Cramer during Tuesdayâs Stop Trading! reiterated his buy call on Citigroupâs secondary shares, urging viewers to âbuy the heck out of them.â âCitigroup is the ultimate $3 call,â Cramer said, bucking the overwhelmingly negative response to Citi's offering. âI have rarely ever seen an option as good as this one on a turnaround between now and 2012. http://www.cnbc.com/id/34464921