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Fund Closures

It is possible to look up if an etf or etn is closing soon? The news of UWTI and DWTI closing and re-opening as UWT and DWT respectively concerned me after I read that after they quit trading, they become OTC only. At some point, the notes (will? might?) get recalled and exchanged for their NAV. I'd like my algo to avoid buying any ETF/ETN that is facing closure and likewise wind-down any holdings if it is closing to avoid having assets caught in limbo.