Position
CSS LLC/IL in Regeneron Pharmaceuticals, 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 $262$771.87 → $772.64
| Quarter | Shares | Value | Implied px | Est. mark | Flow | Weight |
|---|---|---|---|---|---|---|
| Q4 2025 | 340 | $262.4K | — | — | — | 0.0% |
| Q1 2026 | 1.17K | $904K | $772.64 | $262 | $641.3K | 0.0% |