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IME, I gained when I added my first 3 CCs and lost on the rest. Util changes aside, that loss varied due to length of time previuos accounts wre opened, util, scoring bucket, impact to AAoA, and so on. I lost an average of 20-25 points per account opened (assuming I didn't go on a spree). These were most entirely due to the new account, and not the inquiry (IME). I've found that most of the points returned within 6 months with the remainder by a year.