first-half profits, losses, sales etc are ones made in the first six months of the financial year:
• Shares in the UK electronics group increased in price after they reported a 41% increase in first-half pretax profit.
• First-half sales grew 11% to $1,025 billion.
— first half noun [singular] :
* * *
first half UK US noun [C, usually singular]
► (US also fiscal first half) ACCOUNTING, FINANCE the first six months in a company's financial year: »
We have enjoyed a very successful first half.
»The company's first-half results are likely to be substantially ahead of expectations.
Financial and business terms. 2012.