Yes, investment is an implicit cost because it is a firm investing their own money in something that (by definition of an opportunity cost) could have been invested in something else. Investment is the opportunity cost of a firm using their own money, and whether or not the opportunity that the firm invested in is worthwhile is defined by the NROR (the normal rate of return).
The amount an invetment firm takes varies depending on your investment and any deals you were able to make at the beginning. Sit with an investment firm and see what they will charge you if your investment makes a profit.
No a firm that owns its own capital equipment will not have the exact long run cost function as a firm that rents capital even if they both have the same production function.
JP Morgan is a investment firm or a investment bank and has been around for a long time. They are one of the largest investment banks in the world and have a huge client base.
since it is a long run investment, the ability of the firm to involve in effective planning affect the wealth of the shareholders
While you certainly can take care of your own investment management, sometimes it makes sense to hire a professional. There are so many decisions involved in managing a portfolio. It should probably be left to the educated professionals.
a Capital Traders Group or Proprietary Trading Firm allows you to register as a class B member in the investment firm.
The underwriting of a stock issues helps the investment firm to confirm that the project they are putting their money into will not be under-funded and will be carefully planned. The company that needs the underwriting from an investment firm may need to pay considerable fee for this service.
A company that invests on your behalf is called a brokerage firm or investment firm.
Stifel
Colony Capital is an investment firm based in Santa Monica, California. It is a private investment firm with a focus on real estate investments internationally.
goldman sachs