What Qsi Consulting, Inc. does

QSI Consulting, Inc. is a privately held B2B economic and forensic consulting firm founded in 1999 and headquartered in O'Fallon, Missouri. The firm provides economic consulting, forensic accounting and economic modeling, expert witness and litigation support, taxation, financial advisory, and auditing services to clients in network-intensive industries - principally telecommunications (wireline, wireless, cable, satellite), with extensions into energy and maritime transportation. Its core offerings, organized into seven practice areas, are delivered by a small team of senior consultants (averaging 25+ years of experience, with 180+ combined years) whose value proposition rests on individual expert credentials rather than a technology platform; notable technical assets include computerized cost models for telecommunications networks and an in-house database tracking federal, state and local taxes, fees and surcharges applicable to government telecom invoices.

The firm serves enterprise communications carriers (AT&T, Comcast, Charter, T-Mobile, Lumen/Level 3, Zayo, Dish, Sirius XM), federal agencies (U.S. GSA, Department of Defense), state regulators and taxing authorities (Pennsylvania Department of Revenue, Minnesota Department of Commerce), law firms (Davis Wright Tremaine, Kelley Drye, Eversheds Sutherland), and select energy and maritime clients (Crown Castle, Young Brothers). Commercial terms are project-based or billable-hour engagements; the firm has won three consecutive five-year GSA contracts and team members have collectively testified in hundreds of state, federal, and international regulatory proceedings.

In 2024, QSI became a portfolio company of Aperture, a national forensic services firm, while continuing to operate under the QSI brand. Founded by August Ankum and Michael Starkey, the firm remains founder/partner-led, with offices spanning Missouri, Illinois, Colorado, Pennsylvania, Oregon, and New Jersey to support a North American client base that includes Puerto Rico and Canada.

Name

Qsi Consulting, Inc.

Legal name

QSI Consulting, Inc.

Website

https://www.qsiconsulting.com

Company type

Private

Founded year

1999

Operating status

Acquired

Headcount range

11–50 employees

Short description

QSI Consulting is a B2B economic consulting and forensic accounting firm serving telecommunications carriers, federal and state government agencies, law firms, and select energy/maritime clients with expert witness, litigation support, cost modeling, and regulatory advisory services delivered by a small team of senior partners.

Ownership category

akta.pro rank

Product category

Economic and Financial Consulting

NAICS

Other Management Consulting Services (541618), Management Consulting Services (54161), Administrative Management and General Management Consulting Services (541611)

SIC

Services-Management Consulting Services (8742), Services-Engineering, Accounting, Research, Management (8700), Services-Engineering Services (8711)

akta.pro primary industry

Telecommunications & Network Engineering Consulting (BPAHAIAH)

akta.pro secondary industries

Public Sector & Policy Consulting (BPAHACAN), Financial Management & Performance Improvement Consulting (BPAHACAF), Risk, Compliance & Internal Controls Consulting (BPAHACAJ)

Keywords

• Economic consulting services
• Forensic accounting services
• Telecommunications regulatory consulting
• Expert witness testimony
• Utility rate consulting

Headquarters

HQ city

Fallon

HQ country

United States

HQ region

North America

Offices8 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Technology or R&D, Operations, Marketing or Sales

Revenue model

1. Professional Consulting Services: B2B consulting engagements providing economic consulting, expert witness services, litigation support, regulatory affairs, forensic accounting, and financial advisory services to telecommunications companies, government agencies, and law firms. Revenue is generated through billable consulting hours and project-based engagements.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels1 record

Core offering

QSI Consulting is an economics and management consultancy providing economic consulting, forensic accounting, expert witness testimony, taxation, financial advisory, and auditing services to communications, cable/satellite/media, energy, and maritime transportation clients. The firm delivers custom professional consulting engagements staffed by senior experts, with practice areas spanning cost-of-service analysis, damages calculations, regulatory policy advisory, litigation support, and telecommunications taxes/fees/surcharges analysis for enterprise and government clients.

Product overview

QSI Consulting is an economics and management consultancy that provides forensic economic and accounting consulting along with expert witness services to stakeholders in network-intensive industries. The firm operates as a unified service offering organized into seven practice areas: Economic Consulting Services (with emphasis on network industries including communications, energy, and maritime), Forensic Accounting and Economic Modeling Services, Litigation Support and Witness Training, Financial Advisory and Auditing Services, Taxation Services, Communications and Media Consulting, and Transportation and Energy Consulting. Rather than a platform-plus-modules architecture, QSI delivers its expertise through professional consulting engagements staffed by its team of experts who have testified before regulatory commissions, courts, and arbitrators across the United States and internationally.

Differentiator

Problem solved

Functional benefit

Products and services

• Economic Consulting Services
• Forensic Accounting and Economic Modeling Services
• Litigation Support and Witness Training
• Financial Advisory and Auditing Services
• Taxation Services
• Communications and Media Consulting
• Transportation and Energy Consulting

Quantifiable outcome

• Achieved millions of dollars in cost savings for the Federal government through TFS analysis and contract optimization
• +5 more outcomes

Named customers20 records

Segments9 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

One partnership is on record.

• Aperture (National Forensic Services Firm)flagship/coreStrategic or Co-development Partner · 1 January 2024QSI Consulting, Inc. has joined Aperture, a national forensic services firm. QSI has become one of Aperture's portfolio companies, joining a national firm with the same reputation for providing full-service expert analysis, but with broader reach and deeper bench. QSI will continue to support the legal community with even more strength, consistency, and scale. The acquisition represents QSI transitioning from an independent consulting firm to part of a larger national organization.

Scale indicators8 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Analysis Group: Large economic and financial consulting firm providing expert testimony, regulatory economics, and litigation support across network industries including telecommunications. Highly comparable to QSI in service offerings, client base (carriers, law firms, government), and expert-witness delivery model.
• NERA Economic Consulting: Global economic consulting firm specializing in regulatory economics, antitrust, and litigation support with strong telecommunications and energy practices. Directly competes with QSI for expert testimony, cost modeling, and rate-case engagements before regulatory commissions.
• Charles River Associates: Global consulting firm with deep expertise in energy, telecommunications, and network industries economics, providing expert witness services and regulatory consulting. Competes directly with QSI in telecom regulatory proceedings and damages calculations.
• The Brattle Group: Economic and financial consulting firm with strong telecom, energy, and utility regulation practices offering expert testimony and regulatory economics. Highly comparable in terms of network-industry focus and testimony-driven delivery model.
• Cornerstone Research: Economic and financial consulting firm providing expert testimony and litigation support across complex regulatory and commercial matters including telecommunications. Comparable in expert-witness delivery, though typically larger scale.
• Concentric Energy Advisors: Specialized management and economic consulting firm focused on the energy and telecommunications industries, providing expert witness services and regulatory consulting. Directly comparable to QSI's energy and telecom regulatory practice.
• Berkeley Research Group: Global consulting firm providing economic, financial, and regulatory expertise including testimony in telecommunications rate cases and utility regulation. Comparable expert-witness and forensic accounting services.
• Compass Lexecon: Leading economic consultancy providing expert testimony and regulatory economics across telecommunications, energy, and network industries. Direct competitor in telecom rate cases and cost modeling work.
• Economists Incorporated: Economic consulting firm specializing in regulatory economics, antitrust, and litigation support with telecom and network industry expertise. Comparable in scale and testimony-driven service model to QSI.
• Secretariat Advisors: Global advisory firm providing expert consulting, testimony, and forensic accounting across regulated industries including telecommunications. Closely comparable in expert-witness delivery and network-industry focus, and like QSI, has pursued inorganic growth to scale its platform.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Qsi Consulting, Inc.