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Modernizing Bond Issuance: SaaS BookBuilder for DCM Primary Markets
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US Treasuries trading
End-to-End Full Issuance Lifecycle
9 Months To Deal And Tranche Go-Live
4 Integrated Platform Modules
SaaS, Cloud-Native, Multi-Tenant

Market Context

The primary bond issuance market is undergoing rapid transformation. Historically, syndicate desks have relied on fragmented, manual workflows — managing deal terms, order books, and allocations across phone calls, emails, and disconnected spreadsheets. Incumbent platforms have partially addressed this, yet limitations in flexibility, multi-tenancy, and end-to-end workflow coverage leave significant gaps for institutions seeking full lifecycle control.

The market is broadly split into two camps: institutions that have invested heavily in building proprietary bookbuild platforms, and those seeking a reliable, fully managed alternative without the overhead of in-house development and maintenance. Both face the same underlying challenge — legacy and bespoke systems struggle to keep pace with the speed, scale, and complexity of modern primary issuance. This platform was purpose-built to serve both: offering banks a polished, enterprise-grade SaaS solution they can onboard and operate immediately, while delivering the depth and flexibility that sophisticated institutions demand.

Industry Challenges

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Operational
- Legacy bookbuild platforms have not kept pace with modern issuance workflows, leaving syndicate desks reliant on fragmented, disconnected processes - No single system of record across deal setup, order management, allocation, and ticketing — each stage handled in isolation - Multiple user personas (Syndicate, DCM, Sales, Operations, Issuers) require granular, role-based permissioning that legacy tools cannot support - Order book visibility gaps between syndicate and sales teams create reconciliation breaks and delayed allocation decisions
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Technical
Building a secure, multi-tenant platform that isolates data and permissions across competing financial institutions is a complex architectural challenge Banks face significant friction migrating away from entrenched legacy platforms, including historical deal and order data dependencies Cloud adoption resistance and on-premise legacy dependencies create barriers to deploying modern, scalable bookbuild infrastructure Onboarding multiple institutions onto a shared platform requires flexible configuration to accommodate varying workflows and permissioning models

Operational

  • Legacy bookbuild platforms have not kept pace with modern issuance workflows, leaving syndicate desks reliant on fragmented, disconnected processes
  • No single system of record across deal setup, order management, allocation, and ticketing — each stage handled in isolation
  • Multiple user personas (Syndicate, DCM, Sales, Operations, Issuers) require granular, role-based permissioning that legacy tools cannot support
  • Order book visibility gaps between syndicate and sales teams create reconciliation breaks and delayed allocation decisions

Technical

  • Building a secure, multi-tenant platform that isolates data and permissions across competing financial institutions is a complex architectural challenge
  • Banks face significant friction migrating away from entrenched legacy platforms, including historical deal and order data dependencies
  • Cloud adoption resistance and on-premise legacy dependencies create barriers to deploying modern, scalable bookbuild infrastructure
  • Onboarding multiple institutions onto a shared platform requires flexible configuration to accommodate varying workflows and permissioning models
Our Solution
We designed and delivered a cloud-native, multi-tenant SaaS BookBuilder platform covering the complete DCM primary issuance lifecycle. Built for rapid bank onboarding, the platform enables institutions to go live quickly on a shared, secure infrastructure — without the cost and complexity of building or maintaining proprietary bookbuild systems.
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Deal & Tranche ● LIVE
Structured deal creation and multi-tranche management with real-time term sheet distribution, document control, and a full audit trail across all participants.
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Sales Order Book
Digital order collection and live book management, replacing manual aggregation with a real-time, permissioned order book accessible to syndicate desks and sales teams.
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Bill & Deliver
Automated trade confirmation, allocation distribution, and billing instruction generation with full audit trail and regulatory compliance support.
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Reconciliation
Automated matching of orders, allocations, and settled positions with exception management workflows and cross-system reconciliation for regulatory and audit purposes.

Outcomes
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Single source of truth
for deal terms across all authorized participants — errors and dual-entry eliminated
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Reduced syndicate desk effort
through automated deal, tranche, and order workflows
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Deal & Tranche live
Built from scratch, modular delivery, immediate value
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Extensible architecture
supports full lifecycle rollout without re-platforming

Why 28Stone

  • Deep DCM Domain Expertise — hands-on delivery across deal, order book, and settlement workflows
  • Proven BookBuilder Track Record — live implementations at major financial institutions, peer-referred
  • Open SaaS Architecture — multi-tenant, secure, and built for regulatory compliance from day one
  • Modular Delivery Model — incremental go-lives with measurable value at every phase
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28Stone is a software consulting company for the financial services industry headquartered in New York, NY, USA
28Stone is a software consulting company for the financial services industry headquartered in New York, NY, USA
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