Optiver Holding
QBTZ

Optiver Holding’s Defiance Daily Target 2x Short QBTS ETF QBTZ Stock Holding History

Optiver Holding’s Portfolio QBTZ Stock Details QBTZ Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$133K Buy
+6,940
New +$527K ﹤0.01% 973
2026
Q1 		– Sell
-3,530
Closed -$506K – 2836
2025
Q4 		$506K Buy
+3,530
New +$819K ﹤0.01% 578

Other funds holding QBTZ

HF
HRT Financial New York $54.8B AUM 81.03% 1-Year Est. Return
JF
Jump Financial Chicago, Illinois $12.4B AUM 62.79% 1-Year Est. Return
Jane Street
Jane Street New York $1.21T AUM 78.12% 1-Year Est. Return
SG
StoneX Group New York $2.48B AUM 33.54% 1-Year Est. Return
XT
XTX Topco George Town, Cayman Islands $7.72B AUM 32.88% 1-Year Est. Return
GS
GTS Securities Miami, Florida $4.75B AUM 41.97% 1-Year Est. Return
TSS
Two Sigma Securities New York $1.16B AUM 36.23% 1-Year Est. Return
OMC
Old Mission Capital Chicago, Illinois $6.31B AUM 20.77% 1-Year Est. Return
Simplex Trading
Simplex Trading Chicago, Illinois $171B AUM 85% 1-Year Est. Return
TRCT
Tower Research Capital (TRC) New York $4.08B AUM 58.77% 1-Year Est. Return

Optiver Holding's QBTZ Position: Q2 2026 in Review

Optiver Holding opened a new position in Defiance Daily Target 2x Short QBTS ETF (QBTZ) in Q2 2026: 6,940 shares worth $133K. The stake represents ﹤0.01% of the portfolio and ranks #973 among its holdings. This is a return to the name: Optiver Holding previously reported a position in QBTZ as recently as Q4 2025.

Optiver Holding first reported a position in QBTZ in Q4 2025 and has held it in 2 quarters since. The position peaked at $506K in Q4 2025. 12 funds tracked by Wall St. Rank hold QBTZ as of Q2 2026.

  • Optiver Holding held 6,940 shares of Defiance Daily Target 2x Short QBTS ETF worth $133K as of Q2 2026.
  • Defiance Daily Target 2x Short QBTS ETF was a new Optiver Holding position in Q2 2026.
  • Defiance Daily Target 2x Short QBTS ETF made up ﹤0.01% of Optiver Holding's portfolio in Q2 2026, its #973 holding.
  • Optiver Holding first reported a position in Defiance Daily Target 2x Short QBTS ETF in Q4 2025 and has held it in 2 quarters since.
  • Optiver Holding's Defiance Daily Target 2x Short QBTS ETF position peaked at $506K in Q4 2025.
  • 12 funds tracked by Wall St. Rank held Defiance Daily Target 2x Short QBTS ETF as of Q2 2026.

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