XTX Topco’s Quest Diagnostics DGX Stock Holding History

XTX Topco’s Portfolio DGX Stock Details DGX Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$1.61M	Buy	7,611 +1,865	+32%	+$366K	0.02%	1328
2026 Q1	$1.13M	Sell	5,746 -5,984	-51%	-$1.16M	0.02%	1306
2025 Q4	$2.04M	Buy	11,730 +4,001	+52%	+$729K	0.05%	555
2025 Q3	$1.47M	Buy	+7,729	New	+$1.37M	0.08%	340
2025 Q2	–	Sell	-7,779	Closed	-$1.32M	–	2528
2025 Q1	$1.32M	Buy	+7,779	New	+$1.28M	0.07%	401
2024 Q3	–	Sell	-6,791	Closed	-$930K	–	2190
2024 Q2	$930K	Buy	6,791 +3,811	+128%	+$522K	0.08%	388
2024 Q1	$397K	Buy	+2,980	New	+$387K	0.05%	626
2023 Q3	–	Sell	-5,460	Closed	-$767K	–	1653
2023 Q2	$767K	Buy	+5,460	New	+$753K	0.14%	171
2023 Q1	–	Sell	-1,629	Closed	-$255K	–	1360
2022 Q4	$255K	Buy	+1,629	New	+$234K	0.05%	697
2022 Q1	–	Sell	-1,280	Closed	-$221K	–	728
2021 Q4	$221K	Buy	+1,280	New	+$195K	0.13%	326

Other funds holding DGX

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return

Boston Partners Boston, Massachusetts $113B AUM 38.87% 1-Year Est. Return

JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

EIG

EdgePoint Investment Group Toronto, Ontario, Canada $13.2B AUM 32.43% 1-Year Est. Return

XTX Topco's DGX Position: Q2 2026 in Review

XTX Topco increased its Quest Diagnostics (DGX) stake by 32% in Q2 2026, buying an estimated $366K and bringing the position to 7,611 shares worth $1.61M. The position accounts for 0.02% of the portfolio, ranked #1328.

XTX Topco first reported a position in DGX in Q4 2021 and has held it in 10 quarters since. The position peaked at $2.04M in Q4 2025. 1,100 funds tracked by Wall St. Rank hold DGX as of Q2 2026.

XTX Topco held 7,611 shares of Quest Diagnostics worth $1.61M as of Q2 2026.
XTX Topco bought 1,865 Quest Diagnostics shares in Q2 2026, an estimated $366K.
Quest Diagnostics made up 0.02% of XTX Topco's portfolio in Q2 2026, its #1328 holding.
XTX Topco first reported a position in Quest Diagnostics in Q4 2021 and has held it in 10 quarters since.
XTX Topco's Quest Diagnostics position peaked at $2.04M in Q4 2025.
1,100 funds tracked by Wall St. Rank held Quest Diagnostics as of Q2 2026.

Based on XTX Topco's 13F filing for Q2 2026, filed 14 Aug 2026.