Nasdaq: Latest halt due to ‘human error’ By: MarketWatch October 29, 2013 at 14:41 PM EDT Nasdaq OMX Group pointed to “human error” as the cause of an outage around midday Tuesday in the Nasdaq Composite Index, Nasdaq 100, and some option trading. Read More >> Related Stocks: Facebook HGX Nasdaq OMX Group PHLX Oil Service Sector Index PHLX Semiconductor Sector Index Twitter, Inc.