If you're retiring, but the office will remain open, records for open transactions should be turned over to the new owner. (realtormag.realtor.org)
Base fee + $ 0.0003 per share for stock valued below $ 1; For stocks priced under $ 1, $ 100 minimum investment (principal) required per opening transaction. (valuepenguin.com)
This would be a common scenario (federal law requires investors to have at least 50 % of their margin equity when opening a transaction). (money.stackexchange.com)