▁participants ▁when ▁issues ▁arise . ▁ ▁The ▁Chief ▁Executive ▁of ▁NAS DA Q ▁at ▁the ▁time , ▁Robert ▁Gre if eld , ▁said ▁in ▁an ▁interview ▁with ▁The ▁New ▁York ▁Times ▁that ▁they ▁did ▁not ▁bl ame ▁Ar ca ▁and ▁the ▁NY SE ▁for ▁the ▁shut down , ▁instead ▁suggesting ▁that ▁a ▁bro ader ▁issue ▁with ▁technology ▁in ▁the ▁market ▁was ▁to ▁bl ame , ▁as ▁well ▁as ▁stating ▁that ▁the ▁Nas da q ▁too ▁responsibility ▁for ▁the ▁issues . ▁ ▁New ▁York ▁Stock ▁Exchange ▁response ▁ ▁The ▁NY SE ▁ref uted ▁Nas da q ’ s ▁claims ▁that ▁Ar ca ▁was ▁the ▁primary ▁cause ▁of ▁the ▁out age . ▁They ▁took ▁the ▁position ▁that ▁Nas da q ▁was ▁responsible ▁for ▁establish ing ▁and ▁maintain ing ▁a ▁system ▁that ▁could ▁handle ▁significant ▁amounts ▁of ▁traffic ▁and ▁that ▁a ▁connect ivity ▁issue ▁should ▁not ▁result ▁in ▁a ▁closure ▁of ▁the ▁entire ▁exchange . ▁ ▁Indust ry ▁response ▁ ▁Vari ous ▁responses ▁were ▁issued ▁by ▁US ▁regul ators ▁and ▁financial ▁services ▁fir ms ▁during ▁and ▁after ▁the ▁free ze . ▁Then ▁Chair man ▁of ▁the ▁Sec ur ities ▁and ▁Exchange ▁Commission ▁( SE C ), ▁Mary ▁Jo ▁White ▁issued ▁a ▁statement ▁following ▁the ▁halt ▁saying ▁that ▁the ▁matter ▁was ▁serious ▁and ▁that ▁it ▁" should ▁rein force ▁our ▁collect ive ▁commit ment ▁to ▁address ing ▁techn ological ▁vulner abilities ▁of ▁ex changes ". ▁She ▁also ▁stated ▁that ▁a ▁meeting ▁would ▁be ▁called ▁between ▁the ▁leaders ▁of ▁the ▁NY SE ▁and ▁Nas da q ▁exchange ▁to