VXX and UVXY are the two most heavily traded ways for retail investors to take a long volatility position — a bet that fear is about to rise. They look similar on a chart and react to the same events, but underneath they are different instruments with different legal structures, leverage, decay profiles, and tax forms. Confusing them is one of the most common and expensive mistakes in volatility trading.
Both products track short-term VIX futures, not the spot VIX index itself. That distinction matters: the spot VIX is a non-tradable calculation, so these products hold a daily-rolling blend of the first- and second-month VIX futures (often written as M1/M2). The futures curve, not the headline VIX number, drives their long-run behaviour. For the broader product landscape, see our VIX ETFs & ETNs guide.
The core difference: a note versus a fund
VXX is the iPath Series B S&P 500 VIX Short-Term Futures ETN, issued by Barclays. The "ETN" matters. An exchange-traded note is an unsecured debt obligation of the issuing bank. Barclays promises to pay the return of the underlying index (the S&P 500 VIX Short-Term Futures Index, ticker SPVXSTR) minus fees. VXX therefore has essentially no tracking error against its index — but it carries the credit risk of Barclays. If the issuer were to default, noteholders are unsecured creditors.
UVXY is the ProShares Ultra VIX Short-Term Futures ETF. The "ETF" matters too. It is a fund that actually holds VIX futures contracts and uses swaps to reach its target exposure. There is no single-bank credit promise behind it, but it does have tracking error and the operational characteristics of a commodity pool. Critically, UVXY targets 1.5× the daily return of the same short-term futures index that VXX tracks at 1×.
Same engine, different gearing
- Both reference a short-term VIX futures index (M1/M2 blend, ~30-day average maturity).
- VXX delivers that index return at 1×, as an unleveraged note.
- UVXY delivers 1.5× the daily index return, as a leveraged fund, resetting its leverage every day.
Side-by-side comparison
| Feature | VXX | UVXY |
|---|---|---|
| Full name | iPath Series B S&P 500 VIX Short-Term Futures ETN | ProShares Ultra VIX Short-Term Futures ETF |
| Issuer | Barclays | ProShares |
| Structure | Exchange-traded note (debt) | Exchange-traded fund (commodity pool) |
| Leverage | 1× (unleveraged) | 1.5× daily, rebalanced |
| Underlying | Short-term VIX futures index (M1/M2 blend) | Short-term VIX futures index (M1/M2 blend) |
| Tracking | Near-perfect to index (no holdings) | Tracking error from holdings & rebalancing |
| Key risk | Issuer credit risk | Leverage path-dependency & volatility drag |
| Expense ratio (approx.) | ~0.89% | ~0.95% |
| Tax form | Generally capital gains; no K-1 | Schedule K-1 (partnership) |
| Contango decay | Moderate | High (amplified by leverage) |
| Ideal holding period | Days to a few weeks | Intraday to a few days |
Expense ratios are approximate and set by each issuer; confirm current figures on the official Barclays/iPath and ProShares fact sheets before trading.
Both decay — but at different speeds
The futures curve is usually in contango, meaning later-dated VIX futures trade above nearer-dated ones. Because both products roll daily from cheaper near-month futures into more expensive later-month futures, they pay a small "roll cost" almost every day. Over weeks and months this compounds into substantial erosion. We cover the mechanics in depth in why VIX ETFs decay in contango and the underlying maths in VIX futures roll yield.
VXX feels this roll cost at 1×. UVXY feels it at roughly 1.5× and adds a second drag unique to leveraged products: daily rebalancing decay, sometimes called volatility drag. Because UVXY resets to 1.5× exposure every single day, a choppy sideways market grinds its value lower even if the index ends flat.
Why daily reset hurts UVXY (illustrative)
- Day 1: index +10% → UVXY +15%.
- Day 2: index −9.09% (back to start) → UVXY −13.6%.
- Index net: 0%. UVXY net: roughly −0.7%.
- The index returned to its starting point, but UVXY did not. This gap widens with bigger daily swings and longer holds.
This path-dependency is why reverse splits are routine for UVXY: persistent decay drives the share price down, and the issuer periodically resets it. A reverse split changes the share count, not the economics — it is a symptom of the decay, not a fix for it.
Credit risk versus fund risk
The structural choice creates a genuine trade-off rather than a clear winner:
- VXX (note): You accept Barclays' credit risk in exchange for clean, near-perfect index tracking. For short holds, credit risk is usually a minor concern, but it is real and is one reason ETNs can trade away from their indicative value if an issuer suspends creation.
- UVXY (fund): You avoid single-issuer credit risk because the fund holds real futures and swaps, but you accept tracking error, swap counterparty exposure, and the leverage path-dependency described above.
Tax treatment differs
This is a frequently overlooked practical difference. As an ETN, VXX is a prepaid debt instrument and is generally taxed under ordinary capital-gains rules when you sell; holders do not receive a Schedule K-1. As a commodity pool treated as a partnership, UVXY passes through income, gains, and losses to investors on a Schedule K-1 rather than a Form 1099-DIV, which can complicate tax filing. Tax rules change and depend on your circumstances, so verify current treatment with the issuer and a qualified tax advisor.
Which one suits which trader?
Choosing between them
- Short, controlled hedge over days to weeks: VXX gives roughly one-for-one exposure with slower decay and simpler taxes.
- Aggressive, very short-term directional bet on a volatility spike: UVXY's 1.5× gearing delivers more move per dollar — if the spike arrives quickly.
- Wanting to avoid K-1 paperwork: VXX (or the 1x ETF VIXY) avoids the partnership form.
- Wanting to bet on falling volatility instead: neither — see inverse products in UVXY vs SVXY and the mechanics in how to short volatility.
Whichever you choose, both are short-horizon trading tools. They are engineered to track futures over a single day, not to compound wealth over months. Holding either through a long calm stretch is the classic way to lose money in volatility products. This is educational information, not investment advice.
Frequently asked questions
Is UVXY just a leveraged version of VXX?
Not exactly. Both track a short-term VIX futures index built from a daily-rolling blend of the first and second month VIX futures, so their direction is similar. But VXX is an unleveraged (1x) exchange-traded note issued by Barclays, while UVXY is a 1.5x leveraged, daily-rebalanced exchange-traded fund from ProShares. The leverage and the fund-versus-note structure make their risk, decay, and tax treatment meaningfully different.
Does VXX or UVXY decay over time?
Both decay when VIX futures are in contango, which is the usual state of the market. They roll from cheaper near-month futures into more expensive later-month futures every day, losing a little value on each roll. UVXY decays faster because its 1.5x leverage amplifies the roll cost and adds volatility drag from daily rebalancing. Neither is designed to be held long term.
Does UVXY issue a Schedule K-1?
Yes. UVXY is structured as a commodity pool treated as a partnership for tax purposes, so investors receive a Schedule K-1 rather than a Form 1099-DIV. VXX is an exchange-traded note (a debt instrument), so it is generally taxed under capital gains rules and does not issue a K-1. Tax treatment can change, so confirm current details with the issuer and a tax professional.
Which is better for hedging, VXX or UVXY?
For a multi-day portfolio hedge, the unleveraged VXX is generally the more controllable tool because it moves roughly one-for-one with the short-term futures index and decays more slowly. UVXY's 1.5x leverage gives more punch per dollar over a single day or two but compounds losses quickly if the move does not come fast. Both are trading vehicles, not long-term holdings. This is educational information, not investment advice.