Share this article
Cowen to Offer Crypto Custody Services Through $25M Stake in PolySign
This comes as part of a PolySign's $53 million Series B funding round that Cowen led.
Updated May 9, 2023, 3:19 a.m. Published May 13, 2021, 1:18 p.m.
Investment bank Cowen Inc. said it will offer crypto custody services to hedge funds and asset managers.
Don't miss another story.Subscribe to the Crypto Daybook Americas Newsletter today. See all newsletters
- The New York-based firm will provide custody services for cryptocurrencies and other digital assets in partnership with Standard Custody & Trust, a unit of digital asset infrastructure firm PolySign, according to an announcement Thursday.
- As part of the agreement, Cowen took a $25 million stake in PolySign as part of the PolySign's $53 million Series B funding round that Cowen led.
- Cowen was joined in the funding round by London-based crypto wallet provider and exchange Blockchain.com and others.
- As part of Cowen's investment, Dan Charney, a Cowen co-president, and John Holmes, Cowen's chief operating officer, will join PolySign’s board
- Standard Custody & Trust provides PolySign's custody services by virtue of the trust charter granted by the New York Department of Financial Services earlier this month.
- PolySign's leadership team includes CEO Jack McDonald and President and founder Arthur Britto, who previously co-founded Ripple Labs, the company behind the cryptocurrency, XRP.
- Cowen, which was founded in 1918, holds almost $12 billion in assets under management.
See also: UK Asset Manager Baillie Gifford Invests $100M in Blockchain.com
More For You
Protocol Research: GoPlus Security

What to know:
- As of October 2025, GoPlus has generated $4.7M in total revenue across its product lines. The GoPlus App is the primary revenue driver, contributing $2.5M (approx. 53%), followed by the SafeToken Protocol at $1.7M.
- GoPlus Intelligence's Token Security API averaged 717 million monthly calls year-to-date in 2025 , with a peak of nearly 1 billion calls in February 2025. Total blockchain-level requests, including transaction simulations, averaged an additional 350 million per month.
- Since its January 2025 launch , the $GPS token has registered over $5B in total spot volume and $10B in derivatives volume in 2025. Monthly spot volume peaked in March 2025 at over $1.1B , while derivatives volume peaked the same month at over $4B.
More For You
Crypto's 'Best Days Are Ahead': Tom Lee's Bitmine Immersion Adds $320M of Ether

The company is likely sitting on about $3 billion in unrealized losses on its holdings of nearly 4 million ether tokens.
What to know:
- BitMine Immersion Technology (BMNR) acquired 102,259 ether last week, valued at around $320 million, increasing its holdings to nearly 4 million tokens.
- The company currently has about $3 billion in unrealized losses on its ETH investments.
- Chairman Thomas Lee expressed optimism about the future of crypto, citing positive legislation and Wall Street support as reasons for continued accumulation.
Top Stories












