Question

Do large DeFi stablecoin deposits pay a real premium over tokenised Treasury funds, or is the visible gap a subsidy paid in reward tokens?

This matters because the Treasury fund rate is the one yield in the stack that needs no protocol risk, no reward token and no exit timing. If DeFi deposits do not beat it on base yield, then the whole category of “stablecoin yield” is the Treasury rate plus a subsidy that someone else decides to stop.

Observation

All figures are from the SwanBluechip yield map, read at 2026-10-16 14:00 UTC. The map puts every stored yield on one percent a year scale and uses tokenised Treasury funds as the reference rate.

• Reference rate: 3.59 percent, the TVL weighted stated APY of eight tokenised Treasury funds holding 8.74 billion dollars (BlackRock BUIDL, Circle USYC, Ondo yield assets, Invesco USTB, OpenEden TBILL, VanEck Treasury fund, Matrixdock STBT, Theo THBILL).
• DeFi stablecoin deposits of 10 million dollars or more, all chains, RWA projects and outlier flagged pools excluded: 4.26 percent, TVL weighted across 293 pools holding 30.4 billion dollars.
• Premium of deposits over the reference: 0.67 percentage points. Twenty four hours earlier it was 0.54 points.
• Base APY only, without reward tokens, for the same pools: 3.64 percent. Premium 0.05 points. Reward tokens make up 93 percent of the visible gap.
• Of 55 pools holding 100 million dollars or more, 36 paid above the reference rate in every stored six hour bucket and 17 never did.
• Over the previous 24 hours deposits lost 78.5 million dollars net, moving into pools that paid 4.48 percent and out of pools that paid 3.53 percent.
• For scale, BTC and ETH perp funding, median across tracked venues over the same 24 hours, annualised to 10.64 percent. Leverage holders paid far more than deposits earned.

Hypothesis

Measured on base APY, large DeFi stablecoin deposits do not pay a premium over tokenised Treasury funds, and the visible premium will compress toward zero as reward token emissions end.

The elaborated form: lending protocols price stablecoin deposits off the same short rate as Treasury funds, because borrowers can also hold Treasury funds. Any gap above that rate is either a subsidy (emissions) or a risk premium for a specific protocol. In a 30 billion dollar TVL weighted set, protocol specific risk premia average out, so what remains is the subsidy.

Why

Three mechanisms point the same way.

First, arbitrage on the lending side. A borrower who pays more than the Treasury rate plus a spread to borrow stablecoins can instead sell a Treasury fund token. Lending rates therefore anchor to the Treasury rate, and deposit rates sit below lending rates.

Second, the reward token is a marketing budget. It is paid by the protocol or the chain to attract TVL, it is denominated in a token whose price the depositor does not control, and it has an end date even if that date is not announced. The 0.62 points of the gap that come from rewards are a price someone is paying, not a yield the market is producing.

Third, the flow data shows depositors chasing the subsidy. The 24 hour net outflow went from pools paying 3.53 percent to pools paying 4.48 percent. Capital that moves for 0.95 points of mostly reward yield will move again when the reward stops, which keeps base rates from rising.

Supporting Evidence

• Base premium of 0.05 points on 2026-10-16, SwanBluechip yield map, reading Y1 (https://swanbluechip.com/yields/#deposit).
• Reward share of 93 percent of the gap, same reading.
• 17 of 55 pools of 100 million dollars or more never paid above the reference in any stored period, reading Y17 (https://swanbluechip.com/yields/#record).
• Net flow into higher paying pools, reading Y16 (https://swanbluechip.com/yields/#moves).

Counter Arguments

The strongest case against is that one reading is one point on a line. The base premium was 0.05 points on this day; it may be 0.5 points next month if borrowing demand rises with a leverage cycle. Perp funding at 10.64 percent shows that leverage demand exists right now, and some of it borrows stablecoins on chain.

A second objection is that the TVL weighted set is dominated by a few very large pools on major lenders, whose rates are lowest. A depositor who accepts smaller pools can hold a real base premium. The 36 pools that always paid above the reference show that such pools exist.

A third objection is that tokenised Treasury funds carry their own frictions: minimums, eligibility, redemption windows and chain availability. A fully liquid DeFi deposit may deserve a lower rate because it is more liquid, which would make a zero base premium the fair price, not evidence of subsidy.

Current Conclusion

On the first reading the hypothesis holds: the base premium is 0.05 points and reward tokens explain almost all of the visible gap. One reading is not a trend, so confidence stays at 0.55. The useful working rule today is to price passive stablecoin yield at the Treasury fund rate and treat anything above it as a subsidy with an unknown end date.

Unknowns

• How long the stored base APY series needs to be before a 30 day base premium can be measured with confidence.
• Whether the reward share is stable across chains or driven by one or two chain incentive programmes.
• What fraction of the 30.4 billion dollars sits in pools where the reward token has an announced end date.

What Would Change My Mind

• Confidence up: the TVL weighted base premium stays under 0.5 points for 30 consecutive days while the reference rate is stable.
• Confidence down: the base premium exceeds 0.5 points for 14 consecutive days without a matching rise in perp funding.
• Falsified: the base premium exceeds 1.0 point for 30 consecutive days while reward emissions are falling.

Next Research

• Record the base premium weekly from the yield map regime series and add the values to this document’s Observation section.
• Split the deposit set by chain and recompute the reward share, to see whether the subsidy is one chain’s budget.
• Compare the 36 always above pools with the 17 never above pools on age, chain and collateral type.

Implications

For depositors, the Treasury fund rate is the price to beat, and a deposit that only beats it with rewards is a trade with an exit date, not a place to park.

For builders, a yield product that promises more than the Treasury rate without naming the subsidy is selling the subsidy, and should be measured against the day the subsidy ends.

For Kaikim Labs, this is the first document whose numbers come straight from an instrument the lab runs. The next step is to make the weekly reading automatic, as described in Instrument, Experiment, Institution, Measurement, One Research Loop for Several Products.

Related Research

• Instrument, Experiment, Institution, Measurement, One Research Loop for Several Products
• Hyperliquid Will Still Hold at Least 40 Percent of Tracked Perp Open Interest on 2027-04-16
• AI Search, Short-Form Repurposing, and Agentic Operations Are Converging

References

1. SwanBluechip yield map, read 2026-10-16 14:00 UTC: https://swanbluechip.com/yields/
2. SwanBluechip yield map JSON with reference rate, lanes and readings: https://swanbluechip.com/api/yields/map
3. SwanBluechip data and methodology: https://swanbluechip.com/methodology/