Shares in the company that owns Zara, Massimo Dutti and Pull and Bear have risen more than 23% this year, but fell more than 4% in early trading.
There is concern about the effects of the housing slump in its home market, which accounts for 38% of its sales.
But its boss said sales growth in Spain was in line with the rest of the world.
Inditex reported net profit of 825m euros ($1.21bn; £593m) for the nine months to the end of October, which was 30% ahead of the same period last year.
That figure was better than expected, as a result of a programme of cost-cutting.
Sales rose 17% in the period to 6.63bn euros, which was worse than had been expected.
Inditex has been expanding aggressively, especially in fast-growing economies such as China and Russia.
It currently has stores in 400 cities around the world.