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It was another painfully low-volume overnight session, which however did not prevent global stocks from hitting another record highs, capping their best week in over two months as the dollar stayed close to nine-month lows following Yellen's dovish retreat in which she noted caution on persistently low inflation (hence today's CPI print will be especially important) as odds of future rate hikes in 2017 and 2018 dropped.

Just in case traders haven't gotten whiplash from all the hawkish-to-dovish-to-hawkish shifts in central bank posturing over the past month, here is the WSJ which reports that for the first time in three years, ECB's Mario Draghi is scheduled to address the Fed's Jackson Hole conference in August, "in a speech that is expected to give a further sign of the ECB’s growing confidence in the eurozone economy and its reduced dependence on monetary stimulus."

The dollar was broadly weaker after dovish comments from Fed Governor Lael Brainard amid reverberations from reports of Donald Trump Jr.’s contact with a Russian lawyer; European equities rebounded with oil while S&P futures were 0.2% higher at 2,428; Treasury yields are 1-2bps lower across the curve with the 10y at 2.346% ahead of Yellen’s much anticipated testimony this morning (House today, Senate tomorrow) for further clues on the trajectory of monetary policy while the Bank of Canada is expected to hike rates later.

U.S. index futures point slightly lower open. Asian shares rose while stocks in Europe fell as energy producers got caught in a downdraft in oil prices and reversed an earlier gain after Goldman unexpectedly warned that WTI could slide below $40 absent "show and awe" from OPEC. The dollar rose, hitting a four-month high against the yen and bonds and top emerging market currencies were back under pressure on Tuesday, following last week’s hawkish rhetoric from central bankers.

In a quiet overnight session, S&P 500 futures are fractionally in the green (2,426, +0.2%) with European and Asian stocks as oil drops second day after an initial ramp higher amid speculation that LIbya and Nigeria may be asked to cap their production. Nasdaq 100 Index are again higher, following the biggest daily advance in more than a week, up 0.4% as of 6:20 a.m. in New York.