Leverage is using borrowed money to increase the size of an investment. It magnifies gains and losses on the money you put in, and it adds a fixed obligation that has to be paid whatever happens.
杠杆是借来的钱，用来放大投资规模。它放大自有资金的盈亏，同时增加一笔无论结果如何都必须支付的固定义务。
Leverage does not make a good investment better; it makes the outcome more extreme. Buy an asset yielding 8% with money borrowed at 5%, and your equity earns 11% — but a 2% fall in the asset's value can wipe out a fifth of your capital. That is why leveraged structures fail suddenly: the equity cushion is thin, and the lender's margin call arrives before the recovery does.
杠杆不会让一笔好投资变得更好，只会让结果更极端。用 5% 借来的钱买 8% 的资产，自有资金回报是 11%；但资产价格跌 2%，你的本金就少了五分之一。
这就是杠杆结构突然崩塌的原因：权益垫子很薄，而追加保证金的通知，总在价格回升之前到。
| Move变动 | Where it appeared出现位置 | What it means这句话在说什么 |
|---|---|---|
| — | The Bond King Says Don't Own Bonds. Look at Who Bought Them Instead. 杠杆 · 第 2 张术语卡 | A few basis points only pay if the position is repeated at fifty or a hundred times leverage. 杠杆的风险不在方向判断，而在「能不能扛住波动」。自有资本 1 亿、头寸 100 亿时，标的只要反向 1%，本金就归零——不需要判断错，只需要撑不到回本。 |
| $8.5bn | Kimberly-Clark offers bonds to help fund Tylenol maker takeover 杠杆 · 第 8 张术语卡 | Kenvue alone carries $8.5 billion of debt; the combined group has to digest it. 杠杆是并购融资的核心约束。发债前，财务团队要算清楚：并表后净债务/EBITDA 会到几倍、几年能降回目标区间、以及评级机构容忍的上限是多少。若杠杆升得太快，评级被下调，下一次发债的利差就会变贵——形成一个「越借越贵」的循环。这也解释了为什么这 49 亿美元要赶在财报静默期前定价：早一周拿到钱，就少一周市场风险。 |
| — | Why CoreWeave is in the crosshairs of the AI scare 杠杆 · 第 6 张术语卡 | Athey's warning is about leverage: it “turns a storm into a teacup into something more nefarious”, because the same assets sit in the same portfolios. 简单算一笔：资产 100 元、借 80 元、自有 20 元。资产跌 20%，自有资金归零。杠杆越高，同样的价格波动对股东的杀伤越大——这也是为什么债主总是比股东先跑。 |
| — | IMF warns that the AI boom's debt could turn a correction into a crisis 杠杆 · 第 1 张术语卡 | The IMF's core warning is not that AI is unprofitable — it is that the boom is financed with debt. Rising leverage, concentrated exposures and circular financing would magnify any correction in AI-related asset prices. 为什么监管机构盯杠杆而不盯价格？因为价格波动本身不致命，被迫平仓才致命。杠杆高的时候，价格一跌，保证金追缴就来了，投资者被迫卖出，卖出又压低价格，形成「跌→卖→更跌」的循环。IMF 这次担心 AI 就是这么一条链：企业靠发债建算力，基金靠保证金买入相关资产，一旦回调，卖压会被杠杆放大。看杠杆有两个实用指标：债务 / 息税折旧摊销前利润（Debt / EBITDA），以及保证金余额占 GDP 的比重 —— 报告里对冲基金股票保证金已达发达经济体 GDP 的约 15%。 |
Leverage raises returns
It raises the spread on equity, and the volatility of that equity.
High leverage is always reckless
It depends on asset volatility and cash flow stability.
Leverage is only debt
Operating leverage — fixed costs — works the same way.
· highly leveraged
· leverage ratio
· deleveraging
· margin call
· leveraged buyout
highly leveraged 高杠杆；leverage ratio 杠杆率；deleveraging 去杠杆；margin call 追加保证金；leveraged buyout 杠杆收购。
· financial vs operating leverage
· gross vs net leverage
financial leverage 是债务杠杆，operating leverage 是固定成本杠杆；gross leverage 用总债务，net leverage 扣现金。
The company is levered at X times EBITDA, up from Y times after the acquisition.
财报句：公司杠杆为 EBITDA 的 X 倍，收购后从 Y 倍升上来——up from 表变化。
“A few basis points only pay if the position is repeated at fifty or a hundred times leverage.”
“Kenvue alone carries $8.5 billion of debt; the combined group has to digest it.”
“Athey's warning is about leverage: it “turns a storm into a teacup into something more nefarious”, because th…”
“The IMF's core warning is not that AI is unprofitable — it is that the boom is financed with debt. Rising lev…”