For context, direct link to NASDAQ rule 4626: http://nasdaq.cchwallstreet.com/nasdaq/main/nasdaq-equityrules/chp_1_1/chp_1_1_4/chp_1_1_4_1/chp_1_1_4_1_8/defaul

For context, direct link to NASDAQ rule 4626: http://nasdaq.cchwallstreet.com/nasdaq/main/nasdaq-equityrules/chp_1_1/chp_1_1_4/chp_1_1_4_1/chp_1_1_4_1_8/default.asp#nasdaq-rule_4626 http://nasdaq.cchwallstreet.com/nasdaq/main/nasdaq-equityrul... EDIT: Also, "NASDAQ Equity Trader Alert #2012-21: NASDAQ Proposes Policy for Unfilled Orders in the Facebook Inc. (FB) IPO Cross": http://www.nasdaqtrader.com/TraderNews.aspx?id=ETA2012-21 http://www.nasdaqtrader.com/TraderNews.aspx?id=ETA2012-21 (Their website fails to work in Chrome if you click around -- alert bubble states only IE and Firefox are supported. Tsk tsk.)