PEAK6
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PEAK6’s Quest Diagnostics DGX Stock Holding History

PEAK6’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
Q2 		$975K Sell
4,600
-79,700
-95% -$15.6M ﹤0.01% 1709
2026
Q1 		$16.5M Buy
+84,300
New +$16.4M 0.04% 409
2025
Q3 		– Sell
-5,000
Closed -$898K – 3045
2025
Q2 		$898K Sell
5,000
-100
-2% -$17.4K ﹤0.01% 1862
2025
Q1 		$863K Buy
5,100
+700
+16% +$115K ﹤0.01% 1833
2024
Q4 		$664K Buy
+4,400
New +$684K ﹤0.01% 2017

Other funds holding DGX

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
State Street
State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return
Boston Partners
Boston Partners Boston, Massachusetts $113B AUM 38.87% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
EIG
EdgePoint Investment Group Toronto, Ontario, Canada $13.2B AUM 32.43% 1-Year Est. Return

PEAK6's DGX Position: Q2 2026 in Review

PEAK6 opened a new position in Quest Diagnostics (DGX) in Q2 2026: 520 shares worth $110K. The stake represents ﹤0.01% of the portfolio and ranks #2397 among its holdings. This is a return to the name: PEAK6 previously reported a position in DGX as recently as Q1 2025.

PEAK6 first reported a position in DGX in Q1 2025 and has held it in 2 quarters since. The position peaked at $3.27M in Q1 2025. 1,111 funds tracked by Wall St. Rank hold DGX as of Q2 2026.

  • PEAK6 held 520 shares of Quest Diagnostics worth $110K as of Q2 2026.
  • Quest Diagnostics was a new PEAK6 position in Q2 2026.
  • Quest Diagnostics made up ﹤0.01% of PEAK6's portfolio in Q2 2026, its #2397 holding.
  • PEAK6 first reported a position in Quest Diagnostics in Q1 2025 and has held it in 2 quarters since.
  • PEAK6's Quest Diagnostics position peaked at $3.27M in Q1 2025.
  • 1,111 funds tracked by Wall St. Rank held Quest Diagnostics as of Q2 2026.

Based on PEAK6's 13F filing for Q2 2026, filed 13 Aug 2026.