Giant AMT Tax Added (an Error?) Something is being double-counted

Hi Turbo Tax,

I had prepared 99% of my return in APril and sent in my pre-payment that was estimated at that time.

Now it's August, and I am reviewing in preparation to file.  I noticed that turbo tax is now saying I owe an additional $$$ giant AMT bill.  I think this is an error

 

It is a little opaque to see how Turbo Tax may be calculating this information, but it seems to say I had a large disposition of assets. I think this may be double-counting some stock that was given to my husband through his job and already reported as our W-2 income.

How can I review and correct this?

Thank you,

Emily