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How to Use Siren for DeFi Trading

Satish Chand Gupta By Satish Chand Gupta
9 Min Read

Key Highlights

  • Siren Protocol launched its V1 mainnet in March 2021 on the Ethereum blockchain, introducing decentralized options trading.
  • The V2 upgrade, deployed in Q4 2021, introduced an automated market maker (AMM) model, improving capital efficiency for liquidity providers by over 30%.
  • Siren’s total value locked (TVL) peaked near $20 million in early 2022, supporting options contracts across assets like wrapped Bitcoin (wBTC) and Ether (ETH).
  • Users can trade options with specific strike prices and expiry dates, such as ETH puts at a $2,000 strike expiring December 31, 2024.
  • Liquidity providers earn trading fees, with some pools generating annualized yields exceeding 15% during periods of heightened market volatility.

Understanding how to use Siren for DeFi trading unlocks sophisticated strategies beyond simple spot buying or selling. Siren Protocol offers a decentralized options market, allowing users to hedge positions, speculate on price movements, and earn yield as a liquidity provider. This guide details Siren’s unique approach to options, providing a step by step walkthrough for both traders and liquidity providers looking to navigate this powerful platform.

Siren Protocol: Decentralized Options Demystified

Siren Protocol stands as a non custodial, decentralized platform for trading options. Unlike centralized exchanges, Siren operates entirely on smart contracts, giving users complete control over their assets. It offers a crucial tool for those seeking to manage risk or capitalize on market volatility without relying on intermediaries.

The core innovation within Siren lies in its automated market maker (AMM) design for options. Instead of an order book, Siren uses liquidity pools where users can buy and sell options against pooled collateral. This model aims to provide continuous liquidity and reduce slippage for traders, distinguishing it from early decentralized options protocols that struggled with liquidity depth.

Siren facilitates the creation and trading of both call and put options. A call option gives the holder the right, but not the obligation, to buy an underlying asset at a specified price (the strike price) before a certain date (the expiry). A put option grants the right to sell. These instruments are fundamental for advanced financial strategies.

A key aspect of Siren’s design involves “B tokens” and “W tokens.” When an option is created, it is split into these two components. B tokens represent the buyer’s side of the option, granting them the right to exercise. W tokens represent the writer’s side, obligating them to fulfill the option if exercised, while also entitling them to the premium paid by the buyer. This tokenized approach simplifies the management of options positions.

Getting Started with Siren: Wallet Connection and Funding

The first step to use Siren for DeFi trading involves connecting your cryptocurrency wallet. Siren primarily operates on the Ethereum mainnet and Polygon network. MetaMask is the most widely supported wallet, but other WalletConnect compatible options also work seamlessly. Navigate to the Siren Protocol website and locate the “Connect Wallet” button, usually found in the top right corner.

Once connected, ensure your wallet holds the necessary funds. Options trading on Siren typically requires collateral in stablecoins such as USDC or the underlying asset itself, like wBTC or ETH. If you are on Polygon, you will also need a small amount of MATIC for transaction fees. Transfer your desired assets to the connected wallet address on the appropriate network.

The Siren interface is designed for clarity, though options trading itself carries inherent complexity. You will find sections for “Trade,” “Pools,” and “Portfolio.” Spend some time familiarizing yourself with the layout. The “Trade” section is where you will select specific options contracts, while “Pools” is for liquidity providers. “Portfolio” tracks your active positions and liquidity contributions.

Before making any trades, it is wise to review the available markets. Siren lists options for various assets, each with different strike prices and expiry dates. Understanding these parameters is critical for making informed decisions. Check the current market prices and implied volatility for the options you are considering.

Buying and Selling Options: A Trader’s Guide

To begin trading options on Siren, navigate to the “Trade” section. Here, you will see a list of available options contracts. Each contract specifies the underlying asset (e.g., ETH, wBTC), the option type (Call or Put), the strike price (the price at which the option can be exercised), and the expiry date. For example, you might see “ETH Call $3,000 December 31, 2024.”

When you decide to buy an option, you are purchasing B tokens. These B tokens represent your right to exercise the option. Select the specific option contract you wish to trade. The interface will display the current price for that option, often denominated in USDC. Input the quantity of options you want to buy, and the system will calculate the total cost, including any network fees.

After confirming the details, execute the transaction through your connected wallet. Once the transaction is confirmed on the blockchain, the B tokens will appear in your wallet and on your Siren “Portfolio” page. You now hold the right to exercise that option. You can hold the option until expiry, sell it before expiry to realize profits or cut losses, or exercise it if it is in the money.

Exercising an option on Siren means you fulfill the terms of the contract. For a call option, you would pay the strike price to receive the underlying asset. For a put option, you would sell the underlying asset at the strike price. This action converts your B tokens into the underlying asset or collateral. Be aware of the gas fees associated with exercising options, especially on Ethereum mainnet.

Providing Liquidity on Siren: Earning Fees as an LP

Beyond trading options, Siren also allows users to act as liquidity providers (LPs). This involves supplying collateral to the AMM pools, effectively becoming an option writer. When you provide liquidity, you are minting W tokens, which obligate you to fulfill the option if it is exercised. In return, LPs earn a share of the trading fees generated by option buyers.

To become an LP, go to the “Pools” section of the Siren interface. You will see various pools corresponding to different options contracts. Each pool requires specific collateral. For instance, an ETH call option pool might require USDC as collateral, while an ETH put option pool might require ETH. Choose a pool based on your available assets and your market outlook.

When you deposit collateral into a pool, you receive LP tokens representing your share of that pool. These LP tokens accrue fees from every option trade within

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Satish Chand Gupta is the founder and editor-in-chief of The Central Bulletin. He has tracked cryptocurrency markets, on-chain data, and Web3 infrastructure since the early DeFi era, with a focus on original analysis grounded in verifiable data. Satish writes on Bitcoin macro cycles, ETF flows, miner economics, and the intersection of global finance with decentralised technology. He created TCB's proprietary data suite: the Miner Stress Score, DeFi Pulse Index, and ETF Absorption tracker, each updated daily from primary on-chain and market data sources. His reporting closely follows Bitcoin ETF developments, institutional adoption trends, and regulatory shifts across the US, EU, and Asia. Every article published at TCB is independently researched and held to strict E-E-A-T standards.