Invesco QQQ QQQ

The route row on Robinhood Chain and the other issuers the book reads, for reference, normalised to one unit and set against one reference price.

Book: unread

Tracked here

Reference price

Chainlink Robinhood QQQ / USD on Robinhood Chain.

Feed 0x80901d846d5D7B030F26B480776EE3b29374C2ae

The reference carries its own state and age. Against an unread reference the book shows no spread. How states work