AQR Capital Management, LLC and AQR Capital Management Holdings, LLC filed a Schedule 13G with the SEC on November 13, 2026, disclosing a combined beneficial ownership of 1,396,654 shares of Medpace Holdings, Inc. common stock, representing 5.00% of the class as of September 30, 2026.

Key Highlights

  • Aggregate beneficial ownership: AQR Capital Management, LLC and AQR Capital Management Holdings, LLC each report 1,396,654 shares of Medpace Holdings common stock beneficially owned.
  • Percent of class: The 1,396,654 shares represent 5.00% of the outstanding class, according to the filing.
  • Shared voting power: Both reporting persons report shared voting power over 1,373,655 shares, with sole voting power of 0.
  • Shared dispositive power: Both reporting persons report shared dispositive power over 1,396,654 shares, with sole dispositive power of 0.
  • Event date: The date of the event requiring this filing is stated as September 30, 2026.
  • Relationship between filers: According to the filing, AQR Capital Management, LLC is a wholly owned subsidiary of AQR Capital Management Holdings, LLC.
  • Ordinary course certification: The filing states the securities "were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer."

AQR Capital Discloses 5.00% Position in Medpace Holdings as of September 30, 2026

AQR Capital Management, LLC and its parent, AQR Capital Management Holdings, LLC, filed a Schedule 13G on November 13, 2026 to report beneficial ownership of shares in Medpace Holdings, Inc. (NASDAQ:MEDP), the Cincinnati, Ohio-based company whose common stock carries a $0.01 par value and CUSIP number 58506Q109. The triggering event date for the filing is listed as September 30, 2026.

According to the filing, both reporting persons beneficially own an aggregate of 1,396,654 shares, equaling 5.00% of the class. Neither entity holds sole voting or sole dispositive power over any of those shares. Instead, the filing reports shared voting power of 1,373,655 shares and shared dispositive power of 1,396,654 shares for each of the two filers. The 22,999-share difference between the shared voting figure and the shared dispositive figure is stated in the filing without further explanation.

AQR Capital Management, LLC is classified as an investment adviser (type "IA") and AQR Capital Management Holdings, LLC is classified as a holding company (type "HC") in the filing. Both entities are organized in the United States and share a principal business address at One Greenwich Plaza, Suite 130, Greenwich, Connecticut 06830. The filing was signed by Henry Parkin as Authorized Signatory on behalf of both entities on November 13, 2026.

What Was Disclosed

AQR Capital Management, LLC and AQR Capital Management Holdings, LLC disclosed a 5.00% beneficial ownership stake of 1,396,654 shares in Medpace Holdings, Inc. common stock via a Schedule 13G, with the event date of September 30, 2026 and filing date of November 13, 2026.