Leveraged ETFs aim to deliver a multiple (2x, 3x) of an index's daily return; inverse ETFs aim to deliver the opposite. The critical word is daily — they reset every day, and that reset creates behavior most holders don't expect (what an ETF is, leverage).

The daily reset and volatility decay

Because they rebalance to the target leverage each day, their returns compound daily — and in a choppy, sideways market, that compounding works against you. A series of up-and-down days can leave a 3x ETF down even when the index is flat, a phenomenon called volatility decay or "beta slippage" (volatility). The more the market chops, the more it bleeds.

Why they drift from the underlying

Over any period longer than a day, a 3x ETF will not return exactly 3x the index — sometimes more in a smooth trend, often much less (or negative) in a choppy one (drawdown). The mismatch grows with time and volatility. This is by design, not a bug — but it traps buy-and-hold investors constantly.

A 3x ETF triples the daily move, not the monthly one. Hold it through chop and the daily reset quietly eats you alive.

What they're actually for

Leveraged and inverse ETFs are short-term trading tools — for a day, maybe intraday — not investments to hold (choosing a timeframe). Used for their intended horizon they're fine; held long they're a slow leak. Know the instrument before you trade it, and size for the amplified risk (position sizing).