13F

Position

SIMPLEX TRADING, LLC in Lyell Immunopharma, 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 −$396$30.76$20.06

QuarterSharesValueImplied pxEst. markFlowWeight
Q4 202537$1.14K0.0%
Q1 2026693$13.9K$20.06−$396$13.2K0.0%