InsiderTrades.com logo

DGX Insider Trading

Insider Ownership Percentage: 0.88%
Insider Buying (Last 12 Months): $0.00
Insider Selling (Last 12 Months): $27,334,988.66

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: $187.43
Price Change: ▼ Price Decrease of -3.408 (-1.79%)
As of 05/8/2026 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
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
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
5/7/2026Heartland Advisors Inc.46,986$9.21M0.5%-2.6%0.042%Search for SEC Filing on Google Icon
5/6/2026California Public Employees Retirement System237,792$46.60M0.0%-32.1%0.215%Search for SEC Filing on Google Icon
5/6/2026John G Ullman & Associates Inc.2,032$0.40M0.1%+5.2%0.002%Search for SEC Filing on Google Icon
5/6/2026Kera Capital Partners Inc.1,634$0.32M0.0%-8.2%0.001%Search for SEC Filing on Google Icon
5/6/2026Copeland Capital Management LLC155,348$30.45M0.7%-2.7%0.140%Search for SEC Filing on Google Icon
5/6/2026Catalyst Capital Advisors LLC13,425$2.63M0.0%-4.3%0.012%Search for SEC Filing on Google Icon
5/6/2026Assetmark Inc.10,558$2.07M0.0%+5.8%0.010%Search for SEC Filing on Google Icon
5/6/2026Bessemer Group Inc.3,816$0.75M0.0%+23.7%0.003%Search for SEC Filing on Google Icon
5/6/2026SteelPeak Wealth LLC1,378$0.27M0.0%+12.1%0.001%Search for SEC Filing on Google Icon
5/6/2026Allspring Global Investments Holdings LLC16,645$3.29M0.0%+2.0%0.015%Search for SEC Filing on Google Icon
5/6/2026Frazier Financial Advisors LLC166$33K0.0%+492.9%0.000%Search for SEC Filing on Google Icon
5/5/2026Wealthfront Advisers LLC24,884$4.88M0.0%+6.8%0.022%Search for SEC Filing on Google Icon
5/5/2026D.A. Davidson & CO.2,720$0.53M0.0%+18.8%0.002%Search for SEC Filing on Google Icon
5/5/2026Bank of New York Mellon Corp655,961$128.56M0.0%-2.2%0.593%Search for SEC Filing on Google Icon
5/5/2026Illinois Municipal Retirement Fund31,496$6.17M0.1%+12.1%0.028%Search for SEC Filing on Google Icon
5/5/2026Geneos Wealth Management Inc.810$0.16M0.0%+39.9%0.001%Search for SEC Filing on Google Icon
5/5/2026Sanctuary Advisors LLC25,500$5M0.0%+3.3%0.023%Search for SEC Filing on Google Icon
5/5/2026Sigma Planning Corp4,220$0.83M0.0%-12.2%0.004%Search for SEC Filing on Google Icon
5/5/2026Checchi Capital Advisers LLC1,619$0.32M0.0%+22.1%0.001%Search for SEC Filing on Google Icon
5/5/2026Roberts Glore & Co. Inc. IL11,402$2.24M0.6%-2.5%0.010%Search for SEC Filing on Google Icon
5/5/2026Avantax Planning Partners Inc.1,071$0.21M0.0%N/A0.001%Search for SEC Filing on Google Icon
5/4/2026Calamos Advisors LLC43,506$8.53M0.0%N/A0.039%Search for SEC Filing on Google Icon
5/4/2026Empirical Financial Services LLC d.b.a. Empirical Wealth Management3,171$0.62M0.0%-13.3%0.003%Search for SEC Filing on Google Icon
5/4/2026Bryn Mawr Trust Advisors LLC2,373$0.47M0.0%N/A0.002%Search for SEC Filing on Google Icon
5/4/2026Bleakley Financial Group LLC10,559$2.07M0.0%N/A0.010%Search for SEC Filing on Google Icon
5/4/2026State of Michigan Retirement System28,721$5.63M0.0%-1.4%0.026%Search for SEC Filing on Google Icon
5/4/2026Principal Financial Group Inc.526,033$103.10M0.1%-1.0%0.475%Search for SEC Filing on Google Icon
5/4/2026Chicago Partners Investment Group LLC3,270$0.67M0.0%-2.6%0.003%Search for SEC Filing on Google Icon
5/4/2026Gratus Wealth Advisors LLC2,012$0.39M0.1%-3.4%0.002%Search for SEC Filing on Google Icon
5/4/2026Paradiem LLC71,480$14.01M3.1%-9.1%0.065%Search for SEC Filing on Google Icon
5/4/2026Lifeworks Advisors LLC4,020$0.79M0.1%-5.5%0.004%Search for SEC Filing on Google Icon
5/4/2026Procyon Advisors LLC2,537$0.50M0.0%N/A0.002%Search for SEC Filing on Google Icon
5/2/2026Diversify Wealth Management LLC3,826$0.72M0.0%N/A0.003%Search for SEC Filing on Google Icon
5/1/2026Commonwealth of Pennsylvania Public School Empls Retrmt SYS25,624$5.02M0.0%-1.0%0.023%Search for SEC Filing on Google Icon
5/1/2026Midwest Trust Co95,200$18.66M0.2%-0.3%0.086%Search for SEC Filing on Google Icon
5/1/2026Fifth Third Bancorp35,096$6.88M0.0%+296.0%0.032%Search for SEC Filing on Google Icon
5/1/2026WealthShield Partners LLC2,221$0.44M0.0%-3.7%0.002%Search for SEC Filing on Google Icon
5/1/2026Farrow Financial Inc.13,311$2.61M1.5%-2.6%0.012%Search for SEC Filing on Google Icon
5/1/2026Candriam S.C.A.104,136$20.41M0.1%+2.4%0.094%Search for SEC Filing on Google Icon
5/1/2026Conning Inc.175,906$34.47M1.1%+1.5%0.159%Search for SEC Filing on Google Icon
5/1/2026Sequoia Financial Advisors LLC27,030$5.30M0.0%+1.2%0.024%Search for SEC Filing on Google Icon
5/1/2026Manning & Napier Advisors LLC17,296$3.41M0.0%-6.3%0.016%Search for SEC Filing on Google Icon
4/30/2026Hsbc Holdings PLC195,144$38.20M0.0%-14.1%0.176%Search for SEC Filing on Google Icon
4/30/2026Summit Securities Group LLC324$63K0.0%+96.4%0.000%Search for SEC Filing on Google Icon
4/30/2026Sumitomo Mitsui Trust Group Inc.264,754$51.89M0.0%-4.5%0.239%Search for SEC Filing on Google Icon
4/30/2026Resona Asset Management Co. Ltd.43,353$8.50M0.0%-0.3%0.039%Search for SEC Filing on Google Icon
4/30/2026Munich Reinsurance Co Stock Corp in Munich14,136$2.77M0.1%N/A0.013%Search for SEC Filing on Google Icon
4/30/2026Oregon Public Employees Retirement Fund12,563$2.46M0.0%-1.6%0.011%Search for SEC Filing on Google Icon
4/30/2026Quantum Portfolio Management LLC7,437$1.46M0.0%-3.5%0.007%Search for SEC Filing on Google Icon
4/29/2026Jericho Financial LLP2,482$0.49M0.3%-5.3%0.002%Search for SEC Filing on Google Icon
4/29/2026Delta Capital Management LLC17,810$3.49M1.2%+0.6%0.016%Search for SEC Filing on Google Icon
4/29/2026Unified Investment Management2,783$0.55M0.6%-8.8%0.003%Search for SEC Filing on Google Icon
4/29/2026Swedbank AB93,794$18.38M0.0%+0.3%0.085%Search for SEC Filing on Google Icon
4/29/2026Integrated Advisors Network LLC1,279$0.25M0.0%-12.7%0.001%Search for SEC Filing on Google Icon
4/29/2026Canvas Wealth Advisors LLC1,194$0.23M0.0%N/A0.001%Search for SEC Filing on Google Icon
4/28/2026Appleton Partners Inc. MA21,125$4.14M0.3%+0.7%0.019%Search for SEC Filing on Google Icon
4/28/2026Abel Hall LLC1,429$0.28M0.1%N/A0.001%Search for SEC Filing on Google Icon
4/28/2026Ascentis Independent Advisors1,428$0.28M0.0%+14.5%0.001%Search for SEC Filing on Google Icon
4/28/2026Koshinski Asset Management Inc.2,062$0.40M0.0%+4.2%0.002%Search for SEC Filing on Google Icon
4/28/2026V Square Quantitative Management LLC4,276$0.84M0.1%+21.0%0.004%Search for SEC Filing on Google Icon
4/28/2026QRG Capital Management Inc.22,351$4.38M0.0%+15.4%0.020%Search for SEC Filing on Google Icon
4/27/2026HB Wealth Management LLC12,034$2.36M0.0%+6.6%0.011%Search for SEC Filing on Google Icon
4/27/2026Moran Wealth Management LLC108,351$21.24M0.7%+4.1%0.098%Search for SEC Filing on Google Icon
4/27/2026World Investment Advisors3,252$0.64M0.0%+19.0%0.003%Search for SEC Filing on Google Icon
4/27/2026Private Advisor Group LLC5,415$1.06M0.0%-2.9%0.005%Search for SEC Filing on Google Icon
4/27/2026Optas LLC1,704$0.33M0.1%-7.7%0.002%Search for SEC Filing on Google Icon
4/27/2026MOR Wealth Management LLC1,244$0.24M0.1%-19.0%0.001%Search for SEC Filing on Google Icon
4/27/2026Y Intercept Hong Kong Ltd13,146$2.58M0.0%-56.0%0.012%Search for SEC Filing on Google Icon
4/27/2026Fjarde AP Fonden Fourth Swedish National Pension Fund79,920$15.66M0.1%+58.8%0.072%Search for SEC Filing on Google Icon
4/27/2026Elevation Point Wealth Partners LLC6,452$1.26M0.0%+173.0%0.006%Search for SEC Filing on Google Icon
4/25/2026Boston Trust Walden Corp30,390$5.96M0.0%+5.3%0.027%Search for SEC Filing on Google Icon
4/25/2026Keybank National Association OH5,699$1.12M0.0%-24.1%0.005%Search for SEC Filing on Google Icon
4/24/2026Essex Financial Services Inc.2,722$0.53M0.0%+10.2%0.002%Search for SEC Filing on Google Icon
4/24/2026Stegent Equity Advisors Inc.3,061$0.60M0.5%N/A0.003%Search for SEC Filing on Google Icon
4/24/2026Fulton Bank N.A.4,274$0.84M0.0%+2.2%0.004%Search for SEC Filing on Google Icon
4/24/2026TKG Advisors LLC14,359$2.81M1.2%-2.2%0.013%Search for SEC Filing on Google Icon
4/24/2026USS Investment Management Ltd19,068$3.74M0.0%+18.5%0.017%Search for SEC Filing on Google Icon
4/24/2026IFM Investors Pty Ltd23,777$4.66M0.0%+0.8%0.021%Search for SEC Filing on Google Icon
4/24/2026Key Financial Inc128$25K0.0%+1,728.6%0.000%Search for SEC Filing on Google Icon
4/24/2026iA Global Asset Management Inc.10,997$2.16M0.0%-4.0%0.010%Search for SEC Filing on Google Icon
4/23/2026Moss Adams Wealth Advisors LLC5,136$1.01M0.1%N/A0.005%Search for SEC Filing on Google Icon
4/23/2026Klein Pavlis & Peasley Financial Inc.6,488$1.27M0.7%+16.0%0.006%Search for SEC Filing on Google Icon
4/23/2026Apollon Wealth Management LLC6,603$1.29M0.0%-7.1%0.006%Search for SEC Filing on Google Icon
4/22/2026Patton Fund Management Inc.11,773$2.31M0.4%-63.3%0.011%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: $187.43
Low: $186.23
High: $192.20

50 Day Range

MA: $198.21
Low: $189.04
High: $211.75

52 Week Range

Now: $187.43
Low: $164.65
High: $213.50

Volume

761,460 shs

Average Volume

1,081,500 shs

Market Capitalization

$20.75 billion

P/E Ratio

20.71

Dividend Yield

1.80%

Beta

0.6

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. Dimensional Fund Advisors LP — 1.76%
  2. Bank of New York Mellon Corp — 0.59%
  3. Principal Financial Group Inc. — 0.48%
  4. Swiss National Bank — 0.29%
  5. Sumitomo Mitsui Trust Group Inc. — 0.24%
  6. California Public Employees Retirement System — 0.21%
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. California Public Employees Retirement System
  2. Pictet Asset Management Holding SA
  3. Hsbc Holdings PLC
  4. Patton Fund Management Inc.
  5. Y Intercept Hong Kong Ltd
  6. Bank of New York Mellon Corp
  7. Assenagon Asset Management S.A.
  8. Sumitomo Mitsui Trust Group Inc.
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. SEB Asset Management AB
  2. Calamos Advisors LLC
  3. SG Americas Securities LLC
  4. Fjarde AP Fonden Fourth Swedish National Pension Fund
  5. Fifth Third Bancorp
  6. Swiss National Bank
  7. Dimensional Fund Advisors LP
  8. Munich Reinsurance Co Stock Corp in Munich

Quest Diagnostics Active Insiders

Stephen H Rusckowski
Stephen H Rusckowski (Age 67)
CEO
J. E Davis
J. E Davis (Age 63)
CEO
1 recent trades
Mark Guinan
Mark Guinan (Age 63)
CFO
Michael J Deppe (Age 59)
CAO
Gail R Wilensky
Gail R Wilensky
Director
Daniel Stanzione
Daniel Stanzione
Director
Timothy M Ring
Timothy M Ring
Director
Vicky B Gregg
Vicky B Gregg
Director
1 recent trades
Gary M Pfeiffer
Gary M Pfeiffer
Director
Catherine T Doherty
Catherine T Doherty
SVP
2 recent trades
Michael E Prevoznik
Michael E Prevoznik (Age 64)
SVP
2 recent trades
Karthik Kuppusamy
Karthik Kuppusamy
SVP
1 recent trades
Mark E Delaney
Mark E Delaney
SVP
1 recent trades
Patrick Plewman
Patrick Plewman
SVPfor Diagnostic Services
3 recent trades