DGX Insider Trading

Insider Ownership Percentage: 0.88%
Insider Buying (Last 12 Months): $0.00
Insider Selling (Last 12 Months): $28,399,941.78

Quest Diagnostics Insider Trading History Chart

This chart shows the insider buying and selling history at Quest Diagnostics by year and by quarter.

Skip ChartChart Data in Insider Trading History Table

Quest Diagnostics Share Price & Price History

Current Price: $238.79
Price Change: Price Increase of +2.945 (1.25%)
As of 08/6/2026 03:59 PM ET

This chart shows the closing price history over time for DGX up to the past year.

Skip Chart and Table DataPrice Data in Insider Trading History Table
Days: 30 | 90 | 365

Quest Diagnostics Insider Trading History

Transaction DateInsider NameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
7/28/2026Mark E. DelaneySVPSell1,600$235.18$376,288.0010,335View SEC Filing Icon  
6/4/2026Karthik KuppusamySVPSell8,147$200.00$1,629,400.0013,510View SEC Filing Icon  
6/1/2026J. E DavisCEOSell10,000$194.14$1,941,400.00132,423View SEC Filing Icon  
3/5/2026Catherine T. DohertyEVPSell5,558$206.21$1,146,115.1867,122View SEC Filing Icon  
3/5/2026Michael E. PrevoznikSVPSell3,878$206.21$799,682.3837,557View SEC Filing Icon  
3/5/2026Patrick PlewmanSVPSell2,855$206.21$588,729.5515,198View SEC Filing Icon  
3/4/2026Karthik KuppusamySVPSell2,628$204.86$538,372.0813,441View SEC Filing Icon  
2/19/2026Catherine T. DohertyEVPSell1,433$204.83$293,521.3968,402View SEC Filing Icon  
2/19/2026Michael E. PrevoznikSVPSell1,111$204.83$227,566.1338,371View SEC Filing Icon  
2/19/2026Patrick PlewmanSVPSell958$204.83$196,227.1415,838View SEC Filing Icon  
2/10/2026Patrick PlewmanSVPSell5,662$204.00$1,155,048.0015,381View SEC Filing Icon  
11/25/2025J. E DavisCEOSell55,093$192.22$10,589,976.46120,480View SEC Filing Icon  
11/25/2025Vicky B. GreggDirectorSell1,250$191.76$239,700.0017,037View SEC Filing Icon  
11/18/2025Mark E. DelaneySVPSell7,946$187.35$1,488,683.107,530View SEC Filing Icon  
10/22/2025Gary M PfeifferDirectorSell1,482$182.40$270,316.8029,431View SEC Filing Icon  
9/26/2025Michael E. PrevoznikSVPSell227$188.13$42,705.5138,117View SEC Filing Icon  
9/24/2025Michael E. PrevoznikSVPSell175$187.02$32,728.5038,117View SEC Filing Icon  
9/23/2025Michael E. PrevoznikSVPSell28,288$187.12$5,293,250.5638,117View SEC Filing Icon  
8/21/2025Patrick PlewmanSVPSell1,975$185.00$365,375.0015,269View SEC Filing Icon  
8/19/2025Patrick PlewmanSVPSell4,532$183.00$829,356.0017,244View SEC Filing Icon  
8/15/2025Patrick PlewmanSVPSell1,975$180.00$355,500.0017,244View SEC Filing Icon  
8/6/2025Patrick PlewmanSVPSell5,535$175.00$968,625.0019,219View SEC Filing Icon  
7/31/2025Karthik KuppusamySVPSell2,210$170.00$375,700.008,450View SEC Filing Icon  
7/30/2025Karthik KuppusamySVPSell8,269$167.40$1,384,230.6010,660View SEC Filing Icon  
5/12/2025Mark E. DelaneySVPSell874$175.72$153,579.288,372View SEC Filing Icon  
4/2/2025J. E DavisCEOSell39,191$168.46$6,602,115.86127,623View SEC Filing Icon  
4/2/2025Karthik KuppusamySVPSell2,555$170.00$434,350.0010,575View SEC Filing Icon  
3/17/2025Michael E. PrevoznikSVPSell4,643$170.00$789,310.0038,117View SEC Filing Icon  
3/5/2025Catherine T. DohertyEVPSell5,370$174.13$935,078.1068,068View SEC Filing Icon  
2/27/2025Catherine T. DohertyEVPSell824$172.61$142,230.6469,178View SEC Filing Icon  
2/27/2025Michael E. PrevoznikSVPSell528$172.61$91,138.0839,031View SEC Filing Icon  
2/20/2025Michael E. PrevoznikSVPSell604$170.99$103,277.9639,845View SEC Filing Icon  
2/19/2025Catherine T. DohertyEVPSell535$169.71$90,794.8571,356View SEC Filing Icon  
2/5/2025Mark E. DelaneySVPSell403$164.30$66,212.904,624View SEC Filing Icon  
2/5/2025Vicky B. GreggDirectorSell1,250$164.57$205,712.5016,867View SEC Filing Icon  
11/6/2024Michael J. DeppeCAOSell18,755$154.05$2,889,207.7534,941View SEC Filing Icon  
10/28/2024Karthik KuppusamySVPSell1,775$156.92$278,533.009,734View SEC Filing Icon  
8/28/2024Karthik KuppusamySVPSell1,990$153.26$304,987.4011,459View SEC Filing Icon  
7/24/2024Mark E. DelaneySVPSell420$143.08$60,093.605,019View SEC Filing Icon  
4/29/2024Karthik KuppusamySVPSell1,760$140.00$246,400.0013,435View SEC Filing Icon  
2/29/2024Michael E. PrevoznikSVPSell5,611$125.88$706,312.6838,478View SEC Filing Icon  
2/28/2024Catherine T. DohertyEVPSell5,557$126.57$703,349.4969,599View SEC Filing Icon  
2/23/2024Vicky B. GreggDirectorSell2,500$126.64$316,600.0016,329View SEC Filing Icon  
2/22/2024Catherine T. DohertyEVPSell821$126.14$103,560.9470,800View SEC Filing Icon  
2/22/2024Michael E. PrevoznikSVPSell661$126.14$83,378.5440,206View SEC Filing Icon  
See Full Table

SEC Filings (Institutional Ownership Changes) for Quest Diagnostics (NYSE:DGX)

88.06% of Quest Diagnostics stock is owned by institutions. Institutional ownership can be a sign of analyst confidence in the fundamentals of the stock.

Institutional Buying and Selling by Quarter

This chart shows the instiutional buying and selling at DGX by year and by quarter.

Skip Institutional Buying and Selling Chart and Table DataRead Chart Data in Institutional Trading History Table

Quest Diagnostics Institutional Trading History

Reporting DateHedge FundShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
8/6/2026J.Safra Asset Management Corp4,621$0.98M0.0%N/A0.004%Search for SEC Filing on Google Icon
8/6/2026Global Retirement Partners LLC2,528$0.54M0.0%N/A0.002%Search for SEC Filing on Google Icon
8/6/2026Bank of New York Mellon Corp629,339$133.39M0.0%N/A0.570%Search for SEC Filing on Google Icon
8/6/2026State of Wyoming1,042$0.22M0.0%N/A0.001%Search for SEC Filing on Google Icon
8/6/2026ABN AMRO Bank N.V.101,667$21.52M0.3%N/A0.092%Search for SEC Filing on Google Icon
8/6/2026GSA Capital Partners LLP4,971$1.05M0.1%N/A0.005%Search for SEC Filing on Google Icon
8/6/2026One Wealth Advisors LLC1,407$0.30M0.0%N/A0.001%Search for SEC Filing on Google Icon
8/6/2026Clearstead Trust LLC944$0.20M0.0%N/A0.001%Search for SEC Filing on Google Icon
8/3/2026Oppenheimer Asset Management Inc.1,587$0.34M0.0%N/A0.001%Search for SEC Filing on Google Icon
8/3/2026Bryn Mawr Trust Advisors LLC2,283$0.48M0.0%N/A0.002%Search for SEC Filing on Google Icon
8/3/2026Mill Capital Management LLC1,620$0.34M0.0%N/A0.001%Search for SEC Filing on Google Icon
7/10/2026Tema ETFs LLC1,518$0.32M0.0%+10.6%0.001%Search for SEC Filing on Google Icon
7/10/2026G&S Capital LLC15,108$3.20M0.9%-1.2%0.014%Search for SEC Filing on Google Icon
7/10/2026Wasatch Advisors LP16,775$3.56M0.0%-5.2%0.015%Search for SEC Filing on Google Icon
7/10/2026Diversified Management Inc.2,596$0.55M0.1%-79.4%0.002%Search for SEC Filing on Google Icon
7/10/2026Handelsbanken Fonder AB34,476$7.31M0.0%-2.5%0.031%Search for SEC Filing on Google Icon
7/10/2026Fulton Bank N.A.4,172$0.88M0.0%-2.4%0.004%Search for SEC Filing on Google Icon
7/9/2026Centurion Wealth Management LLC1,110$0.24M0.1%-24.0%0.001%Search for SEC Filing on Google Icon
7/9/2026Hennion & Walsh Asset Management Inc.7,712$1.64M0.0%-6.4%0.007%Search for SEC Filing on Google Icon
7/8/2026Rockland Trust Co.967$0.21M0.0%-20.8%0.001%Search for SEC Filing on Google Icon
7/8/2026Victrix Investment Advisors1,210$0.26M0.1%-7.6%0.001%Search for SEC Filing on Google Icon
7/8/2026Czech National Bank31,508$6.68M0.0%+5.2%0.028%Search for SEC Filing on Google Icon
7/8/2026PensionDanmark Pensionsforsikringsaktieselskab14,000$2.97M0.0%+7.7%0.013%Search for SEC Filing on Google Icon
7/8/2026Assenagon Asset Management S.A.15,405$3.27M0.0%+39.1%0.014%Search for SEC Filing on Google Icon
7/8/2026Byrne Asset Management LLC5,078$1.08M0.6%-7.6%0.005%Search for SEC Filing on Google Icon
7/7/2026JGP Wealth Management LLC66,982$14.20M1.3%-0.9%0.061%Search for SEC Filing on Google Icon
7/7/2026GAMMA Investing LLC5,295$1.12M0.0%+36.3%0.005%Search for SEC Filing on Google Icon
7/7/2026Central Pacific Bank Trust Division1,607$0.34M0.0%+6.8%0.001%Search for SEC Filing on Google Icon
7/7/2026Grove Bank & Trust422$89K0.0%+245.9%0.000%Search for SEC Filing on Google Icon
7/7/2026CoreCap Advisors LLC1,073$0.23M0.0%+90.2%0.001%Search for SEC Filing on Google Icon
7/6/2026Hobart Private Capital LLC2,703$0.57M0.1%-2.0%0.002%Search for SEC Filing on Google Icon
7/2/2026MassMutual Private Wealth & Trust FSB20,135$4.27M0.1%-1.4%0.018%Search for SEC Filing on Google Icon
7/2/2026Versant Capital Management Inc820$0.17M0.0%-11.4%0.001%Search for SEC Filing on Google Icon
7/2/2026Hilltop National Bank7,504$1.59M0.3%-1.7%0.007%Search for SEC Filing on Google Icon
7/2/2026CX Institutional6,874$1.46M0.0%-6.7%0.006%Search for SEC Filing on Google Icon
7/1/2026Adelphi Trust Co1,230$0.26M0.2%+17.7%0.001%Search for SEC Filing on Google Icon
7/1/2026Eastern Bank189,969$40.26M0.6%+143.6%0.172%Search for SEC Filing on Google Icon
6/18/2026Pacer Advisors Inc.425,895$83.47M0.1%-4.9%0.385%Search for SEC Filing on Google Icon
6/8/2026Pine Valley Investments Ltd Liability Co19,955$3.91M0.2%-4.7%0.018%Search for SEC Filing on Google Icon
6/3/2026DV Trading LLC1,200$0.24M0.0%N/A0.001%Search for SEC Filing on Google Icon
6/3/2026Parallel Advisors LLC3,625$0.71M0.0%+7.2%0.003%Search for SEC Filing on Google Icon
6/3/2026NewEdge Advisors LLC11,958$2.34M0.0%-11.5%0.011%Search for SEC Filing on Google Icon
5/28/2026Cozad Asset Management Inc.11,529$2.26M0.2%+9.7%0.010%Search for SEC Filing on Google Icon
5/27/2026Alpine Woods Capital Investors LLC9,979$1.96M0.5%-48.6%0.009%Search for SEC Filing on Google Icon
5/26/2026Glenmede Trust Co. NA85,694$16.79M0.1%-3.3%0.077%Search for SEC Filing on Google Icon
5/22/2026Summitry LLC1,630$0.32M0.0%-17.4%0.001%Search for SEC Filing on Google Icon
5/19/2026Bank of America Corp DE1,752,902$343.53M0.0%+8.0%1.583%Search for SEC Filing on Google Icon
5/19/2026Kentucky Retirement Systems12,007$2.35M0.1%+71.6%0.011%Search for SEC Filing on Google Icon
5/19/2026Janus Henderson Group PLC10,393$2.04M0.0%-25.4%0.009%Search for SEC Filing on Google Icon
5/19/2026Arkadios Wealth Advisors5,840$1.15M0.0%-6.5%0.005%Search for SEC Filing on Google Icon
5/18/2026Amundi408,330$80.03M0.0%-12.0%0.369%Search for SEC Filing on Google Icon
5/18/2026EverSource Wealth Advisors LLC9,603$1.88M0.1%+61.2%0.009%Search for SEC Filing on Google Icon
5/18/2026California State Teachers Retirement System162,238$31.80M0.0%-3.4%0.147%Search for SEC Filing on Google Icon
5/18/2026Royal Bank of Canada198,534$38.91M0.0%-13.2%0.179%Search for SEC Filing on Google Icon
5/18/2026EdgePoint Investment Group Inc.2,243,869$439.75M3.5%+35.1%2.027%Search for SEC Filing on Google Icon
5/18/2026Empowered Funds LLC9,614$1.88M0.0%-61.5%0.009%Search for SEC Filing on Google Icon
5/16/2026The Manufacturers Life Insurance Company91,034$17.84M0.0%+0.3%0.082%Search for SEC Filing on Google Icon
5/16/2026Maverick Capital Ltd.2,756$0.54M0.0%-88.5%0.002%Search for SEC Filing on Google Icon
5/16/2026Quantinno Capital Management LP231,025$45.28M0.1%-14.3%0.209%Search for SEC Filing on Google Icon
5/16/2026Lazard Asset Management LLC48,586$9.52M0.0%-35.9%0.044%Search for SEC Filing on Google Icon
5/15/2026Gateway Wealth Partners LLC2,516$0.49M0.0%N/A0.002%Search for SEC Filing on Google Icon
5/15/2026Quadcap Wealth Management LLC1,095$0.22M0.0%N/A0.001%Search for SEC Filing on Google Icon
5/15/2026OMERS ADMINISTRATION Corp11,640$2.28M0.0%+642.8%0.011%Search for SEC Filing on Google Icon
5/15/2026Waverly Advisors LLC5,114$1M0.0%+8.2%0.005%Search for SEC Filing on Google Icon
5/14/2026Healthcare of Ontario Pension Plan Trust Fund170,912$33.50M0.1%+1.5%0.154%Search for SEC Filing on Google Icon
5/14/2026Dai ichi Life Insurance Company Ltd7,033$1.38M0.0%+35.3%0.006%Search for SEC Filing on Google Icon
5/14/2026Gabelli Funds LLC1,900$0.37M0.0%+11.8%0.002%Search for SEC Filing on Google Icon
5/14/2026Hilltop Holdings Inc.1,506$0.30M0.0%-11.3%0.001%Search for SEC Filing on Google Icon
5/14/2026Public Employees Retirement System of Ohio66,849$13.10M0.0%+3.7%0.060%Search for SEC Filing on Google Icon
5/14/2026M.D. Sass LLC299,459$58.69M4.4%N/A0.271%Search for SEC Filing on Google Icon
5/14/2026Modern Wealth Management LLC5,499$1.09M0.0%+1.9%0.005%Search for SEC Filing on Google Icon
5/14/2026Arrowstreet Capital Limited Partnership11,468$2.25M0.0%N/A0.010%Search for SEC Filing on Google Icon
5/14/2026Oak Associates Ltd. OH16,592$3.25M0.2%-4.9%0.015%Search for SEC Filing on Google Icon
5/14/2026Bank of Nova Scotia17,628$3.46M0.0%-73.5%0.016%Search for SEC Filing on Google Icon
5/14/2026Sei Investments Co.79,588$15.60M0.0%+11.2%0.072%Search for SEC Filing on Google Icon
5/14/2026Davis R M Inc.1,347$0.26M0.0%N/A0.001%Search for SEC Filing on Google Icon
5/13/2026Cetera Investment Advisers37,274$7.31M0.0%+28.9%0.034%Search for SEC Filing on Google Icon
5/13/2026Levin Capital Strategies L.P.8,500$1.67M0.1%+372.2%0.008%Search for SEC Filing on Google Icon
5/13/2026First Citizens Bank & Trust Co.2,975$0.58M0.0%-19.7%0.003%Search for SEC Filing on Google Icon
5/13/2026Acumen Wealth Advisors LLC12,504$2.45M0.7%+10.4%0.011%Search for SEC Filing on Google Icon
5/13/2026CI Investments Inc.1,309$0.26M0.0%-8.4%0.001%Search for SEC Filing on Google Icon
5/13/2026First Trust Advisors LP329,152$64.51M0.0%-6.4%0.297%Search for SEC Filing on Google Icon
5/12/2026Danica Pension Livsforsikringsaktieselskab8,322$1.63M0.0%-86.4%0.008%Search for SEC Filing on Google Icon
5/12/2026ABN Amro Investment Solutions76,360$14.97M0.2%+5.7%0.069%Search for SEC Filing on Google Icon
5/8/2026PNC Financial Services Group Inc.38,198$7.49M0.0%+4.0%0.035%Search for SEC Filing on Google Icon
5/8/2026Oslo Pensjonsforsikring AS547$0.11M0.0%N/A0.000%Search for SEC Filing on Google Icon
5/8/2026Rice Partnership LLC24,758$4.85M0.7%+1.0%0.022%Search for SEC Filing on Google Icon
5/8/2026Commerzbank Aktiengesellschaft FI6,686$1.31M0.0%+121.3%0.006%Search for SEC Filing on Google Icon
5/7/2026Commonwealth Financial Services LLC1,980$0.39M0.1%+9.5%0.002%Search for SEC Filing on Google Icon
5/7/2026Meeder Advisory Services Inc.3,306$0.65M0.0%-5.7%0.003%Search for SEC Filing on Google Icon
5/7/2026Lowe Brockenbrough & Co. Inc.14,787$2.90M0.1%-3.0%0.013%Search for SEC Filing on Google Icon
5/7/2026Dimensional Fund Advisors LP1,949,535$382.09M0.1%+0.9%1.761%Search for SEC Filing on Google Icon
5/7/2026Parallel Advisors LLC3,625$0.71M0.0%+7.2%0.003%Search for SEC Filing on Google Icon
5/7/2026Boston Common Asset Management LLC90,326$17.70M1.1%+16.9%0.082%Search for SEC Filing on Google Icon
5/7/2026KBC Group NV57,563$11.28M0.0%+2.2%0.052%Search for SEC Filing on Google Icon
5/7/2026SEB Asset Management AB139,951$27.43M0.1%N/A0.126%Search for SEC Filing on Google Icon
5/7/2026Swiss National Bank326,500$63.99M0.0%+6.5%0.295%Search for SEC Filing on Google Icon
5/7/2026AIA Group Ltd50,374$9.87M0.1%-8.7%0.046%Search for SEC Filing on Google Icon
5/7/2026Arjuna Capital8,329$1.63M0.4%-12.0%0.008%Search for SEC Filing on Google Icon
5/7/2026Ascent Wealth Partners LLC3,414$0.67M0.1%-2.3%0.003%Search for SEC Filing on Google Icon
Data available starting January 2016

See Full Table
Quest Diagnostics logo
Quest Diagnostics Incorporated provides diagnostic testing and services in the United States and internationally. The company develops and delivers diagnostic information services, such as routine, non-routine and advanced clinical testing, anatomic pathology testing, and other diagnostic information services. It offers diagnostic information services primarily under the Quest Diagnostics brand, as well as under the AmeriPath, Dermpath Diagnostics, ExamOne, and Quanum brands to physicians, hospitals, patients and consumers, health plans, government agencies, employers, retailers, pharmaceutical companies and insurers, and accountable care organizations through a network of laboratories, patient service centers, phlebotomists in physician offices, call centers and mobile phlebotomists, nurses, and other health and wellness professionals. The company also provides risk assessment services for the life insurance industry; and healthcare organizations and clinicians information technology solutions. Quest Diagnostics Incorporated was founded in 1967 and is headquartered in Secaucus, New Jersey.
Read More on Quest Diagnostics

Today's Range

Now: $238.79
Low: $235.32
High: $238.88

50 Day Range

MA: $210.59
Low: $192.26
High: $238.79

52 Week Range

Now: $238.79
Low: $171.18
High: $240.13

Volume

634,340 shs

Average Volume

1,120,914 shs

Market Capitalization

$26.35 billion

P/E Ratio

25.35

Dividend Yield

1.46%

Beta

0.56

Who are the company insiders with the largest holdings of Quest Diagnostics?

Quest Diagnostics' top insider shareholders include:
  1. Stephen H Rusckowski (CEO)
  2. Stephen H Rusckowski (Chairman)
  3. Stephen H Rusckowski (CEO)
  4. Mark Guinan (CFO)
  5. Mark Guinan (Insider)
  6. Catherine T Doherty (SVP)
  7. J E Davis (CEO)
  8. Jon R Cohen (SVP)
  9. J E Davis (EVP)
  10. Michael E Prevoznik (SVP)
Learn More about top insider investors at Quest Diagnostics.

Who are the major institutional investors of Quest Diagnostics?

Quest Diagnostics' top institutional shareholders include:
  1. Eastern Bank — 0.17%
  2. JGP Wealth Management LLC — 0.06%
  3. Handelsbanken Fonder AB — 0.03%
  4. Czech National Bank — 0.03%
  5. MassMutual Private Wealth & Trust FSB — 0.02%
  6. Wasatch Advisors LP — 0.02%
Learn More about top institutional investors of Quest Diagnostics stock.

Which institutional investors are selling Quest Diagnostics stock?

In the last quarter, DGX stock was sold by these institutional investors:
  1. Diversified Management Inc.
  2. Wasatch Advisors LP
  3. Handelsbanken Fonder AB
  4. JGP Wealth Management LLC
  5. Hennion & Walsh Asset Management Inc.
  6. CX Institutional
  7. Byrne Asset Management LLC
  8. Centurion Wealth Management LLC
In the previous year, company insiders that have sold Quest Diagnostics company stock include:
  1. J E Davis (CEO)
  2. Catherine T Doherty (EVP)
  3. Michael E Prevoznik (SVP)
  4. Gary M Pfeiffer (Director)
  5. Patrick Plewman (SVP)
  6. Vicky B Gregg (Director)
  7. Karthik Kuppusamy (SVP)
  8. Mark E Delaney (SVP)
Learn More investors selling Quest Diagnostics stock.

Which institutional investors are buying Quest Diagnostics stock?

During the last quarter, DGX stock was bought by institutional investors including:
  1. Eastern Bank
  2. Assenagon Asset Management S.A.
  3. Bryn Mawr Trust Advisors LLC
  4. Mill Capital Management LLC
  5. Oppenheimer Asset Management Inc.
  6. Czech National Bank
  7. GAMMA Investing LLC
  8. PensionDanmark Pensionsforsikringsaktieselskab