01
List
Sellers list one or more loan assets for sale in open or sealed-bid auctions, with structured data and supporting collateral.
Debt Trading
at Scale.
Paperstac is a secure, institutional-grade auction marketplace and closing platform for buying and selling whole loans.
Modernizing Debt Trading Through Secure, Intelligent Marketplaces
Registered Participants0k+
Trades Facilitated0k+
Monthly Trades0-50
Founded in 2015
Trusted in the Secondary Mortgage Market
For years, Paperstac has brought structure, security, and consistency to the secondary mortgage market, shaped by firsthand experience from people who know the process from the inside.
Featured in
Centralized marketplaces
Paperstac operates centralized marketplaces for buying and selling mortgage notes.
Built to scale
The platform serves individual investors, funds, banks, and institutional sellers.
Enterprise-grade security
Proven workflows ensure faster, more efficient transactions with full audit trails.
Standardization
Reduces friction, lowers transaction costs, and enables consistent, repeatable execution.
How the Platform Works
02
Bid
Qualified bidders review loan details and collateral, ask questions, and submit competitive bids through the platform.
03
Close
Sellers and winning bidders complete closings on or off platform with efficient document and transfer handling.
Two Marketplaces. One Platform.
Lower-Volume Trades
Member Marketplace
Individual investors and smaller funds
Tap into the full Paperstac network with direct, self-service execution.
- Open to all verified members
- List, bid and close directly
- Free to join and list
High-Volume Trades
Institutional Marketplace
Banks and institutions
Access a curated marketplace with dedicated trade desk support.
- Optimized for large, complex transactions
- Curated participation and listings
- Operated by the Paperstac Trade Desk
Industry-Low Fees
0.5% – 2.0%
of final sale price
graduated based on transaction size
Simple, Success-Based Pricing
As low as half a percent on large transactions.
You only pay when a transaction closes. Sellers control how transaction fees are allocated between buyer and seller.
Enterprise-Grade
Security & Infrastructure
At the core of the platform is enterprise-grade security and infrastructure, purpose-built to meet the demanding security, compliance, and reliability needs of institutional market participants.
Bank-Level Data Security
All data is encrypted at rest and in transit, with strict access controls and continuous monitoring to protect sensitive loan, borrower, and transaction information.
Compliance-Ready Controls
Paperstac maintains SOC 2 Type II compliance, identity verification, and complete audit trails — supporting internal controls, regulatory requirements, and third-party risk reviews.
Reliable, Proven Infrastructure
Built to operate continuously at scale, Paperstac supports active trading with high availability, resilient systems, and infrastructure trusted by banks, servicers, and institutional investors.
Ready to Start Trading?
Tap into a trusted network of note buyers and sellers who rely on Paperstac to source opportunities, close deals, and transact with confidence.
