The leveraged ETF trap: how SKHU and SKHZ cost me $1,881
Of the roughly $2,000 I lost over six weeks of trading, a single pair of products did most of the damage: SKHU, a 2x leveraged fund tracking SK Hynix, and SKHZ, its inverse cousin. Between them they cost me −$1,881. I didn't lose that because I was catastrophically wrong about SK Hynix's direction — I lost a big chunk of it to the way these products are built. If you trade leveraged or inverse ETFs, or you're tempted to, this is the explainer I wish I'd internalized before I started.
What a leveraged ETF actually is
A 2x leveraged ETF like SKHU aims to deliver twice the daily return of whatever it tracks. If SK Hynix's US-listed shares rise 3% today, SKHU is designed to rise about 6% today. An inverse fund like SKHZ aims for the opposite of the daily move — if the underlying falls, it rises. The critical word in both definitions is daily. These funds reset their leverage at the end of every single trading session. They are engineered to track a one-day return, not a one-week or one-month return, and that single design choice is where retail traders like me get quietly ground down.
Why “daily reset” is a trap for longer holds
Because the leverage resets each day, the fund's return over multiple days is the product of each day's move, not the simple sum. That compounding cuts against you whenever the underlying chops around instead of moving cleanly in one direction. The classic example makes it painfully clear.
Say a stock starts at $100. Day one it drops 10% to $90. Day two it rises 11.1% back to $100. The stock is exactly flat over two days. But a 2x fund tracking it? Day one it loses 20%, dropping from $100 to $80. Day two it gains 22.2%, taking $80 to about $97.80. The underlying is flat and the leveraged fund is down 2.2% — and it never moved against your directional view at all. That gap is called volatility decay, and the more a stock whipsaws, the more the leveraged product bleeds, regardless of where the stock finishes.
A leveraged ETF held through a choppy week can lose money even when you correctly guessed that the stock would go sideways. You're not just betting on direction — you're paying a hidden tax on volatility every day you hold.
How this played out in my SK Hynix trade
SK Hynix had a volatile few weeks — a post-earnings selloff even after record numbers, big intraday swings, and at one point the company's chairman making a headline personal purchase of shares. That is precisely the kind of choppy, headline-driven action that looks like opportunity and behaves like a meat grinder for leveraged products. I traded it in both directions: SKHU when I thought the beaten-down stock would bounce, SKHZ when I thought it would keep falling.
The result across the whole period: SKHU −$1,340 and SKHZ −$542. I lost on the long and the short version of the same underlying. That's the tell that my problem wasn't direction — if I'd simply been wrong about SK Hynix, one of the two should have printed money. Instead the daily reset and my own oversized, in-and-out trading taxed me on both sides. On my worst single day, July 28, an oversized SKHU position alone lost about $1,300.
The second hidden cost: they invite oversizing
There's a psychological trap layered on top of the mechanical one. Because a 2x fund is often cheaper per share than the underlying and “moves faster,” it feels efficient — you get more action for less money. So you buy more shares than you would of a normal stock. But you've now stacked two multipliers: the fund's built-in 2x, and your own larger share count. A position that feels like a modest scalp can carry the real risk of something several times its size. That's exactly how my SK Hynix trades kept turning into account-denting losses instead of the quick scalps I intended.
When these products do make sense
To be fair to the tools: leveraged and inverse ETFs are not scams. They do the job they're designed for — expressing a short-term, usually intraday, directional view without a margin account or options. Used inside a single session, with a defined stop and a size that accounts for the leverage, they can be a legitimate instrument. The issue is almost never the product itself; it's holding it longer than a day, sizing it as if the leverage weren't there, and trading it in a choppy tape. I did all three.
My rules for them now
After tallying the damage, I've written down three hard rules. One: leveraged products get half the position size of a normal scalp, to offset the built-in 2x. Two: same-day only — if I can't close it before the bell, I don't open it, so I never eat overnight and multi-day decay. Three: no trading both the long and the inverse of the same underlying in the same stretch; if I can't pick a direction, the honest move is to sit out. These three alone would have turned my single biggest source of losses into a rounding error. For the full account-wide breakdown of where my money went, see What 890 Trades Taught Me.