Trusted by institutional traders since 1998

The options pricing engine behind the world's trading desks

The options pricing and volatility engine trusted by institutional desks since 1998. Deploy with a single line of code.

Volatility Surface — AAPL 2026-06 Expiry
Live
IV% Strike 40 30 20 10 160 175 190 205 220 ATM 30d 60d 90d
Impl. Vol
24.73%
Delta
0.4521
Gamma
0.0312
Vega
0.1847
// Price an American call with full Greeks
double price = options.callPrice(189.84, 190, 0.05, 0.33, 35);
double delta = options.callDelta(189.84, 190, 0.05, 0.33, 35);
double iv = options.impliedVolatility(189.84, 190, 8.42, 0.05, 35);
Theo Price
$8.42
Model
Black-Scholes

Real-time analytics, institutional precision

Production-grade pricing libraries for ActiveX, .NET, and Java — delivering Greeks, implied volatility, probability analysis, and multi-leg strategy modelling. Build proprietary pricing systems that give your desk an independent view of the market.

Six products. One ecosystem.

Purpose-built components for options pricing, volatility estimation, and portfolio-level analytics across any asset class and platform.

Options

Options/X

A high-performance ActiveX/COM software library for building custom options pricing systems, calculators, and scanning applications. Price stock options, commodities, and currencies with a single line of code.

European & American OptionsGreeks CalculationExcel Add-In
Learn more
Options

Options/J

Enterprise-grade Java options pricing and analysis library. Exceptionally fast derivative pricing that integrates into your application stack in minutes, not days. Cross-platform and JVM-optimised.

Cross-PlatformDerivative PricingStocks, Commodities, FX
Learn more
Options

Options/NET

Comprehensive .NET analysis suite for multi-leg strategies including Iron Condors, Butterflies, Calendar Spreads, Straddles, Strangles, and Ratio Writes. Full profit-loss charting and scenario analysis.

Multi-Leg StrategiesP&L ChartingVolatility Skew
Learn more
Volatility

Volatility/X

Dedicated ActiveX/COM volatility estimation library providing the most accurate methods for computing implied and historical volatility. Integrates directly into Excel, Visual Basic, and any COM-compatible environment.

Implied VolatilityHistorical VolatilityExcel Add-In
Learn more
Volatility

Volatility/NET

A comprehensive .NET volatility toolkit delivering the best available methods for computing implied and statistical volatility. Designed for seamless integration into institutional risk and pricing infrastructure.

Statistical VolatilityImplied Volatility.NET Integration
Learn more
Volatility

Volatility/J

Cross-platform Java volatility estimation library delivering implied and statistical volatility methods for any JVM application. The volatility companion to Options/J.

Cross-PlatformJVM Optimised14 Methods

25+

Years in production

9

Pricing models

14

Volatility methods

C++

Native performance

3

Platform targets

1

Line of code

Same models, same precision, any platform

Every pricing call is a single line of code — in the language your desk already uses.

VBA / EXCELOptions/X
' Price an American call
Dim opt As New OptionsX.Pricer
opt.Model = "BjerksundStensland"
price = opt.CallPrice(189.84, 190, 0.05, 0.33, 35)
JAVAOptions/J
// Price an American call
OptionsJ opt = new OptionsJ();
opt.setModel("BjerksundStensland");
double price = opt.callPrice(189.84, 190, 0.05, 0.33, 35);
C#Options/NET
// Price an American call
var opt = new OptionsNET();
opt.Model = "BjerksundStensland";
double price = opt.CallPrice(189.84, 190, 0.05, 0.33, 35);

Trusted by trading professionals worldwide

"
Your options software has been performing exceptionally well across our desk.
SV
S.V.
Quantitative Analyst — USA
"
After evaluating several alternatives, Options/X is the clear choice. The level of support and dedication to improving the product has been very impressive.
M
M.
CTO — USA
"
We've been developing with Options/X for several months now and have been very satisfied with everything so far.
C
C.
Head of Derivatives — Netherlands

Transparent pricing

Annual licences per product, hardware-locked. All tiers include updates for the licence term.

Professional

$35,000 / year

Single-seat desktop licence. One named developer, one workstation.

  • Any one Windale product
  • Single machine, hardware-locked licence
  • Desktop / workstation use only
  • Source code samples & documentation
  • Priority email support
  • All updates included during licence term
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Enterprise / Server

Contact Sales

Server, cloud, and multi-user production deployment.

  • Complete product suite
  • Server & production environment deployment
  • Unlimited seats, containers & cloud instances
  • Direct founder-level technical support
  • Custom model development available
  • Non-production & staging environments included
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Evaluate any Windale product in your own environment. Test against your own data, validate against published reference values, and go live when you're ready.

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Let's discuss how Windale fits your trading infrastructure

Whether you're evaluating a single component or planning an enterprise-wide deployment, our team is ready to help you get started.

Email
sales@windale.com
Website
windale.com
Response Time
Within 24 hours