Register on Our Site Register on our site to receive the latest updates in portfolio and ISO listings. As always, we are looking for portfolios and ISOs to sell. Call us today for a confidential evaluation! 866.448.1885. ATMPortfoliosForSale.com ATMPortfoliosForSale.com has officially launched as of October 2008! This is the place where sellers can post small ATM businesses and portfolios for FREE! Buyers can contact sellers directly!!! Finally, a fluid market to buy and sell existing ATM placements!