💫 Practical option plays · OI-based
Option buying using Open Interest
Rising OI + rising price = long unwinding not happening → buy calls. Rising OI + falling price = fresh shorts building → buy puts. Uses OI change as directional filter for option purchases.
Setup
- Chart: 5-min or 15-min candles alongside intraday OI data (from broker/platform)
- Track change in OI vs change in price across the top 3 ATM strikes for calls and puts
- Interpretation matrix: price up + OI up = long buildup; price up + OI down = short covering; price down + OI up = short buildup; price down + OI down = long unwinding
Entry
Long call: intraday price rises AND call OI is rising at ATM strikes (long buildup) → buy ATM or slightly OTM call. Long put: mirror — price falling with put OI rising.
Exit
Exit when OI trend flips — price still moving your way but OI decreasing signals unwinding of positions. Also exit on the reverse OI+price setup.
Stop-loss
Fixed 30% of premium OR when OI unwinding pattern emerges against your position, whichever first.
When it works
- Trending intraday sessions with clean OI buildup patterns
- Nifty and Bank Nifty which have deep OI data
- Post-consolidation breakouts confirmed by both price and OI expansion
When it fails
- Choppy sessions where OI zigzags across ATM strikes
- Expiry days where OI unwinding is the dominant flow regardless of price
- Mid-cap stocks with thin option OI where changes are unreliable
General trading rules that apply
Regardless of the specific setup, these apply to every strategy on this site:
- Never risk more than 2% of your account on a single trade
- Place a hard stop-loss before entering — no exceptions
- Journal every trade: setup, reason, outcome, one lesson
- After two consecutive losses, stop for the session
- Backtest and paper-trade for a month before deploying real capital
Every strategy here is part of our in-house catalogue, written and calibrated for Indian markets. Past behavior does not guarantee future results. Charts run against 2-year Nifty data — actual results in your account will vary. Backtest, paper-trade, and size responsibly before risking real capital.