Placed on a list that dictates that the trader may not maintain positions, solicit business, or provide indications in a stock, but may serve as broker in agency trades after being properly cleared. Traders are so restricted due to investment bank involvement with the company on nonpublic activity (i.e., mergers and acquisitions defense), affiliate ownership, or underwriting activities; signified on the Quotron by a flashing "R." A restricted list and the stocks on it should never be conveyed to anyone outside of the trading areas, much less outside the firm. See: Grey list.