SEC Proposes Rules That Would Squeeze Stock-Market Middlemen
Regulators are set to propose the biggest changes to U.S. stock-market rules since the mid-2000s, aiming to give small investors better prices on their trades.
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction: SEC Proposes Rules That Would Squeeze Stock-Market Middlemen

### Response: Regulators are set to propose the biggest changes to U.S. stock-market rules since the mid-2000s, aiming to give small investors better prices on their trades.