MIAX Swaps Index Name for Options Trading Clarity
Published Date: 8/8/2025
Notice
Summary
Miami International Securities Exchange (MIAX) is updating the name of an index used for trading options from “Bloomberg US Large Cap Price Return Index” to “Bloomberg 500 Index.” This change affects traders and investors using MIAX and takes effect immediately, with no extra costs involved. It’s a simple name update to keep things current and clear!
Analyzed Economic Effects
1 provisions identified: 1 benefits, 0 costs, 0 mixed.
Bloomberg Index Name Updated on MIAX
MIAX updated the index name from "Bloomberg US Large Cap Price Return Index" to "Bloomberg 500 Index" in a filing made on July 21, 2025. The change is name-only: MIAX says there will be no change to initial or maintenance listing criteria, expiration months, settlement or exercise style, or to how index values are disseminated (index values began being published on OPRA and MIAX feeds on April 16, 2025). MIAX also states there are no extra costs and it has not yet listed options on this index.
Your PRIA Score
Personalized for You
How does this regulation affect your finances?
Sign up for a PRIA Policy Scan to see your personalized alignment score for this federal register document and every other regulation we track. We analyze your financial profile against policy provisions to show you exactly what matters to your wallet.
Key Dates
Department and Agencies
Related Federal Register Documents
2026-10373 — Registered Offering Reform
The SEC wants to make it easier and cheaper for more companies to sell their stocks and bonds to the public. They’re opening up special forms and benefits to more businesses, updating rules to be more modern, and cutting red tape by overriding some state rules. If you’re a company planning to raise money, these changes could speed things up and save you money, with feedback due by July 27, 2026.
2026-10222 — Enhancement of Emerging Growth Company Accommodations and Simplification of Filer Status for Reporting Companies
The SEC is making it easier for companies that report their finances by simplifying their categories into just two groups: big and small filers. Smaller companies, including emerging growth ones, will get more time to file reports and enjoy simpler rules, while big companies keep stricter standards. These changes aim to save time and money, with feedback open until July 20, 2026.
2026-07651 — Concept Release on Consolidated Audit Trail and Other Audit Trails and Data Sources
The SEC wants your thoughts on how it tracks stock market trades using the Consolidated Audit Trail and other data tools. They’re thinking about updating rules to keep up with new tech, privacy, and security needs, and to make sure the system is fair and cost-effective. If you’re involved in the stock market or data tracking, speak up by June 22, 2026!
2026-11810 — Self-Regulatory Organizations; Cboe EDGX Exchange, Inc.; Notice of Filing and Immediate Effectiveness of a Proposed Rule Change To Adopt Fees for Its New Clock Service
Cboe EDGX Exchange just rolled out a new Clock Service that helps users sync their time systems perfectly with the Exchange. Starting May 18, 2026, they’re charging fees for this service but also offering a free trial to get everyone on board. This affects both members and non-members who want precise timing for their trading activities.
2026-11812 — Self-Regulatory Organizations; Cboe EDGA Exchange, Inc.; Notice of Filing and Immediate Effectiveness of a Proposed Rule Change To Adopt Fees for Its New Clock Service
Cboe EDGA Exchange just rolled out a new Clock Service to help traders sync their time systems perfectly. Starting May 18, 2026, users can try it for free, but after that, there will be fees for using this handy tool. This change affects anyone who wants precise timing for trading and keeps things running smoothly.
2026-11809 — Self-Regulatory Organizations; Cboe BZX Exchange, Inc.; Notice of Filing and Immediate Effectiveness of a Proposed Rule Change To Adopt Fees for Its New Clock Service
Cboe BZX Exchange just rolled out a new Clock Service that helps users sync their time systems with the Exchange’s for better accuracy. Starting May 18, 2026, they’re charging fees for this service but offering a free trial to get everyone started. This affects both members and non-members who want precise timing for their trading activities.
Previous / Next Documents
Previous: 2025-15068 — Self-Regulatory Organizations; NYSE Arca, Inc.; Notice of Designation of a Longer Period for Commission Action on a Proposed Rule Change To List and Trade Shares of the Sprott Physical Copper Trust
The SEC is taking extra time to review NYSE Arca’s plan to list and trade shares of the Sprott Physical Copper Trust, a new way for investors to buy copper through the stock market. This means folks interested in trading copper shares will have to wait until September 24, 2025, for a final decision. No money changes hands yet, but this move could open fresh investment opportunities soon!
Next: 2025-15070 — Self-Regulatory Organizations; Miami International Securities Exchange, LLC; Notice of Filing and Immediate Effectiveness of a Proposed Rule Change To Make a Number of Minor, Non-Substantive Edits to the Exchange's Rulebook
Miami International Securities Exchange (MIAX) is making some small, simple fixes to its rulebook to keep things clear and tidy. These changes don’t affect how trades work or cost anyone money—they just clean up the language and remove an outdated order type. The updates took effect right away on July 28, 2025, so everyone using the exchange can keep trading smoothly without missing a beat.