APR and APY: what are you actually earning?
These are the two most common ways to express yield, and they are not the same thing. Confusing them can make you think you're earning significantly more than you actually are.
APR — Annual Percentage Rate
APR is the simple interest rate over one year, without compounding. If you deposit $1,000 at 10% APR, you earn $100 over the year. Period.
APR assumes you collect your rewards and put them aside — you never reinvest them. It's a straightforward, honest number.
APY — Annual Percentage Yield
APY is the effective rate with compounding — assuming you reinvest your earnings back into the same position, and those earnings then also earn returns.
If you deposit $1,000 at 10% APR and compound daily:
- Day 1: You earn a tiny amount of interest
- Day 2: You earn interest on your original $1,000 + yesterday's interest
- Day 365: Your effective annual return is 10.52% — that's your APY
The key difference: 10% APR = you earn exactly $100 on $1,000. 10% APR compounded daily = 10.52% APY = you earn $105.16. The gap gets much bigger at higher rates.
When the gap becomes enormous
| APR | APY (daily compounding) | Difference |
|---|---|---|
| 5% | 5.13% | Negligible |
| 10% | 10.52% | Small |
| 50% | 64.87% | Significant |
| 100% | 171.46% | Massive |
| 500% | 14,641% | Absurd |
| 1,000% | 2,198,762% | Meaningless |
This is why some protocols display sky-high APY numbers — they take a modest APR and show the compounded version. A protocol showing "1,000% APY" might have a daily rate of about 0.65% — still high, but not the life-changing number the headline implies.
Why high APYs usually don't last
- Yield attracts capital — When a pool offers 200% APY, money floods in. As the pool grows, the same fees get split among more LPs, and the APY drops.
- Reward tokens inflate — Many high APYs come from token rewards. As more tokens are minted, their price drops, reducing the real value of rewards. You earn more tokens, but each token is worth less.
- Promotional periods end — Protocols often boost yields to attract early users. Once the promotion ends, yields normalize.
- The "real yield" test — Sustainable yield comes from real economic activity: trading fees, lending interest, staking rewards. If the yield comes primarily from token emissions, it's probably not sustainable.
Rule of thumb: If a yield looks too good to be true, check what's generating it. Fees from real trading volume? Probably sustainable. Token rewards being printed and given to you? Likely temporary. A mix? Somewhere in between.
APR vs. APY: which should you use?
APR is more honest. It tells you the raw rate without assumptions about compounding frequency. APY is useful for comparing opportunities where compounding is automatic (like auto-compounding vaults), but can be misleading when protocols cherry-pick compounding frequencies to inflate numbers.
When you see a yield number, always ask: is this APR or APY? And if APY: how often is it compounded, and does it assume I reinvest manually?
TVL: how much money is in a protocol?
Total Value Locked (TVL) measures the total dollar value of all tokens deposited in a DeFi protocol or smart contract. It's the most widely cited metric for measuring a protocol's size and adoption.
What TVL tells you
- Protocol adoption — A lending protocol with $5 billion in TVL has attracted significant deposits. People are trusting it with real money.
- Liquidity depth — For DEXs, higher TVL in a pool means lower slippage for traders. $100M in a pool handles large trades better than $1M.
- Relative comparison — Comparing TVL between similar protocols (Aave vs. Compound, Uniswap vs. Curve) shows where capital is flowing.
What TVL doesn't tell you
- TVL ≠ safety — A protocol with high TVL isn't necessarily safer. Terra/Anchor had over $17 billion in TVL days before it collapsed to zero.
- TVL can be inflated — Protocols can boost TVL through leverage, recursive deposits (depositing, borrowing, depositing again), or counting the same capital multiple times across layers.
- TVL drops with prices — If ETH drops 30%, every protocol holding ETH sees its TVL drop 30% — even if not a single user withdrew. TVL is price-sensitive, not just deposit-sensitive.
- TVL doesn't mean revenue — A protocol can have $10 billion in TVL but generate minimal fees. TVL measures stored value, not economic activity.
TVL of a protocol
Total deposits across all of the protocol's pools, markets, and vaults. Aave's TVL = all tokens deposited across all chains and markets.
TVL of a chain
Total deposits across all protocols on that network. "Ethereum's TVL" = every protocol's deposits on Ethereum combined.
TVL of a pool
The value of tokens in one specific pool. An ETH/USDC pool on Uniswap might have $50M in TVL — that's the liquidity available for traders.
TVL ratio (TVL / Market cap)
Compares a protocol's deposited value to its governance token's market cap. A low ratio may suggest the token is overvalued relative to usage.
Bottom line: TVL is a useful starting point, but it's a popularity metric — not a safety metric. A protocol with $50M in TVL and 3 years of clean operation may be a better choice than one with $5B in TVL that launched last month.
Perpetual futures: trading with leverage
A perpetual contract (or "perp") is a type of derivative that lets you bet on a token's price going up or down, with leverage, and without ever owning the token. Unlike traditional futures, perps have no expiration date — they can be held indefinitely.
How it works
When you open a perpetual position, you're not buying or selling the actual token. You're entering a contract that tracks the token's price:
- Going long — You bet the price will go up. If ETH is $2,000 and goes to $2,200, you profit $200 per contract. If it drops to $1,800, you lose $200.
- Going short — You bet the price will go down. If ETH drops from $2,000 to $1,800, you profit $200. If it rises, you lose.
- Leverage — With 10× leverage, you control $20,000 worth of ETH with only $2,000 of your own money (called margin). Your gains and losses are multiplied by 10.
The double edge of leverage: With 10× leverage, a 10% move in the right direction doubles your money. But a 10% move in the wrong direction wipes it out completely — that's called liquidation. Your entire margin is gone.
Open interest: how much is at stake?
Open interest (OI) is the total value of all active (open) perpetual contracts on a protocol or market. It's not trading volume — it's the total amount of money currently sitting in active positions.
What open interest measures
The total value of all long and short positions that haven't been closed yet. If 1,000 traders each have $10,000 in open ETH perp positions, the open interest is $10 million.
Why it matters
High open interest means many traders have positions at risk. When the market moves sharply, liquidations cascade — forced closures trigger more price movement, which triggers more liquidations. This is called a liquidation cascade.
How to read open interest
- Rising OI + rising price — New money entering long positions. Bulls are confident. Can sustain the uptrend, but a reversal would cause larger liquidations.
- Rising OI + falling price — New money entering short positions. Bears are piling on. A price bounce could trigger a short squeeze — forced buying that accelerates the bounce.
- Falling OI + any direction — Positions are being closed. The trend may be losing momentum. Less fuel for cascade liquidations.
- Very high OI relative to market cap — The market is heavily leveraged. Any sharp move could cause violent liquidations in both directions. Extremely volatile conditions.
Funding rate: the cost of holding a position
Since perpetual contracts don't expire, they need a mechanism to stay anchored to the real market price of the asset. That mechanism is the funding rate — periodic payments between longs and shorts.
Positive funding rate
More traders are long than short. Longs pay shorts a small fee every 8 hours (typically). This discourages excess longs, pushing the perp price back toward the spot price. Common in bull markets.
Negative funding rate
More traders are short than long. Shorts pay longs. This discourages excess shorts. Common during market fear or downtrends.
Funding rate as a cost (or income)
The funding rate is a recurring cost of holding a position. If the funding rate is 0.01% every 8 hours and you're on the paying side:
- Per day: 0.03% of your position size
- Per month: ~0.9%
- Per year: ~11%
On a 10× leveraged position, that cost is relative to the full position — so it can eat into your margin quickly. Conversely, if you're on the receiving side, funding payments are free income.
Funding rate farming: Some strategies profit from extreme funding rates. When longs are paying 0.1% per 8 hours (extreme bullishness), a trader might open a short position and hold the underlying token as a hedge. They collect the funding payments while being market-neutral. This is called a basis trade or cash-and-carry — it's one of the mechanisms behind yield-bearing tokens like Ethena's sUSDe.
Liquidation: when leverage goes wrong
When a leveraged position moves against you enough to consume most of your margin, the protocol liquidates it — forcibly closes the position and takes your margin as payment.
- 10× leverage — Liquidated at approximately a 10% adverse price move
- 20× leverage — Liquidated at approximately a 5% adverse price move
- 50× leverage — Liquidated at approximately a 2% adverse price move
Liquidation is not graceful. In fast-moving markets, you can lose more than your margin due to slippage. And liquidations don't happen one at a time — they cascade, with each liquidation pushing the price further and triggering more liquidations.
Major perpetuals protocols
Hyperliquid, GMX, dYdX, Jupiter Perps (Solana), Vertex, Drift, Gains Network — tracked by CleanSky as "Leveraged operations," the highest-risk category.
Trading metrics: volume, slippage, and price impact
Trading volume
Volume is the total value of all trades executed over a time period (usually 24 hours). It measures activity — how much is being bought and sold.
- For a token: How actively it's being traded across all exchanges. High volume = easy to buy/sell. Low volume = harder to trade without affecting price.
- For a pool: How many swaps are going through that pool. Higher volume = more fee income for LPs.
- For a protocol: Total trading activity across all pools. Indicates overall usage and revenue generation.
Slippage
Slippage is the difference between the price you expected to get and the price you actually got. It happens because the market moves between when you submit a trade and when it's executed.
- Low slippage (0.01–0.1%) — Normal for large pools and liquid tokens. You get very close to the displayed price.
- Medium slippage (0.1–1%) — Common for mid-size tokens or large trades. Still acceptable for most users.
- High slippage (1%+) — Your trade is significantly moving the market. Either the pool is small, the token is illiquid, or your trade size is too large relative to the pool.
Slippage tolerance: Most DEXs let you set a maximum slippage. If the price moves more than your tolerance before execution, the trade is cancelled. Setting it too tight = trades fail frequently. Setting it too loose = you accept worse prices. A common default is 0.5%.
Price impact
Price impact is specifically the price change that your trade causes in the pool. It's different from slippage (which includes all market movement). In an AMM, every trade shifts the token ratio, which shifts the price.
- Swapping $100 in a $10M pool: ~0.001% price impact (negligible)
- Swapping $100,000 in a $10M pool: ~1% price impact (noticeable)
- Swapping $1M in a $10M pool: ~10% price impact (very costly)
This is why pool size (TVL) matters — deeper pools absorb trades with less price impact.
Utilization rate: how much of the pool is being used?
In lending protocols, the utilization rate is the percentage of deposited funds that have been borrowed.
- Low utilization (10–30%) — Most deposits are sitting idle. Low demand for borrowing. Interest rates tend to be low.
- Optimal utilization (60–80%) — Most lending protocols target this range. Good balance between lender returns and borrower availability.
- High utilization (90%+) — Almost everything is borrowed. Interest rates spike to attract more deposits and discourage more borrowing. Withdrawal risk: if utilization is 99%, only 1% of deposits are available for withdrawal — you might have to wait for borrowers to repay before you can access your funds.
Why it matters to you: If you've deposited USDC into Aave and utilization hits 99%, you can't withdraw until someone repays their loan. Your money is technically there, but temporarily inaccessible. Most protocols use dynamic interest rates that make this situation self-correcting, but during extreme market events it can persist for hours or even days.
Market cap and fully diluted valuation
Market cap
Market capitalization is the total value of all currently circulating tokens:
Market cap = current price × circulating supply
A token priced at $10 with 100 million tokens in circulation has a market cap of $1 billion.
Fully Diluted Valuation (FDV)
FDV is the hypothetical market cap if every token that will ever exist were already in circulation:
FDV = current price × total maximum supply
If that same $10 token has a maximum supply of 1 billion tokens (but only 100 million are circulating now), the FDV is $10 billion — ten times the market cap.
Why FDV matters
A token might have a $100M market cap and look "small," but if only 5% of tokens are circulating and the FDV is $2 billion, those unreleased tokens will eventually enter the market — and unless demand grows proportionally, the price drops. This is called token unlock dilution.
Market cap / FDV ratio
A ratio close to 1.0 means almost all tokens are already circulating (low dilution risk). A ratio of 0.05 means 95% of tokens haven't been released yet — significant future selling pressure.
Supply metrics: circulating, total, and max
Circulating supply
Tokens currently available in the market — being held, traded, or used. This is what's "out there" right now.
Total supply
All tokens that have been created, including those locked in vesting, staking, or treasury contracts. Not all are tradeable, but they exist on-chain.
Max supply
The absolute maximum that will ever exist. BTC: 21 million. Some tokens have no max supply — they can be minted indefinitely (inflation risk).
Token unlocks
Scheduled releases of locked tokens — usually to team members, investors, or the treasury. Check unlock schedules: a large unlock can flood the market with new supply, pushing prices down.
A practical reference
| Metric | What it measures | Watch out for |
|---|---|---|
| APR | Simple annual return without compounding | More honest than APY; what you actually earn if you don't reinvest |
| APY | Annual return with compounding | Can be wildly inflated at high rates; check the base APR instead |
| TVL | Total value deposited in a protocol | Doesn't mean safe; can be inflated; drops with token prices |
| Open interest | Total value of active leveraged positions | High OI = risk of cascading liquidations on sharp moves |
| Funding rate | Cost of holding a perpetual position | Positive = longs pay shorts; negative = shorts pay longs |
| Volume | Total value traded in a period | High volume = liquid; low volume = hard to exit without impact |
| Slippage | Difference between expected and actual trade price | Set a tolerance; large trades in small pools = high slippage |
| Utilization | % of deposits currently borrowed | 99% utilization = you may not be able to withdraw immediately |
| Market cap | Current value of all circulating tokens | Compare with FDV to see dilution risk |
| FDV | Market cap if all tokens were circulating | Big gap between market cap and FDV = future sell pressure |
In CleanSky, you don't need to track all of these metrics yourself. CleanSky translates your positions into clear categories — Savings, Investments, Leveraged Operations — and alerts you when risk conditions change. But understanding what these numbers mean helps you make better decisions about where to put your money in the first place.
Stop guessing. See your portfolio's real APR, position values, and risk metrics — clearly organized.