Party City, one of the United State's leading suppliers of colourful balloons, disposable tablecloths and small signs declaring "Oh, Kale Yeah!," announced recently that it would shutter 45 of its 870 stores in 2019. Across the internet, many said it was because of a shortage of helium.

A spokeswoman for Party City said that was a big misunderstanding. Yes, some locations have been struggling to meet helium demand. And yes, the company's chief executive, James M. Harrison, issued a statement telling shareholders that the company had just signed a deal with a new helium supplier. But Party City closes some

Is there actually a global helium shortage?

But why? Where did the helium go?

So why not stockpile helium when it's available?

But surely someone has figured out how to store it?

What do Party City analysts think?