Rank #5114
On 3,611 watchlists

Siren Price (SI)


0.00001245 BTC10.28%

0.0001466 ETH11.12%

SI  Siren SI
Market Cap
- -

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Market Cap / TVL Ratio
Fully Diluted Market Cap
Total Value Locked (TVL)
Volume / Market Cap
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Siren to USD Chart

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SI Price Live Data

The live Siren price today is $0.645713 USD with a 24-hour trading volume of $33,645.43 USD. We update our SI to USD price in real-time. Siren is down 4.77% in the last 24 hours. The current CoinMarketCap ranking is #5114, with a live market cap of not available. The circulating supply is not available and a max. supply of 100,000,000 SI coins.


Options are a financial primitive from which one can build many different more complex financial instruments. At their core, options give a trader the choice to buy or sell an asset at a predetermined price at a known time in the future. This is useful for protecting one's self (also known as hedging) against possible price changes in the asset, as well as speculating on these price changes.

Core Protocol Mechanics

SIREN uses a fully-collateralized approach to writing options that doesn’t require any oracles to function. A single MarketsRegistry contract creates and coordinates individual markets. Once a Market contract is created anyone can interact with it in a permissionless manner. The solvency of a position is ensured at all times by the collateral locked in the smart contract.

With SIREN, both the long and short side of the contract are tokenized. The buyer’s side (bToken) gives the holder the right to purchase or sell the underlying asset at a predetermined strike priceThe seller’s/writer’s side (wToken) allows the holder to withdraw the collateral (if the option was not exercised) or withdraw the exercise payment (if the option was exercised) from the contract after expiration.

When a trader buys a put the on-chain token amount is multiplied by the strike. For example, a 1 WBTC $20K PUT will result in 20,000 bTokens. For the same reason, a put is just a reversed-assets call (e.g. a WBTC/USDC put is actually a USDC/WBTC call).​

Tokenizing both sides of the contract allows SIREN to create secondary markets for both the long and short exposure. Under such a design in order to become a writer one purchases a wToken from the SirenSwap AMM (see below). A writer can also unwind their short exposure by selling the wToken back to the AMM. This streamlines the write-side mechanics by reducing it to essentially purchasing the underlying collateral at discount — as opposed to a typical design where the writer mints long tokens and has to then sell them in order to realize the premium.

SirenSwap AMM

Bootstrapping liquidity is core to creating a thriving market. Options are notoriously difficult when it comes to that. Not only does liquidity get fractured by combination of strike prices and expirations, it also requires sophistication on the part of liquidity providers in order to ensure fair and sustainable pricing.

To ensure liquidity on day 1 the SIREN protocol utilizes a custom SirenSwap AMM that uses a novel combination of a constant-product bonding curve and options minting to trade both bTokens and wTokens. Notably, the AMM doesn’t require any asset in the pool other than bTokens/wTokens in order to trade them against the collateral asset (e.g. WBTC). This increases LP capital efficiency and provides other benefits that we’ll expand on in further posts.

The SIREN core team believes that in these early days of Ethereum and DeFi less is more, so they designed SirenSwap to be a model-less market maker. This means there is no complex on-chain pricing formula nor oracle feed required in order for it to function. This makes it easy for anyone to become an LP to potentially earn trading fees."

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SI Price Statistics

Siren Price Today
Siren Price$0.6457
Price Change24h$-0.03234
24h Low / 24h High
$0.6352 /
Trading Volume24h$33,645.43
Volume / Market CapNo Data
Market DominanceNo Data
Market Rank#5114
Total Value Locked (TVL)$2,992,418
Siren Market Cap
Market CapNo Data
Fully Diluted Market Cap$64,571,280.78
Siren Price Yesterday
Yesterday's Low / High
$0.6375 /
Yesterday's Open / Close
$0.6952 /
Yesterday's Change


Yesterday's Volume$43,344.49
Siren Price History
7d Low / 7d High
$0.6353 /
30d Low / 30d High
$0.3658 /
90d Low / 90d High
$0.3234 /
52 Week Low / 52 Week High
$0.3234 /
All Time High
Mar 06, 2021 (9 months ago)
All Time Low
Nov 02, 2021 (a month ago)
Siren ROI
No Data
Siren Supply
Circulating SupplyNo Data
Total Supply100,000,000 SI
Max Supply100,000,000 SI