Investors believe a Boeing stock sale is coming. Exactly when and how much the company will raise remains a mystery.

Boeing is moving toward raising up to $25 billion to shore up its troubled financial position. The company signaled Tuesday that it could raise that much money by issuing new stock or debt over the next three years.

Burning through cash, Boeing secured a new credit line and moved to raise at least $10 billion by selling new shares, in hopes of demonstrating that it can weather its current crisis. The once mighty manufacturer has been hobbled this year by quality problems that surfaced after a midair mishap in January on a 737 MAX and more recently by a machinist strike that has halted production of most Boeing planes.

Boeing aims to raise much as $25 billion, giving the troubled planemaker the financial resources to withstand a strike and work its way through a series of setbacks.

Key Takeaways Struggling plane maker Boeing plans to sell as much as $25 billion in debt or stock, and received a $10 billion bank credit line.Boeing has been in financial turmoil as it faced problems with aircraft production and is being hit by a strike by machinists that's now a month old.

Boeing announced on Tuesday that it could raise as much as $25 billion in new stock or debt over the next three years to bolster its financial position, which has been under significant strain from ongoing losses and a prolonged workers' strike.