嘉能可股价在公布业绩后上涨2.7%，公司表示将向股东返还20亿美元。

Group 1 - The core point of the article is that Glencore's stock price increased by 2.7% following the announcement of its earnings, indicating positive market reaction to the financial results [1] - The company announced a return of $2 billion to shareholders, reflecting its commitment to shareholder value [1]