thefin

Long & Short

Long means buying an asset expecting price to rise; short means selling (borrowing and selling) expecting price to fall.

What is Long and Short?

Long (做多): Buying an asset with the expectation that its price will increase. You profit when the price goes up.

Short (做空): Selling an asset you don't own (borrowed) with the expectation that its price will decrease. You profit when the price goes down.

How They Work

Long Position

  1. Buy BTC at $100,000
  2. Price rises to $110,000
  3. Sell for $10,000 profit (10%)

Short Position

  1. Borrow and sell BTC at $100,000
  2. Price falls to $90,000
  3. Buy back and return BTC for $10,000 profit (10%)

Key Differences

AspectLongShort
Profit whenPrice risesPrice falls
Max profitUnlimitedLimited (price can only go to 0)
Max loss100% of investmentUnlimited (price can rise infinitely)
Funding ratePay when positiveReceive when positive

Market Sentiment Indicators

  • Long/Short Ratio: Shows market positioning bias
  • High long ratio: Market is bullish, potential for long squeeze
  • High short ratio: Market is bearish, potential for short squeeze

Risk Considerations

Shorting carries unique risks:

  • Unlimited loss potential
  • Borrowing fees
  • Short squeezes can cause rapid losses
  • Timing is critical (markets tend to rise over time)