# QUEST DIAGNOSTICS INC COM

QUEST DIAGNOSTICS INC COM is a security (CUSIP 74834L100) tracked across SEC portfolio filings. 1,132 institutional managers reported $18.2B on Form 13F as of 2026-06-30; 77 registered fund positions totaling $1.5B via N-PORT as of 2026-05-31.

## Summary

- Issuer: QUEST DIAGNOSTICS INC
- Class: COM
- CUSIP: 74834L100
- Asset category: EC
- 13F holders: 1,132
- 13F value: $18.2B
- 13F period: 2026-06-30
- N-PORT fund positions: 77
- N-PORT value: $1.5B
- N-PORT report: 2026-05-31

## Top institutional holders (Form 13F)

_Showing 15 of 1,132 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $2.5B | 14,392,082 |
| BlackRock, Inc. | New York, NY | $1.8B | 9,172,292 |
| STATE STREET CORP | BOSTON, MA | $1.1B | 5,380,821 |
| Boston Partners | BOSTON, MA | $1.0B | 4,744,473 |
| JPMORGAN CHASE & CO | NEW YORK, NY | $758.4M | 3,846,456 |
| [GEODE CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/115504) | BOSTON, MA | $602.7M | 3,086,308 |
| MORGAN STANLEY | NEW YORK, NY | $486.0M | 2,479,720 |
| EdgePoint Investment Group Inc. | TORONTO, A6 | $439.8M | 2,243,869 |
| DIMENSIONAL FUND ADVISORS LP | AUSTIN, TX | $382.1M | 1,949,535 |
| Grantham, Mayo, Van Otterloo & Co. LLC | Boston, MA | $369.0M | 1,883,024 |
| VICTORY CAPITAL MANAGEMENT INC | San Antonio, TX | $361.8M | 1,846,336 |
| WELLS FARGO & COMPANY/MN | SAN FRANCISCO, CA | $345.5M | 1,762,769 |
| BANK OF AMERICA CORP /DE/ | CHARLOTTE, NC | $343.5M | 1,752,902 |
| [Davis Selected Advisers](https://search.stillhousedata.com/firm/108674) | TUCSON, AZ | $317.1M | 1,617,813 |
| GOLDMAN SACHS GROUP INC | NEW YORK, NY | $264.3M | 1,348,694 |

## Top fund holders (N-PORT)

_Showing 15 of 77 fund positions by value._

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| State Street(R) SPDR(R) S&P 500(R) ETF Trust | State Street(R) SPDR(R) S&P 500(R) ETF Trust | $249.9M | 3.83% |
| [T. Rowe Price Dividend Growth Fund, Inc.](https://search.stillhousedata.com/fund/S000002075) | T. ROWE PRICE DIVIDEND GROWTH FUND, INC. | $224.4M | 99.03% |
| [T. Rowe Price Value Fund, Inc.](https://search.stillhousedata.com/fund/S000002125) | T. ROWE PRICE VALUE FUND, INC. | $180.9M | 56.75% |
| [T. Rowe Price U.S. Large-Cap Core Fund, Inc.](https://search.stillhousedata.com/fund/S000026126) | T. ROWE PRICE U.S. LARGE-CAP CORE FUND, INC. | $168.5M | 102.04% |
| [Invesco S&P 500 Equal Weight ETF](https://search.stillhousedata.com/fund/S000060812) | Invesco Exchange-Traded Fund Trust | $163.4M | 18.59% |
| [JPMorgan Mid Cap Value Fund](https://search.stillhousedata.com/fund/S000004475) | J.P. Morgan Fleming Mutual Fund Group, Inc. | $159.5M | 146.98% |
| [AB Relative Value Portfolio](https://search.stillhousedata.com/fund/S000010448) | AB VARIABLE PRODUCTS SERIES FUND, INC. | $60.8M | 584.41% |
| Liberty All-Star Equity Fund | LIBERTY ALL STAR EQUITY FUND | $25.1M | 133.53% |
| [AB RELATIVE VALUE FUND, INC.](https://search.stillhousedata.com/fund/S000010080) | AB RELATIVE VALUE FUND, INC. | $23.0M | 123.46% |
| [VANGUARD STRATEGIC EQUITY FUND](https://search.stillhousedata.com/fund/S000002593) | VANGUARD HORIZON FUNDS | $21.5M | 21.21% |
| [Selected American Shares](https://search.stillhousedata.com/fund/S000003448) | SELECTED AMERICAN SHARES INC | $19.4M | 99.55% |
| Eaton Vance Tax-Managed Diversified Equity Income Fund | Eaton Vance Tax-Managed Diversified Equity Income Fund | $15.1M | 60.68% |
| [Large Cap Index Master Portfolio](https://search.stillhousedata.com/fund/S000033023) | Master Investment Portfolio | $12.9M | 3.56% |
| [VANGUARD BALANCED INDEX FUND](https://search.stillhousedata.com/fund/S000002560) | VANGUARD VALLEY FORGE FUNDS | $12.1M | 2.06% |
| [John Hancock Disciplined Value Select ETF](https://search.stillhousedata.com/fund/S000093162) | John Hancock Exchange-Traded Fund Trust | $10.7M | 219.11% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/74834L100.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.