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Quest Diagnostic (DGX)
NYSE
$237.34-$1.01 (-0.42%)
Price as of Aug 07, 2026 7:46 PM EDT- $26.3BMarket Cap
- 37.06%1-Year Change
- Diagnostics & ResearchIndustry
Quest Diagnostic (DGX)
$237.34-$1.01 (-0.42%)
Top Holders
Institutional
Mutual Funds
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
VANGUARD GROUP INC | 13.04% | 14.4M | +140,450 (+0.98%) | Dec 31, 2025 |
BLACKROCK FUNDING, INC. /DE | 9.17% | 10.1M | -13,469 (-0.13%) | Dec 31, 2024 |
BLACKROCK INC. | 9.11% | 10.1M | -641,170 (-6.37%) | Jun 30, 2024 |
BLACKROCK, INC. | 8.40% | 9.3M | +103,119 (+1.11%) | Jun 30, 2026 |
ABRDN INC. | 7.60% | 8.4M | +8.4M (+100.00%) | Dec 31, 2010 |
PRICE T ROWE ASSOCIATES INC /MD/ | 5.71% | 6.3M | +830 (+0.01%) | Mar 31, 2026 |
STATE STREET CORP | 5.00% | 5.5M | +135,822 (+2.46%) | Jun 30, 2026 |
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
VANGUARD INDEX FUNDS | 9.53% | 10.5M | -47,408 (-0.45%) | Mar 31, 2026 |
MFS SERIES TRUST IX | 7.05% | 7.8M | 0 (0.00%) | Apr 30, 2026 |
MUTUAL OF AMERICA INVESTMENT CORP | 5.66% | 6.3M | 0 (0.00%) | Mar 31, 2026 |
AMERICAN CENTURY INVESTMENT TRUST | 5.17% | 5.7M | 0 (0.00%) | Mar 31, 2026 |
TRANSAMERICA FUNDS | 3.86% | 4.3M | 0 (0.00%) | Apr 30, 2026 |
THOMPSON IM FUNDS INC | 3.37% | 3.7M | 0 (0.00%) | May 31, 2026 |
Invesco Exchange-Traded Self-Indexed Fund Trust | 2.10% | 2.3M | 0 (0.00%) | May 31, 2026 |
Current Ownership Distribution
- Institutions1.9B (65.79%)
- Mutual Funds972.4M (34.13%)
- Insiders2.3M (0.08%)
- Other0 (0.00%)
Insider Transactions
- 0.08% (2.3M)Current InsiderOwnership (%, shares)
- 0Number of InsiderBuying (last 12 months)
- $0.00Amount of InsiderBuying (last 12 months)
- 7Number of InsiderSelling (last 12 months)
- $199.4MAmount of InsiderSelling (last 12 months)
Insider Name & Title | Type | Date
| Transaction Value | Shares | Share Price | Shares After Transactions |
|---|---|---|---|---|---|---|
DELANEY MARK E SVP & Chief Commercial Officer | Sell | Jul 28, 2026 | $376,288.00 | 1,600 | $235.18 | 10,335 |
DELANEY MARK E SVP & Chief Commercial Officer | Small | Jul 22, 2026 | $7,031.44 | 34 | $206.81 | 11,935 |
Lassiter Wright III | Small | Jul 22, 2026 | $1,240.88 | 6 | $206.81 | 10,323 |
SAMAD SAMER ABDUL Executive Vice President & CFO | Award | Jul 22, 2026 | $21,094.31 | 102 | $206.81 | 33,478 |
Plewman Patrick SVP for Diagnostic Services | Small | Jul 22, 2026 | $9,513.12 | 46 | $206.81 | 15,293 |
Gregg Vicky B | Award | Jul 22, 2026 | $14,890.18 | 72 | $206.81 | 18,386 |
KUPPUSAMY KARTHIK SVP, Clinical Solutions | Small | Jul 22, 2026 | $7,651.86 | 37 | $206.81 | 13,557 |
CARTER ROBERT B | Small | Jul 22, 2026 | $2,274.84 | 11 | $206.80 | 3,864 |
MAIN TIMOTHY L | Small | Jul 22, 2026 | $4,343.01 | 21 | $206.81 | 22,460 |
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 |