Don't Know Trades and Aged Fails

Quick Answer

A don't know (DK) trade occurs when a party does not recognize or accept the reported trade details, and a DK notice addresses that dispute. A securities fail is a required-delivery failure. When the fail remains outstanding, it becomes an aged securities fail that requires confirmation.

Not every settlement problem is the same. A DK trade challenges the reported trade details, while a fail concerns required securities delivery.


Don't Know Trades

  • Don't know (DK) trade: A trade for which a party does not recognize or accept the reported trade details.
  • Don't know notice: A notice used in connection with a DK trade.
  • A reported trade that is not recognized or accepted → DK trade → DK notice.

Exam Tip: Gotchas

  • A DK trade is about whether a party recognizes or accepts the reported trade details. It is not a delivery failure.

Aged Securities Fails

  • Securities fail: A settlement failure involving the required delivery of securities.
  • Aged securities fail: A securities fail that remains outstanding and requires confirmation.
  • Required delivery not made → securities fail; fail remains outstanding → aged securities fail requiring confirmation.

Exam Tip: Gotchas

  • An aged securities fail is still a delivery problem. Its distinguishing feature is that it remains outstanding and requires confirmation.