HSBC Group is expected in the next few months to sell its 8.0% stake in the Bank of Shanghai. The financial services giant could receive as much as $800 million from its shares in the second-tier Chinese lender. Why do analysts think HSBC will unload its holding soon? It looks like the Bank of Shanghai is set to raise $2 billion by selling newly issued stock, on the Shanghai and Hong Kong exchanges, with a value of up to 30% of its existing shares. The listing could occur before June, so HSBC will have to act now if it does not want to be trapped by a lock-up period, typically imposed on e