Swiss Bank Sygnum Boosts Institutional Access to Sui

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Swiss digital asset bank Sygnum has announced the expansion of its blockchain-related services with the launch of institutional-grade custody, spot trading, derivatives trading, and lending solutions for the Sui network. The offerings are backed by SUI, the native token of the Sui blockchain, and are aimed at professional investors and asset managers.

According to Sygnum, custody and trading services for SUI are now live. Staking services are expected to be introduced in the coming weeks, while SUI-collateralized Lombard loans are scheduled to launch in the fourth quarter of 2025. Lombard loans are credit facilities secured by pledged collateral.

The bank stated that all SUI holdings under this program will be kept off Sygnum’s balance sheet and will be structured to be “bankruptcy remote,” meaning the assets will remain safeguarded in the event of the bank’s insolvency. This development follows Sygnum’s July 2025 integration of SUI into its platform, which the bank said made it the first Swiss bank to fully support the token.

The Sui blockchain, developed by Mysten Labs, employs parallel transaction processing to enhance scalability and supports a variety of applications, including decentralized finance (DeFi), payments, real-world asset tokenization, and gaming. The network has also developed Bitcoin finance (BTCfi) capabilities, which allow Bitcoin holders to participate in DeFi activities while maintaining control over their assets.

Christian Thompson, managing director of the Sui Foundation, said the partnership with Sygnum would increase the project’s engagement with institutional investors. Sygnum CEO Mathias Imbach stated that the bank aims to operate “at the intersection of digital assets and traditional finance” and to provide clients with opportunities within a regulated framework.

Sygnum already offers blockchain-based lending services through its Lombard loan program, which accepts over 20 cryptocurrencies as collateral, including Bitcoin (BTC), Ethereum (ETH), Solana (SOL), Polygon (POL), and XRP. In May 2025, the bank expanded the program to include staked Solana, enabling clients to use yield-earning assets as loan security. Sygnum operates under banking and digital asset licenses in Switzerland, Singapore, Abu Dhabi, Luxembourg, and Liechtenstein.

In a separate development, Nasdaq-listed Mill City Ventures III announced plans to raise an additional $500 million to expand its holdings of SUI tokens. Earlier in August 2025, the company raised $450 million, which it used to acquire 76.2 million SUI tokens valued at approximately $276 million. The remaining funds from that round were allocated to its short-term lending operations.

Mill City Ventures stated that the latest fundraising, managed by Alliance Global Partners, is intended to increase its stake in the Sui ecosystem, with a focus on supporting blockchain applications in artificial intelligence and gaming.