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What the SEC amends to regulation NMS mean

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The amendments to Reg NMS include updates to minimum tick sizes, access fee caps, and odd lot/round lot details.   

The SEC has amended certain rules under Regulation National Market System (Reg NMS), the 2005 ruleset that modernized US stock markets and sought to ensure fairness and competition.

Let’s take a look.

Minimum tick size halved for certain stocks under Rule 612

A second minimum pricing increment has been introduced for the