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Mainstreet (Main St / MainStreet.Finance) is a DeFi stablecoin yield protocol built on Sonic that issues msUSD, a dollar-pegged yield-bearing stablecoin, and smsUSD, its staked counterpart, generating yield via delta-neutral options-arbitrage strategies.
Strong across credit, technical, and operational risk
New curator — short on-chain track record. This grade leans on structure and peers more than realized history, so expect it to be volatile and move as the book seasons.
Loss axis only (yield/fees excluded). Curator-level Expected Loss, TVL-weighted across the live book. v1 (curatorwatch-risk-methodology-v1.md), schema 1.0.0 · model 4b840ab · updated 2026-07-06.
Daily closing AUM from CuratorWatch snapshots — hover for any day. History begins when tracking began, not at the curator’s inception.
| Deal | |||||||
|---|---|---|---|---|---|---|---|
| Mainstreet USDC | USDC | morpho | A+ | $2.65M | — | 10% | — |
| Mainstreet USDC | USDC | morpho | A+ | $1.33M | — | 10% | — |
EL grade is the vault’s Expected-Loss rating from CuratorWatch’s loss-anchored model — the annual loss an LP should expect (probability of loss × severity), graded A+ (lowest expected loss) through E. Hover a grade for the modeled bps/yr and confidence interval; “—” means not yet rated. Deal links open the deposit flow for vaults this curator currently offers through Turtle, with TVL and APR pulled live from the opportunity.
Healthy liquidations repay lenders in full; bad debt is the loss signal. Full event detail lives in the Liquidations lens.
APY decreased 56.2% from 7-day average (1.60% → 0.70%). This is a >30% deviation, happening <5% of the time.
APY decreased 46.8% from 7-day average (0.16% → 0.09%). This is a >30% deviation, happening <5% of the time.
APY decreased 50.9% from 7-day average (0.33% → 0.16%). This is a >30% deviation, happening <5% of the time.
APY increased 469.3% from 7-day average (1.71% → 9.76%). This is a >30% deviation, happening <5% of the time.
APY increased 313.2% from 7-day average (1.53% → 6.32%). This is a >30% deviation, happening <5% of the time.
APY decreased 70.1% from 7-day average (0.54% → 0.16%). This is a >30% deviation, happening <5% of the time.
APY increased 220.8% from 7-day average (1.35% → 4.34%). This is a >30% deviation, happening <5% of the time.
APY decreased 76.6% from 7-day average (0.69% → 0.16%). This is a >30% deviation, happening <5% of the time.
APY increased 167.2% from 7-day average (1.24% → 3.32%). This is a >30% deviation, happening <5% of the time.
APY decreased 79.4% from 7-day average (0.78% → 0.16%). This is a >30% deviation, happening <5% of the time.
APY increased 124.5% from 7-day average (1.12% → 2.52%). This is a >30% deviation, happening <5% of the time.
APY decreased 81.5% from 7-day average (0.87% → 0.16%). This is a >30% deviation, happening <5% of the time.
APY increased 95.8% from 7-day average (1.04% → 2.03%). This is a >30% deviation, happening <5% of the time.
APY decreased 82.6% from 7-day average (0.93% → 0.16%). This is a >30% deviation, happening <5% of the time.
APY increased 88.9% from 7-day average (0.85% → 1.61%). This is a >30% deviation, happening <5% of the time.
APY increased 89.0% from 7-day average (0.85% → 1.61%). This is a >30% deviation, happening <5% of the time.
APY increased 83.3% from 7-day average (0.67% → 1.23%). This is a >30% deviation, happening <5% of the time.
APY increased 83.3% from 7-day average (0.67% → 1.23%). This is a >30% deviation, happening <5% of the time.
APY increased 79.5% from 7-day average (0.56% → 1.00%). This is a >30% deviation, happening <5% of the time.
APY increased 79.6% from 7-day average (0.56% → 1.00%). This is a >30% deviation, happening <5% of the time.
APY increased 87.9% from 7-day average (0.42% → 0.79%). This is a >30% deviation, happening <5% of the time.
APY increased 87.8% from 7-day average (0.42% → 0.79%). This is a >30% deviation, happening <5% of the time.
APY increased 99.2% from 7-day average (0.32% → 0.63%). This is a >30% deviation, happening <5% of the time.
APY increased 103.4% from 7-day average (0.31% → 0.63%). This is a >30% deviation, happening <5% of the time.
APY increased 129.7% from 7-day average (0.22% → 0.51%). This is a >30% deviation, happening <5% of the time.
Users with positions across multiple vaults