Foreign institutional investors (FIIs) turned net sellers to the tune of ₹1,602 crore during the week ended 22 August, snapping three consecutive weeks of buying, even as domestic institutional investors (DIIs) remained steadfast buyers on all five trading sessions, pumping in ₹17,320 crore. The divergence underscored a cautious global mood driven by elevated crude oil prices and escalating US-Iran geopolitical tensions.

FII Activity: An Uneven Week

The week's FII flow was far from uniform, according to market analysts. Institutional foreign players opened with selling on Monday, switched to buying across the next two sessions, and then reverted to net selling over the final two days. The aggregate net outflow of ₹1,602 crore masked this volatility beneath a single headline number.

Notably, when viewed over the broader July 20 to August 21 window, FIIs were sellers in the first week, buyers over the following three weeks, and sellers again in the most recent week. Despite this choppiness, their cumulative activity over the past month resulted in net purchases of ₹1,282 crore. DIIs, by contrast, remained net buyers in every week of that period, aggregating purchases of ₹48,390 crore.

Month-to-Date Picture Remains Broadly Positive

Analysing August month-to-date data, market watchers noted that both FIIs and DIIs have been on the buying side overall. FIIs have added a net ₹2,510 crore so far in August, while DIIs have purchased ₹34,370 crore — a signal that domestic institutions continue to provide a strong floor beneath the market even as foreign flows turn intermittently negative.

Nifty Dips 0.5% as Crude and Geopolitics Weigh

Benchmark indices traded with a corrective bias for the second consecutive week, as crude oil prices holding above $92 per barrel and continued US-Iran tensions kept investor sentiment subdued. The Nifty50 opened the week on a weak note, touching an intra-week low of 24,026 by mid-week before recovering partially in the final two sessions to close at 24,252 — down 0.5% for the week.

This is the second straight week of range-bound, downward-biased trade for the benchmark, reflecting a market that is neither in freefall nor finding conviction to rally decisively.

Broader Markets Outperform; Small Caps Hit Fresh All-Time High

The broader market told a more encouraging story. The Nifty Midcap 100 index ended the week on a flat note, relatively outperforming the headline index. More strikingly, the Nifty Small Cap 100 index touched a fresh all-time high, closing the week higher by over 1% — a sign that domestic retail and institutional appetite for smaller companies remains resilient even as large-cap sentiment wavers.

What to Watch Next

Investors are expected to keep a close eye on crude oil price movements and geopolitical developments, particularly any escalation in the US-Iran conflict, which could further dent risk appetite and pressure FII inflows. A sustained rise in crude also poses an inflationary risk for India, potentially influencing the Reserve Bank of India (RBI)'s policy calculus in the months ahead.