# Diagonal Put Spread Calculator: Options Profit & Loss Chart > Diagonal put spread calculator: chart the profit and loss of a put spread across two strikes and two expirations, with end-of-day option prices. Data as of Oct 20, 2026 (end of day). **Data is delayed**: the latest session is Nov 10, 2026. [Subscribe](https://www.optionistics.com/subscribe) to get the latest end-of-day data. Stock at **524.36**. 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 | 524.36 | | Solve For | Price Change | | Valuation date | Oct 20, 2026 | | Model | European | | Rate % | 3.88 | | Volatility | Leg IV (each leg's implied volatility) | | Hist Vol | 0.1235 | | Indexed IV | 0.1513 | | Div Amt | - | | Ex-Date | - | | Frequency | Quarterly | ## Position | Expiry | Strike | P/C | Quan | Side | Cost | TPrice | Vol | Delta | Gamma | Theta | Vega | Rho | |---|---:|---|---:|---|---:|---:|---:|---:|---:|---:|---:|---:| | 2026-10-23 | 523.00 | Put | 1 | Short | 2.0000 | 1.9313 | 0.1386 | 0.4058 | -0.0589 | 0.4029 | -0.1843 | 0.0176 | | 2026-10-30 | 524.00 | Put | 1 | Long | 4.4000 | 4.1390 | 0.1325 | -0.4638 | 0.0346 | -0.2021 | 0.3448 | -0.0678 | **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 | |---:|---:|---:|---:|---:|---:|---:|---:| | 240.00 | 220.77 | -19.23 | -5.80 | -2.43 | 20.08 | 16.05 | -5.02 | 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 262.18 to 781.13 (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 **-240.00** (at 527.06) to **-140.00** (at 262.18). | Stock price | P/L on Oct 20, 2026 | P/L at expiration | |---:|---:|---:| | 262.18 | -179.00 | -140.00 | | 283.80 | -179.00 | -140.00 | | 305.43 | -179.00 | -140.00 | | 327.05 | -179.00 | -140.00 | | 348.67 | -179.00 | -140.00 | | 370.30 | -179.00 | -140.00 | | 391.92 | -179.00 | -140.00 | | 413.54 | -179.00 | -140.00 | | 435.16 | -179.00 | -140.00 | | 456.79 | -179.00 | -140.00 | | 478.41 | -178.99 | -140.00 | | 500.03 | -171.49 | -140.00 | | 521.66 | -12.75 | -140.00 | | 543.28 | -218.62 | -240.00 | | 564.90 | -239.92 | -240.00 | | 586.53 | -240.00 | -240.00 | | 608.15 | -240.00 | -240.00 | | 629.77 | -240.00 | -240.00 | | 651.40 | -240.00 | -240.00 | | 673.02 | -240.00 | -240.00 | | 694.64 | -240.00 | -240.00 | | 716.26 | -240.00 | -240.00 | | 737.89 | -240.00 | -240.00 | | 759.51 | -240.00 | -240.00 | | 781.13 | -240.00 | -240.00 | ## About the Diagonal Put Spread The calculator opens with a diagonal put spread: the put at the next strike below the money sold in the nearest expiration and the at-the-money put bought in the next one. It works like a calendar spread with a bearish tilt: the short near-term put decays faster than the long one, and the position does best with the stock falling toward the short strike by the near expiration. The chart models what the long put is still worth then. To find candidates, use the [Diagonal Put Spreads Screener](https://www.optionistics.com/screener/diagonal-put-spreads.md). ### Other strategy calculators - [Long Call Calculator](https://www.optionistics.com/calculators/long-call-calculator.md) - [Long Put Calculator](https://www.optionistics.com/calculators/long-put-calculator.md) - [Bull Call Spread Calculator](https://www.optionistics.com/calculators/bull-call-spread-calculator.md) - [Bear Call Spread Calculator](https://www.optionistics.com/calculators/bear-call-spread-calculator.md) - [Bull Put Spread Calculator](https://www.optionistics.com/calculators/bull-put-spread-calculator.md) - [Bear Put Spread Calculator](https://www.optionistics.com/calculators/bear-put-spread-calculator.md) - [Straddle Calculator](https://www.optionistics.com/calculators/straddle-calculator.md) - [Strangle Calculator](https://www.optionistics.com/calculators/strangle-calculator.md) - [Covered Call Calculator](https://www.optionistics.com/calculators/covered-call-calculator.md) - [Covered Put Calculator](https://www.optionistics.com/calculators/covered-put-calculator.md) - [Calendar Call Spread Calculator](https://www.optionistics.com/calculators/calendar-call-spread-calculator.md) - [Calendar Put Spread Calculator](https://www.optionistics.com/calculators/calendar-put-spread-calculator.md) - [Diagonal Call Spread Calculator](https://www.optionistics.com/calculators/diagonal-call-spread-calculator.md) ## 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/DIA.md?legs[0][expiry]=2026-10-23&legs[0][strike]=523&legs[0][putcall]=P&legs[0][side]=short&legs[0][quantity]=1&legs[0][cost]=2&legs[1][expiry]=2026-10-30&legs[1][strike]=524&legs[1][putcall]=P&legs[1][side]=long&legs[1][quantity]=1&legs[1][cost]=4.4`. A preset: `/calculators/stock-option-calculator/DIA.md?preset=straddle`. With curl, pass `-g` (or encode the brackets as %5B and %5D). ## More for DIA - [Quote](https://www.optionistics.com/quotes/stock-quotes/DIA.md) - [Option chain](https://www.optionistics.com/quotes/stock-option-chains/DIA.md) - [Price history](https://www.optionistics.com/quotes/stock-prices/DIA.md) - [10 day snapshot](https://www.optionistics.com/snapshot.md?symbol=DIA) - [Strike Pegger (max pain)](https://www.optionistics.com/quotes/strike-pegger/DIA.md) - [Volatility skew](https://www.optionistics.com/screener/volatility-skew/DIA.md) - [Put/call ratio](https://www.optionistics.com/screener/put-call-ratio/DIA.md) - [Trade finder](https://www.optionistics.com/screener/stock-trade-finder/DIA.md) - [Probability calculator](https://www.optionistics.com/calculators/probability-calculator.md?symbol=DIA) --- From [Optionistics](https://www.optionistics.com), options analytics since 2005. Site map for AI agents: https://www.optionistics.com/llms.txt