Latest Period
Q1 2026
Security Snapshot
QUEST DIAGNOSTICS INC - Common Stock (DGX) Institutional Ownership
CUSIP: 74834L100
13F Institutional Holders and Ownership History from Q1 2014 to Q1 2026
Institutions Reporting
1,059
Shares (Excl. Options)
102,088,525
Price
$195.98
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- Security type / class
- Equity / Common Stock
- Symbol
- DGX on NYSE
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 102,088,525
- Total 13F value
- $19,993,488,657
- Portfolio coverage rank
- 0.01%
- Share change
- -3,766,234
- Value change
- -$680,923,332
- Number of holders
- 1,059
- Shares outstanding
- 109,888,008
- SEC-reported price per share
- $190.84
- Insider filing price
- $190.84
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- DGX - QUEST DIAGNOSTICS INC - Common Stock is tracked under CUSIP 74834L100.
- 1059 institutions reported positions in Q1 2026.
- 4 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 1,045 to 1,059 between Q4 2025 and Q1 2026.
- SEC-reported value moved from $18,382,050,947 to $19,993,488,657.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 1059 institutions filings for Q1 2026.
Security key
74834L100
Latest holder period
Q1 2026
13F holders
1,059
13D/G owners
4
CIK / CUSIP context first
Open Q1 2026 holders
DGX full holder history
QUEST DIAGNOSTICS INC SEC filings
QUEST DIAGNOSTICS INC company facts
QUEST DIAGNOSTICS INC insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 74834L100:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
4
Security
DGX
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. | 8.4% | $1,644,681,434 | 9,308,815 | BlackRock, Inc. | 31 Mar 2025 | |||
| VANGUARD CAPITAL MANAGEMENT LLC | 7.5% | $1,621,649,641 | 8,274,567 | Vanguard Capital Management | 31 Mar 2026 | |||
| PRICE T ROWE ASSOCIATES INC /MD/ | 6.5% | +22% | $1,275,526,324 | +$214,831,656 | 7,209,622 | +20% | T. Rowe Price Associates, Inc. | 30 Jun 2025 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 5.5% | $1,194,817,351 | 6,096,629 | Vanguard Portfolio Management | 31 Mar 2026 |
As of 31 Mar 2026, 1,059 institutional investors reported holding 102,088,525 shares of QUEST DIAGNOSTICS INC - Common Stock (DGX). This represents 93% of the company’s total 109,888,008 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
63%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 8.3% | 9,172,292 | -3% | 0.03% | $1,797,585,732 |
| VANGUARD CAPITAL MANAGEMENT LLC | 6.5% | 7,145,672 | 0% | 0.03% | $1,400,408,799 |
| PRICE T ROWE ASSOCIATES INC /MD/ | 5.7% | 6,297,987 | +0.01% | 0.14% | $1,234,281,000 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 5.5% | 6,081,400 | 0% | 0.06% | $1,191,832,772 |
| STATE STREET CORP | 4.9% | 5,380,821 | -0.03% | 0.04% | $1,054,533,300 |
| Boston Partners | 3.7% | 4,012,232 | +2.5% | 0.83% | $786,652,146 |
| JPMORGAN CHASE & CO | 3.5% | 3,846,456 | -7.2% | 0.05% | $758,367,688 |
| GEODE CAPITAL MANAGEMENT, LLC | 2.8% | 3,086,308 | +1.9% | 0.04% | $602,658,595 |
| MORGAN STANLEY | 2.3% | 2,479,720 | -7.9% | 0.03% | $485,976,070 |
| EdgePoint Investment Group Inc. | 2% | 2,243,869 | +35% | 3.5% | $439,753,447 |
| DIMENSIONAL FUND ADVISORS LP | 1.8% | 1,949,535 | +0.93% | 0.08% | $382,085,386 |
| Grantham, Mayo, Van Otterloo & Co. LLC | 1.7% | 1,883,024 | +3.7% | 0.94% | $369,035,502 |
| VICTORY CAPITAL MANAGEMENT INC | 1.7% | 1,846,336 | -13% | 0.23% | $361,844,958 |
| WELLS FARGO & COMPANY/MN | 1.6% | 1,762,769 | -0.36% | 0.07% | $345,467,202 |
| BANK OF AMERICA CORP /DE/ | 1.6% | 1,752,902 | +8% | 0.03% | $343,533,753 |
| Invesco Ltd. | 1.5% | 1,638,487 | -1.7% | 0.05% | $321,110,683 |
| Davis Selected Advisers | 1.5% | 1,617,813 | +1.8% | 1.5% | $317,062,477 |
| GOLDMAN SACHS GROUP INC | 1.2% | 1,348,694 | -21% | 0.03% | $264,317,118 |
| NORTHERN TRUST CORP | 1% | 1,114,219 | +3.3% | 0.03% | $218,364,640 |
| FMR LLC | 0.86% | 942,218 | -22% | 0.01% | $184,655,952 |
| AMERICAN CENTURY COMPANIES INC | 0.79% | 867,331 | -0.36% | 0.09% | $169,979,895 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.77% | 846,603 | -0.04% | 0.03% | $165,917,256 |
| AMERIPRISE FINANCIAL INC | 0.73% | 807,477 | -0.73% | 0.04% | $158,252,826 |
| M&G PLC | 0.73% | 805,341 | -15% | 0.82% | $157,846,836 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 0.69% | 760,790 | +1.3% | 0.02% | $149,099,624 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
49
Latest
Q1 2026
Rows shown
1-25 of 49
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 102,088,525 | $19,993,488,657 | -$680,923,332 | $195.98 | 1,059 |
| 2025 Q4 | 106,036,979 | $18,382,050,947 | +$113,275,824 | $173.53 | 1,045 |
| 2025 Q3 | 104,715,199 | $19,935,956,212 | -$466,252,833 | $190.58 | 998 |
| 2025 Q2 | 107,271,403 | $19,256,616,676 | +$992,599,195 | $179.63 | 980 |
| 2025 Q1 | 102,095,860 | $17,269,213,125 | +$517,721,013 | $169.20 | 959 |
| 2024 Q4 | 99,154,244 | $14,960,999,827 | +$197,462,047 | $150.86 | 888 |
| 2024 Q3 | 97,427,136 | $15,114,402,933 | +$35,394,894 | $155.25 | 841 |
| 2024 Q2 | 97,129,285 | $13,298,131,286 | -$229,363,555 | $136.88 | 832 |
| 2024 Q1 | 98,950,699 | $13,164,670,867 | +$160,013,331 | $133.11 | 809 |
| 2023 Q4 | 97,517,517 | $13,442,486,923 | -$182,813,558 | $137.88 | 823 |
| 2023 Q3 | 98,413,094 | $11,999,285,981 | -$148,937,513 | $121.86 | 792 |
| 2023 Q2 | 99,453,851 | $13,976,778,355 | -$89,325,385 | $140.56 | 811 |
| 2023 Q1 | 100,344,532 | $14,186,536,692 | +$138,040,161 | $141.48 | 828 |
| 2022 Q4 | 99,384,483 | $15,542,704,726 | -$520,942,926 | $156.44 | 873 |
| 2022 Q3 | 102,421,380 | $12,576,248,409 | -$156,117,746 | $122.69 | 795 |
| 2022 Q2 | 103,623,750 | $13,783,524,431 | -$104,455,888 | $132.98 | 839 |
| 2022 Q1 | 104,706,282 | $14,331,909,322 | +$114,797,762 | $136.86 | 836 |
| 2021 Q4 | 103,868,351 | $17,926,559,101 | -$910,845,127 | $173.01 | 886 |
| 2021 Q3 | 109,428,506 | $15,895,978,535 | -$587,027,523 | $145.31 | 823 |
| 2021 Q2 | 113,518,424 | $14,971,166,699 | -$247,457,210 | $131.97 | 801 |
| 2021 Q1 | 115,605,235 | $14,825,548,517 | -$117,422,579 | $128.34 | 806 |
| 2020 Q4 | 116,573,431 | $13,881,718,733 | -$96,979,864 | $119.17 | 802 |
| 2020 Q3 | 117,646,327 | $13,461,768,653 | -$143,097,441 | $114.49 | 745 |
| 2020 Q2 | 118,673,236 | $13,537,429,978 | -$19,437,709 | $113.96 | 741 |
| 2020 Q1 | 119,284,390 | $9,578,500,735 | -$77,045,945 | $80.30 | 687 |