13F

Position

SIMPLEX TRADING, LLC in MSCI Inc.

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Estimated mark uses implied 13F prices (value ÷ shares). Adds are treated as happening at this quarter’s mark; cuts at last quarter’s. Share jumps can be splits, not buys. This is not realized P&L.

Latest estimated mark −$10.5K$573.73$539.01

QuarterSharesValueImplied pxEst. markFlowWeight
Q4 2025301$172.7K0.0%
Q1 2026620$334.2K$539.01−$10.5K$171.9K0.0%