DGX
Quest Diagnostic (DGX)
NYSE
$197.19+$3.60 (+1.86%)
Price as of Jun 23, 2026 7:00 PM EDT
  • $21.4B
    Market Cap
  • 9.65%
    1-Year Change
  • Diagnostics & Research
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
VANGUARD GROUP INC
13.00%
14.4M
+140,450 (+0.98%)
Dec 31, 2025
BLACKROCK FUNDING, INC. /DE
9.15%
10.1M
-13,469 (-0.13%)
Dec 31, 2024
BLACKROCK INC.
9.09%
10.1M
-641,170 (-6.37%)
Jun 30, 2024
BLACKROCK, INC.
8.29%
9.2M
-286,926 (-3.13%)
Mar 31, 2026
ABRDN INC.
7.58%
8.4M
+8.4M (+100.00%)
Dec 31, 2010
N/A
6.46%
7.1M
+7.1M (+100.00%)
Mar 31, 2026
PRICE T ROWE ASSOCIATES INC /MD/
5.69%
6.3M
+830 (+0.01%)
Mar 31, 2026

Current Ownership Distribution

  • Institutions1.8B (66.53%)
  • Mutual Funds923.5M (33.38%)
  • Insiders2.3M (0.08%)
  • Other0 (0.00%)

Insider Transactions

  • 0.08% (2.3M)
    Current InsiderOwnership (%, shares)
  • 0
    Number of InsiderBuying (last 12 months)
  • $0.00
    Amount of InsiderBuying (last 12 months)
  • 7
    Number of InsiderSelling (last 12 months)
  • $203.5M
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
WENTWORTH TIMOTHY C
Award
Apr 01, 2026
$0.00
198
$0.00
198
WENTWORTH TIMOTHY C
Award
Mar 09, 2026
$0.00
215
$0.00
215
PREVOZNIK MICHAEL E
SVP & General Counsel
Sell
Mar 05, 2026
$799,682.38
3,878
$206.21
37,557
Doherty Catherine T.
EVP, Regional Businesses
Sell
Mar 05, 2026
$1.1M
5,558
$206.21
67,122
SAMAD SAMER ABDUL
Executive Vice President & CFO
Award
Mar 04, 2026
$2.9M
13,947
$204.86
40,988
Davis J. E.
CEO and President
Award
Mar 04, 2026
$10.6M
51,652
$204.86
168,837
PREVOZNIK MICHAEL E
SVP & General Counsel
Award
Mar 04, 2026
$1.5M
7,232
$204.86
44,789
KUPPUSAMY KARTHIK
SVP, Clinical Solutions
Award
Mar 04, 2026
$1.3M
6,200
$204.86
16,069
SAMAD SAMER ABDUL
Executive Vice President & CFO
In Kind
Mar 04, 2026
$1.6M
7,720
$204.86
33,268
DEPPE MICHAEL J
SVP, Corp. Controller & CAO
Award
Mar 04, 2026
$301,758.78
1,473
$204.86
35,946
PREVOZNIK MICHAEL E
SVP & General Counsel
In Kind
Mar 04, 2026
$687,100.44
3,354
$204.86
41,435
Doherty Catherine T.
EVP, Regional Businesses
Award
Mar 04, 2026
$2.3M
11,364
$204.86
78,486
Davis J. E.
CEO and President
In Kind
Mar 04, 2026
$5.4M
26,414
$204.86
142,423
KUPPUSAMY KARTHIK
SVP, Clinical Solutions
Sell
Mar 04, 2026
$538,372.08
2,628
$204.86
13,441
DEPPE MICHAEL J
SVP, Corp. Controller & CAO
In Kind
Mar 04, 2026
$153,645.00
750
$204.86
35,196
Doherty Catherine T.
EVP, Regional Businesses
In Kind
Mar 04, 2026
$1.2M
5,806
$204.86
72,680
DELANEY MARK E
SVP & Chief Commercial Officer
Award
Mar 04, 2026
$1.2M
5,682
$204.86
14,190
DELANEY MARK E
SVP & Chief Commercial Officer
In Kind
Mar 04, 2026
$476,504.36
2,326
$204.86
11,864
Plewman Patrick
SVP for Diagnostic Services
Sell
Mar 03, 2026
$85,169.30
410
$207.73
15,198
PREVOZNIK MICHAEL E
SVP & General Counsel
Sell
Mar 03, 2026
$109,265.98
526
$207.73
37,557
Doherty Catherine T.
EVP, Regional Businesses
Sell
Mar 03, 2026
$131,285.36
632
$207.73
67,122
SAMAD SAMER ABDUL
Executive Vice President & CFO
In Kind
Mar 02, 2026
$178,023.34
869
$204.86
27,041
KUPPUSAMY KARTHIK
SVP, Clinical Solutions
In Kind
Mar 02, 2026
$41,996.30
205
$204.86
9,869
DELANEY MARK E
SVP & Chief Commercial Officer
In Kind
Mar 02, 2026
$38,513.68
188
$204.86
8,508
PREVOZNIK MICHAEL E
SVP & General Counsel
In Kind
Mar 02, 2026
$58,999.68
288
$204.86
38,083
Davis J. E.
CEO and President
In Kind
Mar 02, 2026
$608,024.48
2,968
$204.86
127,185
DEPPE MICHAEL J
SVP, Corp. Controller & CAO
In Kind
Mar 02, 2026
$18,027.68
88
$204.86
34,473
Plewman Patrick
SVP for Diagnostic Services
In Kind
Mar 02, 2026
$47,117.80
230
$204.86
15,608
Doherty Catherine T.
EVP, Regional Businesses
In Kind
Mar 02, 2026
$132,749.28
648
$204.86
67,754
Davis J. E.
CEO and President
Sell
Mar 02, 2026
$2.1M
10,000
$212.52
117,185