According to Bloomberg News, Citadel Securities is taking a minority stake in Wolfe Research to help win new trading business as it makes a bigger push with institutional investors. The market-maker founded by Ken Griffin will execute trades on behalf of Wolfe’s clients, and its own customers will gain access to Wolfe’s research, according to a statement Friday. Citadel Securities is Wolfe’s first outside strategic investor, according to its founder and managing partner, Ed Wolfe, who declined to disclose the terms of the deal.

According to Markets Media, MEMX Group announced the successful completion of the MX2 Options rollout. MX2 Options launched with an initial 10 symbols on September 14, 2026. Over the following two weeks, the exchange continued to scale operations until all symbols went live on September 30.

FIF is pleased to welcome eflow to the FIF Community.

Nametags will be sent to the printers today, please register before 3pm ET to secure a printed nametag. FIF is excited to announce our annual Chicago event, sponsored by Cboe Global Markets. After opening remarks from Keith Petersen, VP of Market Data, there will be an equities panel and an options/futures panel. The equities panel will focus on topics such as Rule 611, Rule 605, CAT and overnight trading. The options/futures panel will focus on potential topics such as: extended hours trading in options, single stock futures, prediction markets, OPRA dynamic rebalance symbol...

On September 25, FIF submitted a comment letter in response to FINRA Regulatory Notice 26-15, which requests comment on modernizing FINRA’s best execution guidance. FIF would like to thank the members of the Equity Market Regulations Working Group for their contributions in the drafting of this comment letter.

FIF has scheduled the next call for the Digital Asset Securities Working Group for Monday September 28 at 2 pm ET. The Working Group will discuss the recent exemption from exchange and dealer registration granted by the SEC for Tokenized Securities Venues and Liquidity Providers in an AMM Liquidity Pool.

The next call for the 24x7 Trading Working Group will be on Tuesday September 29 at 11 am ET. The Working Group will review a testing update from SIAC, rule changes by MEMX, the Cboe exchanges and the NYSE exchanges, CAT updates, and an updated list of open items.

The TRACE Working Group will have its next call on Tuesday September 29 at 1 pm ET. The Working Group will discuss a revised draft FIF letter to FINRA and the Federal Reserve Board relating to implementation of the expansion of the TRACE affiliate - principal transaction indicator to transactions with affiliates that are FINRA members.

The Data & Technology Committee will have its next call on Wednesday September 30 at 10 am ET to review capacity, latency and volume data for the prior month for the equity, options, currency, crypto and futures markets. The spotlight presenters will be John Ramsay and Chris Twomey of IEX, who will discuss the launch of the IEX Options exchange facility.