Prop Trading Power: BlockFills' Institutional Lending & Borrowing

The ability to leverage existing positions, access fiat when needed, and optimize collateral can make the difference between capturing market opportunities and watching from the sidelines. BlockFills’ collateralized lending and borrowing services provide institutional-grade solutions with flexible terms, robust security, and the high-touch service proprietary traders demand. In this guide, we explore four notable benefits BlockFills delivers to proprietary trading firms seeking to maximize their potential in digital asset markets.

1. Tailored Solutions for Inventory Management and Fiat Needs

Managing digital asset inventory and accessing fiat liquidity presents unique challenges for proprietary trading firms. BlockFills is actively involved in the overcollateralized lending market, providing institutional-grade solutions beyond standard offerings.

Overcollateralization creates a security buffer that protects both parties during market volatility. While many platforms require excessive collateral that can significantly limit capital efficiency, BlockFills offers optimized collateralization ratios that balance security with capital efficiency.

Our growing suite of product features customized terms explicitly designed for proprietary trading firms with varying inventory management and fiat needs. Whether you require short-term liquidity for trading opportunities, need to leverage existing crypto holdings without liquidating positions, or seek fiat for operational expenses, our solutions adapt to your specific requirements.
BlockFills delivers all-in pricing without hidden fees, same-day (T+0) settlements, and supports multiple fiat currencies beyond USD. Access these services through our API, Vision trading platform, or OTC desk—all backed by the same enterprise-grade infrastructure.

2. Enhanced Capital Efficiency Through Tri-Party Custody

BlockFills’ tri-party custody capabilities offer a sophisticated solution that combines institutional-grade protection with flexible margin utilization.

BlockFills maintains strategic relationships with qualified custody providers such as Zodia Custody—an FCA-registered platform backed by Standard Chartered and Northern Trust—allowing your firm to access trading liquidity while assets remain in regulated custody. This integration addresses the increasing demand from institutional clients for UK-domiciled, highly regulated custody solutions that comply with stringent regulatory frameworks.

Beyond traditional custody, BlockFills has expanded its wallet infrastructure through partnerships with non-custodial wallet providers like Fordefi, whose multi-party computation (MPC) platform enables secure access to decentralized finance across 90+ blockchains. The technology splits private keys into multiple parts distributed among different parties, eliminating single points of failure while maintaining seamless connectivity to thousands of digital applications.

3. Seamless Integration with BlockFills’ Trading Infrastructure

BlockFills provides comprehensive infrastructure integration that delivers institutional-grade speed, stability, and flexibility beyond what’s available from standard exchanges.

BlockFills’ electronic trading venue connects your operations directly to streaming prices across 50+ digital assets with deep liquidity pools that remain robust even during market volatility. Our platform powers spot trading as well as derivatives and lending—all accessible through a unified architecture that averages over $100 million in daily volume. For firms requiring direct market access, BlockFills offers both traditional OTC trading desk services and automated electronic execution with post-trade settlement options.

Advanced connectivity options include industry-standard FIX API integration—the same protocol used by major banks and hedge funds—which activates high-frequency and algorithmic trading strategies with ultra-low latency execution. For technical teams preferring modern implementations, BlockFills also offers WebSocket APIs for real-time data streaming and REST APIs for balance management and historical data access. Our technical flexibility supports proprietary trading firms regardless of their existing infrastructure or strategy requirements.

The Vision front-end trading platforms further enhance this integration by providing a unified trading experience. Vision Crypto Cloud offers a full-service SaaS solution for order management, risk control, and settlement capabilities—the same robust technology stack BlockFills uses for its own operations. The platform is accessible across desktop, Mac-native, web, and mobile environments, ensuring your team can trade anywhere, anytime.

All infrastructure components benefit from BlockFills’ Centroid Bridge integration, providing a centralized environment for price management, execution, and comprehensive reporting with smart order routing capabilities—without added processing fees or technical complexities. The enterprise-grade architecture delivers the security, speed, and reliability that proprietary trading firms desire to capitalize on digital asset market opportunities.

4. White Glove Service with Same-Day Settlement

BlockFills delivers a personalized service experience that stands in stark contrast to typical cryptocurrency exchanges. Our nimble, globally distributed team ensures that proprietary trading firms receive the high-touch service traditionally expected in institutional finance, backed by same-day settlement capabilities that keep your capital working efficiently.

BlockFills is staffed by a battle-tested team of market veterans with decades of combined experience across traditional finance and digital assets. Led by co-founders with extensive backgrounds at institutions like Deutsche Bank and Credit Suisse, our team understands the exacting standards proprietary traders expect. Institutional DNA permeates every aspect of our service model, from trade execution to risk management and position reporting.

Unlike retail-focused crypto venues, where support is often automated or outsourced, BlockFills provides dedicated account representatives who understand your specific trading strategies and operational needs. When market conditions change, or urgent situations arise, you’ll communicate directly with experienced professionals who can provide immediate, informed assistance—not generic responses from distant support centers.

Our commitment to service excellence has allowed us to forge strategic partnerships with established financial infrastructure providers like CQG, bringing institutional-grade cryptocurrency liquidity to traditional markets. As Neil Van Huis, our Partner and Chief Strategy Officer, notes, “BlockFills’ long-standing reputation of providing diverse products and strong liquidity in a safe and secure environment” is central to our approach—an approach that prioritizes the professional trader’s experience above all else.

Simplify Collateralized Lending & Borrowing with BlockFills

As a disruptive financial technology firm dedicated to serving global digital asset market participants, BlockFills has built and deployed sophisticated solutions that address the unique challenges faced by proprietary trading firms. Our multi-asset technology platform solves major liquidity fragmentation problems while providing essential services from price discovery and aggregation to electronic order matching and trade reconciliation.

Contact BlockFills to learn more about collateralized lending and borrowing solutions tailored for your proprietary trading firm.

Disclaimer: Trading OTC digital assets and crypto currencies involves substantial risk of loss and is not suitable for all investors. These products carry a high degree of risk to your capital, and it is possible to lose more than your initial investment. Only speculate with money you can afford to lose. As with any trading, you should not engage in it unless you understand the nature of the transaction you are entering into and the true extent of your exposure to the risk of loss. These products may not be suitable for all investors, therefore if you do not fully understand the risks involved, please seek independent advice. BlockFills does not service retail investors. *Derivative Products available to Qualified Counterparties Only. For US Persons, client is an Eligible Contract Participant (“ECP”) as defined in Section 1a(18) of the Commodity Exchange Act and related guidance. Non-US Persons must qualify as an Eligible Professional Client. BlockFills only provides services to customers resident in the UK who fall within an exemption available under the UK financial promotion regime (Investment professionals, High net worth individuals, High net worth companies, unincorporated associations etc. Certified sophisticated investors).

—–

Resources:

Insights

Collateralized Lending and Borrowing: 4 Benefits for Proprietary Trading Firms

1. Tailored Solutions for Inventory Management and Fiat Needs

2. Enhanced Capital Efficiency Through Tri-Party Custody

3. Seamless Integration with BlockFills’ Trading Infrastructure

4. White Glove Service with Same-Day Settlement

Simplify Collateralized Lending & Borrowing with BlockFills