SIMPLEX TRADING, LLC has recently filed a 13F-HR report with the SEC, revealing a total of $183,823,872,854 in assets under management as of September 30, 2026. This filing is a significant indicator of the firm's investment strategies and positions in various securities.

The filing is crucial as it provides insights into SIMPLEX TRADING's investment decisions and portfolio composition, which can influence market trends and investor behavior. The substantial amount reported underscores the firm's growing impact in the financial sector.

Background

SIMPLEX TRADING, LLC is a prominent entity in the financial services industry, primarily engaged in investment management. The firm is incorporated in Delaware and operates from its headquarters located at 230 S. LaSalle Street, Suite 08-500, Chicago, IL 60604. The company has been active in filing various reports with the SEC, with its most recent 13F-HR submission dated November 4, 2026. Other recent filings include similar reports on August 12, 2026, and May 14, 2026.

What the Filing Says

The 13F-HR filing indicates that SIMPLEX TRADING holds a total of 10,469 positions in various securities. The significant total value of $183.8 billion reflects the firm's extensive portfolio, which includes a diverse range of investments across multiple sectors.

Impact

This filing may affect various stakeholders, including investors, analysts, and competitors in the investment management industry. The detailed disclosure of holdings can provide insights into market trends and potential investment opportunities. Firms like Goldman Sachs and Alcoa Corp may be particularly interested in the strategies employed by SIMPLEX TRADING as they navigate their own investment decisions.

What's Next

The filing does not specify what happens next for SIMPLEX TRADING, LLC. However, investors and market analysts will likely monitor the firm's future filings to gauge its ongoing investment strategies and market positioning.