Latest Period
Q2 2026
Security Snapshot
QUEST DIAGNOSTICS INC - Common Stock (DGX) Institutional Ownership
CUSIP: 74834L100
13F Institutional Holders and Ownership History from Q1 2014 to Q2 2026
Institutions Reporting
627
Shares (Excl. Options)
34,287,534
Price
$211.95
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- Security type / class
- Equity / Common Stock
- Symbol
- DGX on NYSE
- All holders as of 30 Jun 2026
- Q2 2026
- Total 13F shares
- 34,287,534
- Total 13F value
- $7,251,736,152
- Portfolio coverage rank
- 0.01%
- Share change
- +1,269,405
- Value change
- +$269,440,308
- Number of holders
- 627
- Shares outstanding
- 109,888,008
- SEC-reported price per share
- $212.38
- Insider filing price
- $212.38
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.
- 627 institutions reported positions in Q2 2026.
- 4 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 1,065 to 627 between Q1 2026 and Q2 2026.
- SEC-reported value moved from $20,081,610,832 to $7,251,736,152.
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 627 institutions filings for Q2 2026.
Security key
74834L100
Latest holder period
Q2 2026
13F holders
627
13D/G owners
4
CIK / CUSIP context first
Open Q2 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 30 Jun 2026, 627 institutional investors reported holding 34,287,534 shares of QUEST DIAGNOSTICS INC - Common Stock (DGX). This represents 31% 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
26%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 8.4% | 9,275,411 | +1.1% | 0.03% | $1,965,923,399 |
| STATE STREET CORP | 5% | 5,516,643 | +2.5% | 0.03% | $1,169,252,484 |
| Boston Partners | 4.3% | 4,744,473 | +18% | 0.89% | $1,004,552,880 |
| VICTORY CAPITAL MANAGEMENT INC | 1.4% | 1,550,556 | -16% | 0.18% | $328,640,375 |
| M&G PLC | 0.72% | 795,650 | -1.2% | 0.84% | $168,677,800 |
| DekaBank Deutsche Girozentrale | 0.68% | 748,680 | 0% | 0.26% | $146,187,000 |
| Bank of New York Mellon Corp | 0.57% | 629,339 | -4.1% | 0.02% | $133,388,337 |
| DEUTSCHE BANK AG\ | 0.53% | 585,895 | +6.4% | 0.04% | $124,180,445 |
| PRINCIPAL FINANCIAL GROUP INC | 0.47% | 517,225 | -1.7% | 0.05% | $109,630,811 |
| Artemis Investment Management LLP | 0.43% | 467,921 | +4.6% | 0.88% | $99,175,856 |
| ENVESTNET ASSET MANAGEMENT INC | 0.39% | 428,564 | +3.9% | 0.02% | $90,834,224 |
| M.D. Sass, LLC | 0.33% | 360,453 | +20% | 5.1% | $76,397,960 |
| CITIGROUP INC | 0.29% | 315,584 | +9.9% | 0.03% | $66,888,058 |
| Mitsubishi UFJ Asset Management Co., Ltd. | 0.24% | 268,354 | +6.7% | 0.03% | $56,877,630 |
| Sumitomo Mitsui Trust Group, Inc. | 0.24% | 258,597 | -2.3% | 0.03% | $54,809,634 |
| Eurizon Capital SGR S.p.A. | 0.2% | 222,564 | -7.6% | 0.13% | $47,173,414 |
| EASTERN BANK | 0.17% | 189,969 | +144% | 0.62% | $40,263,890 |
| CONNING INC. | 0.17% | 186,734 | +6.2% | 1.2% | $39,578,271 |
| SEB Asset Management AB | 0.17% | 182,906 | +31% | 0.15% | $38,766,863 |
| SG Americas Securities, LLC | 0.15% | 162,837 | -25% | 0.02% | $34,513,000 |
| COOKSON PEIRCE & CO INC | 0.14% | 155,589 | -0.48% | 1.1% | $32,977,089 |
| BRAUN STACEY ASSOCIATES INC | 0.14% | 154,396 | -1.6% | 0.93% | $32,724,232 |
| Willis Investment Counsel | 0.14% | 151,500 | -0.2% | 1.5% | $32,110,425 |
| Copeland Capital Management, LLC | 0.13% | 144,784 | -6.8% | 0.63% | $30,686,967 |
| LPL Financial LLC | 0.13% | 143,079 | +29% | 0.01% | $30,325,576 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
50
Latest
Q2 2026
Rows shown
1-25 of 50
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q2 | 34,287,534 | $7,251,736,152 | +$269,440,308 | $211.95 | 627 |
| 2026 Q1 | 102,538,175 | $20,081,610,832 | -$607,228,573 | $195.98 | 1,065 |
| 2025 Q4 | 106,037,113 | $18,382,074,200 | +$113,275,824 | $173.53 | 1,046 |
| 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 |