Retail Liquidity Program

Retail Liquidity Programs emerged as US exchanges sought to compete with off-exchange wholesalers and payment-for-order-flow arrangements for retail order flow. Wholesale market makers — firms like Citadel Securities and Virtu Financial — had long internalized retail orders off-exchange, offering price improvement in return. NYSE and NASDAQ developed RLPs as an on-exchange alternative to attract that same flow.

Under a typical RLP, a broker certifies that an incoming order originates from a retail investor. The exchange then routes this tagged order to designated RLP participants — typically large market makers — who have committed to provide price improvement. RLP quotes must be priced at least $0.001 per share better than the NBBO, giving retail investors a better fill than they would receive at the displayed national best price.

The economic logic differs from wholesale internalization. On an exchange, the transaction is publicly reported and the price improvement is at least partially observable. Off-exchange internalization is not subject to the same reporting requirements, making it harder to evaluate the quality of price improvement received. Proponents of RLPs argue they bring retail order flow back to lit venues, improving public price discovery and potentially creating feedback that further tightens spreads.

Critics of payment-for-order-flow arrangements have pointed to RLPs as evidence that exchanges themselves can provide price improvement to retail investors without requiring brokers to route orders to wholesalers. The SEC's 2022 and 2023 market structure proposals included measures to create a more competitive environment for retail order execution, partly inspired by RLP mechanics.

For retail investors, RLPs are largely invisible infrastructure. The benefit — fractional-cent price improvement per share — accumulates meaningfully over time for active traders but is rarely noticed on any individual transaction.