How Pendle Lets Me Lock In 10% Fixed Yield on ETH

A practical guide to yield tokenisation from someone who trades it

Pendle splits yield-bearing assets into tradeable principal and yield tokens — unlocking strategies that don’t exist anywhere else in DeFi.

Variable yields in DeFi are a rollercoaster. For one week, your stETH earns 4.2%. The next week it drops to 2.8%. The week after, it spikes to 5.1%. If you’re trying to plan around your returns, this unpredictability is maddening.

That’s why I started using Pendle. It’s the only protocol in DeFi that lets me lock in a guaranteed fixed yield on assets I already hold. No guessing. No, hoping rates stay high. Just a number I can count on.

Sounds perfect, right? It’s not — but it’s genuinely useful once you understand what you’re giving up. In this article, I’ll explain exactly how Pendle’s yield tokenisation works, how I use it in my portfolio, and the tradeoffs nobody mentions when they’re selling you on fixed yield.

The Core Concept: Splitting Yield from Principal

Pendle does something genuinely novel. It takes any yield-bearing asset — stETH, GLP, eETH, whatever — and splits it into two separate tokens.

Principal Token (PT) — represents your underlying asset, redeemable at maturity. Think of it as a zero-coupon bond. You buy it at a discount today and receive the full value later.

Yield Token (YT) — represents all the yield that the asset will generate until maturity. It starts with value and decays to zero at expiry, because once maturity hits, there’s no more yield to collect.

This separation is powerful because it lets you trade yield independently from principal. And that unlocks strategies that don’t exist anywhere else in DeFi. But a novel also means fewer people understand the risks, thinner liquidity in some markets, and wider spreads when volatility hits. Keep that in mind as we go deeper.

How Fixed Yield Works (PT)

This is the strategy I use most. Here’s a real example.

stETH currently earns roughly 3.5% variable APY. On Pendle, I can buy stETH PT at a discount — say 0.965 ETH per token — with a maturity date six months away.

At maturity, my PT is redeemable for 1 ETH worth of stETH. I paid 0.965. I received 1.0. That’s a 3.5% return over six months, or approximately 7.2% annualised.

The critical part: this yield is locked in at the moment I buy. It doesn’t matter if stETH’s variable rate drops to 1% or spikes to 8% over those six months. My return is fixed at 7.2%.

For someone who wants a predictable income from their ETH holdings, this is transformative. No more checking rates daily. No more worrying about yield compression. Just a guaranteed number.

Now here’s the part that the Pendle tutorials gloss over. The discount you get on PT reflects the market’s expectation of future yields. If the market expects high variable yields, PT trades at a smaller discount — meaning a lower fixed rate for you. If the market expects yields to drop, PT trades at a bigger discount — higher fixed rate. You’re essentially betting against the market’s yield expectations. And the market isn’t always wrong.

If variable rates spike to 12% over your holding period, you’re locked in at 7.2%, watching everyone else earn more. That’s the price of certainty. I’ve paid it, and I’d pay it again — but only because I made that choice deliberately, not because I didn’t understand the tradeoff.

Fixed yield removes the guessing — but it also removes the upside. That’s the tradeoff most tutorials skip.

How Variable Yield Speculation Works (YT)

The other side of the trade is YT — and it’s where things get genuinely interesting and genuinely dangerous.

When you buy YT, you’re buying exposure to all the variable yield on the full principal amount, but for a fraction of the cost. If stETH PT costs 0.965 ETH, then YT costs roughly 0.035 ETH. For 3.5% of the capital, you get 100% of the yield exposure.

This is effectively leveraged yield exposure. If variable rates stay at 3.5%, your YT earns roughly what you paid for it — break-even. If rates spike to 6%, your YT earns significantly more than its cost. If rates drop to 1%, your YT barely earns anything, and you lose most of your investment.

Let me be direct about this. YT is a speculative instrument. The leverage works both ways, and most people buying YT are not thinking clearly about the scenarios where they lose. I use YT sparingly and only when I have a strong conviction that yields will increase — for instance, during periods of high network activity when staking demand surges. It’s a tactical bet, not a core holding. And I size it knowing I could lose the entire position.

The Markets I Trade

Pendle’s TVL has crossed $5 billion, with markets across multiple yield-bearing assets. Here’s where I focus and — equally important — why.

stETH markets — The deepest liquidity and most predictable yields. Fixed rates currently range from 5–8% depending on maturity. This is my primary PT position because the underlying asset has a long track record, and its liquidity allows me to exit early if necessary without catastrophic slippage.

eETH markets — EtherFi’s liquid restaking token. Higher implied yields because of restaking rewards and loyalty points. Fixed rates of 8–12%. More volatile than stETH, and here’s the honest assessment — part of that premium compensates for real additional risk. Restaking is newer, less battle-tested, and more complex under the hood. The yield reflects that.

GLP markets — GMX’s liquidity provider token. Yields fluctuate with trading volume on GMX. Fixed rates of 10–15% when trading activity is high. I only enter these when implied rates look attractive relative to historical averages — and I keep positions smaller because the yield source is inherently cyclical.

Maturity selection — I prefer 3–6 month maturities. Short enough that I’m not locked in for too long, but long enough to capture meaningful yield. Longer maturities (12+ months) offer higher rates but tie up capital and carry more uncertainty. In crypto, twelve months is a lifetime of risk.

My Pendle Allocation

Within my broader yield-optimisation portfolio, Pendle accounts for 30% of my capital. Here’s how I split it:

• 80% in PT positions — Primarily stETH PT (6-month maturity) and eETH PT (3-month maturity). Fixed yields of 6–10%. This is the core — predictable, reliable income.
• 20% in YT positions — Small, tactical bets on yield direction. Only when I see a clear catalyst for rising rates. I size these with the understanding that I could lose the entire position.

I never hold PT and YT on the same asset simultaneously — that recreates the original yield-bearing position with extra steps and fees. If you see someone recommending that strategy, they don’t understand what they’re selling.

Risks Specific to Pendle

Pendle introduces risks that don’t exist in plain yield farming. I’m listing these not to scare you off, but because I’ve seen too many people enter Pendle positions with only the upside in mind.

Implied rate risk — The fixed rate you lock in might look attractive today, but could seem poor if variable rates surge. You’ve given up the upside. This isn’t a flaw — it’s the fundamental tradeoff. But too many people lock in fixed rates without consciously accepting this cost.

Liquidity risk — PT and YT tokens trade on Pendle’s AMM. Near maturity, liquidity can thin out significantly. If you need to exit early, you might face meaningful slippage. I always plan to hold PT to maturity rather than trading out early. If you can’t commit to holding until maturity, think carefully about whether Pendle is the right tool for you.

Smart contract risk — Pendle adds a layer of smart contracts on top of the underlying yield protocol. More code means more potential attack surface. Pendle has been audited multiple times and has processed billions, but no amount of audits makes the risk zero. An audit is a snapshot — code gets updated, new interactions create new vulnerabilities.

Maturity management — PT tokens expire. If you forget to redeem at maturity, your capital sits idle, earning nothing. I set calendar reminders for every maturity date. This sounds trivial until you’re managing five positions across different maturities and one slips through.

Underlying protocol risk — Your PT is only as safe as the underlying asset. If Lido gets exploited and stETH depegs, your stETH PT loses value regardless of the fixed rate you locked in. The fixed rate protects you from yield fluctuation, not from protocol failure.

Every layer of abstraction adds convenience — and another surface where things can break. Fixed yield protects against rate fluctuations, not against protocol failure.

When Fixed Yield Makes Sense

I don’t use Pendle for everything. Here’s my decision framework — and the discipline matters more than the strategy itself.

Use PT (fixed yield) when:

• You believe variable rates will decline or stay flat
• You want a predictable income for planning purposes
• You’re willing to give up potential upside consciously, not accidentally
• The fixed rate exceeds what you’d realistically expect from a variable over the same period

Use YT (variable speculation) when:

• You have strong conviction rates that will increase — conviction backed by a specific catalyst, not just optimism
• You’re comfortable with the possibility of total loss on the position
• A clear catalyst exists (network upgrade, increased activity, new AVS launches)
• You’re sizing it as a small bet — I never put more than 5–6% of my total portfolio into YT

Skip Pendle entirely when:

• You need instant liquidity (PT locks you in until maturity)
• The fixed rate is below your minimum threshold
• You’re not comfortable with the additional smart contract complexity
• You don’t have time to manage maturity dates and monitor positions

Comparing Pendle to Traditional Fixed Income

What Pendle offers is genuinely new in DeFi. Before Pendle, if you wanted a fixed yield on ETH, your options were limited to centralised lending platforms, which carried counterparty risk.

Now you can get 6–10% fixed yield on ETH, fully on-chain, non-custodial, with transparent mechanics. The tradeoffs are smart-contract risk rather than counterparty risk. For me, that’s a trade I’m willing to make — especially with battle-tested protocols like Lido as the underlying.

But I want to be honest about something. Traditional fixed income has centuries of legal infrastructure, insurance, and regulatory protection behind it. DeFi fixed yield has smart contracts and audits. The yields are higher precisely because the risks are different and less understood. If DeFi fixed yield offered the same risk profile as treasury bonds, it would pay the same rates. The premium exists for a reason.

Traditional finance has had fixed-income instruments for centuries. DeFi is catching up, and Pendle is leading the way. Just don’t confuse higher yield with free money.

Getting Started with Pendle

If you want to try Pendle, here’s the path I’d recommend — and the mistakes I’d want you to avoid.

1. Start with a small stETH PT position. Choose a 3-month maturity for your first trade. Small enough that if something goes wrong, you learn a lesson instead of taking a loss you can’t absorb.
2. Use Pendle’s built-in calculator to see your exact fixed yield before committing. If the number doesn’t excite you after fees and gas, wait for better rates.
3. Set a calendar reminder for the maturity date. Then set another one a week before.
4. At maturity, redeem your PT for the underlying asset. Don’t let it sit idle.
5. Once comfortable with the mechanics, explore eETH or GLP markets for higher yields — understanding that the higher rates reflect higher risk.

Don’t start with YT. It’s a speculative instrument that requires understanding implied rates, yield curves, and scenario analysis. Master PT first. I spent three months trading only PT before I touched YT, and I’m glad I did.

I made a complete video covering Pendle in depth — including yield calculations and my allocation framework:

📺 Watch the full guide: [https://youtu.be/5QD0eYJfEb0]

This content is for educational purposes only and should not be considered financial advice. Always do your own research before making investment decisions.