Complex sentence: CTA manages two Plans to govern the collection, processing and dissemination of trade and quote data: the Consolidated Tape Plan, which governs trades, and the Consolidate Quotation Plan, which governs quotes.
Split into simpler sentences: CTA manages two Plans to govern the collection, processing and dissemination of trade and quote data. The two Plans are: the Consolidated Tape Plan, which governs trades and the Consolidate Quotation Plan, which governs quotes.