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Grail Stock Jumps 36% on FDA Staff's Positive Galleri Assessment

By Stocks Desk · · Updated 2026-09-23 11:54 UTC
A flat vector illustration of a glass vial containing a single drop of red liquid.

Grail shares have spiked 36% after FDA staff issued a positive assessment of the Galleri test, citing its high accuracy and low false-positive rate. TradingView notes that the FDA document confirms the test’s ability to detect multiple cancers at curable stages ahead of the September 23 advisory committee meeting.

  • TradingView highlights the FDA staff’s specific praise for Galleri’s low false-positive rate and its ability to identify most cancers at stages amenable to curative treatment. The report also details the test’s mechanism as a next-generation sequencing tool designed to detect cancer-specific methylation patterns in blood, targeting adults aged 50 and older.

    Source: TradingView
  • Grail shares surged after FDA staff highlighted the Galleri test's ability to detect multiple cancers at curable stages.

    Source: Benzinga
Based on reporting by Benzinga and TradingView, compiled by the Tradingbird desk.

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