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There is no separate Volatility Desk route. Cross-sectional IV rank, IV percentile, and vol-focused drawer tabs live on /app/option-chain-analysis with the same universe grid as GEX.
The standalone OI Change Rank app and /app/oi-change-rank are removed from the product (2026). Per-symbol OI history now lives in Option Chain Analysis as OI Time Machine in the symbol drawer.
The old Gamma Exposure Screener URL redirects to Option Chain Analysis. Same snapshot GEX universe, now with unified rank/drawer URLs and cross-sectional vol on one grid.
One route (`/app/option-chain-analysis`) combines GEX universe ranking, cross-sectional IV columns, and a symbol drawer—using a unified `rank` + `drawerTab` URL contract. GEX inspection includes OI Time Machine (`oi-timeline`); vol sorts open a vol-rank drawer (Overview, Term structure, Earnings).