Stock Market Trading Portal Development

I need a comprehensive stock market trading portal that includes essential functionalities such as real-time stock quotes, trade execution, portfolio management, record keeping, and data analytics. Additionally, the portal should feature a news feed to keep users informed of market trends and updates. The system must support multiple user roles, including individual traders, institutional traders, and brokers.

Key Requirements:
- Real-time stock quotes
- Trade execution capabilities
- Portfolio management tools
- Record keeping and data analytics
- Integrated news feed
- Support for individual traders, institutional traders, and brokers

Ideal Skills and Experience:
- Experience in developing stock market trading platforms
- Proficiency in real-time data processing
- Strong understanding of financial markets and trading systems
- Ability to implement multi-user role functionalities
- Expertise in data analytics and record management systems