Trading Securities - Registered Traders
A registered trader is an exchange member who trades for their own account and for their own profit and loss. Orders may not originate on the floor of the NYSE; however, registered traders are active on other exchanges such as the Amex.
The hybrid trading model at the NYSE allows for off floor market makers to qualify as supplemental liquidity providers(SLPs). SLPs must submit bids and offers that are equal to the best bid and offer at least 10 % of the time for at least 100 shares.
NYSE Rule 61 requires that all bids and offers be for round lots or multiples of round lots. Members in the trading crowd are required to report their bids, offers, and transactions to the reporter.
Super Display Book / SDBK