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Who Owns Quest Diagnostics Inc

Every manager with more than $100m in listed equities files a 13F each quarter naming what they hold. These are the ones reporting a position in Quest Diagnostics Inc.

Who crossed 5% of DGX →
Managers holding
39
as of 2026-09-30
Reported value
$177M
summed across filings
Shares held
759.3K
Added vs trimmed
13 / 9
since each filer's last quarter

Positions as of 2026-09-30

Largest first. The move is against the previous quarter that manager filed, not the previous calendar quarter.

ManagerValue
Artemis Investment Management LLPCOM334.6K shtrimmed$78M
EASTERN BANKCOM207.7K shadded$48.4M
SAPIENT CAPITAL LLCCOM32.6K sh—$7.6M
Mn Services Vermogensbeheer B.V.COM32K shheld$7.5M
TOTH FINANCIAL ADVISORY CORPCOM31.8K shtrimmed$7.4M
MassMutual Private Wealth & Trust, FSBCommon / Ordinary Stock19.6K shtrimmed$4.6M
ZEVENBERGEN CAPITAL INVESTMENTS LLCCOM12.3K shadded$2.9M
Farther Finance Advisors, LLCStock9.3K shadded$2.2M
AMERICAN NATIONAL BANK & TRUSTCOM8.6K shtrimmed$2M
DIVERSIFIED MANAGEMENT INCCOM7.2K shadded$1.7M
GAMMA Investing LLCCommon Stock7.2K shadded$1.7M
Breakwater Capital GroupCOM5.4K shtrimmed$1.3M
DLK Investment Management, LLCCOM5.2K shheld$1.2M
Byrne Asset Management LLCCOM5.1K shtrimmed$1.2M
Martin Capital Partners, LLCCOM4.8K shtrimmed$1.1M
Venture Visionary Partners LLCCOM4.5K shadded$1M
Galvin, Gaustad & Stein, LLCCOM3.9K shadded$917.1K
STEPH & COCOM3.5K shtrimmed$813.9K
Wedmont Private CapitalCOM3.4K shadded$794.5K
Werlinich Asset Management, LLCCOM3.1K shheld$717.9K
Emergent Wealth Advisors, LLCCOM2.8K shheld$652.6K
Acropolis Investment Management, LLCCOM2.1K shtrimmed$494.8K
O'Keefe Stevens Advisory, Inc.COM1.9K shheld$437K
Sound Income Strategies, LLCCOM1.7K shadded$391K
Dakota Community Bank & Trust NACOM1.4K shheld$335.9K
Adelphi Trust CoCommon Stock1.3K shadded$295.3K
Whalen Wealth Management Inc.COM1.2K sh—$271.5K
CoreCap Advisors, LLCStock1.1K shheld$250.2K
ROCKLAND TRUST COCOM987 shadded$230K
FERGUSON WELLMAN CAPITAL MANAGEMENT, INCCOM941 sh—$219.3K
Hummer Financial Advisory Services IncCOM875 sh—$203.9K
Grove Bank & TrustCOM422 shheld$98.4K
Davis Capital ManagementStock364 shheld$84.8K
Aventus Investment Advisors, Inc.Stock170 shheld$39.6K
Rosenberg Matthew HamiltonStock110 shheld$25.6K
ELEVATION WEALTH PARTNERS, LLCCOM106 shadded$24.7K
ARMSTRONG ADVISORY GROUP, INCCOM54 shheld$12.6K
Retirement Wealth Solutions LLCCOM7 shadded$1.6K
Marquette Asset Management, LLCCOM6 shheld$1.4K

Source: quarterly 13F filings, via EDGAR. A 13F reports positions by CUSIP alone; each CUSIP here has been confirmed against OpenFIGI rather than matched by name, because a name match would attribute one company's shareholders to another. Positions are as of quarter end and can be months old by the time they are filed, and 13F covers long equity positions only — not shorts, and not most debt. The summed value is what these filers reported, not the company's institutional ownership.

More on DGX

Company overviewEverything on DGX in one place, with the price.SEC filingsWhat DGX's 8-Ks say happened: results, departures, auditor changes.Insider tradingWhat DGX's own officers and directors buy and sell.Funds holding itWhich funds and ETFs hold DGX, and how big a bet.LobbyingWhat DGX spends lobbying Congress, and on what.Who lobbies for itThe lobbyists on DGX's account, and who they worked for.Federal contractsWhat federal agencies pay DGX.PatentsWhat DGX is filing at the patent office.AircraftThe jets on DGX's registration.

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