What a 6th straight weekly decline actually means

Headlines love a scary streak number. What the number actually tells you, and what it doesn't, is a different question.

Key takeaways

• Nifty fell 0.22% and Sensex fell 0.65% in the week ending September 18, 2026, marking six straight weekly declines, the longest run since the Covid-driven selloff of February-March 2020 (HDFC Sky, 2026).

• The slide was driven by crude oil above $100 a barrel, a September Fed rate hike under new chair Kevin Warsh, rising global bond yields, and a record year for foreign investor selling (In The Money by Zerodha, 2026).

• Foreign portfolio investors had already pulled ₹2.32 lakh crore out of Indian equities by early September, more than the whole of 2025 (Free Press Journal, 2026).

• The very next session after the streak ended, Sensex jumped 564 points and Nifty gained 68 points, a reminder that a losing streak's length says little about what happens next (HDFC Sky, 2026).
  

What actually happened over these six weeks?

In the week ending September 18, 2026, Nifty slipped 0.22% and Sensex fell 0.65%, closing out six straight weekly declines and the longest losing run for Indian benchmarks since 2020 (Business Recorder, 2026).

What's easy to miss in the "longest since 2020" framing is the size of the moves involved. The final week of the streak lost roughly a fifth of one percent on Nifty, not the kind of drop that shows up on a chart as a cliff. This has been a grind lower, not a rout, six separate weeks where sellers narrowly outnumbered buyers rather than one sustained wave of panic selling (Weekly Market Metrics, 2026).

Why did the market slide for six weeks straight?

Four forces overlapped to produce the streak, and none of them is unique to India. Brent crude has traded above $100 a barrel on Middle East tensions, directly threatening India's import bill and inflation outlook since the country buys most of its oil abroad (Business Recorder, 2026).

At the same time, the US Federal Reserve delivered its first rate hike since 2023, a 25-basis-point move under new Fed chair Kevin Warsh that took the federal funds rate to 3.75-4%, with more hikes flagged for later this year (Weekly Market Metrics, 2026). Higher US rates pulled the rupee toward 96 to the dollar and pushed US 10-year Treasury yields above 5%, both of which make Indian equities look less attractive next to safer, higher-yielding dollar assets (Weekly Market Metrics, 2026).

Foreign investors responded by pulling money out at a pace that's now historic. FPI outflows from Indian equities hit ₹2.32 lakh crore by the first week of September 2026, already ahead of the ₹1.66 lakh crore withdrawn across all of 2025 (Free Press Journal, 2026). A packed IPO calendar added to the squeeze: strong demand for the $2.3 billion NSE IPO alone drained liquidity out of the secondary market during the final week of the streak (Business Recorder, 2026).

How does this compare with the 2020 losing streak?

The two streaks match in length but little else. The 2020 run happened as Covid-19 shut down economies worldwide, with weekly losses running into double digits and volatility spiking to extremes. This one has unfolded with India VIX, the market's fear gauge, actually cooling 7.3% to 11.39 during the final week of the streak (Weekly Market Metrics, 2026).

That's an unusual combination: a record-length losing streak alongside a calm, even falling, fear gauge. It points to a market where investors are quietly rotating out of Indian equities over rates and oil, not one bracing for a shock. The mechanism matters as much as the label. A six-week grind driven by global rate expectations behaves very differently from a six-week slide driven by a health crisis, even if news headlines describe both the same way.

Does a losing streak predict what happens next?

Not on its own. The session immediately after the sixth losing week ended, Sensex jumped 564 points, or 0.76%, to close at 74,858.99, while Nifty added 68 points, or 0.29%, to 23,414.30 (HDFC Sky, 2026).

One market strategist described the bounce as bargain buying after oversold conditions rather than a genuine shift in sentiment, noting the move looked technical rather than a signal that the underlying pressures had eased. A streak counts consecutive down weeks. It says nothing about the size of those declines, what's driving them, or whether the conditions behind them are close to changing, which is exactly why the seventh week matters more than the label attached to the sixth.

What should investors watch next?

A handful of specific dates and decisions will likely determine whether the streak proves to be a pause or the start of something longer. Presidents Trump and Xi are scheduled to meet in Washington on September 24, their second meeting this year, with tariffs, critical minerals, AI, and Taiwan expected to dominate the agenda (Weekly Market Metrics, 2026).

Separately, a newly passed Russia-Iran sanctions act gives the US president authority to impose tariffs of up to 100% on buyers of Russian oil and gas, a category that includes India, adding a fresh layer of trade risk on top of the existing tariff picture (Weekly Market Metrics, 2026). With the 2025 Busan tariff truce expiring in November, both Washington and Beijing face pressure to extend it. Domestically, a weaker rupee and elevated inflation have raised the odds that the RBI hikes rates in October or December, which would mark a reversal after a period of rate cuts and add another headwind to equities already under pressure from global rates (Weekly Market Metrics, 2026).

Frequently asked questions

Is a losing streak the same thing as a crash?
No. A streak counts consecutive down weeks regardless of size. This one has moved in fractions of a percent most weeks, closer to a slow grind than the double-digit weekly drops seen in the 2020 Covid crash (Weekly Market Metrics, 2026).

Why did Indian markets fall even as US markets were mixed?
India faces country-specific pressures on top of global ones: a heavier oil-import bill as crude tops $100, a weaker rupee, and near-record foreign investor selling, all layered on top of the same Fed rate-hike cycle pressuring markets everywhere (Business Recorder, 2026).

What is FPI selling, and why does it move the market so much?
Foreign portfolio investors are overseas funds that buy and sell Indian shares. Their trading volumes are large enough that sustained selling by this group, ₹2.32 lakh crore so far in 2026, can outweigh buying from domestic investors and drag the whole market lower (Free Press Journal, 2026).

Has the losing streak actually ended?
The first trading session after the sixth losing week closed higher, with Sensex up 0.76% and Nifty up 0.29%, but a single up day doesn't confirm a trend reversal, particularly with the Trump-Xi meeting and RBI rate decisions still ahead (HDFC Sky, 2026).

The bottom line

Six straight losing weeks is a real, verifiable fact, and also a fairly blunt one. It tells you sellers won more often than buyers did, across six separate weeks, for reasons that were mostly about oil prices and interest rates rather than anything specific to Indian companies. It doesn't tell you how sharp those losses were, how nervous the market actually got, or what happens in week seven, all of which matter more than the streak count itself.

Vijay InvestEdge Pvt. Ltd. is an AMFI-registered Mutual Fund Distributor (ARN-1777). Mutual fund investments are subject to market risks; please read all scheme-related documents carefully before investing. This content is for general informational purposes only and does not constitute investment advice.