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Castleark Management’s IonQ IONQ Stock Holding History

Castleark Management’s Portfolio IONQ Stock Details IONQ Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$4.6M Buy
+86,310
New +$4.37M 0.12% 168
2026
Q1 		– Sell
-48,320
Closed -$2.17M – 321
2025
Q4 		$2.17M Sell
48,320
-66,040
-58% -$3.7M 0.06% 198
2025
Q3 		$7.03M Buy
114,360
+75,420
+194% +$3.55M 0.2% 115
2025
Q2 		$1.67M Buy
+38,940
New +$1.3M 0.05% 189

Other funds holding IONQ

Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
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
UBS Group
UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Norges Bank
Norges Bank Oslo, Norway $1T AUM
MG
Marex Group London $23.6B AUM 57.16% 1-Year Est. Return

Castleark Management's IONQ Position: Q2 2026 in Review

Castleark Management opened a new position in IonQ (IONQ) in Q2 2026: 86,310 shares worth $4.6M. The stake represents 0.12% of the portfolio and ranks #168 among its holdings. This is a return to the name: Castleark Management previously reported a position in IONQ as recently as Q4 2025.

Castleark Management first reported a position in IONQ in Q2 2025 and has held it in 4 quarters since. The position peaked at $7.03M in Q3 2025. 786 funds tracked by Wall St. Rank hold IONQ as of Q2 2026.

  • Castleark Management held 86,310 shares of IonQ worth $4.6M as of Q2 2026.
  • IonQ was a new Castleark Management position in Q2 2026.
  • IonQ made up 0.12% of Castleark Management's portfolio in Q2 2026, its #168 holding.
  • Castleark Management first reported a position in IonQ in Q2 2025 and has held it in 4 quarters since.
  • Castleark Management's IonQ position peaked at $7.03M in Q3 2025.
  • 786 funds tracked by Wall St. Rank held IonQ as of Q2 2026.

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