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Castleark Management’s Quest Diagnostics DGX Stock Holding History

Castleark Management’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 		$6.67M Buy
+31,480
New +$6.18M 0.18% 135

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 $3.37T AUM 44.26% 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

Castleark Management's DGX Position: Q2 2026 in Review

Castleark Management opened a new position in Quest Diagnostics (DGX) in Q2 2026: 31,480 shares worth $6.67M. The stake represents 0.18% of the portfolio and ranks #135 among its holdings.

1,100 funds tracked by Wall St. Rank hold DGX as of Q2 2026.

  • Castleark Management held 31,480 shares of Quest Diagnostics worth $6.67M as of Q2 2026.
  • Quest Diagnostics was a new Castleark Management position in Q2 2026.
  • Quest Diagnostics made up 0.18% of Castleark Management's portfolio in Q2 2026, its #135 holding.
  • 1,100 funds tracked by Wall St. Rank held Quest Diagnostics as of Q2 2026.

Based on Castleark Management's 13F filing for Q2 2026, filed 14 Aug 2026.