This is a data bug. The price of $199,999.00 for TROV_U looks bad but it's not clear to me why. We'll have to do some digging to figure out why.
In general, the best way to report a data issue is by emailing in to [email protected]. Posting in the forums in tandem is a good idea so that others can see that it's been reported if they find the same issue.
Some data bugs are easier to fix than others. There will be a batch of data fixes rolling out soon but this bug won't be included in it simply because we don't yet know what's causing it.
In the meantime, my best suggestion would be to take a look at this notebook posted by Quantopian engineer Scott Sanderson. It's a very good filter for pipeline and I suspect it will take TROV_U out of your universe. It's a good baseline filter to remove a lot of securities that aren't usually good candidates for trading.
Thanks for reporting the issue.
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