Prime brokerage for
tokenized stocks

Yes, one step. Provyn uses an AI reasoning step to run these checks, reading your position and Kamino's prices, and simulating the transaction, but it only proposes. Every signature is yours.

No. Provyn never holds your keys or your assets. Every transaction is built unsigned, and the only way it goes through is you signing it in your own wallet, Provyn's send step accepts nothing that your wallet hasn't already signed.

Kamino's xStocks market lists 10 tokenized stocks: SPYx, QQQx, HOODx, GOOGLx, CRCLx, TSLAx, NVDAx, METAx, AAPLx, and MSTRx. Borrow and Earn work the same way for each. Multiply is only offered where Kamino has live Multiply positions, right now SPYx, QQQx, TSLAx, and NVDAx, and never proposed anywhere else.

Each asset has a loan-to-value limit (the most you can borrow against it) and a higher liquidation threshold, for example AAPLx 40% / 50%, SPYx 73% / 75%, TSLAx 55% / 65%. If your collateral's value falls far enough that your debt crosses the threshold, Kamino can liquidate part of it. Provyn aims for a health factor of at least 1.5 and flags anything lower in plain language.

You pay Kamino's variable USDC borrow rate, 7.43% APY as of the last check. It moves with how much of the pool is borrowed, so the proposal shows the rate at the moment it's made, not a fixed quote.

Because right now it loses money: borrowing USDC costs 7.43% while supplying it earns 6.03%, a net carry of −1.41% a year. The agent says so and suggests borrowing only for what you actually need. It will consider the earn leg once supply beats borrow.

A Kamino-managed leveraged position. In one transaction, a flash loan borrows USDC, a Jupiter swap turns it into more of your stock, and everything is deposited as collateral, so you hold more exposure than you started with. Leverage amplifies losses as well as gains, and you pay the USDC borrow rate on the debt. Provyn sizes it conservatively (e.g. 1.5×).

Provyn cross-checks each xStock's price against Pyth's independent feed before sizing a position. Our API key doesn't yet carry entitlement for equity or xStock feeds, so that check currently returns unavailable. When it does, the agent says so, lists it as a risk, and sizes the position smaller, it never pretends the check passed.

xStocks are Token-2022 tokens with a scaled display: wallets show your raw balance × an issuer-set multiplier (AAPLx is currently ×1.003269), but Kamino moves raw units. Provyn sizes every deposit from the raw amount, the displayed figure once failed a real simulation with “insufficient funds”.

Provyn checks your position and simulates the transaction before every proposal, that only works if checking is cheap. Reads are free, and a real transaction fee is 5,000 lamports (about $0.0006). And the assets themselves, xStocks and Kamino's market for them, already live here.