i = (example_data['outstanding_balance'].eq(0)
      .groupby(example_data['contract_no']).transform('idxmax'))

j = (example_data['maturity_date'].eq(example_data['date_report_created'])
      .groupby(example_data['contract_no']).transform('idxmax'))

i.eq(j).view('i1')

0    1
1    1
2    0
3    0
4    0
5    0
dtype: int8