How to Read FII/DII Data Without Getting Misled

Raw Numbers Are Noise Without Context

"FIIs sold ₹5,500 Cr today." Is that a lot? Compared to the 20-day average of ₹6,100 Cr, it is moderate. But if yesterday was ₹2,000 Cr, today is a sharp escalation. And if DIIs bought ₹5,200 Cr, the net outflow is only ₹300 Cr — essentially flat. The raw FII number, by itself, tells you nothing. You need streak length, intensity trend, DII absorption rate, and ideally the macro trigger driving the flow. Here is how to read FII/DII data properly.

The Five Contexts You Need

1. Streak length: More than 10 consecutive days of FII selling is a significant signal. Historically, such streaks break within 3-5 more sessions in 74% of cases.
2. Intensity: Daily FII selling above ₹5,000 Cr is elevated. Below ₹1,500 Cr is routine rebalancing and can be ignored.
3. DII Absorption Rate: If DIIs absorb more than 80% of FII selling, the net impact is minimal. Below 50% and the market is vulnerable to a sharper correction.
4. Macro Trigger: Is the selling driven by US yields (external, typically temporary) or domestic fundamentals (structural, potentially lasting)? The trigger determines duration.
5. Historical Pattern: Similar FII streaks in similar regimes have played out in specific ways. The replay engine provides this context automatically.