Curriculum·S201 Market Structure and Price Formation·about 31 min
Price across venues
By the end of this lesson you can
- →Explain why one asset has many prices, and what has to be true for them to converge
- →Identify the frictions that let a dislocation persist, and which of them are structural
- →Trace which price a given system consumes, and what happens when that venue is the thin one
- →Check a quote against an independent venue before acting on it
Sophomore · enrolled learners
This lesson opens with The USDe dislocation on Binance, October 2025.
- What happened
- During the deleveraging event of 10 to 11 October 2025, USDe traded as low as about $0.65 on Binance spot and spent roughly 90 minutes in a range of about $0.75 to $0.98, on volume reported above 780 million tokens. Over the same period the asset held within about 0.3 percent of a dollar on Curve, where its deepest liquidity sat, and on other major venues. Reporting attributed the deviation to Binance's unified account system pricing collateral from its own thinly traded order book rather than from external oracles, so positions collateralised by USDe were valued and liquidated at the local price. The issuer processed over $2B of redemptions within 24 hours without delay, and the exchange announced it would move to external oracle data days later.
- The decision point
- There was no depeg in any meaningful sense. The asset was fully collateralised and redeemable at a dollar throughout, and it was trading at a dollar almost everywhere. What failed is that a risk engine consumed a price from a single venue's own book, and that book was thin enough that the liquidations it triggered moved it further, which triggered more.
What you will be able to answer
- →Why does one asset have many prices?
- →What determines whether a dislocation closes?
- →What is the question to ask of any risk engine?
- →What did the USDe episode demonstrate?
Orientation and Year One are open: anyone can read them without an account. From Year Two onward the lessons are for enrolled learners, because progress through the later years only means anything if it is tracked against a record.
It is free. We do not sell the list and there is nothing to buy at the end of it.
Sources and review
- https://www.21shares.com/en-eu/insights/why-did-ethenas-stablecoin-remain-stable-onchain-but-depegged-on-binance
- https://www.ccn.com/education/crypto/ethena-usde-depeg-binance-crash-explained/
- https://protos.com/binance-usde-depeg-exchange-millions/
- https://www.sec.gov/newsroom/press-releases/2023-13
Confidence medium·Volatility high·Reviewed 2026-08-05·Owner unassigned
Contested
Whether the Binance USDe move was purely a mechanical oracle and liquidity failure or involved deliberate targeting was debated at the time and has not been definitively resolved. The mechanical account is well supported and the lesson rests on it; note that the alternative reading exists.
Exact low prints and durations differ between accounts, partly because they depend on which order book and which timestamp is used, which is itself the lesson. Quote figures as reported and attach the venue.
Pricing sources used by any specific venue's risk engine change, and the exchange in this case announced a move to external oracles. Do not describe any named venue's current oracle configuration as fact; teach the question.