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Fidelity Investments launched the Fidelity Reserves Digital Fund (FYMXX) on June 15, a government money market fund built specifically to hold stablecoin reserves under the GENIUS Act, joining a growing queue of traditional finance giants racing to own the plumbing of the regulated stablecoin economy.
Currently, the total stablecoin market cap sits at over $315Bn, according to DefiLlama data. Tether’s USDT is the leading stablecoin, with a $186Bn market cap, making it the third-largest digital asset overall.
Circle’s USDC stablecoin is the second-largest of its kind, with a near-$75Bn market cap, making it the fifth-largest digital asset by market cap, per CoinGecko data.
Fidelity Launches GENIUS Act Ready Stablecoin Reserve Fund
Fidelity has launched a new money market fund designed specifically for stablecoin issuers.
The Fidelity Reserves Digital Fund launched on June 15 and invests only in reserve assets permitted under the GENIUS Act… pic.twitter.com/DQEgW6AthV
— BSCN (@BSCNews) June 19, 2026
GENIUS Act News: What is FYMXX and How Does It Work?
The fund is structured as a Rule 2a-7 government money market fund – the same SEC-regulated vehicle type that has long underpinned institutional cash management, but purpose-built for stablecoin issuers operating as Permitted Payment Stablecoin Issuers (PPSIs) under the GENIUS Act, which was signed into law in July 2025 as the first comprehensive federal framework for payment stablecoins in the United States.
FYMXX invests exclusively in GENIUS-permitted reserve assets: US Treasury bills, notes, and bonds with maturities of up to 93 days, cash, and overnight repurchase agreements backed by Treasuries. That ultra-short duration profile keeps interest-rate risk to a minimum and meets the GENIUS Act’s daily and weekly liquidity thresholds.
The fund targets a $1.00 net asset value (NAV), carries a management fee of 0.25%, and requires a $1M minimum investment from institutional investors – though Fidelity reserves the right to waive that floor.
Fidelity’s own prospectus language is unambiguous about the target customer: “Fund shares are expected to be held primarily by one or more stablecoin issuers as all or a portion of the reserve assets that back the stablecoins issued to their customers.”
A Federal Register notice also confirms that the fund may hold USDC, Circle’s dollar-pegged stablecoin, as its sole stablecoin exposure, underscoring USDC’s strengthened institutional standing in the post-GENIUS regulatory era.
4/ Fidelity’s Reserves Digital Fund (FYMXX) came to market on 18 June.
No corresponding press release. No external seed investor disclosed. All shares at offering held by Fidelity and its affiliates, per the prospectus.
The quietest entry in the category yet.
— Sandmark (@sandmark_news) June 18, 2026
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TradFi’s Race to Control Stablecoin Reserve Infrastructure
Fidelity’s launch marks its entry into a competitive arena among top asset managers. Following State Street’s introduction of a GENIUS-aligned stablecoin reserves money market fund on June 8, BlackRock, Goldman Sachs, and BNY Mellon have also initiated similar funds in 2024–2025, with BlackRock’s Circle Reserve Fund predating the GENIUS Act.
The Crypto Council for Innovation views these funds as vital to linking traditional finance with compliant, dollar-backed stablecoins, suggesting that competition will enhance transparency and risk management.
While some see Fidelity’s entry as a catch-up, its scale could position it as a leader once major payment stablecoins adopt GENIUS-compliant frameworks over the next 12 to 18 months.
However, critics warn of potential centralization risks and regulatory challenges that could arise from concentrating stablecoin reserves among a few large US managers, raising concerns among DeFi participants about the implications of stablecoin regulation for on-chain capital flows.
(SOURCE: CoinGecko)
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What Comes Next for Stablecoin Regulation and Reserve Management
The passage of the GENIUS Act has formalized existing practices, allowing USDC and others to use SEC-registered 2a-7 funds as backing for stablecoins, establishing a statutory standard. With a 0.25% management fee in a market expected to reach trillions, asset managers stand to gain significantly.
The next step is tokenization, where blockchain-native share classes of money market funds may emerge once SEC guidance is provided, enabling compliant on-chain use.
Major firms like BlackRock and Goldman Sachs are already entering yield-bearing crypto products, illustrating the integration of traditional finance into the digital asset space.
For stablecoin holders, this means their reserves are managed by the same firms as their 401(k) funds, resulting in greater regulation, transparency, and integration with the traditional financial system than ever before in crypto’s history.
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