Hi - backtesting an algo been working on and notice a steep dip July23-July27 so after digging appears as though the algo buy a position Yuma Energy, Inc. 9.25% Series A Cumulative Redeemable Preferred Stock at $16.51 and on the same days then sells Yuma Energy, Inc. common equity at $0.74 giving me quite a healthy loss on that day - attached pic shows this - what am I missing?