Foreign portfolio investors (FPIs) turned net sellers on Indian exchanges in September 2026, offloading equities worth ₹14,474 crore through the secondary market up to 12 September, reversing the positive flows recorded in both July and August. Escalating Middle East tensions and a sharp surge in crude oil prices emerged as the primary catalysts behind the reversal, according to market participants.

FPI Outflows: Scale and Context

The ₹14,474 crore sell-off through exchanges marks a notable swing in sentiment after two consecutive months of net inflows. However, FPI participation through the primary market — initial public offerings and qualified institutional placements — has continued to hold up, with net investment of ₹1,336 crore recorded between 1 and 12 September. That brings total FPI primary market investment for 2026 to ₹47,183 crore, according to exchange data.

Analysts note that primary market flows tend to be more sticky than secondary market positioning, insulating the broader fundraising pipeline even as traders reduce exposure on exchanges.

Crude Oil and Geopolitical Headwinds Drive Selling

The dominant trigger, market participants say, was the flare-up in Middle East tensions, which drove Brent crude above $108 per barrel. Elevated energy prices have fed directly into inflation expectations, prompting concerns that global central banks — including the US Federal Reserve — may keep monetary policy tighter for longer. Higher bond yields that follow tend to erode the relative attractiveness of emerging-market equities, triggering FPI rotation out of markets like India.

This is not an isolated episode. Each significant escalation in the Iran-US standoff this year has been followed by a risk-off move in Indian equities, underscoring how exposed domestic markets remain to geopolitical shocks routed through the oil channel.

Nifty 50 Extends Losing Streak to Five Weeks

The sell-off weighed heavily on Indian benchmarks. The Nifty 50 extended its weekly losing streak to five consecutive weeks, with the decline described as broad-based — major sectors ended the week in the red. FII selling compounded the pressure, with analysts flagging it as a meaningful headwind for domestic equities in the near term.

Notably, domestic institutional investors (DIIs) stepped in to absorb a portion of the foreign selling, recording net purchases of ₹6,419.46 crore last week. That buying cushion helped limit further downside, preventing a sharper correction in the benchmark indices.

What Market Participants Are Watching

Looking ahead, analysts say FPI flows will be significantly shaped by the trajectory of the Iran-US conflict and its knock-on effect on crude prices. Persistently elevated crude keeps inflation risks alive, which in turn sustains upward pressure on bond yields globally. Rising yields reduce the appeal of riskier assets, with Indian equities squarely in the crosshairs.

Global macroeconomic and geopolitical variables — crude oil price movements, Middle East developments, and US monetary policy signals — are expected to remain the dominant drivers of market sentiment in the days ahead. Any de-escalation in the conflict could provide a meaningful floor for FPI inflows to resume.