Premarket: U.S. stock futures fall ahead of central bank-packed week

Oil prices tumbled over 2% on Monday after oil producing group OPEC+ agreed to accelerate oil production increases, while Taiwan's dollar surged to almost three-year highs at the start of a central bank-packed week for world markets. European shares held just below Friday's one-month peaks , while U.S. equity futures dipped and overall trading was subdued by public holidays in Japan, China and Britain. Brent crude and U.S. West Texas crude futures fell more than a $1 each after a weekend decision by OPEC to further speed up oil output hikes fueled concern about more supply coming into a market…