There's a lot of confusion about what this key metric really means.
News & Analysis: ProShares Short VIX Short-Term Futures ETF
After recovering from a big decline, many investors seem to think the all-clear has sounded.
Find out whether changes to this niche investment area have solved its former problems.
Don't let these quiet moves trick you.
Did this latest move really help investors -- or hurt them again?
It's a lesson short-sellers know well.