VXX vs. VIX: Key Differences, Risks & When to Trade
VXX is the ProShares VIX Short-Term Futures ETF that tracks a rolling portfolio of VIX futures, while VIX is the CBOE Volatility Index itself—the market’s “fear gauge” calculated from S&P 500 option prices.
Traders mix them up because both pop up on the same volatility screens and both spike during panic days, but only one (VXX) is an actual tradeable product that decays over time.
Key Differences
VIX is a mathematical index—no shares, no contango drag. VXX is an ETF that buys monthly VIX futures, suffers daily roll costs, and often bleeds 5–10 % a month when markets are calm.
Which One Should You Choose?
Day-trade spikes? VXX gives direct access. Hedge long equity? Short VXX or long VIX calls. Avoid VXX buy-and-hold—it’s built to lose value as futures converge downward.
Can you buy the VIX like a stock?
No. The VIX is an index; you access it through options, futures, or ETFs like VXX, UVXY, or SVXY.
Why does VXX decay even if VIX is flat?
Because it rolls from pricier front-month futures to cheaper next-month futures daily, paying contango costs.
When is the best time to trade VXX?
During sharp market selloffs when VIX futures jump fast—ideally intraday, exiting before the volatility crush.