Twin Tree Management’s Quest Diagnostics DGX Stock Holding History

Twin Tree Management’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
2025 Q4	–	Sell	-6,400	Closed	-$1.22M	–	1484
2025 Q3	$1.22M	Buy	+6,400	New	+$1.14M	0.01%	1150
2021 Q4	–	Sell	-5,000	Closed	-$727K	–	1628
2021 Q3	$727K	Buy	+5,000	New	+$732K	﹤0.01%	1239
2017 Q1	–	Sell	-13,400	Closed	-$1.23M	–	1061
2016 Q4	$1.23M	Buy	+13,400	New	+$1.15M	0.01%	736
2016 Q3	–	Sell	-7,100	Closed	-$578K	–	1178
2016 Q2	$578K	Buy	+7,100	New	+$541K	0.01%	800
2015 Q4	–	Sell	-9,000	Closed	-$553K	–	1420
2015 Q3	$553K	Buy	9,000 +6,400	+246%	+$447K	0.01%	743
2015 Q2	$189K	Buy	+2,600	New	+$192K	﹤0.01%	1077

Other funds holding DGX

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return

Boston Partners Boston, Massachusetts $95.5B AUM 28.4% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

Victory Capital Management San Antonio, Texas $156B AUM 27.51% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

Twin Tree Management's DGX Position: Q4 2025 in Review

Twin Tree Management sold out of Quest Diagnostics (DGX) in Q4 2025, closing a stake of 2,850 shares — an estimated $543K sold.

Twin Tree Management first reported a position in DGX in Q1 2015 and held it in 21 quarters. The position peaked at $29.4M in Q4 2021. 1,048 funds tracked by Wall St. Rank hold DGX as of Q4 2025.

Twin Tree Management reported no remaining Quest Diagnostics position as of Q4 2025 after selling out during the quarter.
Twin Tree Management sold 2,850 Quest Diagnostics shares in Q4 2025, an estimated $543K.
Twin Tree Management first reported a position in Quest Diagnostics in Q1 2015 and held it in 21 quarters.
Twin Tree Management's Quest Diagnostics position peaked at $29.4M in Q4 2021.
1,048 funds tracked by Wall St. Rank held Quest Diagnostics as of Q4 2025.

Based on Twin Tree Management's 13F filing for Q4 2025, filed 11 Feb 2026.