Status is online Henry Schwartz • 1st Owner, Trade Alert LLC 4h • 13F Filings for Q4 2019 have been processed, with 896 filers disclosing 194M contracts, nearly 73% of the nonindex open interest. Data shows relative stability for liquidity leaders Susquehanna International Group, LLP (SIG), Citadel, and Barclays and notable increases in contracts held by Group One Trading, LP, Millenium Capital Management, and Nomura. hashtag#optionshashtag#volatilityhashtag#liquidity