like veecee said this is usually a data provider problem and seems like it in this case too... Fixing this is a manual process. I have notified the marketwatch.

like veecee said this is usually a data provider problem and seems like it in this case too... Fixing this is a manual process. I have notified the marketwatch.com data team and someone at marketwatch.com should be taking care of this shortly. Apparently over 4k ticker data were corrupted by the provider.