Updated 1.40pm: The FTSE recovered slightly after plunging at midday on news of the coalition government's £6.2bn spending cuts.
US markets plummeted almost 4% yesterday as the fallout from the eurozone crisis continued to escalate.
Lyxor Asset Management has launched its S&P 500 ETF on the London Stock Exchange, along with two other funds tracking Australian and Canadian benchmarks.
Commerzbank and Deutsche Bank have listed S&P 500 ETFs on the Xetra exchange in Germany.
Standard & Poor's has licensed its S&P 500 index to seven ETF issuers to serve as the underlying for a range of new funds.
HSBC Asset Management has launched an ETF tracking the S&P 500 index on the London Stock Exchange (LSE).
ETF providers including Lyxor have signed licence agreements with Standard & Poor's to launch funds on the S&P 500 index.
Several European ETF issuers will be able to launch ETFs on the S&P 500 index as of 17 May, when Standard & Poor's exclusive arrangement with iShares ends.
Deutsche Bank has released the db x-trackers S&P 500 Index ETF, to be listed across exchanges in Europe and Asia from mid-May onwards.
Scott Martindale, senior managing director for Sabrient Systems, compares ETFs tracking different geographical regions