# NDX - NASDAQ 100 Options Profit Calculator, Price & Chart

> Graphical, multi-leg complex stock option profit and loss calculator for NDX.

Data as of Oct 19, 2026 (end of day). **Data is delayed**: the latest session is Nov 9, 2026. [Subscribe](https://www.optionistics.com/subscribe) to get the latest end-of-day data.

Stock at **29,529.34**. Build a position of up to 8 option legs plus stock; the chart shows P/L today and at expiration.

## Settings

| Field | Value |
|---|---|
| Stock price | 29,529.34 |
| Solve For | Price Change |
| Valuation date | Oct 19, 2026 |
| Model | European |
| Rate % | 3.88 |
| Volatility | Leg IV (each leg's implied volatility) |
| Hist Vol | 0.1953 |
| Indexed IV | 0.2293 |
| Div Amt | - |
| Ex-Date | - |
| Frequency | Quarterly |

## Position

| Expiry | Strike | P/C | Quan | Side | Cost | TPrice | Vol | Delta | Gamma | Theta | Vega | Rho |
|---|---:|---|---:|---|---:|---:|---:|---:|---:|---:|---:|---:|
| 2026-10-20 | 29,530.00 | Call | 1 | Long | 0.0000 | 121.6841 | 0.1953 | 0.5053 | 0.0013 | -61.7901 | 6.1656 | 0.4055 |

**Cost** is the entry price per share, **TPrice** the theoretical value on the valuation date, **Vol** the volatility it is priced with; Greeks are per share (short legs negative). Quantities are contracts of 100 shares, or shares for the stock leg.

### Position totals ($)

| Cost | Value | P/L | Delta | Gamma | Theta | Vega | Rho |
|---:|---:|---:|---:|---:|---:|---:|---:|
| 0.00 | 12,168.41 | 12,168.41 | 50.53 | 0.13 | -6,179.01 | 616.56 | 40.55 |

Cost is the net debit paid (negative: a net credit), Value the position's theoretical value on the valuation date, P/L the difference; Greeks are position totals in shares.

## Profit and loss

Breakevens: none; the P/L line does not cross zero on the chart.

P/L by stock price from 14,764.67 to 43,989.59 (the chart spans 50% either side of the stock price; narrow it with `factor`, e.g. `factor=0.1` for 10%), every 4th of its 97 points.

At expiration, over the charted range, P/L runs from **0.00** (at 14,764.67) to **1,445,958.95** (at 43,989.59).

| Stock price | P/L on Oct 19, 2026 | P/L at expiration |
|---:|---:|---:|
| 14,764.67 | 0.00 | 0.00 |
| 15,982.38 | 0.00 | 0.00 |
| 17,200.08 | 0.00 | 0.00 |
| 18,417.79 | 0.00 | 0.00 |
| 19,635.49 | 0.00 | 0.00 |
| 20,853.20 | 0.00 | 0.00 |
| 22,070.90 | 0.00 | 0.00 |
| 23,288.61 | 0.00 | 0.00 |
| 24,506.31 | 0.00 | 0.00 |
| 25,724.02 | 0.00 | 0.00 |
| 26,941.72 | 0.00 | 0.00 |
| 28,159.43 | 0.01 | 0.00 |
| 29,377.13 | 5,979.93 | 0.00 |
| 30,594.84 | 106,799.43 | 106,483.56 |
| 31,812.54 | 228,567.94 | 228,254.05 |
| 33,030.25 | 350,338.43 | 350,024.54 |
| 34,247.95 | 472,108.92 | 471,795.03 |
| 35,465.66 | 593,879.41 | 593,565.52 |
| 36,683.36 | 715,649.90 | 715,336.01 |
| 37,901.06 | 837,420.39 | 837,106.50 |
| 39,118.77 | 959,190.88 | 958,876.99 |
| 40,336.47 | 1,080,961.37 | 1,080,647.48 |
| 41,554.18 | 1,202,731.86 | 1,202,417.97 |
| 42,771.88 | 1,324,502.35 | 1,324,188.46 |
| 43,989.59 | 1,446,272.84 | 1,445,958.95 |

## How to use

Enter the position with query parameters. Option legs are `legs[N][field]`, N counting from 0, up to 4 legs ([subscribe](https://www.optionistics.com/subscribe) for 8): `expiry` (YYYY-MM-DD, required), `strike` (required), `putcall` (C or P), `side` (long or short), `quantity` (contracts, 1-1000), `cost` (entry price per share; default the contract's theoretical price), `ivol` (volatility override, decimal), `hidden` (1 leaves the leg out of the totals and chart). A stock leg: `stock[side]`, `stock[quantity]` (shares), `stock[cost]`. Or start from a `preset`: bull-call, bear-call, bull-put, bear-put, straddle, strangle, covered-call, covered-put, calendar-call, calendar-put, diagonal-call, diagonal-put, single-call, single-put. Pricing: `rate` (percent), `model` (a American, e European; default American when a dividend is set), `voltype` (0 slider, 1 indexed IV, 2 historical IV, 3 each leg's IV), `ivSlider` (1-400, with voltype 0), `dividend` (next dividend, dollars), `exDate` (YYYY-MM-DD), `frequency` (0 none, 12, 4, 2 or 1 a year). Chart: `solveFor` (p price change, dl days left), `factor` (price range either side of the stock price, 0.01-1, default 0.5), `dateOffset` (price change: value on the report date plus dateOffset + 1 days; default -1, the report date), `sliderPrice` (days left: the stock price to value at).

This position: `/calculators/stock-option-calculator/NDX.md?legs[0][expiry]=2026-10-20&legs[0][strike]=29530&legs[0][putcall]=C&legs[0][side]=long&legs[0][quantity]=1`. A preset: `/calculators/stock-option-calculator/NDX.md?preset=straddle`. With curl, pass `-g` (or encode the brackets as %5B and %5D).

## More for NDX

- [Quote](https://www.optionistics.com/quotes/stock-quotes/NDX.md)
- [Option chain](https://www.optionistics.com/quotes/stock-option-chains/NDX.md)
- [Price history](https://www.optionistics.com/quotes/stock-prices/NDX.md)
- [10 day snapshot](https://www.optionistics.com/snapshot.md?symbol=NDX)
- [Strike Pegger (max pain)](https://www.optionistics.com/quotes/strike-pegger/NDX.md)
- [Volatility skew](https://www.optionistics.com/screener/volatility-skew/NDX.md)
- [Put/call ratio](https://www.optionistics.com/screener/put-call-ratio/NDX.md)
- [Trade finder](https://www.optionistics.com/screener/stock-trade-finder/NDX.md)
- [Probability calculator](https://www.optionistics.com/calculators/probability-calculator.md?symbol=NDX)

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