This one makes me go, "Hmmm."
The quote that got my attention was, "Greifeld [Nasdaq Chief Executive Robert Greifeld] also said extensive testing that was performed ahead of the deal failed to spot this problem."
I wish I had a dollar for every time I have heard or said that.
In other reports, Greifeld alluded to coding problems.
"Nasdaq’s systems fell into a “loop” that prevented the second-largest
U.S. stock venue operator from opening the shares on schedule following
the $16 billion deal, he [Geeifeld] said."