Short-sellers to suffer further setback. Wall Street watchers believe the SEC will extend its short-selling limits beyond the current 19 companies now covered before Tuesday’s expiration. An extension could be for 60 days or more, and could incorporate insurance, housing-industry and more financial stocks – or perhaps even be extended to all stocks. Until Friday, an extension was considered unlikely. Broadening the restrictions to all stocks would require an extensive implementation delay, and could be costly to comply with – especially for smaller firms.