According to Official Guinness Records,
The most casino chips shuffled into a single stack is 20, achieved by Saar Kessel (Israel) in Mishmar HaShiv'a, Israel, on 09 November 2017.Saar Kessel also holds the record for 'Most poker chips balanced on one finger' and 'Most cups balanced on the forehead.' He attempted this record to celebrate Guinness World Records day 2017.
For a complete list of 2017 records, please visit 2017 Guinness Records in Israel.