​U.S. Weekly Flow Report: Gargantuan UVXY Trade, SPX Profit Taking, Asia Upside

In this week’s U.S. Weekly Flow Report, we focus firstly on a huge put trade hitting the market in the ProShares short-term VIX ETN on Friday. With the FOMC in focus for investors, we report on positioning in S&P 500 and SPDR S&P 500 prior to and post the press conference from the Federal Reserve’s Chair Janet Yellen. As noted in our Asia Weekly Flow Report, a spurt of new long calls were traded on Nikkei—U.S. investors have been a participant in the flow.