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CSS LLC’s Riot Platforms RIOT Stock Holding History

CSS LLC’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
Q1 		$786K Sell
63,600
-40,000
-39% -$614K 0.04% 407
2025
Q4 		$1.31M Sell
103,600
-30,000
-22% -$513K 0.06% 242
2025
Q3 		$2.54M Buy
133,600
+70,000
+110% +$970K 0.11% 145
2025
Q2 		$719K Buy
63,600
+13,600
+27% +$116K 0.03% 434
2025
Q1 		$356K Buy
50,000
+30,000
+150% +$311K 0.02% 584
2024
Q4 		$204K Buy
+20,000
New +$218K 0.01% 773
2022
Q1 		– Sell
-28,000
Closed -$625K – 1295
2021
Q4 		$625K Buy
+28,000
New +$834K 0.02% 579

Other funds holding RIOT

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
SV
Starboard Value New York $4.57B AUM 4.97% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
SA
Situational Awareness San Francisco, California $13.7B AUM 334.5% 1-Year Est. Return
Nomura Holdings
Nomura Holdings Tokyo, Japan $37.7B AUM 34.44% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Jane Street
Jane Street New York $777B AUM 61.18% 1-Year Est. Return

CSS LLC's RIOT Position: Q1 2026 in Review

CSS LLC opened a new position in Riot Platforms (RIOT) in Q1 2026: 9,514 shares worth $118K. The stake represents 0.01% of the portfolio and ranks #790 among its holdings. This is a return to the name: CSS LLC previously reported a position in RIOT as recently as Q3 2025.

CSS LLC first reported a position in RIOT in Q2 2024 and has held it in 5 quarters since. The position peaked at $227K in Q3 2025. 403 funds tracked by Wall St. Rank hold RIOT as of Q1 2026.

  • CSS LLC held 9,514 shares of Riot Platforms worth $118K as of Q1 2026.
  • Riot Platforms was a new CSS LLC position in Q1 2026.
  • Riot Platforms made up 0.01% of CSS LLC's portfolio in Q1 2026, its #790 holding.
  • CSS LLC first reported a position in Riot Platforms in Q2 2024 and has held it in 5 quarters since.
  • CSS LLC's Riot Platforms position peaked at $227K in Q3 2025.
  • 403 funds tracked by Wall St. Rank held Riot Platforms as of Q1 2026.

Based on CSS LLC's 13F filing for Q1 2026, filed 15 May 2026.