Ask about Siren · freeSiren(SI)
Total Value Locked$475,333
TVL by Chain
Ethereum$439,012
Polygon$32,244
Arbitrum$4,077
Key Metrics
Market Cap$185,098
$SI Price$0.0028
Fully Diluted Valuation$276,853
$SI Volume 24h$1.28
CEX Volume$0
DEX Volume$1.28(100% of total)
Total Raised$5.2m
Dec 1, 2020$1.2mRound: Seed
Mar 1, 2021$4mRound: SeedInvestors: 1kx, CMS Holdings, Edward Moncada, Jack Herrick, Mechanism Capital, Naval Ravikant, Robert Leshner, Rockaway Blockchain Fund, Santiago Roel Santos, Tarun Chitra, The Spartan Group
Protocol Information
Decentralized option markets on Ethereum.
Audits:
Methodology
TVL: Total value of all coins held in the smart contracts of the protocolView code on GitHubHacks
Date: Sep 3, 2021
Amount: $3.5m
Classification: Reentrancy
Technique: Reentrancy
Chains: Polygon
Language: Solidity
Target Type: DeFi Protocol
Competitors
Siren history
TVL is the default DefiLlama definition. Daily values are UTC snapshots from Nov 18, 2020 to Oct 20, 2026.
All-time high TVL: $23.22m on Mar 15, 2021. All-time low TVL: $998 on Nov 18, 2020.
Daily TVL, Sep 21, 2026 to Oct 20, 2026
| Date | TVL |
|---|---|
| Sep 21, 2026 | $538,721 |
| Sep 22, 2026 | $549,735 |
| Sep 23, 2026 | $609,795 |
| Sep 24, 2026 | $561,642 |
| Sep 25, 2026 | $557,216 |
| Sep 26, 2026 | $581,992 |
| Sep 27, 2026 | $584,141 |
| Sep 28, 2026 | $580,276 |
| Sep 29, 2026 | $539,523 |
| Sep 30, 2026 | $542,595 |
| Oct 1, 2026 | $545,810 |
| Oct 2, 2026 | $549,229 |
| Oct 3, 2026 | $548,209 |
| Oct 4, 2026 | $553,224 |
| Oct 5, 2026 | $554,304 |
| Oct 6, 2026 | $554,777 |
| Oct 7, 2026 | $528,650 |
| Oct 8, 2026 | $498,098 |
| Oct 9, 2026 | $461,486 |
| Oct 10, 2026 | $469,341 |
| Oct 11, 2026 | $481,925 |
| Oct 12, 2026 | $488,725 |
| Oct 13, 2026 | $444,734 |
| Oct 14, 2026 | $484,692 |
| Oct 15, 2026 | $461,140 |
| Oct 16, 2026 | $473,757 |
| Oct 17, 2026 | $467,972 |
| Oct 18, 2026 | $461,886 |
| Oct 19, 2026 | $462,715 |
| Oct 20, 2026 | $464,932 |
TVL at each month end, Nov 2024 to Oct 2026
| Date | TVL |
|---|---|
| Nov 30, 2024 | $961,632 |
| Dec 31, 2024 | $1.01m |
| Jan 31, 2025 | $943,388 |
| Feb 28, 2025 | $759,683 |
| Mar 31, 2025 | $656,011 |
| Apr 30, 2025 | $632,955 |
| May 31, 2025 | $418,434 |
| Jun 30, 2025 | $477,943 |
| Jul 31, 2025 | $616,838 |
| Aug 31, 2025 | $611,759 |
| Sep 30, 2025 | $514,447 |
| Oct 31, 2025 | $418,525 |
| Nov 30, 2025 | $417,769 |
| Dec 31, 2025 | $408,107 |
| Jan 31, 2026 | $327,395 |
| Feb 28, 2026 | $292,231 |
| Mar 31, 2026 | $280,033 |
| Apr 30, 2026 | $269,849 |
| May 31, 2026 | $260,440 |
| Jun 30, 2026 | $245,435 |
| Jul 31, 2026 | $324,482 |
| Aug 31, 2026 | $364,442 |
| Sep 30, 2026 | $542,595 |
| Oct 20, 2026 (latest) | $464,932 |
TVL at each year end, Dec 31, 2020 to Dec 31, 2025
| Date | TVL |
|---|---|
| Dec 31, 2020 | $1.19m |
| Dec 31, 2021 | $2.71m |
| Dec 31, 2022 | $478,395 |
| Dec 31, 2023 | $993,803 |
| Dec 31, 2024 | $1.01m |
| Dec 31, 2025 | $408,107 |
The .csv export on the chart above downloads every daily value. The same data is in the public API: https://api.llama.fi/protocol/siren
Frequently asked questions
What is Siren's TVL?
As of Oct 20, 2026, Siren has $475,333 in total value locked. TVL has decreased 11.7% over the past 30 days.
What chains does Siren operate on?
Siren operates on 3 chains: Ethereum, Polygon, and Arbitrum. Ethereum holds the largest share at 92.4%.
What is the SI token price and valuation?
SI is currently trading at $0.0028. Its circulating market capitalization is $185,098, ranking it #6,035. Its fully diluted valuation is $276,853. Supply currently stands at 66.86m circulating, 100m total supply, 100m maximum supply.
How has SI performed recently?
SI is down 19.7% over the past 7 days and down 26.5% over the past 30 days. Its all-time high is $4.37, reached on Mar 6, 2021. The token is currently 99.9% below that level.
How does Siren's TVL compare to similar protocols?
Among Options protocols tracked by DefiLlama, Siren ranks #12 by TVL. The category holds $213.3m across 73 protocols, and Siren accounts for 0.2% of that total. Similar protocols include SOFA.org, Pods Finance, Thetanuts Finance, Opium, Hegic, Opyn Gamma, Deri Protocol, Cega V1, Premia V2, and TYMIO.
Has Siren ever been exploited?
Siren has 1 recorded security incident. The most recent incident occurred on Sep 3, 2021 and involved $3.5m. It was classified as Reentrancy.