Boeing (BA) filed to raise up to $25 billion through a combination of stock and debt offerings and entered into a$10 billion supplemental credit agreement with lenders. The move comes as the company attempts to shore up its balance sheet amidst ongoing strikes at its West Coast factories.While Boeing filed to raise up to $25 billion, analysts estimate that it needs to bring in at least$10 billion and $15 billion, according to Reuters. This would allow the company to maintain its credit ratings, which are ...