* STOXX 600 up 0.3 pct at close
* Dixons Carphone plummets 23 pct after profit warning
* Earnings have seen harsh share price reactions -BAML
* Simcorp hammered after Q2 results miss
* Recovery continues for Provident Financial (Adds detail, updates prices at close)
LONDON, Aug 24 (Reuters) - Gains by cyclical sectors helped push European stocks higher on Thursday while heavy losses in Dixons Carphone after a profit warning dominated trading.
The pan-European STOXX 600 was up 0.3 percent at its close, in line with euro zone stocks and blue chips .
Dixons Carphone shares plummeted as much as 29 percent after the mobile phone retailer downgraded expectations for full-year profit, reflecting tougher conditions in the mobile market as customers hold on to handsets for longer.
"With the December results some way off and Black Friday week (of retail discounts) looming, Dixons will be under pressure to provide additional detail on today's complex variables in coming weeks," said Stifel analysts.
Dixons Carphone was the worst-performing among European retail stocks so far this year, even before Thursday's decline wiped nearly a quarter off its market value. The index was down 0.2 percent on the day as Dixons weighed.
Bank of America Merrill Lynch European equity strategist Ronan Carr said he didn't favour Europe's retail sector, partly because of its heavy skew towards British companies.
In general results this quarter have seen investors punish companies that missed expectations particularly harshly, a trend which analysts put down to slowing macroeconomic momentum.
"Expectations caught up with what have been solid fundamentals and we are at a juncture now where some macro indicators have shown signs of topping out," Carr said, pointing to dollar weakness as another headwind to European earnings.
"The fundamentals are supportive of continued earnings recovery but there's a challenge from the currency," Carr added.
Among individual stocks, shares in Danish biotech firm Genmab jumped more than 11 percent after it announced positive topline results in its phase III Alcyone trial.
British sub-prime lender Provident Financial added to a recovery from its sharp falls earlier in the week, jumping 13.2 percent.
Sunrise Communications gained 7.3 percent after its second-quarter net income more than doubled and Berenberg raised the stock to a "buy".
Danish software firm Simcorp dropped 9.8 percent after its second-quarter results missed expectations, with order intake down 22 percent year-on-year.
"There's a risk that the tech sector could be a little over-owned," said Carr, pointing to tech stocks consistently being an overweight in BAML's monthly fund manager surveys.
"And if we start to get negative results, in line with the theme that misses get punished more, I think we could see share price reactions being more severe."
The company earnings season in Europe was drawing to a close, with almost 90 percent of MSCI Europe firms having reported. So far, 55 percent have beaten forecasts and 39 percent have missed.
By comparison, more than two-thirds of companies reporting in the United States topped expectations.
(Reporting by Helen Reid and Kit Rees; editing by Mark Heinrich)