Circle shares fell 17.55% in a single day after the company was removed from five major Russell growth indexes in the annual Russell rebalancing on June 26, 2026. The deleted indexes included the Russell 1000 Growth, Russell 3000 Growth, and Russell Midcap Growth. The change was described as a routine index adjustment based on established rules, but its market effect was immediate.
Index-linked selling added pressure to the stock
Because many funds and ETFs track Russell indexes, a company’s removal often forces those vehicles to sell shares to match the new benchmark composition. That kind of technical selling can hit a stock even when there is no direct change in the company’s operating performance. In Circle’s case, the reshuffle added fresh supply to the market in a short period.
The report said the move may also shrink Circle’s passive investor base. If fewer index-linked funds hold the stock, the pool of long-term institutional owners could narrow, which may widen trading spreads and increase volatility. Independent analyst Shanaka Anslem Perera said Circle’s recent weakness reflects not only new competition, but also the high-profile names backing the rival effort.
Open USD raises pressure on Circle’s core stablecoin business
At the same time, Circle is facing tougher competition in stablecoins. A new stablecoin called Open USD, developed under the Open Standard initiative, is targeting the same core market as USDC. The competitive threat drew extra attention because several close Circle partners are involved in the project, including BlackRock, Coinbase, and custodian bank BNY Mellon.
BlackRock manages about 80% of USDC reserves through the Circle Reserve Fund. Coinbase, a founding USDC partner, earns roughly $908 million per year from distribution revenue. With those institutions backing Open USD, investors are looking more closely at how durable Circle’s current partner network may be.
Revenue-sharing model and August talks come into focus
Circle’s business depends heavily on interest income from its $74 billion in cash and short-term US Treasury reserves. Open USD is expected to use a different economic structure, sharing a larger portion of interest revenue with distribution partners instead of letting the issuer retain most of it. That change could shift partner incentives in a meaningful way.
Open USD is set to launch on Base, the blockchain owned by Coinbase. Circle and Coinbase are also due to renegotiate their agreement in August, putting Circle in a sensitive position as it prepares talks with a partner now backing a direct competitor. Valuation signals are mixed as well: CRCL is trading nearly 47% below the analyst consensus target price, while Simply Wall St still considers the shares overvalued. The report also noted insider selling over the past three months as a risk factor watched by investors. Even with those issues, USDC remains liquid, compliant, and in demand, according to the article.