Optiver Holding
RIOX

Optiver Holding’s Defiance Daily Target 2X Long RIOT ETF RIOX Stock Holding History

Optiver Holding’s Portfolio RIOX Stock Details RIOX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$156K Buy
+2,642
New +$119K ﹤0.01% 950
2026
Q1 		– Sell
-5,892
Closed -$125K – 2801
2025
Q4 		$125K Buy
5,892
+4,684
+388% +$349K ﹤0.01% 787
2025
Q3 		$121K Sell
1,208
-18,622
-94% -$1.13M ﹤0.01% 671
2025
Q2 		$882K Buy
19,830
+19,779
+38,782% +$551K ﹤0.01% 322
2025
Q1 		$1.11K Buy
+51
New +$2.81K ﹤0.01% 1268

Other funds holding RIOX

Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return
Jane Street
Jane Street New York $1.21T AUM 78.12% 1-Year Est. Return
GS
GTS Securities Miami, Florida $4.75B AUM 41.97% 1-Year Est. Return
IMC Chicago
IMC Chicago Chicago, Illinois $419B AUM 72.04% 1-Year Est. Return
Susquehanna International Group
Susquehanna International Group Bala Cynwyd, Pennsylvania $1.28T AUM 58.89% 1-Year Est. Return
Group One Trading
Group One Trading Chicago, Illinois $71.1B AUM 128.96% 1-Year Est. Return
TRCT
Tower Research Capital (TRC) New York $4.08B AUM 58.77% 1-Year Est. Return

Optiver Holding's RIOX Position: Q2 2026 in Review

Optiver Holding opened a new position in Defiance Daily Target 2X Long RIOT ETF (RIOX) in Q2 2026: 2,642 shares worth $156K. The stake represents ﹤0.01% of the portfolio and ranks #950 among its holdings. This is a return to the name: Optiver Holding previously reported a position in RIOX as recently as Q4 2025.

Optiver Holding first reported a position in RIOX in Q1 2025 and has held it in 5 quarters since. The position peaked at $882K in Q2 2025. 8 funds tracked by Wall St. Rank hold RIOX as of Q2 2026.

  • Optiver Holding held 2,642 shares of Defiance Daily Target 2X Long RIOT ETF worth $156K as of Q2 2026.
  • Defiance Daily Target 2X Long RIOT ETF was a new Optiver Holding position in Q2 2026.
  • Defiance Daily Target 2X Long RIOT ETF made up ﹤0.01% of Optiver Holding's portfolio in Q2 2026, its #950 holding.
  • Optiver Holding first reported a position in Defiance Daily Target 2X Long RIOT ETF in Q1 2025 and has held it in 5 quarters since.
  • Optiver Holding's Defiance Daily Target 2X Long RIOT ETF position peaked at $882K in Q2 2025.
  • 8 funds tracked by Wall St. Rank held Defiance Daily Target 2X Long RIOT ETF as of Q2 2026.

Based on Optiver Holding's 13F filing for Q2 2026, filed 12 Aug 2026.