* Overallotment option fully exercised
* Boosts total sale to 11.36 bln Danish crowns
* Sellers still hold 57.4 percent of shares
* Pandora shares up 0.8 percent
(Adds share price)
COPENHAGEN, Oct 8 (Reuters) - Danish jeweller Pandora said arrangers of its initial public offering fully exercised an overallotment option on 6.68 million shares, boosting the total IPO value above $2.1 billion.
Pandora debuted on the Copenhagen bourse on Tuesday after a partial exit by its majority owner, private equity investor Axcel, and the founding family.
Pandora said the overallotment, also called a greenshoe, raised the total number of shares in the offering to 54.09 million and the value of the deal to 11.36 billion crowns ($2.1 billion) from a preliminary 9.96 billion.
Pandora shares were up 0.8 percent at 258 crowns by 0809 GMT, 23 percent above its IPO price of 210 crowns.
After the exercise of the greenshoe, the selling shareholder Prometheus Invest ApS would hold about 57.4 percent of Pandora's share capital, the company said.
Prometheus is a vehicle set up by Axcel, the company's founders and share-owning management for the purpose of the IPO.
Goldman Sachs, J.P. Morgan, Morgan Stanley and Nordea Markets were the joint global coordinators and bookrunners for the offering. Carnegie and SEB Enskilda were co-lead managers. (Editing by David Cowell and Dan Lalor) ($1 = 5.330 Danish crowns)