Pickle Finance (PICKLE) is a multi-chain yield aggregator protocol that originated in September 2020 as one of DeFi Summer’s early entrants — offering Pickle Jars (automated strategy vaults that compound rewards for Curve, Sushiswap, and Uniswap LP positions) alongside a stablecoin peg-stabilization mechanism (Pickle Farms that incentivized buying discounted stablecoins like DAI when off-peg) — notable for suffering a $19.7 million exploit of its DAI Pickle Jar in November 2020 via a “evil jar” attack exploiting custom swap integration logic, after which Pickle merged with Yearn Finance’s growing ecosystem and rebuilt as a multi-chain yield aggregator operating on Ethereum, Polygon, Arbitrum, and other EVM chains.
| Stat | Value |
|---|---|
| Ticker | PICKLE |
| Price | $0.02 |
| Market Cap | $43,848 |
| 24h Change | +1.0% |
| Circulating Supply | 1.81M PICKLE |
| All-Time High | $85.24 |
| Contract (Ethereum) | 0x4298...1ca5 |
| Contract (Aurora) | 0x291c...2c66 |
| Contract (Polygon Pos) | 0x2b88...15da |
| Contract (Arbitrum One) | 0x9657...5b1a |
How It Works
- Pickle Jars — Automated vaults where users deposit LP tokens (from Curve, Uniswap, SushiSwap, etc.) and the jar strategy automatically claims farming rewards, sells them for more of the underlying LP asset, and re-deposits — compounding yield without user action. Each jar runs a specific strategy contract.
- PICKLE farming — Liquidity providers in selected pools earn PICKLE token emissions as additional yield on top of base LP fees.
- pJars (post-2021) — After the hack and Yearn merger, Pickle rebuilt its Jar framework using Yearn’s standardized vault design with additional customizations for multi-chain deployments.
- Stablecoin stabilization (original mechanism) — Pickle originally also rewarded users for helping bring off-peg stablecoins (DAI, USDC, USDT, sUSD) back to their peg. When DAI traded below $1, PICKLE incentivized buying DAI; when above, incentivized selling. This mechanism was separate from the jars.
- PickleJar strategy development — Community developers can propose new jar strategies. Selected strategies are funded and receive PICKLE emissions to attract deposits.
- Multi-chain expansion — Post-2022, Pickle Jars expanded to Arbitrum, Optimism, Polygon, and other EVM chains. On Arbitrum, Pickle runs strategies for GMX GLP, Curve, and other yield sources.
Tokenomics
| Parameter | Description |
|---|---|
| Ticker | PICKLE |
| Chain | Ethereum (ERC-20) + cross-chain strategies |
| Max Supply | No hard cap (inflationary emissions, gradually decreasing) |
| Ethereum contract | 0x429881672B9AE42b8EbA0E26cD9C73711b891Ca5 |
| Emissions | Distributed to Jar depositors and PICKLE/ETH LP stakers |
| Fee | Performance fee on jar yield (split: treasury + strategist + PICKLE burn/buybacks) |
Use Cases
- Automated yield compounding — Deposit LP tokens; jars compound rewards daily without user gas cost.
- PICKLE farming — Earn PICKLE rewards for providing liquidity in selected strategies.
- Multi-chain yield — Access yield strategies across Arbitrum, Polygon, Optimism, and Ethereum.
History
- 2020-09-11 — Pickle Finance launches on Ethereum at the height of DeFi Summer. The protocol immediately attracts hundreds of millions in TVL by offering jar strategies for major Curve and Uniswap pools, plus PICKLE token farming rewards. An anonymous team deploys the protocol.
- 2020-09 — Pickle reaches approximately $500 million in TVL within weeks of launch. The stablecoin stabilization mechanism is novel but complex. PICKLE token is distributed via farming, no pre-mine or public sale.
- 2020-11-21 — An attacker exploits Pickle Finance’s StrategyYearnCrvSABT jar contract via an “evil jar” attack. The attacker creates a malicious fake jar contract, exploits a cross-jar function that trusts any jar’s reported balances, and drains 19.7 million DAI from the pDAI jar. The attack relies on the protocol not validating that the interacting jar is a legitimate Pickle jar.
- 2020-11 — The Pickle core team discloses the hack. Pickle Jar strategies are paused. Security firm Haechi Audit and others analyze the exploit. No compensation fund is established for the $19.7M loss — a significant controversy given the scale.
- 2020-11-24 — Pickle Finance and Yearn Finance announce a strategic collaboration. Yearn’s Andre Cronje integrates Pickle’s jar architecture into Yearn’s expanding ecosystem. Yearn developers aid in rebuilding Pickle’s strategy contracts with improved security. The “DeFi Voltron” announcement (multiple protocols merging into Yearn’s orbit) occurs around this time.
- 2021 — Pickle relaunches with rebuilt Jars under the Yearn collaboration. New strategies are audited more carefully. TVL recovers partially. Pickle operates with less visibility as standalone-protocol DeFi attention moves to Curve Wars and LSD protocols.
- 2022–2024 — Pickle expands to Arbitrum and other L2s with GMX GLP strategies and other multi-chain yield products. The protocol is operational but operates at a fraction of its 2020 peak TVL. The Yearn collaboration persists as an informal code-sharing relationship rather than a formal merger.
Common Misconceptions
“Pickle Finance is part of Yearn Finance.”
Pickle and Yearn collaborated following the 2020 hack, sharing code and technical resources. They are separate protocols with separate governance tokens (PICKLE vs. YFI). Pickle operates independently with its own governance.
“The evil jar attack was a reentrancy exploit.”
The Pickle hack was not a reentrancy attack. It was a logic vulnerability where the protocol trusted any address that claimed to be a Pickle Jar without verification. The attacker deployed a malicious contract mimicking a jar’s interface, then called a Pickle function that trusted the malicious jar’s reported balance — draining the genuine jar.
Social Media Sentiment
Pickle Finance has a loyal niche community of yield farmers who appreciate its multi-chain jar strategies. The 2020 hack remains a defining moment; the protocol recovered but never recaptured its initial TVL scale. The Yearn collaboration is cited as a rare positive outcome from a major DeFi hack — instead of shutting down, Pickle rebuilt with stronger engineering support. PICKLE token has limited speculative appeal and is primarily held by yield strategy participants.
Last updated: 2026-04