Strike Desk The Model The Audit
The Strike Desk

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The Strike Desk

Move the controls. Every probability below is computed live from the same model that was checked against 20,272 out-of-sample predictions — when it says 5%, it happened 5.2% of the time. Click any row to price that trade.

Calibration
0.5 pts
error, 20,272 checks
Backtested
474
expiries, 11.6 years
Tradebook
8,826
positions, reconciled to ₹0
Structural edge
+2.29
vol pts, 82% of days
Beats guesswork by
26%
Brier score
Put in this morning's real numbers and the table re-prices instantly.
DistanceCall strikeCall risk Put strikePut riskVerdict
“Risk” = the chance the index reaches that strike before expiry, from the empirical distribution of past moves, tail-corrected. Not a forecast of direction.

Where your strike sits on the risk curve

Chance the index reaches a level before expiry, by how far out that level is. The shaded band is everything closer than 2% — the near-money zone that historically kept only 0.7% of the premium sold.

call side (upside) put side (downside) your selected strike

Select a row above

Then enter the premium being offered to see whether it covers the risk.

Your capital

size every trade against something real

Every risk figure above is a rupee amount. It only means something next to the capital behind it. Work it out from your Kite account, or type it in if you already know it.

Kite → Funds → Equity → Available cash. Prefer Opening balance if you are checking mid-session — it excludes today's unsettled movement.
Kite → FundsTotal collateral. This is your pledged equity plus liquid funds, already after the exchange haircut.
Cash you hold ready to top up margin. Leave at zero if none.
Do not use “Available margin”. It includes premium received from the options you have sold, which is money you may have to give back — it is a liability, not capital. Using it will flatter every ratio on this page.
  1. Open console.zerodha.com and log in with your Kite details.
  2. Go to Funds, then Statement.
  3. Choose the Equity segment and your date range.
  4. The closing balance is your cash. Pledged collateral is shown separately under Portfolio → Holdings.

Why you can trust the numbers

CheckResult
Contract notes reconciled against the broker₹0.00 across 1,058 notes
Our real fills checked against NSE's price archive66,419
Fills inside that day's traded range100.00%
Model predictions checked out-of-sample20,272
Calibration error0.5 percentage points
Backtest on real settlement prices474 expiries, 11.6 years

This desk does not predict direction. We tested that on 2,062 out-of-sample days: 50.97% accurate against a 54.03% always-guess-up baseline — worse than guessing. It prices the size of the move, which is the part the data can actually answer, and the part an option seller is paid for.