U.S. Options

The following Defiance Daily Target ETF's have announced reverse stock splits effective for Thursday, March 19, 2026:

• Defiance Daily Target 2X Long HIMS ETF (HIMZ) changes to (HIMZ1)
• Defiance Daily Target 2X Long MSTR ETF (MSTX) changes to (MSTX1)
• Defiance Daily Target 2X Long RGTI ETF (RGTX) changes to (RGTX1)
• Defiance Daily Target 2X Long RIOT ETF (RIOX) changes to (RIOX1)
• Defiance Daily Target 2X Long SMCI ETF (SMCX) changes to (SMCX1)

HIMZ1 and MSTX1 will be available for trading on the MIAX Options Exchange, MIAX Pearl Options Exchange and MIAX Sapphire Options Exchange on Thursday, March 19, 2026. HIMZ1 and MSTX1 will not be available for trading on the MIAX Emerald Options Exchange.

The MIAX Options Exchange, MIAX Pearl Options Exchange, MIAX Emerald Options Exchange and MIAX Sapphire Options Exchange will not list RGTX1, RIOX1 and SMCX1 options.  

No options on the underlying HIMZ, MSTX, RGTX, RIOX and SMCX will be available for trading on Thursday, March 19, 2026.

All GTC orders resting on the MIAX order books in HIMZ, MSTX, RGTX, RIOX and SMCX will be canceled at the close of business on Wednesday, March 18, 2026.

HIMZ, MSTX, RGTX, RIOX and SMCX will resume trading on the MIAX Options Exchange, MIAX Pearl Options Exchange, MIAX Emerald Options Exchange and MIAX Sapphire Options Exchange on Friday, March 20, 2026.

Please Note:

• HIMZ1 options will trade on Cloud 8 on the MIAX Options Exchange, on Cloud 4 on the MIAX Pearl Options Exchange and on Cloud 3 on the MIAX Sapphire Options Exchange.
• MSTX1 options will trade on Cloud 12 on the MIAX Options Exchange, on Cloud 5 on the MIAX Pearl Options Exchange and on Cloud 4 on the MIAX Sapphire Options Exchange.

Market Makers can use the Member Firm Portal (MFP) to manage their option class assignments. 

• HIMZ should be used for class assignments in HIMZ1 via MFP
• MSTX should be used for class assignments in MSTX1 via MFP

All LMM and RMM Option Class Assignments must be entered prior to 6:00 PM ET on the business day immediately preceding the effective date.  All changes made after 6:00 PM ET on a given day will be effective two trading days later.

MIAX Options and MIAX Emerald Primary Lead Market Maker (PLMM) assignments and un-assignments will not be supported via the MFP. 
 
Additional details about the above Defiance Daily Target ETF reverse splits are provided in the attached OCC Memos.

Please contact MIAX Listings with any questions at Listings@miaxglobal.com or (609) 897-7308.