UPDATE 3-Japan regulator suspends BNP Paribas unit 2 weeks

* Commodities, equities derivatives business to halt trade

* Regulator says trader tried to fix share price

* BNP failed to properly respond to earlier punishment - FSA

* Shares up 2.7 percent in Paris trade

(Adds comment, detail, and background)

By David Dolan and Nathan Layne

TOKYO, Oct 23 (Reuters) - Japan's financial regulator ordered a unit of French bank BNP Paribas (BNPP.PA) to halt some of its business for two weeks as punishment for stock price fixing and providing inaccurate information about a bond deal.

BNP Paribas Securities (Japan) is to suspend all business at its equities and commodities derivatives division for the first two weeks of November, the Financial Services Agency said on Friday, the second time in a year the regulator has punished the bank.

The bank said it would replace the head of the brokerage and the head of the equities and commodities derivatives division to strengthen internal controls.