Princeton, N.J. – October 4, 2016 – MIAX Options Exchange today announced that over 22.9 million contracts were executed on MIAX Options in September 2016, equating to an average daily volume (ADV) of over 1 million contracts. The September volume represents a 1.6% increase from the 22.5+ million contracts executed in August 2016 and a 14.1% increase from the 20.1+ million contracts executed in September 2015. MIAX Options’ year-to-date total as of September 2016 of over 191 million contracts represents a 2.4% increase over the 186+ million contracts achieved during the same time period in 2015. MIAX Options’ September equity options market share of 7.20% represents an 11.6% increase from the 6.45% achieved in September 2015 and a 7.8% decrease from the 7.81% achieved in August 2016. For the entire U.S. equity options industry, September’s ADV for its 21 trading days was over 15.1 million contracts, or an 2.3% increase from September 2015’s ADV of over 14.8 million contracts for its 21 trading days.

Other achievements include:

• During August 2016, MIAX Options ranked #1 out of all U.S. equity options exchanges in percentage of time at the National Best Bid/Offer (NBBO) in aggregate across all option classes. This marked the thirteenth month in a row that MIAX Options achieved this distinction.

• During August 2016, MIAX Options ranked #1 out of all U.S. equity options exchanges in percentage of time at the NBBO in aggregate across all Penny Pilot option classes. This marked the twelfth month in a row that MIAX Options achieved this distinction. Statistics for both all option classes and Penny Pilot option classes were provided by the TABB Group.

https://www.miaxglobal.com/sites/default/files/press_release-files/MIAX_Press_Release_09012016.pdf

Corporate Communications Contact:

Dominique Prunetti-Miller

(609) 897-1465

dprunetti@miami-holdings.com

About MIAX Options and MIH

MIAX Options is a fully electronic options trading exchange. MIAX Options has assembled a team with deep rooted experience in developing, operating and trading on options exchanges. Its trading platform has been developed in-house and designed from the ground up for the unique functional and performance demands of derivatives trading. MIAX Options now lists and trades options on over 2,600 multi-listed classes. MIAX Options’ unparalleled system throughput is approximately 38 million quotes per second. The average latency for a single quote on MIAX Options is approximately 16.21 microseconds for a full round trip. At the 99th percentile, the latency on MIAX Options is approximately 23.90 microseconds. At the 99.9th percentile, the latency on MIAX Options is approximately 53.71 microseconds. The executive offices and technology development center as well as the National Operations Center for the MIAX Options are located in Princeton, New Jersey.

MIAX Options, Miami International Technologies, LLC (MIAX Technologies), MIAX Global, LLC (MIAX Global) and MIAX PEARL, LLC (MIAX PEARL) are wholly-owned subsidiaries of Miami International Holdings, Inc. (MIH). MIAX Technologies is MIH’s technology subsidiary for the sale and/or license of the trading technology developed by MIAX Options. MIAX Global focuses on merger, acquisition and joint venture activities of MIH. MIAX Global also provides technology and other services outside of North America, with its initial concentration being on Europe and Latin America. MIAX PEARL will be MIH’s second fully electronic options trading exchange and will leverage the industry leading technology and infrastructure developed by MIAX Options to employ a price-time allocation model. MIAX PEARL is expected to launch in the first quarter of 2017, pending approval from the SEC.

Disclaimer and Cautionary Note Regarding Forward-Looking Statements

The press release shall not constitute an offer to sell or a solicitation of an offer to purchase any securities of MIH, and shall not constitute an offer, solicitation or sale in any state or jurisdiction in which such offer; solicitation or sale would be unlawful. This press release may contain forward-looking statements, including forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Such forward-looking statements include, but are not limited to, statements concerning the plans, objectives, expectations and intentions and other statements that are not historical or current facts of MIH, together with its subsidiaries, including MIAX Options (the Company). Forward-looking statements include, but are not limited to, statements about the possible or assumed future results of operations of the Company; the competitive position of the Company; potential growth opportunities available to the Company; the expectation with respect to securities, options and future markets and general economic conditions; the effects of competition on the Company’s business; and the impact of future legislation and regulatory changes on the Company’s business. Forward-looking statements are based on the Company’s current expectations and involve risks and uncertainties that could cause actual results to differ materially from those expressed or implied in such forward-looking statements.