Porsche has announced a 10% increase in pre-tax profit for the first half of its fiscal year. Profits were boosted by strong sales of the Porsche 911. F. Porsche AG will record a Group profit of approximately 154 million Euro for the first six months (August 1, 2001 to January 31, 2002) of its current fiscal year, 10.2% higher than the figure for the same period a year previously (139.7 million Euro).