Hook
Last week, a screenshot of Butian’s Weibo post circulated through my trading community’s Telegram channel. The Chinese fund manager, known for his long-only calls on NVIDIA and TSMC, announced he had “used all his ammunition” to buy a 2x leveraged ETF linked to SK Hynix after the stock dropped 25.7% in a single session. His reasoning: “This is a milestone for AI. The market is wrong, and I am right.”
I audited the trade not as a fan, but as a trader who has seen leverage destroy portfolios faster than any black swan. In May 2022, I liquidated 40% of my portfolio at a 60% loss to preserve capital during the Terra collapse. Speed and rule adherence saved me. Butian’s move smelled like the opposite of discipline: a conviction-driven bet that ignores structural decay.
Context
SK Hynix is not a random Korean memory manufacturer. It is the primary supplier of High Bandwidth Memory (HBM) to NVIDIA, the de facto bottleneck for AI training clusters. HBM stacks multiple DRAM dies vertically using advanced packaging (TSV and MR-MUF), a technology that SK Hynix dominates over Samsung and Micron by at least one generation. The company’s gross margin went from -10% to 40% in two years, driven entirely by AI demand for HBM3E.
Butian’s thesis is simple: AI compute demand is secular, HBM supply is constrained, and SK Hynix is the monopoly gatekeeper. Therefore, any short-term price dislocation is a buying opportunity. He chose a 2x leveraged ETF (likely the Direxion Daily Semiconductor Bull 2X Shares, but applied to Korean stocks) to amplify returns. His post was meant to inspire confidence: “When you see a ten-bagger before you, you don’t hesitate.”
Core
I spent five years in institutional arbitrage — first with ICO whitepapers in 2017, then DeFi yield strategies in 2020, and finally ETF carry trades in 2024. My rule is simple: only bet on structural advantages that survive volatility decay. Butian’s trade fails this test on three levels.
First, leveraged ETFs suffer from “volatility decay.” A 2x ETF that resets daily loses value in sideways or oscillating markets, even if the underlying asset ends flat. SK Hynix is a high-beta stock with a beta of ~1.5 against the Philadelphia Semiconductor Index. A 25% crash rarely happens without a consolidation phase. If SK Hynix trades between -5% and +5% for a month, the ETF will erode 10-15% of its value from rebalancing alone. Butian might be right about the billion-dollar thesis, but wrong about the instrument. Ledgers don't lie — time decay does.
Second, Butian’s “milestone” framing ignores the competition risk. Samsung and Micron are ramping HBM3E production, and NVIDIA is actively qualifying second sources to reduce reliance on SK Hynix. In a commodity-like market, monopoly margins are temporary. I saw this in DeFi during 2020: Uniswap’s market share dropped from 80% to 40% within a year as Sushi and Curve launched liquidity mining. Efficiency without empathy is just extraction — but in semiconductors, extraction is quickly replicated.
Third, Butian admits to using leverage while advising others to be cautious. That’s not a contradiction; it’s a red flag. When I deployed €50,000 into a cash-and-carry Bitcoin ETF arbitrage in 2024, I wrote down the strategy on paper: entry price, exit rule, maximum drawdown. I did not improvise with leverage after a crash. Volatility is the tax on unverified assumptions — and Butian’s assumption that the market is “wrong” is unverified.
Contrarian
Most retail traders will read Butian’s post as a signal to buy the dip. I read it as a signal to examine the structural integrity of the AI narrative. The market’s fear of geopolitical escalation (US restricting HBM exports to China) and a potential capex slowdown from hyperscalers (Microsoft, Google, Amazon) are not irrational. They are repricing the probability that HBM demand growth slows from 100% year-over-year to 50%. SK Hynix’s forward PE at current prices still implies 30% annual growth for three years. That’s a high bar.
In crypto, we see the same pattern with Layer2 tokens. Arbitrum and Optimism traded at astronomical valuations in 2022 based on the idea that “Ethereum needs scaling.” But when data availability fees collapsed and Base launched for free, the monopoly narrative died. Liquidity is just trust with a speed limit — and trust in Butian’s conviction shouldn’t replace a liquidity plan.
Takeaway
I am not short SK Hynix. I am not long either. But I know that buying a 2x leveraged ETF after a 25% crash is a bet on volatility normalization, not on AI fundamentals. The only alpha that doesn’t decay is due diligence. Butian will likely recover if the market cooperates. But his trade structure will fail if it doesn’t. For crypto traders eyeing AI tokens like Render or Akash, the lesson is the same: harvest when the soil is rich, not when it is wet. Wait for the volatility to settle, then build a position with defined risk. That’s how a battle trader survives.