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@brownfiamm 正在把 DeFi 里的 AMM 变成专业做市商
传统做市商,最重要的防坑工具就是买卖价差,用来保护提供流动性的 LP 不被薅羊毛💸
但现在大部分 DeFi AMM 里,价差基本等于 0,bid 和 ask 挤在同一点上,LP 基本在裸奔,很容易亏✖️
BrownFi V3 做了个动态价差系统,根据真实市场信号自动调整买卖价差,根据不同市场情况调整策略,帮 LP 少亏钱、多赚钱:
⏩市场很平静,低波动的时候:
▪️缩小价差,让大家觉得交易便宜,交易量上来,LP 就能赚更多手续费
⏩市场暴跌,大家都在狂卖的时候:
▪️把买价往下拉宽,保护 LP 不被砸得太惨
▪️把卖价收窄,吸引买家进来,把池子里的资产快速平衡掉
⏩市场狂涨、大家开始疯狂买的时候:
▪️把卖价拉宽,让买家多付点钱,买得慢一点,别把池子里的 base 资产一下子抽干
▪️把买价收窄,鼓励卖家进来补货,把池子重新平衡好,防止 LP 单边持仓亏太多
BrownFi V3
█████████▒ 90% Complete 👀
In traditional market making, bid-ask spread is the top 1 tool to protect LPs against informed traders (or adverse selection). But in most AMMs, Spread = zero, where Bid and ask collapse to the same point on the bonding curve. LPs are fully exposed.
BrownFi V3 changes this.
We built a dynamic spread system that responds to real market signals:
- Oracle price discrepancy
- Volume imbalance (VPIN)
- Markout & external price events
🟡 When market is stagnant (low volatility, balanced flow):
- VPIN is low → flow is mostly uninformed
- Narrow the spread
- Maximize trade volume → LPs earn more fee.
🔴 When market crashes (strong sell pressure):
- 📈 Widen Bid side → Bid moves further down
- Limit LP losses from one-sided selling pressure of base token.
- 📉 Narrow Ask side → attract buyers to get base token out, rebalance pool faster.
🟢 When market is in a momentum run (FOMO / one-sided buying pressure):
- Pool drains of base token as buyers pile in
- 📈 Widen Ask side → make buying base more expensive
- Slow down informed/momentum buyers extracting value
- 📉 Narrow Bid side → incentivize sellers to bring base back
- Pool rebalances before LPs take asymmetric inventory loss
With this design, each market regime can get a tailored response, not a one-size-fits-all fee hike like other AMMs. And this dynamic spread system can serve as a real market making desk in Defi.
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