Greece hammered the FTSE 100 in June
The FTSE 100, a stock market made up of the UK's 100 biggest companies, suffered its worst monthly fall in 3 years in June, much of it over just the last few days as the possibility of a "Grexit" increased.
The FTSE 100 dropped 6.6% in June, its worst monthly performance since May 2012.
The biggest fall has come in the last few days - since Friday the index has fallen 4.1% as investors reacted to news over the weekend of a referendum on the latest bailout proposals and Greece defaulted on its €1.6 billion (£1.13 billion , $1.8 billion) International Monetary Fund payment.
Investors and traders are fearful that Greeks could reject the current bailout proposal and force the country out of the eurozone - a so-called "Grexit." That would plunge international financial markets into the unknown.
But while the FTSE 100 has had a tough June, it's off to a great start to July. The index is currently up 1.4% on hopes that a Greek bailout deal could be close.