DGX

Quest Diagnostics Inc
Health CareUSCUSIP 74834L100◍ Confluence graph
Tracked 13F Holders
970
-236 QoQ
13F Value (tracked)
$19.3B
Insider Net · 180d
-$9.5M
0↑ 4↓
Recent Filings
15
Smart-money sentimentMixed
BearishBullish
13F funds (latest Q)30 adding · 21 trimming
Insider net (180d)-$9.5M

Who owns DGX?

970 tracked 13F filers

970 tracked 13F filers disclose a position in DGX as of the latest SEC 13F filings, a combined $19.3B in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.

All quarters use one ordinary-share-equivalent series. Historical ADS are converted at 2 ADS = 1 ordinary share. Expand a row for the exact calculation; the residual is not classified as a trade.
1 source-reported value row is withheld because the reported units do not agree with same-security peers. Share counts remain visible and unchanged.
#FundPosition valueSharesLast moveAs ofHistory
1BlackRock, Inc.
$1.8B
9.2M
−3.0%
Reduced · −287K sh
Q1 2026
2VANGUARD CAPITAL MANAGEMENT LLC
$1.4B
7.1M
First observed position
No prior filed position
Q1 2026
3PRICE T ROWE ASSOCIATES INC /MD/
$1.2B
6.3M
~0%
Added · +830 sh
Q1 2026
4VANGUARD PORTFOLIO MANAGEMENT LLC
$1.2B
6.1M
First observed position
No prior filed position
Q1 2026
5STATE STREET CORP
$1.2B
5.5M
+2.5%
Added · +136K sh
Q2 2026
6Boston Partners
$786.7M
4.0M
+2.5%
Added · +99K sh
Q1 2026
7JPMORGAN CHASE & CO
$758.4M
3.8M
−7.2%
Reduced · −299K sh
Q1 2026
8GEODE CAPITAL MANAGEMENT, LLC
$662.6M
3.1M
+1.7%
Added · +52K sh
Q2 2026
9MORGAN STANLEY
$486.0M
2.5M
−7.9%
Reduced · −214K sh
Q1 2026
10EdgePoint Investment Group Inc.
$439.8M
2.2M
+35%
Added · +583K sh
Q1 2026
11DIMENSIONAL FUND ADVISORS LP
$382.1M
1.9M
+0.9%
Added · +18K sh
Q1 2026
12Grantham, Mayo, Van Otterloo & Co. LLC
$400.2M
1.9M
+0.3%
Added · +5K sh
Q2 2026
13VICTORY CAPITAL MANAGEMENT INC
$361.8M
1.8M
−13%
Reduced · −280K sh
Q1 2026
14WELLS FARGO & COMPANY/MN
$345.5M
1.8M
−0.3%
Reduced · −6K sh
Q1 2026
15BANK OF AMERICA CORP /DE/
$343.5M
1.8M
+8.0%
Added · +130K sh
Q1 2026
16GOLDMAN SACHS GROUP INC
$264.3M
1.3M
−21%
Reduced · −360K sh
Q1 2026
17NORGES BANK
$229.5M
1.3M
−0.2%
Reduced · −3K sh
Q4 2025
18NORTHERN TRUST CORP
$218.4M
1.1M
+3.3%
Added · +36K sh
Q1 2026
19FMR LLC
$184.7M
942K
−22%
Reduced · −260K sh
Q1 2026
20AMERICAN CENTURY COMPANIES INC
$170.0M
867K
−0.4%
Reduced · −3K sh
Q1 2026
21UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME
$165.9M
847K
~0%
Reduced · −332 sh
Q1 2026
22AMERIPRISE FINANCIAL INC
$158.3M
807K
−0.7%
Reduced · −6K sh
Q1 2026
23M&G Plc
$157.8M
805K
−15%
Reduced · −140K sh
Q1 2026
24CHARLES SCHWAB INVESTMENT MANAGEMENT INC
$149.1M
761K
+1.3%
Added · +10K sh
Q1 2026
25Legal & General Group Plc
$144.4M
737K
−0.8%
Reduced · −6K sh
Q1 2026

Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.

Is DGX being bought or sold by institutions?

Last quarter, 0 funds opened a new position in DGX and 30 added to an existing one, while 21 reduced and 0 exited entirely — based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).

Opened (NEW)
0
funds
Added
30
funds
Reduced
21
funds
Exited
0
funds

Funds that own DGX also own

CompanyCo-held byCombined value
MICROSOFT CORPMSFT612 funds$317.1B
APPLE INCAAPL605 funds$350.2B
NVIDIA CORPNVDA604 funds$443.0B
AMAZON.COM INCAMZN599 funds$230.1B
ALPHABET INC-CL AGOOGL598 funds$198.1B
JPMORGAN CHASE & COJPM592 funds$78.0B
ELI LILLY & COLLY589 funds$90.2B
META PLATFORMS INC-CLASS AMETA583 funds$130.1B
BROADCOM INCAVGO575 funds$179.9B
JOHNSON & JOHNSONJNJ575 funds$58.0B
ALPHABET INC-CL CGOOG574 funds$150.2B
HOME DEPOT INCHD567 funds$34.6B

Ranked by how many of DGX's institutional holders also hold each name, a cross-fund conviction signal.

Insider activity (Form 4)

Full insider page →
Buys · 180d
$0
0 insiders
Sells · 180d
$9.5M
4 insiders
Net
-$9.5M
6 P/S txns
Signal
Net Selling
open-market
DateInsiderRoleActionSharesValue
Aug 28, 2026PREVOZNIK MICHAEL ESVP & General CounselSell (S)430$105K
Aug 28, 2026PREVOZNIK MICHAEL ESVP & General CounselSell (S)6K$1.5M
Aug 28, 2026PREVOZNIK MICHAEL ESVP & General CounselSell (S)16K$3.9M
Jul 28, 2026DELANEY MARK ESVP & Chief Commercial OfficerSell (S)2K$376K
Jun 4, 2026KUPPUSAMY KARTHIKSVP, Clinical SolutionsSell (S)8K$1.6M
Jun 1, 2026Davis J. E.CEO and President, DirectorSell (S)10K$1.9M
Mar 5, 2026Plewman PatrickSVP for Diagnostic ServicesSell (S)3K$589K
Mar 5, 2026PREVOZNIK MICHAEL ESVP & General CounselSell (S)4K$800K
Mar 5, 2026Doherty Catherine T.EVP, Regional BusinessesSell (S)6K$1.1M
Mar 4, 2026KUPPUSAMY KARTHIKSVP, Clinical SolutionsSell (S)3K$538K
Mar 3, 2026Plewman PatrickSVP for Diagnostic ServicesSell (S)410$85K
Mar 3, 2026PREVOZNIK MICHAEL ESVP & General CounselSell (S)526$109K

Institutional ownership over time

678 funds+77 since Q3 2024
0457914Q3 2024Q1 2025Q3 2025Q1 2026Q2 2026
funds holding aggregate valuelatest $4.1B · 1 values withheld

Recent filings

15 shown

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Connected entities for DGX

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Ask your agent what changed in DGX

This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.

Copy-paste
curl -H "Authorization: Bearer YOUR_API_KEY" \
  "https://arkolith.com/api/v1/stocks/DGX/capital-change-brief"
Ask your agent
Use Arkolith's capital_change_brief for DGX.
Tell me what changed, whether insider activity
corroborates it, and cite the SEC evidence.

13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for DGX. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.