13F

Position

SIMPLEX TRADING, LLC in Pfizer 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 $4.03M$24.90$28.08

QuarterSharesValueImplied pxEst. markFlowWeight
Q4 20251.49M$37.1M0.0%
Q1 20261.27M$35.6M$28.08$4.03M−$5.59M0.0%