investors watch next?

The Indian market is heading into the session with several factors competing for attention.

1. Brent crude oil

The biggest immediate variable is whether Brent crude remains near the $108 level or gives back some of its recent gains.

2. US Treasury yields

A further rise in US bond yields could continue to influence global equity valuations and foreign flows.

3. FII activity

Continued foreign selling could add pressure to Indian equities, particularly if accompanied by weakness in global markets.

4. Rupee movement

Currency depreciation could increase the impact of elevated crude prices on India’s import bill.

5. CAS developments

Any changes to the expiry-day closing mechanism could influence derivatives trading and price discovery.

6. Global risk sentiment

Investors will also be watching Asian markets and US equity futures for clues about the broader risk environment.

The bigger picture for Indian investors

The latest market setup demonstrates how closely different parts of the global financial system are connected.

A geopolitical event can push crude oil prices higher. Higher crude can increase inflation and put pressure on the rupee. Changes in inflation expectations can influence bond yields and interest-rate expectations. Those developments can then affect equity valuations and FII flows.

For Indian investors, understanding these relationships can provide more context than looking at the Nifty’s opening level alone.

The immediate market focus will be on whether higher crude prices and global risk aversion translate into sustained selling pressure or whether domestic institutional buying provides support.

A gap-down opening may set the tone for the first part of the session, but the broader market trend will depend on how investors respond to crude prices, global yields, institutional flows and currency movements through the day.