Citadel Advisors
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Citadel Advisors’s Quest Diagnostics DGX Stock Holding History

Citadel Advisors’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 		$5.74M Sell
29,300
-3,100
-10% -$602K ﹤0.01% 4116
2025
Q4 		$5.62M Sell
32,400
-3,900
-11% -$710K ﹤0.01% 4114
2025
Q3 		$6.92M Sell
36,300
-5,300
-13% -$941K ﹤0.01% 3809
2025
Q2 		$7.47M Sell
41,600
-43,500
-51% -$7.56M ﹤0.01% 3449
2025
Q1 		$14.4M Buy
85,100
+61,100
+255% +$10M ﹤0.01% 2409
2024
Q4 		$3.62M Sell
24,000
-10,800
-31% -$1.68M ﹤0.01% 4509
2024
Q3 		$5.4M Buy
34,800
+4,400
+14% +$657K ﹤0.01% 3814
2024
Q2 		$4.16M Sell
30,400
-133,200
-81% -$18.2M ﹤0.01% 4039
2024
Q1 		$21.8M Buy
163,600
+38,200
+30% +$4.96M ﹤0.01% 1983
2023
Q4 		$17.3M Buy
125,400
+73,700
+143% +$9.69M ﹤0.01% 2165
2023
Q3 		$6.3M Sell
51,700
-1,400
-3% -$187K ﹤0.01% 3307
2023
Q2 		$7.46M Sell
53,100
-34,700
-40% -$4.78M ﹤0.01% 3064
2023
Q1 		$12.4M Sell
87,800
-141,300
-62% -$20.2M ﹤0.01% 2520
2022
Q4 		$35.8M Buy
229,100
+175,000
+323% +$25.1M 0.01% 1392
2022
Q3 		$6.64M Sell
54,100
-62,300
-54% -$8.2M ﹤0.01% 3407
2022
Q2 		$15.5M Buy
116,400
+15,600
+15% +$2.13M ﹤0.01% 2127
2022
Q1 		$13.8M Buy
100,800
+33,100
+49% +$4.61M ﹤0.01% 2484
2021
Q4 		$11.7M Sell
67,700
-198,200
-75% -$30.2M ﹤0.01% 2796
2021
Q3 		$38.6M Buy
265,900
+99,500
+60% +$14.6M 0.01% 1330
2021
Q2 		$22M Buy
166,400
+95,600
+135% +$12.5M ﹤0.01% 1969
2021
Q1 		$9.09M Buy
70,800
+46,700
+194% +$5.75M ﹤0.01% 3124
2020
Q4 		$2.87M Sell
24,100
-106,400
-82% -$13M ﹤0.01% 4655
2020
Q3 		$14.9M Buy
130,500
+24,100
+23% +$2.85M ﹤0.01% 1838
2020
Q2 		$12.1M Buy
106,400
+24,500
+30% +$2.6M ﹤0.01% 2003
2020
Q1 		$6.58M Buy
81,900
+40,900
+100% +$4.23M ﹤0.01% 2367
2019
Q4 		$4.38M Buy
41,000
+7,200
+21% +$751K ﹤0.01% 3244
2019
Q3 		$3.62M Buy
33,800
+800
+2% +$82.1K ﹤0.01% 3565
2019
Q2 		$3.36M Sell
33,000
-147,300
-82% -$14.2M ﹤0.01% 3679
2019
Q1 		$16.2M Buy
180,300
+138,900
+336% +$12M 0.01% 1531
2018
Q4 		$3.45M Sell
41,400
-28,800
-41% -$2.7M ﹤0.01% 3330
2018
Q3 		$7.58M Buy
70,200
+28,200
+67% +$3.09M ﹤0.01% 2471
2018
Q2 		$4.62M Sell
42,000
-4,900
-10% -$510K ﹤0.01% 2879
2018
Q1 		$4.7M Sell
46,900
-7,900
-14% -$809K ﹤0.01% 2530
2017
Q4 		$5.4M Buy
54,800
+7,900
+17% +$749K ﹤0.01% 2389
2017
Q3 		$4.39M Buy
46,900
+43,100
+1,134% +$4.58M ﹤0.01% 2445
2017
Q2 		$422K Sell
3,800
-5,500
-59% -$582K ﹤0.01% 5360
2017
Q1 		$913K Sell
9,300
-11,800
-56% -$1.12M ﹤0.01% 4140
2016
Q4 		$1.94M Buy
21,100
+13,700
+185% +$1.18M ﹤0.01% 2981
2016
Q3 		$626K Sell
7,400
-1,100
-13% -$92.4K ﹤0.01% 4506
2016
Q2 		$692K Sell
8,500
-700
-8% -$53.3K ﹤0.01% 4047
2016
Q1 		$657K Sell
9,200
-7,500
-45% -$503K ﹤0.01% 4038
2015
Q4 		$1.19M Sell
16,700
-4,800
-22% -$323K ﹤0.01% 3371
2015
Q3 		$1.32M Sell
21,500
-18,800
-47% -$1.31M ﹤0.01% 3454
2015
Q2 		$2.92M Hold
40,300
– – ﹤0.01% 2616
2015
Q1 		$3.1M Buy
40,300
+3,900
+11% +$279K ﹤0.01% 2548
2014
Q4 		$2.44M Sell
36,400
-46,400
-56% -$2.93M ﹤0.01% 2681
2014
Q3 		$5.02M Buy
82,800
+61,800
+294% +$3.81M 0.01% 1984
2014
Q2 		$1.23M Sell
21,000
-41,700
-67% -$2.44M ﹤0.01% 3231
2014
Q1 		$3.63M Buy
62,700
+9,600
+18% +$515K ﹤0.01% 2046
2013
Q4 		$2.84M Buy
53,100
+30,000
+130% +$1.78M ﹤0.01% 2197
2013
Q3 		$1.43M Buy
23,100
+4,700
+26% +$281K ﹤0.01% 2721
2013
Q2 		$1.12M Buy
+18,400
New +$1.1M ﹤0.01% 3072

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

Citadel Advisors's DGX Position: Q1 2026 in Review

Citadel Advisors reduced its Quest Diagnostics (DGX) stake by 18% in Q1 2026, selling an estimated $15.2M and leaving 347,218 shares worth $68M. The position accounts for 0.01% of the portfolio, ranked #1103.

Citadel Advisors first reported a position in DGX in Q2 2013 and has held it in 49 quarters since. The position peaked at $165M in Q4 2014. 1,063 funds tracked by Wall St. Rank hold DGX as of Q1 2026.

  • Citadel Advisors held 347,218 shares of Quest Diagnostics worth $68M as of Q1 2026.
  • Citadel Advisors sold 78,018 Quest Diagnostics shares in Q1 2026, an estimated $15.2M.
  • Quest Diagnostics made up 0.01% of Citadel Advisors's portfolio in Q1 2026, its #1103 holding.
  • Citadel Advisors first reported a position in Quest Diagnostics in Q2 2013 and has held it in 49 quarters since.
  • Citadel Advisors's Quest Diagnostics position peaked at $165M in Q4 2014.
  • 1,063 funds tracked by Wall St. Rank held Quest Diagnostics as of Q1 2026.

Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.