Group One Trading
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Group One Trading’s Quest Diagnostics DGX Stock Holding History

Group One 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 		$5.06M Sell
25,800
-3,000
-10% -$583K 0.01% 1290
2025
Q4 		$5M Buy
28,800
+28,500
+9,500% +$5.19M 0.01% 1490
2025
Q3 		$57.2K Sell
300
-20,400
-99% -$3.62M ﹤0.01% 5840
2025
Q2 		$3.72M Buy
20,700
+9,400
+83% +$1.63M 0.01% 1568
2025
Q1 		$1.91M Buy
+11,300
New +$1.86M 0.01% 1850
2024
Q4 		– Sell
-1,000
Closed -$155K – 7411
2024
Q3 		$155K Sell
1,000
-400
-29% -$59.7K ﹤0.01% 3844
2024
Q2 		$192K Buy
1,400
+1,100
+367% +$151K ﹤0.01% 3428
2024
Q1 		$39.9K Sell
300
-11,500
-97% -$1.49M ﹤0.01% 4897
2023
Q4 		$1.63M Buy
11,800
+300
+3% +$39.4K ﹤0.01% 2043
2023
Q3 		$1.4M Buy
11,500
+500
+5% +$66.6K ﹤0.01% 1945
2023
Q2 		$1.55M Sell
11,000
-900
-8% -$124K 0.01% 1958
2023
Q1 		$1.68M Sell
11,900
-800
-6% -$114K 0.01% 1681
2022
Q4 		$1.99M Buy
12,700
+600
+5% +$86.2K ﹤0.01% 1825
2022
Q3 		$1.49M Buy
12,100
+200
+2% +$26.3K ﹤0.01% 2167
2022
Q2 		$1.58M Buy
11,900
+7,500
+170% +$1.02M ﹤0.01% 2275
2022
Q1 		$602K Sell
4,400
-35,400
-89% -$4.93M ﹤0.01% 3617
2021
Q4 		$6.89M Sell
39,800
-65,200
-62% -$9.92M 0.01% 1416
2021
Q3 		$15.3M Sell
105,000
-600
-0.6% -$87.8K 0.02% 774
2021
Q2 		$13.9M Buy
105,600
+66,300
+169% +$8.68M 0.02% 843
2021
Q1 		$5.04M Sell
39,300
-500
-1% -$61.6K 0.01% 1503
2020
Q4 		$4.74M Sell
39,800
-85,300
-68% -$10.4M 0.01% 1318
2020
Q3 		$14.3M Buy
125,100
+72,100
+136% +$8.52M 0.05% 381
2020
Q2 		$6.04M Buy
53,000
+6,700
+14% +$711K 0.03% 698
2020
Q1 		$3.72M Buy
+46,300
New +$4.79M 0.03% 686
2019
Q1 		– Sell
-16,800
Closed -$1.4M – 4909
2018
Q4 		$1.4M Buy
16,800
+1,300
+8% +$122K 0.01% 1266
2018
Q3 		$1.67M Hold
15,500
– – 0.01% 1295
2018
Q2 		$1.7M Sell
15,500
-3,500
-18% -$365K 0.01% 1263
2018
Q1 		$1.91M Buy
19,000
+3,300
+21% +$338K 0.02% 1040
2017
Q4 		$1.55M Buy
15,700
+13,500
+614% +$1.28M 0.01% 1360
2017
Q3 		$206K Buy
2,200
+1,200
+120% +$127K ﹤0.01% 2742
2017
Q2 		$111K Buy
+1,000
New +$106K ﹤0.01% 3041
2017
Q1 		– Sell
-5,000
Closed -$460K – 4691
2016
Q4 		$460K Sell
5,000
-4,800
-49% -$414K ﹤0.01% 1837
2016
Q3 		$829K Buy
9,800
+3,600
+58% +$302K 0.01% 1416
2016
Q2 		$505K Sell
6,200
-3,400
-35% -$259K 0.01% 1728
2016
Q1 		$686K Sell
9,600
-8,200
-46% -$550K 0.01% 1464
2015
Q4 		$1.27M Buy
17,800
+6,800
+62% +$457K 0.02% 1149
2015
Q3 		$676K Buy
11,000
+10,900
+10,900% +$762K 0.01% 1542
2015
Q2 		$7K Hold
100
– – ﹤0.01% 4396
2015
Q1 		$8K Buy
+100
New +$7.16K ﹤0.01% 4217
2014
Q4 		– Sell
-1,900
Closed -$115K – 4953
2014
Q3 		$115K Buy
1,900
+100
+6% +$6.16K ﹤0.01% 2862
2014
Q2 		$106K Sell
1,800
-300
-14% -$17.6K ﹤0.01% 2934
2014
Q1 		$122K Buy
+2,100
New +$113K ﹤0.01% 2888

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

Group One Trading's DGX Position: Q1 2026 in Review

Group One Trading reduced its Quest Diagnostics (DGX) stake by 76% in Q1 2026, selling an estimated $584K and leaving 961 shares worth $188K. The position accounts for ﹤0.01% of the portfolio, ranked #4155.

Group One Trading first reported a position in DGX in Q1 2014 and has held it in 23 quarters since. The position peaked at $2.54M in Q2 2021. 1,064 funds tracked by Wall St. Rank hold DGX as of Q1 2026.

  • Group One Trading held 961 shares of Quest Diagnostics worth $188K as of Q1 2026.
  • Group One Trading sold 3,005 Quest Diagnostics shares in Q1 2026, an estimated $584K.
  • Quest Diagnostics made up ﹤0.01% of Group One Trading's portfolio in Q1 2026, its #4155 holding.
  • Group One Trading first reported a position in Quest Diagnostics in Q1 2014 and has held it in 23 quarters since.
  • Group One Trading's Quest Diagnostics position peaked at $2.54M in Q2 2021.
  • 1,064 funds tracked by Wall St. Rank held Quest Diagnostics as of Q1 2026.

Based on Group One Trading's 13F filing for Q1 2026, filed 13 May 2026.