# BRKB - BERKSHIRE HATHAWAY CL B Options Profit Calculator, Price & Chart

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

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 **532.23**. 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 | 532.23 |
| Solve For | Price Change |
| Valuation date | Oct 19, 2026 |
| Model | European |
| Rate % | 3.88 |
| Volatility | Leg IV (each leg's implied volatility) |
| Hist Vol | 0.1322 |
| Indexed IV | 0.1414 |
| Div Amt | - |
| Ex-Date | - |
| Frequency | Quarterly |

## Position

| Expiry | Strike | P/C | Quan | Side | Cost | TPrice | Vol | Delta | Gamma | Theta | Vega | Rho |
|---|---:|---|---:|---|---:|---:|---:|---:|---:|---:|---:|---:|
| 2026-10-23 | 530.00 | Call | 1 | Long | 4.1250 | 4.2643 | 0.1295 | 0.6361 | 0.0521 | -0.3741 | 0.2092 | 0.0366 |

**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 |
|---:|---:|---:|---:|---:|---:|---:|---:|
| 412.50 | 426.43 | 13.93 | 63.61 | 5.21 | -37.41 | 20.92 | 3.66 |

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 (where the P/L line crosses zero): **531.70**.

P/L by stock price from 266.12 to 792.86 (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 **-412.50** (at 266.12) to **25,873.31** (at 792.86).

| Stock price | P/L on Oct 19, 2026 | P/L at expiration |
|---:|---:|---:|
| 266.12 | -412.50 | -412.50 |
| 288.06 | -412.50 | -412.50 |
| 310.01 | -412.50 | -412.50 |
| 331.96 | -412.50 | -412.50 |
| 353.91 | -412.50 | -412.50 |
| 375.85 | -412.50 | -412.50 |
| 397.80 | -412.50 | -412.50 |
| 419.75 | -412.50 | -412.50 |
| 441.70 | -412.50 | -412.50 |
| 463.64 | -412.50 | -412.50 |
| 485.59 | -412.50 | -412.50 |
| 507.54 | -412.35 | -412.50 |
| 529.49 | -140.24 | -412.50 |
| 551.43 | 1,753.78 | 1,730.92 |
| 573.38 | 3,948.21 | 3,925.68 |
| 595.33 | 6,142.97 | 6,120.44 |
| 617.28 | 8,337.74 | 8,315.21 |
| 639.22 | 10,532.50 | 10,509.97 |
| 661.17 | 12,727.26 | 12,704.73 |
| 683.12 | 14,922.03 | 14,899.49 |
| 705.07 | 17,116.79 | 17,094.26 |
| 727.02 | 19,311.55 | 19,289.02 |
| 748.96 | 21,506.31 | 21,483.78 |
| 770.91 | 23,701.08 | 23,678.55 |
| 792.86 | 25,895.84 | 25,873.31 |

## 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/BRKB.md?legs[0][expiry]=2026-10-23&legs[0][strike]=530&legs[0][putcall]=C&legs[0][side]=long&legs[0][quantity]=1&legs[0][cost]=4.125`. A preset: `/calculators/stock-option-calculator/BRKB.md?preset=straddle`. With curl, pass `-g` (or encode the brackets as %5B and %5D).

## More for BRKB

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

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