* Board members probed for "aiding of market manipulation"
* Prosecutors charged ex-Porsche CEO, CFO last December
* Stuttgart prosecutors' investigation running since 2009
(Adds comment from prosecutors, background)
STUTTGART, Germany, Feb 12 German prosecutors
have extended a probe into market manipulation to all members of
Porsche SE's supervisory board, including carmaker
Volkswagen's chairman, Ferdinand Piech.
Prosecutors are investigating the 12-member supervisory
board of the German holding company, which owns about 51 percent
of Volkswagen's (VW) shares, for suspected "aiding of market
manipulation," a spokesman said, declining to be more specific.
The move follows a decision by prosecutors last December to
charge the former chief executive of Porsche SE, Wendelin
Wiedeking, and his former finance chief, Holger Haerter, with
market manipulation of VW shares during Porsche SE's botched
2008-09 takeover attempt of much larger VW.
Prosecutors in Stuttgart, where Porsche SE is based, have
been investigating since 2009 whether the company misled
investors in 2008 when it claimed it had no plan to acquire VW.
Porsche SE has repeatedly denied the allegations.
Some German and U.S. investors say that throughout 2008
Porsche SE camouflaged its plans to buy VW and secretly piled up
In March 2008, Porsche SE dismissed as "speculation" talk
that it intended to take over VW.
Seven months later, Porsche SE said it controlled 42.6
percent of VW's common shares and held options for another 31.5
percent of the stock it had not disclosed previously.
Porsche SE's statement caused VW shares to surge to 1,005
euros within days, briefly making VW the world's most valuable
company as short-sellers raced to buy back stock they had
borrowed to bet that VW shares would drop.
Porsche SE's attempts to buy VW backfired and pushed it to
near bankruptcy. Instead of buying VW, the company ended up
selling its sports car business, Porsche AG, to VW.
($1 = 0.7474 euros)
(Reporting by Hendrick Sackmann; Writing by Andreas Cremer;
Editing by Mark Potter)