State Street Corporation filed a Schedule 13G with the SEC on November 9, 2026, disclosing beneficial ownership of approximately 5% of Quest Diagnostics Inc common stock as of September 30, 2026.

Key Highlights

  • Aggregate beneficial ownership: State Street Corporation reported beneficial ownership of 5,563,421 shares of Quest Diagnostics Inc common stock.
  • Percent of class: The filing reports the aggregate amount represents 5% of the class of common stock (CUSIP 74834L100).
  • Shared voting power: State Street disclosed shared power to vote or direct the vote for 3,406,108 shares, with sole voting power of 0.
  • Shared dispositive power: State Street disclosed shared power to dispose or direct the disposition of 5,557,626 shares, with sole dispositive power of 0.
  • Filing entity type: State Street Corporation is classified as a parent holding company (HC) in the filing.
  • Subsidiaries involved: Ten subsidiaries, all classified as investment advisers (IA), are identified as the relevant entities that acquired the securities, including SSGA Funds Management, Inc. and State Street Global Advisors Trust Company, among others.

State Street Corporation's Schedule 13G Disclosure on Quest Diagnostics Common Stock

State Street Corporation, headquartered at One Congress Street, Suite 1, Boston, MA 02114, filed a Schedule 13G disclosing a 5% beneficial ownership position in Quest Diagnostics Inc, whose principal executive offices are located at 500 Plaza Drive, Secaucus, New Jersey 07094. According to the filing, the event requiring the statement occurred on September 30, 2026, and the document was signed on November 9, 2026, by Alok Maheshwary, Senior Vice President of State Street Corporation.

The filing indicates that State Street holds 0 shares with sole voting power and 0 shares with sole dispositive power. Shared voting power covers 3,406,108 shares, while shared dispositive power extends to 5,557,626 shares, according to the disclosure. The aggregate amount beneficially owned is reported as 5,563,421 shares, representing 5% of the class.

As a parent holding company, State Street identified ten subsidiaries through which the securities are held, all classified as investment advisers. These include SSGA Funds Management, Inc., State Street Global Advisors Trust Company, State Street Global Advisors Europe Limited, State Street Global Advisors Limited, State Street Global Advisors Asia Limited, State Street Global Advisors (Japan) Co., Ltd., State Street Global Advisors Singapore Limited, State Street Global Advisors, Australia, Limited, State Street Global Advisors, Ltd., and State Street Saudi Arabia Financial Solutions Company. The filing certifies that 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."

What Was Disclosed

State Street Corporation disclosed a 5% beneficial ownership stake in Quest Diagnostics Inc common stock as of September 30, 2026, with 5,563,421 shares held in aggregate, primarily through shared voting and dispositive powers exercised via ten investment adviser subsidiaries.