WNTR is trading at $15.73, up 3.49%, with the move consistent with its inverse exposure to MSTR as Strategy shares weaken. - Strategy shares fell 3% in premarket trading after MSCI announced index-eligibility rule changes that could lead to removal from MSCI indexes. - WNTR’s October 15 ex-dividend date may affect price comparisons but does not establish today’s cause. - No WNTR-specific announcement explaining the October 16 move surfaced; volume and other live trading details were unavailable in cited results.