It's about the housing bubble and subsequent crash and the poem is here. Excerpt:
So now we come to the end of this ode
Without much to say for certain.
I hate to say, that where we are
Not beginning or final curtain.
The truth of the matter at the end of the day
Is that markets will make you humble.
Just when you think that it's time for a drink
They will turn and fortunes will crumble.