Investors pumped a net $8.4 billion into U.S. equity exchange-traded funds (ETFs) for the week until July 10, the highest inflows since early-January when this year's bull run first gathered momentum, according to new data from research tracker Lipper.
Just one ETF, the SPDR S&P 500, accounted for the lion's share of that money, with net inflows of $5.5 billion, Jeff Tjornehoj of Lipper said in a note on Thursday.
Trading screens lit up after dovish comments by Federal Reserve Chairman Ben Bernanke on Wednesday when he said in a speech in Cambridge, Massachusetts that "highly accommodative policy is needed for the foreseeable future."
(Read More: Bernanke Bump Sends Stocks to Record Highs)
"Things are looking a bit rosier, what's happened? Chairman Bernanke has calmed our nerves a little bit," Tim Harris, head of Investment at Lloyds TSB Private Bank, told CNBC Friday.
The Lipper data however wouldn't have captured more recent equity buying by investors, which helped push the Dow and the S&P 500 to all-time highs on Thursday. The Nasdaq meanwhile logged its best close since 2000.
Asian equities enjoyed a relief rally on Thursday and European shares also rose after strong gains in the previous session.
Stocks have taken just under three weeks to recover from their recent "taper tantrum" which began on May 21 when the U.S. central bank first indicated that its quantitative easing program could be scaled back this year. Bond yields ticked higher in anticipation that the liquidity provided by the Fed - which has so far suppressed interest rates - could be moderated.
The volatility also hit stock markets across the globe. The U.K.'s FTSE 100 fell 12 percent in 22 days before rebounding 7 percent over the past two weeks. The S&P 500 slipped 6 percent in the same amount of time before surging back in just 12 days. Japan's Nikkei 225 tanked 20 percent in 16 days before roaring back 16 percent.