As the deal's so-called stabilizing agent, Morgan Stanley could support the stock through a pool of Facebook shares known as an overallotment.

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Both properties were owned by Mapletree Investments, which will own 32% to 35% of the trust, depending on whether an overallotment option is exercised.

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An overallotment option of uP to 600, 000 additional ADSs from Luxfer and up to 600, 000 additional ADS from the selling shareholders will also be available.

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