EFO provides daily 2x exposure to MSCI's popular EAFE index, which captures the developed equities market outside of the US and Canada. This is the long version of sister-fund EFU, which provides 2x inverse exposure to the same index. Simple long exposure can be had through iShares' EFA and IEFA. The fund achieves leverage through the use of swap agreements, which carry slight counterparty risk. Like all levered funds, EFO tends to underperform its target multiple in volatile markets if held for longer than its daily reset period, and is only suitable for short-term trading positions. For those who venture in, take note of the trading volume and spreads.