Somebody is winning. Somebody is losing. Just don’texpect an easy to decipher who will win the battle in this updateon the credit union core systems war.

On one side there is Mark Sievewright, president of the creditunion division at Brookfield, Wis.-based Fiserv, and his mantra isthat it’s not over until it’s over. And Fiserv, he insisted, hasreally just begun to reap the gains from its January billion-dollaracquisition of Open Solutions and its DNA core. Sievewrightcomes into the war with a giant lead.

“We have one-third of the credit union core processing business,and we enjoy a retention rate that is at or near 99%t,” saidSievewright. That means that for every 100 cores that reach the endof their contract (typically a five to ten year term), Fiserv keepsall but one in the fold, by Sievewright’s count.

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