Logic does not bleed; only code fails.
But when the code is a 2x leveraged ETF on a Korean memory chipmaker, the failure mode is not a smart contract exploit—it is the silent entropy of volatility decay. On July 11, 2025, veteran public market investor Butan publicly announced he had “used up all his ammunition” to buy SK Hynix’s 2x leveraged ETF after a 25.72% single-day plunge. His reasoning? “You must buy when the market panics.”
Context
The move came on the heels of a sharp sell-off in global semiconductor equities, triggered by whispers that hyperscaler AI CapEx might slow. SK Hynix, the dominant supplier of HBM3E memory for NVIDIA’s H100 and B200 GPUs, saw its stock drop from a recent all-time high. Butan, a prominent figure in both the A-share and crypto commentary circles, positioned himself as the rational contrarian—buying the dip because he believed “SK Hynix has become a milestone in the AI narrative.” His purchase was reported on Xueqiu, a Chinese social platform for stock market participants, and quickly spread to crypto Telegram groups as a “signal” that the AI trade was still alive.
Core — Systematic Takedown of the Leveraged Bet
Butan’s action, from a crypto security audit partner’s lens, resembles a highly leveraged DeFi position without a liquidation threshold—yet carries a guaranteed erosion mechanism. Let me dismantle the structure.
First, the instrument: 2x leveraged ETF (likely 072660.KS or a similar product). This is not a spot position. Every day, the ETF rebalances to maintain 2x daily return. In a volatile market—precisely the environment Butan is buying into—the net asset value decays due to variance drag. If SK Hynix stock goes up 1% one day and down 1% the next, the stock returns roughly zero, but the 2x ETF loses approximately 0.02% per cycle due to the asymmetry of leveraged compounding. Over weeks of sideways movement, the decay compounds. The ETF is a negative-sum game over time, absent a strong directional trend. Butan is betting that the trend will resume immediately. That is a short-term tactical bet, not a long-term conviction allocation.
Second, the underlying thesis. Butan claims “AI demand is secular.” From my experience auditing DeFi protocols that integrated AI agents (2026), I learned that probabilistic models are not zero-failure systems. In semiconductor land, the same holds. SK Hynix’s HBM leadership is real, but it is not a monopoly. Samsung is ramping HBM3E; Micron is chasing. The JEDEC standard ensures interoperability. The real moat is not technology—it is the 18-month lead in advanced packaging (MR-MUF). But that lead is shrinking. Liquidity is a mirror reflecting greed: the market’s current premium on SK Hynix is a bet that Samsung will fail to qualify its HBM3E for NVIDIA’s Blackwell. If Samsung succeeds, SK Hynix’s margin compression could be abrupt and severe.
Third, the behavioral risk. Butan’s public declaration introduces a social dynamics layer. As a widely followed figure, his “all-in” move can trigger a self-reinforcing pump in the short term—but when the music stops, latecomers suffer. This is identical to the pump-and-dump mechanics in low-cap altcoins. The difference is that SK Hynix is a $100B+ company, but the leverage amplifies the same pattern. Centralization hides in plain sight metadata: the concentrated ownership of the leveraged ETF means that a few whales (including Butan) can influence the daily price. If retail flows in, the exit liquidity is provided by the same hands.
Fourth, the blind spot. Butan’s analysis completely ignores geopolitical tail risk. SK Hynix is Korean; its advanced equipment (EUV) is subject to U.S. indirect controls. If the U.S. escalates semiconductor export curbs further, SK Hynix could lose access to the Chinese market (non-AI but still material) or face explicit restrictions on selling HBM to China’s AI sector. Precision cuts through the noise of hype—the 25% drop that Butan bought was partly a reaction to exactly such regulatory rumors. He dismissed them as “short-term noise.” But from a security perspective, regulatory risk is not noise; it is a systemic vulnerability.
Contrarian — What the Bulls Got Right
To be fair to Butan, the underlying demand for HBM is undeniable. NVIDIA’s next-generation GPU B200 will require twice the HBM capacity of H100. Even if Samsung captures 30% market share by 2026, SK Hynix will still ship record volumes. The company’s forward P/E is below 15 if one assumes normalized AI-driven profits. The traditional DRAM cycle is being supplanted by structural growth. Butan is right that the SK Hynix narrative is not broken—only the entry timing was aggressive.
Furthermore, the use of leveraged ETFs is not inherently flawed. In a strong trend, such instruments massively outperform. Since early 2024, the SK Hynix 2x ETF gained roughly 400%. The problem is survivorship bias: the trend was exceptional. The current environment has lower momentum and higher cross-asset correlation. The bull case depends on NVIDIA’s earnings staying stellar and Blackwell ramping without delays. That probability, while above 50%, leaves a 40% chance of loss.
Takeaway — Accountability Call
Butan’s move is a powerful case study in how narratives—AI, semiconductor, leverage—intersect with raw market mechanics. For crypto natives, it mirrors the Luna collapse in miniature: a confident bet on a seemingly unbreakable peg (here, the “AI demand peg”) that ignores tail probabilities. Silence is the sound of exploited flaws—in this case, the flaw is the assumption that past performance justifies current leverage. My take: the trade works only if the V-shaped recovery materializes within two weeks. If it takes two months, the decay alone will erode 5-10% of the NAV, even if the stock recovers. That is the cold math. Code does not bleed—but volatility does.