Stock / Commodity Derivative Exchange:

India has several exchanges where derivatives—both stock and commodity—are traded. Here's an overview of the key exchanges for stock and commodity derivatives: 

1. National Stock Exchange (NSE)

2. Bombay Stock Exchange (BSE)

3. Multi Commodity Exchange (MCX)

4. National Commodity and Derivatives Exchange (NCDEX)

5. Metropolitan Stock Exchange of India (MSE)

6. India International Exchange (India INX)

These exchanges are regulated by SEBI (Securities and Exchange Board of India), ensuring that derivative trading is well-supervised and follows regulatory guidelines.

Each exchange focuses on different markets, offering a range of derivative instruments suited for investors, traders, and hedgers alike.

Depositories:

In India, there are two primary depositories that provide the infrastructure for holding and transacting in securities electronically: 

1. National Securities Depository Limited (NSDL)

2. Central Depository Services Limited (CDSL)

Key Services Provided by Depositories:

Depository Participants (DPs):

Depository services are provided through Depository Participants (DPs), which act as intermediaries between the investor and the depository (NSDL or CDSL). Banks, stockbrokers, and financial institutions typically serve as DPs, and investors need to open Demat accounts with these DPs to hold securities in electronic form.

These depositories have played a significant role in streamlining the Indian capital market by digitizing securities, reducing the risks of holding physical certificates, and ensuring faster and more efficient trading and settlement.