Introductory Context
"A masterclass on using horizontal Calendar Put spreads on Nifty and Bank Nifty to trade slow downward drifts while capturing near-month time decay."
Strategy Dossier & Metadata Taxonomy
Strategy: Calendar Put Spread (Horizontal Time Spread) | Market: NSE Options | Structure: Short Near-Month Put + Long Far-Month Put (Same Strike)
1. The Core Principle in Plain English
A Calendar Put Spread involves selling a near-term Put option (rapid theta decay) and buying a longer-dated Put option at the exact same strike price.
It generates peak profitability if the underlying index drifts down to the strike price near the near-term expiry date, allowing the short put to expire worthless while retaining substantial value in the far-term put.