---
title: "Siren (SI) price, heat score and market data"
symbol: "SI"
name: "Siren"
coingecko_id: "siren"
canonical: https://crypheat.com/c/siren.html
robots: index, follow
heat_score: "12"
heat_band: "COLD"
market_cap_rank: "6509"
price_as_of: "2026-08-14"
last_updated: "2026-08-14"
source: "CoinGecko / DefiLlama / alternative.me"
tier: free
disclaimer: "Information only; not investment advice or a recommendation to trade"
---

# Siren (SI)

Siren (SI) trades at $0.00294986, down 15.6% over the past 30 days. Its market cap — supply times price — is $158,797, the 6509-largest in crypto. Over a year it is -62% (down), and it sits -100% from its all-time high. On tradability, the book is thin, so incoming money moves the price easily. Taken together, the overall heat score is 12 (COLD). A higher number means more of the conditions for a rally are in place — it is not a price forecast.

Last updated 2026-08-14 · Price $0.00294986 (as of 2026-08-14)

Heat score: **12** (COLD) — a deterministic 0–100 read on how many of the conditions for a move are in place. Not a price forecast.

## Market data (as of 2026-08-14)

| Metric | Value |
| --- | --- |
| Price | $0.00294986 |
| Market cap | $158,797 (rank #6509) |
| 24h volume | $22 |
| Circulating supply | 53,832,218 SI (about 54% of total supply) |
| Total supply | 100,000,000 SI |
| Change from all-time high | -99.9% |

## What is Siren

SIREN is a distributed protocol for creating, trading, and redeeming fully-collateralized options contracts for any ERC-20 token on Ethereum.

About SIREN
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.

## Frequently asked questions

### What is Siren (SI)?

SIREN is a distributed protocol for creating, trading, and redeeming fully-collateralized options contracts for any ERC-20 token on Ethereum. Read more →

### What is the current price of Siren (SI)?

$0.00294986 as of 2026-08-14. The price moves daily, and this page is rebuilt every day.

### What is the market cap of Siren (SI)?

About $158,797 as of 2026-08-14, which ranks #6509 across all crypto assets.

### What is Siren's heat score, and what does it mean?

The heat score is 12 (COLD) as of 2026-08-14. It is our own 0–100 measure of how many of the conditions a rally needs — momentum, tradable volume, light supply and a supportive market — are currently in place. It is not a price forecast. The model multiplies its factors, so a single missing condition holds the whole score down.

### What is the supply of Siren (SI)?

As of 2026-08-14, 53,832,218 SI is in circulation out of a total supply of 100,000,000 SI — about 54%. The remainder may reach the market through future unlocks.

### What is the all-time high for Siren (SI)?

The all-time high on record as of 2026-08-14 is $4.37.The price is $0.00294986 today, -99.9% from that high.

### How much Siren (SI) can I buy with $100?

At the 2026-08-14 price ($0.00294986), $100 buys roughly 33,899.91 SI before fees and spread. Crypto is divisible, so you do not need to buy a whole coin.

### Will Siren (SI) go up? What are its prospects?

We do not forecast prices or give investment advice. What this page does is track Siren every day through factual data — the heat score, supply structure, charts and development activity. Use it as material for your own judgement; the decision is yours.

### Where can I buy or trade Siren (SI)?

It trades on major crypto exchanges. Which venues you can use depends on where you live, so check what is licensed in your own jurisdiction. This is information, not a recommendation of any asset or exchange.

---

Sources: CoinGecko (data provided by CoinGecko), DefiLlama and alternative.me. Figures are as of 2026-08-14 and change daily. Information only; not investment advice or a recommendation to trade.
HTML version: https://crypheat.com/c/siren.html