Execution
When should a project trade off the order book instead of on it?
When the trade is large relative to the book's depth.
A treasury sale that is a multiple of the resting liquidity within 2% of mid will walk the price down and widen the spread, and every holder sees it. Worked over time, or executed off-book with a counterparty, the same sale leaves the public book untouched.
The decision rule, with the numbers, is in when to trade OTC instead of the order book.


