Markets were mixed again on Wednesday.
The S&P 500 fell 0.2 percent to end August with a 0.1 percent decline.
The STOXX Europe 600 fell 0.4 percent to end August with a 0.5 percent gain.
The Nikkei 225 jumped 1 percent to end August with a 1.9 percent gain.
While falling oil prices and rising expectations for interest rate hikes have been giving the stock market hiccups, Oppenheimer's head of technical analysis Ari Wald is bullish on stocks.
"The technical setup is very strong here," Wald told CNBC on Tuesday.