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.
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.
A brokerage firm is a financial institution that is essentially the middle man between buyers and sellers. More information about brokerage firms can be found online from Wikipedia and other resources.
"Fidelity is the best online broker because they offer a full range of services to online investors, from international trading to checking accounts. The firm is also known for its large selection of investment products."
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
Arclight Capital Partners is an energy-focused firm, the investment overview on their website says that they have invested mostly in power generation and utilities.
Not sure, but it includes a computer by an accounting firm if investment as defined by economists.