Boston Partners Quest Diagnostics Inc Transaction History

Boston Partners

$83.6 Billion
Q2 2025

A detailed history of Boston Partners transactions in Quest Diagnostics Inc stock. As of the latest transaction made, Boston Partners holds 3,035,153 shares of DGX stock, worth $416 Million. This represents 0.5% of its overall portfolio holdings.

Number of Shares

3,035,153

Previous 2,295,746 32.21%

Holding current value

$416 Million

Previous $315 Million 32.21%

% of portfolio

0.5%

Previous 0.41%

14 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q2 2025 Aug 12, 2025	BUY	N/A	4,695 Added 0.15%	3,039,848 $417 Million
Q2 2025 Aug 07, 2025	BUY	N/A	739,407 Added 32.21%	3,035,153 $416 Million
Q1 2025 May 12, 2025	BUY	N/A	2,295,746 New	2,295,746 $315 Million
Q1 2020 May 13, 2020	SELL	$75.14 - $115.68 $149 Million - $230 Million	-1,987,056 Closed	0 $0
Q4 2019 Feb 05, 2020	SELL	$100.29 - $107.99 $160 Million - $173 Million	-1,597,507 Reduced 44.57%	1,987,056 $212 Million
Q3 2019 Nov 20, 2019	SELL	$97.85 - $107.42 $17.6 Million - $19.3 Million	-179,943 Reduced 4.78%	3,584,563 $383 Million
Q3 2019 Nov 08, 2019	BUY	$97.85 - $107.42 $71,234 - $78,201	728 Added 0.02%	3,764,506 $384 Million
Q2 2019 Aug 26, 2019	SELL	$85.18 - $101.94 $24,105 - $28,849	-283 Reduced 0.01%	3,763,778 $383 Million
Q2 2019 Aug 09, 2019	BUY	$85.18 - $101.94 $62.2 Million - $74.4 Million	730,146 Added 24.07%	3,764,061 $383 Million
Q1 2019 May 03, 2019	BUY	$80.68 - $89.92 $241 Million - $269 Million	2,989,242 Added 6691.38%	3,033,915 $273 Million
Q4 2018 Feb 07, 2019	SELL	$79.75 - $108.38 $1.38 Million - $1.88 Million	-17,335 Reduced 27.96%	44,673 $3.72 Million
Q3 2018 Nov 14, 2018	BUY	$105.42 - $114.99 $253,113 - $276,090	2,401 Added 4.03%	62,008 $6.69 Million
Q2 2018 Aug 03, 2018	BUY	$97.35 - $113.14 $389,205 - $452,333	3,998 Added 7.19%	59,607 $6.55 Million
Q1 2018 May 04, 2018	BUY	$96.42 - $107.88 $5.36 Million - $6 Million	55,609 New	55,609 $5.58 Million

Others Institutions Holding DGX

# of Institutions

1,099

Shares Held

107M

Call Options Held

469K

Put Options Held

601K

View Full List

About QUEST DIAGNOSTICS INC

Ticker DGX
Exchange NYSE
Sector Healthcare
Industry Diagnostics & Research
Shares Outstandng 113,887,000
Market Cap $15.6B
Description
Quest Diagnostics Incorporated provides diagnostic testing, information, and services in the United States and internationally. The company develops and delivers diagnostic information services, such as routine testing, non-routine and advanced clinical testing, anatomic pathology testing, and other diagnostic information services. It offers dia...

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