I opened my Macy's account in Nov 15 with a $400 SL but did not receive any credit increases (put about $100 a month on it)
After reading on here that it is sometimes a soft pull I requested a CLI last night to increase my limit by $1600 for a $2000 total limit
It was approved today!!
My fako is 718 on credit karma but my average age is only 4 months
I will check CK in a couple of days to see if it was a HP or not.