GM. This is Dumb Money — the only financial newsletter with a 100% loss rate.
Today we've got a retail trader in Seoul who thought a 2x leveraged chip ETF wasn't leveraged enough. So he added margin on top of it.
We've also got a short seller who picked a fight with Hertz right before earnings, and a DeFi depositor who got outvoted by an attacker who read the governance docs.
$324K in combined losses. Three accounts. Zero lessons retained.
Here's what we've got today:
🏆 A 2x leveraged ETF. On margin. During a chip crash. From Seoul.: $214,
📉 Shorting Hertz into earnings. 31% short interest. Bold strategy.: $67,500
⚡ A governance vote that drained $8.5M. It wasn't actually a vote.: $41,8
📊 The data on today's carnage. It is worse than you think.
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| TODAY'S DAMAGE REPORT 📊 | |||||||||
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LOSS OF THE DAY 🏆
Every day we crown one person who made the worst financial decision on the internet.
Today's winner went double or nothing. Then double again.
Here's the setup. A retail trader in Seoul discovered leveraged single-stock ETFs during the AI chip rally. Specifically, a 2x leveraged SK Hynix fund that tracked the memory giant's daily moves at twice the magnitude.
The fund was up 140% in three months. Every finance influencer in Korea was posting screenshots. The thesis was simple: AI needs memory chips.
One problem: 2x leverage wasn't enough for u/hynix_bull_kr.
He bought ₩280 million of the ETF. On margin. Leverage stacked on top of leverage.
For context: at that point, a 15% drop in SK Hynix would translate to a 30% ETF drop, which on margin would wipe his entire position.
SK Hynix fell 35% over the past month. The ETF fell 82% from its peak. His margin call came on a Tuesday morning. He was at work.
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His broker sent a collections notice before he finished his morning coffee.
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Top comment: "Leverage on leverage is not a strategy. It is a cry for help."
Quick math on leveraged ETFs for non-degenerate people: a 2x leveraged single-stock ETF moves twice as much as the underlying stock every day. A 35% stock decline becomes roughly an 82% ETF decline once daily compounding kicks in. Now add margin on top of that, and a normal correction becomes a total wipeout. Korean retail investors lost an estimated $38.7 billion on leveraged ETFs during the recent slump.
The ETF is still trading. He is not.
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TODAY'S CASUALTIES 💀
Not everybody can be Loss of the Day. But these two gave it a real shot. Let's run through the tape.
Casualty #1: The Hertz Short Seller
There's a rule in trading that everyone knows and nobody follows: don't short the most heavily shorted stock into an earnings report.
u/bear_thesis_capital shorted 45,000 shares of Hertz at $1.51. The company was bleeding money. The stock was a dollar fifty. It felt like free money.
One problem: 31.2% of the float was already short. Days to cover was 3.9. The spring was coiled.
Hertz reported Q2 earnings on August 6. Revenue: $2.4 billion, beating estimates. They posted a $64 million profit. The stock popped 30% in one session and kept running.
He held through the squeeze. Covered at $3.01. Total loss: $67,500.
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The company he called dead is now up 99% from his entry. He is not calling it anything anymore.
Short selling for people who haven't tried it: when you short a stock, you borrow shares and sell them, hoping to buy them back cheaper. If the stock goes up instead, your losses are theoretically unlimited. A stock can only fall to zero, but it can rise forever. Shorting a stock with 31% short interest into an earnings report is handing the market a loaded spring.
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Casualty #2: The Governance Voter
This one's different. No leverage. No memecoins. Just a DeFi protocol, a governance system, and an attacker who read the documentation better than anyone else.
u/yield_chaser_eth deposited $41,800 into Term Finance vaults on Ethereum. Fixed-rate lending. Audited smart contracts. The boring kind of DeFi.
Here's the thing. The protocol's governance allowed anyone with enough voting power to redirect vault funds. A seven-day delay and veto mechanism were supposed to prevent this.
An attacker quietly accumulated supermajority voting power over several days. On August 23, they voted to drain 2,843 ETH and 1.68 million USDC from the vaults.
Total protocol loss: $8.5 million, drained into a single attacker wallet. Our guy's share: $41,800. Gone.
Not rugged. Not hacked. Governed away.
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The smart contracts worked exactly as designed. Someone just designed a better attack than the designers designed a defense.
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TODAY BY THE NUMBERS 📊
We track the data because the data is funnier than anything we could make up.
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The correlation between confidence and catastrophe remains undefeated.
We've been tracking it for months. Every time someone types "it can't go lower" into a comment section, it goes lower. More reliable than any technical indicator on the market.
See you tomorrow. The numbers will be different. The behavior won't be.
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