Volatility Decay in Leveraged ETFs
A 2x leveraged ETF doubles each day's move, but in a long choppy market it quietly "leaks".
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Text version · Indexes & ETFs, lesson 6: “Volatility Decay in Leveraged ETFs”
A 2x leveraged ETF doubles each day's move, but in a long choppy market it quietly "leaks".
2x each day, not 2x over time
A leveraged ETF resets its position after every close and only promises 2x the index's move for that day. String several days together and the result is no longer simply 2x.
Quietly leaking in a choppy market
The index rises and falls back to where it started, but the leveraged ETF can't get back. That's volatility decay. The bigger the swings, the faster it leaks, so it suits short-term trading, not long-term holding.
The result depends on the path
When the index edges up every day, compounding lets the 2× ETF beat "index gain × 2"; after two straight 10% drops, the 2× ETF falls 36%, not 38%. Same endpoint, different path, different result. A −1x inverse ETF suffers volatility decay too.
Key takeaways
- A leveraged ETF tracks a multiple of the daily return, not of the long-run return.
- When the market chops back and forth, daily rebalancing causes volatility decay. The bigger the swings, the faster the decay.
- Results depend on the path: in a smooth one-way rally it can beat "index gain × multiple", but in a choppy market it falls behind.
- Leveraged ETFs suit short-term trading, not long-term holding.
Try it yourself
You can do these exercises in this lesson's interactive simulation:
- Click "Two-day example": the index goes +10% then −9.09%, back to where it started. What's the 2× ETF worth after two days?
- Pick "Choppy" and play to day 40: how much did the index move? And the 2× and −1× ETFs?
- Raise the daily swing from 2% to 8%: does the decay get bigger or smaller?
- Pick "Uptrend": does the 2× ETF beat twice the index's gain this time?
Quiz and explanations
- 1. An index rises 10% on day one and falls 9.09% on day two (back to where it started). Where is a 2x leveraged ETF after two days?
- Answer: Down about 1.8%.1.2 × (1 − 0.1818) ≈ 0.982.
- 2. Why isn't it a good idea to hold a leveraged ETF long-term?
- Answer: Volatility decay in choppy markets.Even if the index ends up back where it started, the leveraged ETF can be at a loss.
- 3. An index falls 10% on each of two days. How much is a 2x leveraged ETF down in total after two days?
- Answer: −36%.Index: 0.9 × 0.9 = 0.81, down 19%. 2x ETF: 0.8 × 0.8 = 0.64, down 36%, not 2 × 19% = 38%.
Terms in this lesson
- leveraged ETF (Leveraged ETF): An ETF that aims for 2× or 3× (or the inverse of) an index's daily return, rebalancing every day.
- volatility decay (Volatility Decay): How leveraged products slowly lose value in choppy markets because of daily rebalancing.