1. It will be reported after market hours. It is not confirmed.

2. It will be reported after market hours. They are not confirmed.
( Which one is grammatical? What does 'it' or 'they' refer to?)

#1 seems to imply that the report is not confirmed.

#2 seems to imply that the market hours are not confirmed.

There’s no clear antecedent for ‘it’ or ‘they.’

The first pair of sentences seems to be the better choice since ‘it’ is present in both.