I'm certainly not a charting expert but both Slow and Fast Stochastics and the RSI indicate an oversold condition. San is quickly closing in to break below the 180 day moving average. If SAN closes below the 180 day moving average, I would suspect a further sell-off. Hopefully, there will be an upswing going into the close, but I doubt it. All those sellers yesterday don't think it will either.
http://bigcharts.marketwatch.com/interchart/interchart.asp?symb=ca%3Asgr&draw.x=58&draw.y=13