Here are five ETFs that investors should avoid because of their illiquidity, volatility and highly leveraged nature.

The average health care fund rose 1.5% in the past week as investors mulled Obama's health care plan.

Shares of Johnson & Johnson, Pfizer and Biogen dropped, dragging down health care ETFs.

Investors dumped shares of health care companies last week on fears that reform plans could sap profits.

While there is still some downside left for this week, stocks should rise in anticipation of the next Fed meeting.

Funds with short-selling strategies or those that invested in natural gas or copper were the best for the three-month period.

Biotech funds dominate the best-performing list for the week.

"For 2023, we again expect solid growth in our two most important measures of success: revenue and free cash flow," said CFO Jim Kavanaugh.

"I am deeply sorry for the impact to our employees and customers," said Southwest CEO Bob Jordan.

"We achieved these results while continuing to invest in broadband, our 10G network evolution, Xfinity Mobile, Peacock, and theme parks, and we also took cost actions to further our growth in the future," said CEO Brian Roberts.