Period: indication of pause to hear one hoping for net profit? (9)

'hoping for net profit?' is the definition.
I know nothing about this answer so I cannot judge whether this works.

'period indication of pause to hear one' is the wordplay.
I cannot really understand how this works, but
'period' could be 'dot' (as in a full stop) and 'dot' is found within the answer.
'of' could be 'o' and 'o' is located in the answer.
'one' could be 'me' (a setter might use 'one' to humourously mean 'me') and 'me' is located in the answer.
This explanation may well be incorrect...

Can you help me to learn more?