Activist investor Ackman's fund Pershing dips on Amsterdam debut

William Ackman, founder and CEO of hedge fund Pershing Square Capital Management, speaks to the audience about Herbalife company in New York, July 22, 2014. REUTERS/Eduardo Munoz

AMSTERDAM (Reuters) - Shares in Pershing Square , a fund run by activist investor Bill Ackman, opened down 2 percent on their debut on Monday on the Euronext Amsterdam exchange.

The fund was initially priced at $25 a share, giving it a market capitalisation of $6.2 billion. It was trading at $24.26 at 0905 GMT.

The fund boosts the firepower of billionaire Ackman, famed for aggressive moves such as a $1 billion bet against U.S. nutrition firm Herbalife and a battle to broker a sale of Botox maker Allergan to Valeant Pharmaceuticals .

It is run by Pershing Square Capital Management, a North America-focused equities investment manager founded by Ackman in 2003 which had $14.1 billion in assets under management at the end of June.

(Reporting by Thomas Escritt; editing by Susan Thomas)