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Block Trades Scanner

Institutional-size prints crossing the tape, with the strike price, share count and notional value of each block.

#block-trades-scanner

What an alert looks like

block-trades-scanner Example

  1. Scanner Alert APP Yesterday at 12:42 AM

    BLOCK TRADE HDB IN +1.11% $23.60 2.9M shares$68.44MVol 4.67M

    JBLU US +3.16% $4.89 513.61K shares$2.51MVol 23.92M

Why it fired

2.9M shares in one print against 4.67M traded all day — a single block accounting for most of the session.

Block size vs. day volume 2.9M of 4.67M

A past alert, rebuilt in TickerRoom's own components to show the format — illustrative, not live market data. The delayed feed shows real ones, 15 minutes after they fire.

What puts a message in this channel

  • An institutional-size block crosses the tape
  • Strike price, share count and notional value are shown for each

What to do with it

Run /volume-report to see how much of the day printed off-exchange.