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 		– Sell
-7,400
Closed -$1.28M – 9285
2025
Q4 		$1.28M Sell
7,400
-16,300
-69% -$2.97M ﹤0.01% 2383
2025
Q3 		$4.52M Sell
23,700
-25,400
-52% -$4.51M ﹤0.01% 1561
2025
Q2 		$8.82M Buy
49,100
+4,600
+10% +$799K 0.01% 965
2025
Q1 		$7.53M Buy
44,500
+39,800
+847% +$6.54M ﹤0.01% 1050
2024
Q4 		$709K Sell
4,700
-3,600
-43% -$560K ﹤0.01% 3195
2024
Q3 		$1.29M Sell
8,300
-15,800
-66% -$2.36M ﹤0.01% 2683
2024
Q2 		$3.3M Sell
24,100
-37,100
-61% -$5.08M ﹤0.01% 1750
2024
Q1 		$8.15M Buy
61,200
+16,800
+38% +$2.18M ﹤0.01% 1257
2023
Q4 		$6.12M Buy
44,400
+36,800
+484% +$4.84M ﹤0.01% 1405
2023
Q3 		$926K Buy
7,600
+3,300
+77% +$440K ﹤0.01% 2744
2023
Q2 		$604K Sell
4,300
-5,600
-57% -$772K ﹤0.01% 3112
2023
Q1 		$1.4M Buy
9,900
+7,200
+267% +$1.03M ﹤0.01% 2266
2022
Q4 		$422K Buy
2,700
+800
+42% +$115K ﹤0.01% 3347
2022
Q3 		$233K Sell
1,900
-47,400
-96% -$6.24M ﹤0.01% 4412
2022
Q2 		$6.55M Sell
49,300
-25,700
-34% -$3.5M 0.01% 1002
2022
Q1 		$10.3M Buy
75,000
+63,000
+525% +$8.78M 0.01% 824
2021
Q4 		$2.08M Sell
12,000
-14,400
-55% -$2.19M ﹤0.01% 2010
2021
Q3 		$3.51M Hold
26,400
– – ﹤0.01% 1522
2021
Q2 		$3.48M Buy
26,400
+26,156
+10,720% +$3.42M ﹤0.01% 1520
2021
Q1 		$3.13M Buy
244
+52
+27% +$6.41K 0.01% 1197
2020
Q4 		$2.29M Sell
192
-136
-41% -$16.6K ﹤0.01% 1643
2020
Q3 		$3.75M Buy
328
+8
+3% +$945 0.01% 1059
2020
Q2 		$3.65M Sell
320
-158
-33% -$16.8K 0.01% 1060
2020
Q1 		$3.84M Buy
478
+231
+94% +$23.9K 0.01% 839
2019
Q4 		$2.64M Sell
247
-73
-23% -$7.61K 0.01% 1250
2019
Q3 		$3.42M Buy
320
+110
+52% +$11.3K 0.01% 940
2019
Q2 		$2.14M Sell
210
-243
-54% -$23.4K 0.01% 1266
2019
Q1 		$4.07M Buy
453
+414
+1,062% +$35.9K 0.01% 822
2018
Q4 		$324K Sell
39
-126
-76% -$11.8K ﹤0.01% 2641
2018
Q3 		$1.78M Buy
165
+102
+162% +$11.2K 0.01% 1341
2018
Q2 		$692K Hold
63
– – ﹤0.01% 2142
2018
Q1 		$60K Hold
63
– – ﹤0.01% 2255
2017
Q4 		$14K Buy
63
+18
+40% +$1.71K ﹤0.01% 3624
2017
Q3 		$34K Buy
+45
New +$4.78K ﹤0.01% 2647
2017
Q2 		– Sell
-17
Closed -$5K – 6225
2017
Q1 		$5K Buy
+17
New +$1.62K ﹤0.01% 4558
2016
Q4 		– Sell
-68
Closed -$15K – 5951
2016
Q3 		$15K Buy
+68
New +$5.71K ﹤0.01% 3242
2016
Q2 		– Sell
-21
Closed -$1K – 5907
2016
Q1 		$1K Buy
21
+3
+17% +$201 ﹤0.01% 5054
2015
Q4 		$3K Sell
18
-11
-38% -$740 ﹤0.01% 4212
2015
Q3 		$20K Buy
29
+9
+45% +$629 ﹤0.01% 2787
2015
Q2 		$14K Buy
20
+8
+67% +$591 ﹤0.01% 2758
2015
Q1 		$5K Sell
12
-62
-84% -$4.44K ﹤0.01% 3483
2014
Q4 		$12K Buy
+74
New +$4.67K ﹤0.01% 2442

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.