Snubbing Stub Quotes

10 11 2010

This is a stub blog post.

The SEC has approved new rules that would prohibit Stub Quotes.

What’s  a stub quote? It is a bid on a stock that is intentionally low, when the quote for the stock is high.  It is used solely as a placeholder on a bid for the stock.  It is not to be taken as a serious offer.

Why ban it? It is thought that the presence of stub quotes in the buying algorithm of electronically traded stocks caused the May 6, stock market flash, when the algorithms mistook them for serious bids.  This combined with the ban on “Naked Access” is intended to prevent further flashes.