The investor highlights growing market uncertainty ahead of an upcoming Fed meeting, noting a 57% probability of a rate hike. Citing historical volatility where QQQ dropped 9% and SQQQ gained 30% during a previous uncertain period, the author is taking a bearish stance. They have made an all-in purchase of SQQQ (ProShares UltraPro Short QQQ) with 1,180.57 shares at an average price of $38.49 per share.