Scalper Pro
The app's flagship intraday engine. It reads today's live tape for any NSE/BSE index and turns it into a single, decisive scalp plan — a VWAP + opening-range trigger, live momentum & OI flow, and the most tradable near-ATM options with a fast target, a tight stop and the exact index move needed.
Trader Tools
A strategy payoff builder, live stock & F&O journals, and a Zero Hero scanner — all in your browser. Looking for intraday trade ideas? They live in Scalper Pro.
These calculators are for planning and education only — not investment advice. Journal data is stored only in this browser.
What to check before placing a structure
The payoff diagram is the part everyone looks at and the least likely to surprise you. The numbers around it are where a strategy that looks good on the chart turns out not to be.
Read the net Greeks, then read the payoff
A payoff diagram shows what happens at expiry. Almost nothing is held to expiry, so most of what you will actually experience is the path — and the path is described by the net Greeks, not by the diagram.
Stated as Greeks, a position usually turns out to be a bet on something other than what it felt like. An iron condor is not "a range trade"; it is short vega and positive theta with near-flat delta — a bet that nothing much happens, funded by time. Written that way it is obvious what kills it, which is not obvious from the shape.
Probability of profit is not the odds
The probability figure comes from the option pricing model and the implied volatility currently in the market. It is a restatement of what the market is charging, not an independent estimate — a high probability of profit generally means a small maximum gain against a large maximum loss, because that is what the market is pricing it to be.
Selling far out-of-the-money options produces very high probabilities of profit and a loss distribution with a long tail on the wrong side. The probability number is accurate and it is not the whole picture; look at it next to the maximum loss, always.
Capital, charges and the fills you will actually get
Margin for a multi-leg position is not the sum of its legs — recognised hedged structures attract materially lower requirements, which is often what makes them viable at all. The capital figure here is what it actually takes to hold the position.
Charges matter more than they look on a four-leg structure: brokerage, STT, exchange fees, stamp duty and GST are paid per leg, twice, and on a small position the round trip can consume a meaningful share of the maximum gain. The execution page covers the other cost — slippage on entering and exiting four legs in strikes that may not be liquid, which is the one no calculator shows you.
The trade ideas
The ranked ideas are structures generated from the current chain by fixed rules — the strikes that fit a given payoff shape at today's prices. They are a starting point for a structure, not a view on the market, and nothing about them is backtested. Nothing on this page is investment advice; see the disclaimer.