How Pendle Yield Trading Works: PT, YT, and Point Farming

Pendle is a yield-trading protocol. Its core function is not to generate yield but to unbundle it, so that the principal of a yield-bearing asset and the income that asset produces can be priced, traded, and held by different people.

That unbundling is the on-chain version of bond stripping. Pendle's own documentation makes the comparison explicit: "PTs are equivalent to zero-coupon bonds, while YTs are the detached coupon payments." Once the two halves trade separately, a floating on-chain rate acquires something it never had before: a forward curve that anyone can read and trade against.

This article covers the mechanics of both halves, the four APY numbers a Pendle market displays, how to compute the break-even on a yield-token position, and how to back out what you are actually paying for points.

1. The three tokens: SY, PT, and YT

Pendle uses a three-step wrapper before anything is tradable.

The key structural fact is that PT and YT are complements. If one unit of the underlying is worth 1.00 and PT trades at 0.978, then YT must trade near 0.022, because buying both must cost about the same as buying the whole asset. Every statement about one is a statement about the other.

Maturity is the pivot. Pendle's glossary defines it as "the date at which PT becomes fully redeemable for the underlying asset and YT stops accruing yield." Every Pendle market is a dated instrument, and the date is part of the position.

2. How PT produces a fixed yield

PT works by convergence. Pendle's documentation states that "upon maturity, PT can be redeemed at 1:1 for the accounting asset," and that "the value of PT will approach and ultimately match the value of accounting asset on maturity when redemption is enabled. This appreciation in value is what establishes its Fixed Yield APY."

So the fixed rate is not paid to you as a coupon. It is the difference between what you pay now and the 1.00 you redeem later, annualized over the time you wait.

A worked example

Take a market with 90 days to maturity where PT trades at 0.978 of the accounting asset.

Spending one unit of the underlying buys you 1 ÷ 0.978 = 1.0225 PT. Pendle annualizes that exchange rate with the formula from its APY calculation documentation:

effectiveImpliedApy = ptExchangeRate ^ (365 / daysToExpiry) − 1

Substituting: 1.0225 ^ (365 / 90) − 1 = 1.0225 ^ 4.056 − 1 = about 9.4%.

That 9.4% is fixed on the day you buy, and it does not change if the underlying asset's yield collapses to 2% the following week.

What this example actually tells you

A fixed rate is a market price, not a protocol feature. The 9.4% exists because someone on the other side sold their floating exposure at that level. If a market shows an unusually high fixed rate, the useful question is not "why is Pendle so generous" but "what does the seller know about this asset's forward yield, or its risk, that I do not."

The rate is only guaranteed if you hold to maturity. Before maturity, PT trades at whatever the market will pay. If the implied rate rises after you buy, the price of your PT falls, exactly like a bond. Selling early realizes that mark-to-market move instead of your locked rate. Your fixed rate is a hold-to-maturity return, and the position carries duration risk in the meantime.

"Guaranteed" describes the redemption ratio and not the credit. PT redeems 1:1 for the accounting asset. It does not promise that the accounting asset is still worth what you assumed. If the underlying protocol takes on bad debt, gets exploited, or its asset depegs, the 1:1 redemption delivers a devalued unit. The fixed rate is fixed in units of the accounting asset only.

3. How YT produces leveraged exposure to a floating rate

YT is the mirror image. Pendle's documentation states that "by holding YT, yield from the underlying asset will be streamed to the users, up until maturity," and that "because YTs are purchased for a fraction of the underlying asset's price, they offer leveraged exposure to its yield."

The leverage is arithmetic, not borrowed. One YT collects the same income as one full unit of the underlying, but it costs only the value of the income stream.

A worked example

Continue the same market: 90 days to maturity, PT at 0.978, so YT costs 0.022 per unit.

That 0.022 buys the income of a full 1.00 of the underlying for 90 days. Notional exposure is 1 ÷ 0.022, or roughly 45 times the cash outlay.

Now run three scenarios for what the underlying actually averages over those 90 days. Pendle takes a 5% protocol fee on yield, which is applied below.

Figure 1 puts all three of those scenarios, and every realized yield between them, on a single payoff chart, with PT's fixed return drawn alongside YT's for direct comparison.

Reading Figure 1

The chart plots return on the outlay — what you get back divided by what you paid, minus one — against every realized average yield from 0% to 25%. PT is the flat line sitting just above the 0% gridline: it does not move, whatever realized yield turns out to be. YT is the steep, rising line, because a 0.022 outlay carries roughly 45 times that in notional exposure: a small move in the underlying's realized yield is a large move in YT's return.

Start at the default position, 9.4%. That is the Implied APY, marked with the dashed copper line. At that exact realized yield, YT's return sits at about -2.9%, not zero — the small gap below the dashed line is Pendle's 5% protocol fee, which taxes YT's accrued yield but never touches PT's fixed redemption. Drag the slider down to 4% and YT's return falls to about -58%; drag it up to 15% and it climbs to about +51%. Those are the same three numbers from the comparison table above, now visible as three dots on one curve instead of three rows in a table.

Find the dot where the two lines actually meet, just under 10%. That is the true break-even, after the protocol fee — a little above the 9.4% Implied APY marked by the dashed reference line, because the 5% fee taxes YT's accrued yield but never touches PT's redemption. (Set the fee to zero and the two break-evens coincide exactly — that identity is what "Implied APY" means.) To its left — the shaded region — a YT buyer loses money relative to simply holding PT instead. To its right, YT wins, and it wins by a widening margin the further right you go, because the curve keeps climbing while PT stays flat.

Notice the floor at the far left. At 0% realized yield, YT's return bottoms out at exactly -100%: the position accrues nothing and the entire premium is lost, but no more than that. That is the bounded downside described above, drawn as a literal floor rather than asserted in prose.

Use it as the whole decision. Buying YT is a bet that realized yield lands to the right of that black dot. Buying PT is the opposite bet: that realized yield stays at or below it, or that you would simply rather lock in a known return than take a leveraged position on a forecast. There is no third reading of this chart — everything else in this article is detail on top of where you think the market's dot will actually fall.

What this example actually tells you

Your break-even is the Implied APY, not zero — and a little above it once fees are counted. Pendle defines Implied APY as "the market consensus of the future APY of an asset." Buying YT is a statement that the underlying will average more than that consensus for the remaining term. Strictly the fee-free break-even is the Implied APY exactly; the 5% protocol fee taxes YT's accrued yield without touching PT's redemption, which lifts the real crossing to just under 10% in the worked market, as Figure 1 shows. A high current APY is not the trade thesis. A current APY above the implied rate that you believe will persist is the trade thesis.

The downside is bounded and the payoff is option-shaped. The most you can lose on a YT position is the premium you paid, because YT cannot go below zero. That makes it structurally similar to buying a call option on a rate: high leverage, defined risk, and a cost that decays with time. Sizing it like a yield position rather than like an option premium is the most common error.

Buying late shortens the forecast, it does not cheapen the bet. As maturity approaches, YT gets cheaper because fewer days of accrual remain. The percentage sensitivity to the rate stays broadly similar; what changes is the window you are forecasting. An early buyer is betting on a long average. A late buyer is betting on the rate right now. Choose the maturity that matches the confidence you actually have.

4. Reading the four APY numbers on a market

A Pendle market shows several rates at once, and they answer different questions. Confusing them is the fastest way to take the wrong side.

The relationship worth memorizing is that Long Yield APY is essentially Underlying APY minus Implied APY, expressed as a return on the YT price. When Underlying APY sits above Implied APY, buying YT looks profitable on current conditions. When Implied APY sits above Underlying APY, the market is pricing in something the trailing average does not capture.

Why Long Yield APY is often negative

A negative Long Yield APY means the total expected cash yield through maturity is worth less than the cost of the YT. On the face of it that is an obviously bad trade. It is extremely common anyway, and the reason is points.

5. Point farming: what a yield token actually buys

Many yield-bearing assets on Pendle come attached to a points campaign run by the underlying protocol. Because YT holds the entitlement to everything the underlying produces during the term, points flow to YT holders.

Two facts from Pendle's own documentation define the mechanism precisely:

• Pendle does not manufacture points. The documentation is explicit: "Pendle simply streams points from the underlying to YT holders," and adds a direct clarification that "Pendle does NOT give nor generate additional points to enable YT's leverage."
• Pendle values points at zero. The protocol's displayed rates assume points have no value, which is why Long Yield APY can be deeply negative on a market that traders are actively buying.

So where does the famous points multiplier come from? From the price of YT, not from any bonus. One YT earns the points of one unit of the underlying, but one YT costs a fraction of one unit. At a YT price of 0.022 you get the points of 1.00 of notional for 0.022 of capital, which is roughly 45 times the points per dollar of a spot holder.

Backing out the implied price of points

This is the calculation most points farmers never do, and it converts a vibe into a number.

Using the same market with YT at 0.022 and an Underlying APY of 4% over 90 days:

• Expected cash yield through maturity, after the protocol fee: about 0.0092
• Cost of the YT: 0.0220
• Implied payment for the points: 0.0220 − 0.0092 = 0.0128

You are paying 0.0128 for 90 days of points on 1.00 of notional. Whether that is cheap depends entirely on your estimate of the eventual airdrop value per point, which is exactly the estimate you should be forced to write down before entering.

6. Why YT decays to zero and what that means for timing

Pendle's documentation states the endpoint without ambiguity: "the value of YT trends towards 0 as it approaches maturity, becoming 0 upon maturity."

This is not a bug or a depeg. It is definitional. YT is a claim on income produced between now and maturity. At maturity there is no remaining income attached to it, so the claim is empty. The value has not disappeared, it has been paid out to you in accrued yield and points along the way.

The practical consequence is that YT positions need active management in a way PT positions do not. A PT holder can buy and ignore the position until maturity. A YT holder is running a decaying position whose profit and loss is the race between accrued income and elapsed time.

7. Choosing a side

Every row below reduces to the crossing point already drawn in Figure 1: PT is the view that realized yield lands at or below the break-even, YT is the view that it lands above.

8. Risks specific to yield tokenization

Stacked smart contract risk. A Pendle position holds two contract surfaces at once: the underlying yield-bearing protocol and Pendle's own wrapper, AMM, and router. A failure at either level affects the position, and the yields quoted do not price that stacking.

Accounting asset risk. PT redeems into the accounting asset, whatever has happened to it. A yield-bearing stablecoin that loses its peg still redeems 1:1 into the depegged unit. This is the risk that a "fixed yield" label obscures most effectively.

Liquidity and slippage on exit. Both PT and YT trade on an AMM with finite depth, and depth is concentrated in the most active maturities. A large position in a thin, long-dated market can be materially more expensive to exit than to enter.

Campaign risk on points markets. When a large share of a market's demand rests on a points campaign, the market's pricing depends on that campaign continuing on its current terms. A change in multiplier, eligibility, or program end date can reprice YT sharply and immediately.

Rate risk before maturity. PT is a fixed-income instrument and behaves like one. Rising implied rates lower PT prices. Holders who expect a savings-account experience are often surprised by the mark-to-market path even when the hold-to-maturity outcome is unchanged.

9. Conclusion

Pendle's contribution is not a higher yield. It is a price for yield, published continuously and open to either side. The Implied APY on a market is the number that matters, because it is simultaneously the fixed rate a PT buyer locks in and the hurdle a YT buyer must beat.

The decision framework is short. If you believe the underlying will earn less than the implied rate, or you simply want a known return over a known term, buy PT and hold it to maturity while remembering that the guarantee is denominated in an accounting asset with its own credit risk. If you believe the underlying will earn more than the implied rate, buy YT and size it like an option premium, because that is what it is and it will be worth zero on the maturity date.

For points markets, do the subtraction before you buy: cost of YT minus expected cash yield equals the implied price of the points. That number, compared against your own estimate of the eventual distribution, is the entire trade. Everything else is narrative.

For how yield tokenization compares with other on-chain yield strategies, see advanced DeFi yield and hedging strategies. For the related market that trades perpetual funding rates rather than staking yield, see funding rate trading on Boros.

Frequently asked questions

Sources and further reading

Primary protocol documentation:

• Pendle Documentation — Protocol mechanics glossary
• Pendle Documentation — Principal Token (PT)
• Pendle Documentation — Yield Token (YT)
• Pendle Documentation — Market APY calculation
• Pendle Academy — Points support page

Related CoinBeaver articles:

• Advanced DeFi yield and hedging strategies
• Trading funding rates on margin with Boros
• DeFi lending explained

This article is educational and is not financial advice. All prices, rates, and maturities used above are illustrative examples rather than live market quotes, and Pendle market parameters, fees, and points campaigns change frequently. Verify current figures in the application and the protocol documentation before trading.