FII Returns to Net Buying After Single-Day Outflow; DII Buying Streak Hits 19 Sessions
MarketPulse Summary: FII net buying resumed at ₹599.54 Cr after selling ₹3,208.76 Cr in the previous session, while DIIs extended their 19-session buying streak with ₹1,019.69 Cr. The Nifty 50 gained 0.33% to close at ₹23,346.4, with both institutions net buyers for the day.
📊 Nifty 50 Snapshot
🏦 FII and DII Activity
On 18 Sept 2026 , FII/FPI were net buyers of +₹599.54 Cr , while DII were net buyers of +₹1,019.69 Cr . Combined institutional activity stood at +₹1,619.23 Cr .
🔍 What the Institutional Flows Show
Today's FII net buying marks a reversal from yesterday's outflow, though the ₹599.54 Cr figure is modest compared to the strongest FII buying of ₹6,688.37 Cr on 2 Sept 2026. Over the latest five complete sessions, FII net selling totals ₹6,956.22 Cr (average ₹-1,391.24 Cr daily), while DII net buying totals ₹10,317.51 Cr (average ₹2,063.5 Cr daily), showing persistent divergence between the two institutional segments. The 10-session window is complete, though 20-session and 30-session trends cannot be assessed as those windows remain incomplete.
📅 FII/DII Flow — Last 5 Sessions
| Date | FII/FPI Net (₹ Cr) | DII Net (₹ Cr) | Combined Net (₹ Cr) |
|---|---|---|---|
| 10 Sept 2026 | -438.24 | +1,025.85 | +587.61 |
| 11 Sept 2026 | -930.90 | +1,968.17 | +1,037.27 |
| 15 Sept 2026 | -2,977.86 | +2,686.05 | -291.81 |
| 17 Sept 2026 | -3,208.76 | +3,617.75 | +408.99 |
| 18 Sept 2026 | +599.54 | +1,019.69 | +1,619.23 |
📊 Five-Session Institutional Flow
| FII/FPI | ₹-6,956.22 Cr |
| DII | +₹10,317.51 Cr |
| Combined | +₹3,361.29 Cr |
| Avg Daily FII/FPI | ₹-1,391.24 Cr |
| Avg Daily DII | +₹2,063.50 Cr |
| Avg Daily Combined | +₹672.26 Cr |
⚡ What to Watch Next
Investors should watch whether FII buying sustains beyond this single session given the five-session net selling trend. The DII 19-session buying streak and whether FIIs follow today's modest buying with larger inflows are the key near-term data points to monitor.
📝 Data Note
FII/FPI and DII figures are based on NSE institutional trading data. The latest institutional-flow figures are provisional and may be revised.
The five-session analysis covers the available trading sessions in the dataset. Longer-term 10-, 20- and 30-session windows are not treated as complete until sufficient sessions are available.
Disclaimer: This article is for informational and educational purposes only. It is not investment advice or a recommendation to buy or sell any security. Investors should conduct their own research or consult a qualified financial professional.