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Castleark Management’s Riot Platforms RIOT Stock Holding History

Castleark Management’s Portfolio RIOT Stock Details RIOT Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$715K Buy
+26,120
New +$589K 0.02% 255
2025
Q4 		– Sell
-193,630
Closed -$3.68M – 330
2025
Q3 		$3.68M Buy
+193,630
New +$2.68M 0.1% 166

Other funds holding RIOT

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
SA
Situational Awareness San Francisco, California $20.2B AUM 612.59% 1-Year Est. Return
Jane Street
Jane Street New York $1.21T AUM 78.12% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
SV
Starboard Value New York $4.52B AUM 19.34% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

Castleark Management's RIOT Position: Q2 2026 in Review

Castleark Management opened a new position in Riot Platforms (RIOT) in Q2 2026: 26,120 shares worth $715K. The stake represents 0.02% of the portfolio and ranks #255 among its holdings. This is a return to the name: Castleark Management previously reported a position in RIOT as recently as Q3 2025.

Castleark Management first reported a position in RIOT in Q3 2025 and has held it in 2 quarters since. The position peaked at $3.68M in Q3 2025. 448 funds tracked by Wall St. Rank hold RIOT as of Q2 2026.

  • Castleark Management held 26,120 shares of Riot Platforms worth $715K as of Q2 2026.
  • Riot Platforms was a new Castleark Management position in Q2 2026.
  • Riot Platforms made up 0.02% of Castleark Management's portfolio in Q2 2026, its #255 holding.
  • Castleark Management first reported a position in Riot Platforms in Q3 2025 and has held it in 2 quarters since.
  • Castleark Management's Riot Platforms position peaked at $3.68M in Q3 2025.
  • 448 funds tracked by Wall St. Rank held Riot Platforms as of Q2 2026.

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