Why Waiting for Leveraged Index Futures to Recover Can Fail
Summary
The document examines the argument that a trader with enough capital to meet margin calls can hold a leveraged stock-index futures position through a severe decline and eventually recover when the market rebounds. The replies challenge the assumption that eventual recovery makes the trade economically safe. A long recovery period ties up capital, exposes it to inflation or discounting, and creates opportunity costs compared with other investments.
The answers also identify a more fundamental risk: markets do not guarantee recovery. Historical exchanges have experienced major interruptions or disappeared, so conclusions drawn from surviving markets can suffer from survivorship bias. The discussion is qualitative; it does not quantify margin requirements, futures contract mechanics, recovery probabilities, or expected returns. Its central lesson is that leverage, time to recovery, capital use, and the possibility of permanent loss all matter when evaluating a hold-through-the-crash strategy.
Key ideas
- Meeting margin calls does not ensure that a leveraged futures position will eventually recover.
- A long recovery period imposes opportunity costs and reduces the present value of eventual gains.
- A market or exchange may fail to recover, and studies of surviving markets can conceal this risk through survivorship bias.
- The discussion identifies risks but does not provide a quantitative model of futures losses or recovery odds.
Tags
Full text
# What is wrong with this argument? # What is wrong with this argument? Futures trading in stock index gives leverage. Leverage cuts both ways. It can give you huge pct gains or wipe you out. Typically stock index futures for the major markets have limited daily pct change to upside but to downside there could be huge pct changes. 20 pct sp500 lost in 87 crash. Around 11pct highest daily gain. We see negative skew. So there is bigger downside risk. If one has enough capital to make margin calls can they ride out a huge daily decline ? Just hold on long enough and market will eventually recover. It may take 15 years like for Nasdaq but eventually will. So the loss is eventually made up and you do not go bankrupt. Note that upside risk is different story as there is no guarantee market will return to lower level. What is wrong with this logic ? ## Answer by arodrisa (score 2) https://quant.stackexchange.com/a/21309 I think that the key is with youe last comment: `Note that upside risk is different story as there is no guarantee market will return to lower level.` You don't know if it will recover when you have a bull or bear market. In the other hand, let's say that it takes 15 years to recover to the actual value. Is it worth the same $100 15 years ago, and nowadays? As you know it isn't, so you have lost money. In addition, there is the value of opportunity and so on.... ## Answer by Brian B (score 1) https://quant.stackexchange.com/a/21315 A market does not always come back. According to Brown, Goetzmann and Ross, half the stock exchanges in existence in year 1900 had significant interruptions or were completely abolished. Beware of survivorship bias! ## Answer by Saar Daae (score 0) https://quant.stackexchange.com/a/21305 Basically， based on your assumptions, your logic is correct. However, it's a kind of waste for your money. During the bear market, you still have opportunities to gain at least risk-free return. But if you just put that money in the margin account, you cannot get that profit. This is what we call "opportunity cost". So in bear market, it's perhaps a better choice to end the long position and invest your money on other assets or simply take a short position. ## Answer by SmallChess (score 0) https://quant.stackexchange.com/a/21317 Your logic is incorrect because it doesn't make best use of the capital. What if the stock never come back up? Even it does, do you really want to tie your funds in something that you don't know when you can get back? Mathematically, your problem can be modelled by a discount factor. Your money in 15 years will be eaten by the discount factor badly.
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