Nifty's 7-Week Losing Streak: Oil & Bond Yields Explained

If you've opened your portfolio app every Friday evening since early August, you've probably developed a small flinch. You're not imagining it.

In the week ended September 25, 2026, the Nifty 50 fell for the seventh straight week, closing at 23,140.50. Over those seven weeks it lost about 5.8% — roughly 1,430 points. The last time the Nifty put together a losing streak this long was during the Covid crash of February–March 2020.

And Monday didn't bring relief. On September 28, the Sensex was down close to 1,000 points in afternoon trade, the Nifty slipped toward 22,825, and India VIX — the market's fear gauge — jumped about 15% intraday.

Here's the twist: the main reasons aren't really about India. They're about oil tankers near the Strait of Hormuz and a bond market 12,000 km away.

What happened

Three forces have been pushing on Indian stocks at the same time, according to reporting by Business Standard and Upstox:

• Oil stayed expensive. The prolonged US–Iran conflict and disruption around the Strait of Hormuz kept Brent crude above $100 a barrel for much of the month; it touched about $105–107 in the latest week and is up more than 37% over three months.
• US bond yields shot up. The 10-year US Treasury yield hit about 5.23% and the 30-year touched 5.48% — its highest since 2004.
• Foreign investors kept selling. FIIs were net sellers again, including about ₹3,694 crore on Friday alone, while domestic institutions partly cushioned the fall.

On top of that, a sector-specific jolt: an IRDAI consultation paper proposing caps on insurance distribution commissions triggered a sharp sell-off in insurance and insurance-platform stocks during the week.

Why a US bond matters to your Nifty SIP

This is the part most headlines skip, so let's slow down.

Imagine you're a global fund manager with ₹100 to invest. Option A: a US government bond paying about 5.2% a year, backed by the US government, in dollars. Option B: Indian stocks.

One way investors compare the two is the earnings yield — flip the P/E ratio upside down. If the Nifty's companies earn ₹5.11 for every ₹100 of share price, the earnings yield is 5.11%. Business Standard noted that the Nifty's earnings yield of about 5.11% is now below both the 10-year and 30-year US yields.

Add a weaker rupee (which shrinks a foreign investor's returns when converted back to dollars) and you can see why foreign ownership of Indian stocks has been sliding.

Why oil hits India harder than most

India imports most of the crude oil it uses. When oil jumps, the ripple effect is wide: a bigger import bill, pressure on the rupee, costlier transport and raw materials, and squeezed margins for companies from paints to airlines. ICRA estimated oil marketing companies were losing about ₹530 crore a day on fuel sales at these crude levels. We unpacked this chain reaction in our earlier piece on what $95 oil means for India.

Who benefits, who loses

• Hurting: oil-sensitive sectors, IT (down about 2.4% for the week), financials, insurance distributors, and mid- and small-caps, which tend to fall harder in risk-off phases.
• Holding up better: defensive sectors like FMCG, pharma, and consumer durables edged higher for the week, as investors hid in steadier businesses.
• Quietly benefiting: long-term SIP investors, who are buying more units at lower prices every month — the core idea behind rupee cost averaging.
• Most at risk: anyone using borrowed money or needing to sell soon, because they may have to exit at a low point.

What to watch next

• US–Iran talks. Reports suggest negotiators are exploring a phase-out of the conflict. Any real de-escalation that eases oil could change the mood quickly.
• US bond yields. If yields cool from multi-decade highs, the ‘free chai’ argument weakens.
• RBI's policy meeting (October 5–7). The repo rate is at 5.25% with a neutral stance. With oil and inflation risks up, markets will read the tone carefully. Our August policy preview explains what the MPC weighs.
• FII flows vs SIP flows. Domestic money has been the market's shock absorber; whether it holds up is the big domestic variable.

What this means for you

Seven weeks of red feels long. But losing streaks are a normal, recurring feature of equity markets — not a sign that investing “stopped working.” The 2020 streak this one is being compared to was followed by one of India's strongest recoveries, though past recoveries don't guarantee future ones.

The practical question isn't “Where will the Nifty be next week?” (nobody knows), but “Is my money matched to my time horizon?” Money you need within 1–3 years arguably shouldn't be in equity at all. Money for 7+ years can usually ride out phases like this. If you're tempted to hit pause, read should I stop my SIP? first, and check how continued investing compounds with our SIP calculator.

In short: India didn't suddenly get worse — the rest of the world got more tempting and more expensive at the same time. For long-term investors, these are the weeks that test patience more than portfolios.

Tell us: has this seven-week slide changed anything about how you invest — or are you sticking to the plan?