他们发行了固定数量可公开交易的股票。
巴蒂斯塔的三个儿子仍掌管公司，并负责公司经营，虽然公司49%的股份已可公开交易。
Mr Batista's three sons still control and run the company, although 49% of it is publicly traded.
衍生产品合约可私下达成，其市场缺乏规范，且没有公开交易信息的中心场所。
Derivatives transactions are struck privately and the market is unregulated, with no central exchange where trades are disclosed.
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