Coinbase's growing cut of reserve income squeezes Circle's margin, ARC presale masks core shrinkage

What happened

Circle's economics are increasingly shaped by revenue sharing with distribution partners, particularly Coinbase, which absorbed $324.6 million in Q2 2026 distribution costs alone. A new Seeking Alpha analysis estimates that CRCL's margin ("keep") will drop to approximately 36.4% in Q3 as reserve income shifts further toward Coinbase, with further downside risk. The article also highlights that one-time ARC token presale revenue could temporarily inflate reported margins, masking a core business that is shrinking around 7% year-over-year. This aligns with existing deep value concerns: Circle remains heavily reliant on reserve income (94.6% of 1H26 revenue), and distributor bargaining power is eroding its unit economics. With Q3 results due November 4, investors should watch for confirmation of margin compression and whether non-reserve revenue is making meaningful progress.

Implication

Given the increasing share of reserve income going to Coinbase, investors should expect structurally lower margins unless USDC circulation accelerates or new revenue lines scale quickly. ARC token presale revenue is a one-time event that does not fix the core margin problem, so reported Q3 numbers may flatter the underlying trend. The -7% YoY core shrinkage suggests that even with stablecoin adoption, Circle's economic capture is declining. The next two quarters are critical: if Q3 and Q4 fail to show higher end-period USDC circulation and non-reserve revenue above ~6%, the stock may drift toward the bear case of $60. We maintain a WAIT rating and would consider adding only on a pullback to $68 or evidence that distribution cost intensity is peaking.

Thesis delta

The core WAIT thesis remains intact: Circle is a rate-sensitive stablecoin issuer facing rising distributor power, and today's margin estimate confirms that pressure is intensifying. The article adds a specific Q3 margin estimate and highlights ARC presale revenue as a temporary boost, but it does not change our view that the stock needs to prove sustainable non-reserve monetization before it deserves a higher multiple. We continue to await Q3 results and later filings for evidence of circulation growth and margin stabilization.