Last Updated: October 1, 2026 Direct Question You already know that Change in OI going up means more contracts got opened — but does that tell you whether the person adding that position was making a directional bet, or a market maker just hedging? ✍️ Author’s Note — Kalpeshr Patil The first time I tried … Read more
Last Updated: September 27, 2026 Direct Question Two defence companies each announce a Rs 5,000 crore order the same week. Both stocks pop. So why does one company’s profit show up on schedule three years later, while the other quietly disappoints? The order-book number never told you the difference. ✍️ Author’s Note — Kalpeshr Patil … Read more
Direct Question You already know Nifty 500 is free-float market-cap weighted. But if that were the whole story, one runaway bank stock could quietly become half of Fin Nifty – and it never does. Something else is going on behind that formula. ✍️ Author’s Note — Kalpeshr Patil I once compared my index fund’s five-year … Read more
Surprising Fact India supplied defence equipment to around 80 countries last year – yet most retail investors couldn’t name five listed defence companies beyond HAL and BEL. ✍️ Author’s Note — Kalpeshr Patil The first time I looked at a defence company’s order book, I saw ₹10,000 crore against ₹2,000 crore in annual revenue and … Read more
Direct Question You’ve probably heard of Nifty 50 every time the market opens. But scroll through your broker app and you’ll spot Nifty 500, Smallcap 250 and Fin Nifty too – three names that sound similar but track completely different parts of the market. ✍️ Author’s Note — Kalpeshr Patil For my first few months … Read more
Direct Question You’ve seen Nifty futures OI fall sharply in expiry week and rise again days later on the next contract – but is that money leaving the market, or just changing addresses? ✍️ Author’s Note — Kalpeshr Patil I once watched a stock future’s OI crash by nearly half overnight and assumed a mass … Read more
Surprising Fact Two traders can execute a trade worth crores today, and the open interest on that contract might not move by even one unit. ✍️ Author’s Note — Kalpeshr Patil The first time I saw “OI” next to Nifty futures on my trading app, I assumed it was just another way of showing the … Read more
Surprising Fact Over 91% of individual F&O traders in India lost money in FY25, according to SEBI — and most of them were staring at an option chain when they placed the trade. ✍️ Author’s Note — Kalpeshr Patil The first time I opened the Nifty option chain, I compared OI across two different expiry … Read more