Financial term for an investment position intended to offset potential losses.
He bought futures to hedge against exchange rate risk.
I bought futures to hedge against exchange rate risk.
I put a hedge in place in case the stock price falls.
When the market crashed, that hedge worked very well.
ヘッジ is the financial risk-offsetting term, while ヘッジホッグ simply means 'hedgehog' the animal, and the two are easily confused by sound alone.
Borrowed from English 'hedge'.