The Nasdaq Stock Market LLC is proposing to change the credits they offer for certain stock transactions. Currently, there's a credit of $0.0030 per share for members providing substantial liquidity, but Nasdaq wants to add a new, slightly lower credit of $0.00295 per share for members meeting less strict volume requirements. This is meant to encourage more trading activity and improve the quality of the market by providing incentives for adding liquidity, especially in securities not listed on Nasdaq or NYSE. The changes are designed to be competitive and fair, with the understanding that participants dissatisfied with the credits can choose to trade elsewhere.
Simple Explanation
Nasdaq wants to give a little bit of money back to people trading lots of stocks, with different amounts depending on how many stocks they trade. They're hoping this will make more people want to trade on their exchange, but some people might think it's unfair or confusing.