Mainly applies to international equities. Market or limit order in which the customer does not desire to transact automatically at the inside market (market held) but instead has given the trader or floor broker ( listed stock ) time and price discretion in executing on a best efforts basis and will not hold the broker responsible if he misses the print within his limits (limit not held) or obtains a worse price (market not held). The order is marked "not held, disregard tape/D.R.T., take time" or bears any such qualifying notation, excluding "or better". See: held order .
NOT HELD ORDER (N.H. ORDER)
Meaning of NOT HELD ORDER (N.H. ORDER) in English
Campbell R. Harvey. Hypertextual finance English glossary. Английский словарь гипертекстовых финансов. 2012