军工股洛克希德马丁发行20亿美元投资级债券。本周稍早，该公司业绩报告让投资者措手不及。

Group 1 - The core point of the article is that Lockheed Martin has issued $2 billion in investment-grade bonds, which follows an unexpected earnings report that surprised investors [1] Group 2 - The bond issuance indicates Lockheed Martin's strategy to raise capital, potentially for future investments or operational needs [1] - The unexpected earnings report may reflect underlying challenges or opportunities within the defense sector that could impact investor sentiment [1] - The issuance of bonds at this scale suggests confidence in the company's financial stability and market position despite recent performance fluctuations [1]