[Feature] Add Endpoint to calculate Capital Asset Pricing Model (CAPM)

[Codeansh]

Are you adding a new feature?

• [x] YES
• [ ] NO

Are you enhancing the old feature?

• [ ] YES
• [x] NO

Is your feature request related to a problem?

• [ ] YES
• [x] NO

Describe your feature/enhancement.

The Capital Asset Pricing Model (CAPM) is a widely used financial model that helps estimate the expected return on an investment based on its risk and the risk-free rate of return. The formula for calculating the expected return (ER) of an asset using the CAPM is as follows:

ER = Rf + β * (Rm - Rf)

where:

ER represents the expected return on the asset,
Rf is the risk-free rate of return (typically a government bond yield),
β (beta) measures the asset's sensitivity to systematic risk,
Rm is the expected return of the market (usually represented by a broad market index, such as the S&P 500),
Rm - Rf is the equity risk premium, representing the excess return of the market over the risk-free rate.

Can you add the feature by yourself?

• [x] YES
• [ ] NO

Additional Information

Please assign this issue to me.

[github-actions[bot]]

👋 @Codeansh

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[github-actions[bot]]

Hello @Codeansh, thank you for raising an issue. 🙌 I have assigned the issue to you. You can now start working on it. If you encounter any problems, please feel free to connect with us. 👍

[ighoshsubho]

Hello @Codeansh, this is Version 2 of Fintech API repository, there had been few major updates, please go through the CONTRIBUTING.md to make further contributions. Thanks.

[Codeansh]

#399 , please review my pull request.