What are the instruments of f?

It seems like your question might be incomplete. If you're asking about the instruments of finance, they typically include stocks, bonds, derivatives, and mutual funds. Each of these instruments serves different purposes in investment and risk management. Stocks represent ownership in a company, bonds are debt instruments issued by entities, derivatives are contracts whose value is derived from underlying assets, and mutual funds pool money from multiple investors to invest in a diversified portfolio. If you meant a different context, please provide more details!