Simplex Trading
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Simplex Trading’s Quest Diagnostics DGX Stock Holding History

Simplex Trading’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
Q1 		$823K Buy
4,200
+1,200
+40% +$233K ﹤0.01% 2700
2025
Q4 		$521K Sell
3,000
-8,000
-73% -$1.46M ﹤0.01% 3266
2025
Q3 		$2.1M Buy
11,000
+400
+4% +$71K ﹤0.01% 2280
2025
Q2 		$1.9M Buy
10,600
+400
+4% +$69.5K ﹤0.01% 2160
2025
Q1 		$1.73M Buy
10,200
+5,700
+127% +$936K ﹤0.01% 2180
2024
Q4 		$678K Sell
4,500
-3,600
-44% -$560K ﹤0.01% 3234
2024
Q3 		$1.26M Sell
8,100
-21,900
-73% -$3.27M ﹤0.01% 2704
2024
Q2 		$4.11M Sell
30,000
-5,100
-15% -$698K ﹤0.01% 1581
2024
Q1 		$4.67M Buy
35,100
+7,800
+29% +$1.01M ﹤0.01% 1653
2023
Q4 		$3.76M Sell
27,300
-60,100
-69% -$7.9M ﹤0.01% 1800
2023
Q3 		$10.7M Buy
87,400
+47,700
+120% +$6.36M 0.01% 895
2023
Q2 		$5.58M Buy
39,700
+9,000
+29% +$1.24M ﹤0.01% 1243
2023
Q1 		$4.34M Sell
30,700
-10,000
-25% -$1.43M ﹤0.01% 1387
2022
Q4 		$6.37M Buy
40,700
+34,700
+578% +$4.99M 0.01% 1088
2022
Q3 		$736K Buy
6,000
+1,300
+28% +$171K ﹤0.01% 3015
2022
Q2 		$625K Sell
4,700
-20,100
-81% -$2.74M ﹤0.01% 3178
2022
Q1 		$3.39M Sell
24,800
-17,100
-41% -$2.38M ﹤0.01% 1587
2021
Q4 		$7.25M Buy
41,900
+13,200
+46% +$2.01M 0.01% 976
2021
Q3 		$3.81M Buy
28,700
+200
+0.7% +$29.3K ﹤0.01% 1446
2021
Q2 		$3.76M Buy
28,500
+28,388
+25,346% +$3.72M ﹤0.01% 1449
2021
Q1 		$1.44M Sell
112
-34
-23% -$4.19K ﹤0.01% 1996
2020
Q4 		$1.74M Sell
146
-169
-54% -$20.6K ﹤0.01% 1916
2020
Q3 		$3.61M Sell
315
-104
-25% -$12.3K ﹤0.01% 1080
2020
Q2 		$4.77M Sell
419
-157
-27% -$16.7K 0.01% 876
2020
Q1 		$4.63M Buy
576
+374
+185% +$38.7K 0.01% 734
2019
Q4 		$2.16M Sell
202
-73
-27% -$7.61K ﹤0.01% 1410
2019
Q3 		$2.94M Sell
275
-160
-37% -$16.4K 0.01% 1037
2019
Q2 		$4.43M Buy
435
+342
+368% +$32.9K 0.01% 742
2019
Q1 		$836K Sell
93
-111
-54% -$9.62K ﹤0.01% 2151
2018
Q4 		$1.7M Buy
204
+14
+7% +$1.31K 0.01% 1206
2018
Q3 		$2.05M Buy
190
+142
+296% +$15.6K 0.01% 1234
2018
Q2 		$527K Buy
48
+28
+140% +$2.92K ﹤0.01% 2416
2018
Q1 		$2K Sell
20
-62
-76% -$6.35K ﹤0.01% 5226
2017
Q4 		$24K Sell
82
-26
-24% -$2.46K ﹤0.01% 3123
2017
Q3 		$6K Buy
108
+74
+218% +$7.86K ﹤0.01% 4215
2017
Q2 		$11K Sell
34
-366
-92% -$38.7K ﹤0.01% 3875
2017
Q1 		$48K Buy
400
+356
+809% +$33.9K ﹤0.01% 2410
2016
Q4 		$21K Sell
44
-92
-68% -$7.93K ﹤0.01% 2991
2016
Q3 		$28K Buy
136
+51
+60% +$4.28K ﹤0.01% 2626
2016
Q2 		$32K Buy
85
+1
+1% +$76 ﹤0.01% 2456
2016
Q1 		$55K Buy
84
+3
+4% +$201 ﹤0.01% 1880
2015
Q4 		$27K Buy
81
+49
+153% +$3.29K ﹤0.01% 2439
2015
Q3 		$6K Sell
32
-39
-55% -$2.73K ﹤0.01% 3828
2015
Q2 		$24K Buy
71
+47
+196% +$3.47K ﹤0.01% 2297
2015
Q1 		$29K Buy
24
+11
+85% +$788 ﹤0.01% 1994
2014
Q4 		$11K Buy
+13
New +$820 ﹤0.01% 2517

Other funds holding DGX

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Boston Partners
Boston Partners Boston, Massachusetts $95.5B AUM 28.4% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 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
EIG
EdgePoint Investment Group Toronto, Ontario, Canada $12.5B AUM 31.7% 1-Year Est. Return

Simplex Trading's DGX Position: Q1 2026 in Review

Simplex Trading reduced its Quest Diagnostics (DGX) stake by 88% in Q1 2026, selling an estimated $847K and leaving 596 shares worth $117K. The position accounts for ﹤0.01% of the portfolio, ranked #4905.

Simplex Trading first reported a position in DGX in Q3 2015 and has held it in 23 quarters since. The position peaked at $1.88M in Q1 2024. 1,063 funds tracked by Wall St. Rank hold DGX as of Q1 2026.

  • Simplex Trading held 596 shares of Quest Diagnostics worth $117K as of Q1 2026.
  • Simplex Trading sold 4,362 Quest Diagnostics shares in Q1 2026, an estimated $847K.
  • Quest Diagnostics made up ﹤0.01% of Simplex Trading's portfolio in Q1 2026, its #4905 holding.
  • Simplex Trading first reported a position in Quest Diagnostics in Q3 2015 and has held it in 23 quarters since.
  • Simplex Trading's Quest Diagnostics position peaked at $1.88M in Q1 2024.
  • 1,063 funds tracked by Wall St. Rank held Quest Diagnostics as of Q1 2026.

Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.