How PendleLoop's 'Loop to Long' works on Base tokenized stocks

Pendle introduced PendleLoop on Oct. 22 (Pendle on X). On Oct. 23 it said the product was live for users to "Loop to Long" Base tokenized stocks onchain, powered by Aave markets, with incentives claimable on Merkl (Pendle on X). Pendle Print #128, dated Oct. 26, repeats the pitch: "Long or short any token with leverage, tokenized stocks included" (Pendle Print #128). For the borrow side on its own, see our guide to borrowing against tokenized stocks on Base.

Who can use the tokens

The stocks involved are Coinbase Tokenized Stocks on Base. Coinbase issues them, and Base's stocks page says they are "backed 1:1 by shares held in regulated custody," "offered under Regulation S," and "only available in eligible jurisdictions outside of the US" (Base). The page does not list which jurisdictions qualify. Aave's own post says the tokens are offered "only to eligible non-U.S. persons in permitted jurisdictions" (Aave).

What "looping" means

Pendle's documentation describes the mechanic for Pendle's principal tokens (PTs), not for stocks. The PT looping page does not mention stocks, Base or "Loop to Long" (Pendle docs). Pendle's Oct. 22 introduction says the product covers tokenized stocks and non-PT assets such as sUSDe (Pendle on X), and Print #128 says the same (Pendle Print #128). The steps below come from the PT documentation. Whether PendleLoop's stock flow is identical is an inference, not something Pendle's docs state.

Pendle's docs describe a loop as "repeating three steps until your chosen Target Leverage is reached, automatically, within a single transaction flow" (Pendle docs):

1. Supply the asset as collateral to a money market such as Aave or Morpho (Pendle docs).
2. Borrow the market's debt asset against that collateral (Pendle docs).
3. Use the borrowed funds to buy more of the asset, then supply it back as collateral (Pendle docs).

For a stock position, the repeated purchase is what makes it a long: each pass adds exposure funded by debt. Pendle's docs add that the contract fixes a minimum exchange rate at the moment you sign, and that if prices move too far mid-execution, "the transaction stops at that step instead of finishing the remaining iterations," which can leave you with fewer iterations and lower leverage than the preview showed (Pendle docs).

Managing a looped position

The docs list four actions. Add Position deposits more funds and loops them at the target leverage. Add Collateral deposits without looping, which lowers leverage and improves the Health Factor. Adjust Leverage moves up to loop further or down to unwind part of the position. Withdraw takes a percentage out in a chosen asset, with a preview of resulting leverage, Health Factor and net equity (Pendle docs).

The service fee is dynamic, resets daily per market, and is capped at 10bps; withdrawing and decreasing leverage carry no service fee, while a trade fee and gas still apply (Pendle docs).

The leverage arithmetic

Every pairing has a liquidation loan-to-value (LLTV), which Pendle defines as "the loan-to-value at which the position becomes liquidatable," and a maximum leverage derived from it. The Health Factor shows how close a position is to that line, and "LTV reaching the pairing's LLTV" is "always a liquidation trigger" (Pendle docs). On Aave V4, a position becomes liquidatable at a health factor below 1.0, and lower health factors earn liquidators higher bonuses (Aave liquidation docs).

The numbers below are illustrative arithmetic, not any live market's parameters.

• Leverage of 2x means 100 of your own money controls 200 of stock, with 100 borrowed. A 10% rise takes the position to 220; after repaying 100 you hold 120, a 20% gain on your 100. A 10% fall leaves 180, or 80 after repaying the debt, a 20% loss.
• Liquidation distance depends on the LLTV. With a hypothetical 80% LLTV, a 2x position (LTV 50%) is liquidated only after the stock falls 37.5%. At 4x (LTV 75%) the distance shrinks to 6.25%.
• Borrowing costs run against you. Pendle's docs warn that when net yield is negative, "borrowing interest accrues faster than PT yield, gradually eroding equity," which worsens the Health Factor over time (Pendle docs).

The weekend gap

Aave's post on its Equities Hub says Chainlink's "24/5 tokenized equity feeds" publish "from Sunday 20:00 ET to Friday 20:00 ET," and that when markets are closed "the feeds hold the last published price, so collateral values do not change until the underlying market reopens." During that window, Aave says, "a position's health factor can fall only through interest accrual" (Aave). Base's page says the tokens themselves trade "any hour of any day, including weekends and US market holidays" (Base).

The sources do not combine those facts for leveraged users, so this part is our reading. If the lending market's collateral price is frozen while the tokens trade, a move over the weekend cannot trigger liquidation until the feed resumes. At the reopening the oracle price jumps to the new level in one step. A 4x position with a 6.25% buffer in the arithmetic above can go from healthy to liquidatable on a single update. Users can still add collateral over the weekend (Pendle's docs list Add Collateral as an action, Pendle docs); only the oracle price is frozen.

The borrow side

Aave's Sept. 25 post describes seven tokens accepted as collateral (AAPLc, AMZNc, GOOGLc, METAc, MSFTc, NVDAc, TSLAc) against a single USDC reserve, with equities collateral-only at launch (Aave). Base's page lists ten tokens (Base). Pendle says PendleLoop is powered by Aave markets, but none of the pages we read states that it uses that specific Equities Hub, or which of the tokens it accepts. Aave's borrow docs say "borrowing assets is a risk-increasing action" and advise monitoring the health factor and market volatility (Aave borrow docs). Related: Pendle yield markets on Base and Base's 24/7 stocks push. Aave has its own entity page.

Open questions

The published material does not answer:

• Which tickers PendleLoop supports, and whether the list matches Aave's seven collateral tokens.
• The maximum leverage and LLTV per stock pairing. Pendle's docs say each pairing lists them, but the PT page names no stock values and no source we found publishes them.
• The terms of the Merkl incentives: rate, caps and end date. Pendle's post says only that they are claimable on Merkl.
• How the minimum-exchange-rate and early-stop behavior applies to stock loops when markets are closed.
• How the Regulation S and non-US restriction is enforced at the PendleLoop interface.

Sources

• Pendle on X, Oct. 23: launch statement, Aave and Merkl.
• Pendle Print #128: leverage, stocks and sUSDe.
• Pendle docs, PT looping: loop mechanics, fees, risks.
• Aave, Coinbase tokenized stocks: collateral list, oracle hours.
• Aave liquidation docs: liquidation trigger.
• Aave borrow docs: risk guidance.
• Base, tokenized stocks: issuer, backing, eligibility.