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# Cover 50% off

Cover "halved the price"

### Introduction

Cover 50% Off is a kind of bearish insurance to prevent "underwater". The Policy holder can pay premium to insure their bearish assets at a very small cost. The Policy holder will get profits when the value of the Token insured before the expiration date is lower than "half" of the price at the time of issuance.
If the spot price is not less than the policy price at the end of expiration date. the Policy supplier can steadily obtain the premium as interest .
Bearish insurance can be used for policy holders to prevent 'deep underwater' or for preventing position losses caused by significant price depreciation during liquidity mining.

### Insurance Parameters

Expiration Date: 14 natural days after the date of issue.
Policy Price: halve the price of the index at the time of insurance.
Denominated Asset: BNB (BNB is usually used as the denominated asset for insurance policy on helmet.insure unless otherwise specified)
Underlying Assets: Part of emerging assets on BSC

### How to calculate Policy Supplier's returns by supplying Cover 50% Off policy?

Formula to calculate returns of policy supplier
$Min(currentprice-policyprice,0)+premium$
When the policy price < current price, the policy supplier can obtain premiums without risk,‌
When the policy price > current price, a hedging instrument or other means is required to hedge the risk and obtain stable interest.

### How to calculate Policy holder's returns by buying Cover 50% Off policy?

Formula to calculate returns of policy holder
$Max(policy price-current price ,0) - premium$
The maximum loss of the policy holder is just premium, while there is no cap on the gain. The profit is made if_
$policy price-current price of the insured underlying> premium.$