Hi there,
Whether or not you can trade securities without using the services provided by stock exchanges depends primarily on the kind of securities you plan to trade.
Securities which can be traded outside of a stock exchange are known as over the counter (OTC) securities. These may include stocks in certain companies, but are tyically other types of securities including derivatives, futures or options.
Some companies sell shares directly to investors via a direct stock purchase plan or through a transfer agent. In some cases, shares transacted directly between two parties (a seller and buyer) can be registered in the new owner's name directly on the company's share register.
However, trading in many major stocks requires the services of a broker and a stock exchange. Stock exchanges also provide more security because they guarantee that both parties fulfil their end of the bargain.
Best regards from Moneyguru
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