Twin Tree Management
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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
2020
Q1 		– Sell
-9,700
Closed -$1.04M – 1404
2019
Q4 		$1.04M Buy
+9,700
New +$1.01M ﹤0.01% 856
2016
Q2 		– Sell
-3,500
Closed -$250K – 1237
2016
Q1 		$250K Sell
3,500
-7,700
-69% -$516K ﹤0.01% 961
2015
Q4 		$797K Buy
+11,200
New +$753K 0.02% 712
2015
Q1 		– Sell
-3,800
Closed -$255K – 1179
2014
Q4 		$255K Buy
+3,800
New +$240K 0.01% 877

Other funds holding DGX

Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
Boston Partners
Boston Partners Boston, Massachusetts $95.5B AUM 28.4% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Victory Capital Management
Victory Capital Management San Antonio, Texas $156B AUM 27.51% 1-Year Est. Return
Dimensional Fund Advisors
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.