Feature guide · Flow

How to investigate an unusual print

A large print is not an instruction. Put it back into the contract, price, open interest, and market structure before deciding whether it deserves attention.

Treat a trade as a clue

A large options trade could be a directional bet, hedge, one leg of a spread, closing trade, roll, or dealer activity. The flow panel tells you what happened; it does not inherently tell you what someone believes with conviction.

A six-step investigation

  1. Check the underlying context: where is price, and is it near a key node, earnings, or a macro event?
  2. Verify the contract: what are the Call/Put type, strike, expiry, trade size, and notional value?
  3. Inspect the execution: Ask/Bid/midpoint and SWEEP provide clues about aggressiveness, but do not prove direction.
  4. Check OI: when subsequent OI data is available, decide whether the trade looks more like an opening, a close, or remains indeterminate. Today's OI does not update immediately.
  5. Return to structure: is the strike near a current GEX node, price boundary, or air pocket?
  6. Wait for confirmation: watch whether the underlying price, subsequent trades, and structure produce evidence in the same direction.

Dark pools and unusual blocks

Dark pool prints are reported off-exchange or non-displayed trades and are commonly studied for their location and size. They usually do not fully reveal either side's intent and cannot independently establish a bullish or bearish view. Cross-check them against public price, time, volume, and subsequent price action.

Record your conclusion

A useful note includes the facts—the contract and time—your interpretation and why it matters, the invalidation condition, and the eventual outcome. That turns Flow from an emotional trigger into a source of information you can review.