DGXQuest Diagnostics

$255.60+47% 1Y
Latest close: a new 52-week highNov 6, 2026what changed →

Who owns it

Who owns DGX

1,084 institutions reported holding DGX for Q2 2026, together 93% of the company, more than the 1,043 a quarter earlier.

1,084

Institutions reporting a position · as of Q2 2026 · up from 1,043 the quarter before

Shares held by institutions
104.3M

Shares held by institutions · 93% of the company · long US equity positions only, as reported on Form 13F

Held by the 300 largest ETFs
17.2%

Held by the 300 largest ETFs · in 48 funds · from the funds' own N-PORT filings

Top 5 holders
35%

Top 5 holders · of the whole company, between five filers

Details›
Reporting quarter2026-06-30
Q2 2026
Quarters on record
53
New positions
119
Positions exited
76
Added to
373
Reduced
300
Top 10 holdersof the company
47%
Reported valueat Jun 30, 2026 prices, not today's
$22.1B
Institutional ownership by quarter, Q2 2013 to Q2 2026
QuarterFilersSharesReported value
Q2 20261,084104.3M$22.1B
Q1 20261,043102.1M$20.0B
Q4 20251,031106.1M$18.4B
Q3 2025986104.0M$19.8B
Q2 2025970106.5M$19.1B
Q1 2025950102.4M$17.3B
Q4 202488299.0M$14.9B
Q3 202483697.9M$15.1B
Q2 202482997.2M$13.3B
Q1 202480699.0M$13.2B
Q4 202381397.5M$13.4B
Q3 202378198.4M$12.0B
Q2 202380599.5M$14.0B
Q1 202382299.8M$14.1B
Q4 202287098.9M$15.5B
Q3 2022799102.5M$12.6B
Largest reported holders, Q2 2026
HolderShares% of companyValue
Vanguard Group14.6M13%$3.08B
BlackRock Inc.9.3M8.3%$1.97B
State Street5.5M4.9%$1.17B
Price T Rowe Associates5.4M4.9%$1.15B
Robeco Investment Management, Inc.4.7M4.2%$1.00B
Jpmorgan Chase & Co.3.5M3.1%$749M
Geode Capital Management3.1M2.8%$663M
Morgan Stanley2.5M2.2%$522M
EdgePoint Investment Group Inc.2.2M2.0%$476M
Dimensional Fund Advisors2.0M1.8%$421M

SEC Form 13F data sets (DERA bulk files). 13F is quarterly, filed up to 45 days late, and covers long US equity positions only, no shorts, no derivatives, nothing held below the reporting threshold.

opening the register…
Quest Diagnostics (DGX) Institutional Ownership, Insider Trading and ETFs · Ryufin