The Barrel Holdings Origin Story: Building a Portfolio of Agencies | EP 1
Release Date: 07/15/2025
Turning Every New Client Opportunity Into an Agency’s Compounding Asset | EP25
The AgencyHabits Podcast
Most agencies treat client work as a series of one-off transactions. But the most successful firms treat every engagement as an investment that compounds over time. In this episode, hosts Peter Kang and Sei Wook Kim introduce the concept of engagement yield: the tangible and intangible value that extends far beyond the invoice. They break down the four components of engagement yield; proof, leverage, relationships, and referrals. And explains how agencies can systematically capture this value. Peter and Sei Wook share practical strategies for turning client work into lasting assets: from...
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Why Peter Wrote a Book on Holding Companies | EP24
The AgencyHabits Podcast
In this special episode, host Sei-Wook Kim interviews Barrel Holdings co-founder Peter Kang about his new book, The HoldCo Guide: How Entrepreneurs Structure and Build a Holding Company That Lasts. Peter shares the organic journey that led him to write the book, from scaling a single agency to building a multi-agency holding company, and why no existing resource fully addressed the topic. He breaks down the core concepts every entrepreneur should understand: the spectrum between capital allocator and operational HoldCos, the critical balance of centralization vs. decentralization, and the...
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Breaking Down Agency Employee Compensation | EP23
The AgencyHabits Podcast
Compensation is more than just a number. It’s a strategic tool for attracting, retaining, and motivating talent. In this episode, hosts Peter Kang and Sei-Wook Kim unpack the full spectrum of employee compensation in an agency setting. They start by acknowledging that while pay is crucial, it’s not the only factor. Culture, management, challenging work, and company trajectory all play vital roles. From there, they dive into the core components: base salary (and how to set competitive, geographically-aware bands), benefits (health insurance, 401k, PTO, and creative perks), and both short-...
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Annual Checkup: 9 Markers to Diagnose Your Agency’s Health | EP22
The AgencyHabits Podcast
Most agencies only seek help when something is broken. But by then, the problems are often systemic. In this episode, hosts Peter Kang and Sei-Wook Kim shift the conversation from reactive fixes to proactive health. They introduce a holistic “annual checkup” framework, mapping nine critical agency functions to body parts and their vital signs: from positioning (vision) and client trust (heart rate) to revenue stability (blood pressure) and risk resilience (immune system). Drawing from their experience building and scaling Barrel, Peter and Sei-Wook explain how to spot early warning signals...
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Evolving from Managing Projects to Growing Accounts | EP21
The AgencyHabits Podcast
Growing from single-project engagements to managing multiple, concurrent work streams is a major turning point for any agency. In this episode, hosts Peter Kang and Sei-Wook Kim unpack the structural shift required to turn this complexity into a sustainable competitive advantage. Drawing from their own hard-earned lessons at Barrel, they dissect the common pitfalls like team silos, client misalignment, and leader burnout, that can derail multi-faceted accounts. Peter and Sei-Wook break down the three critical roles needed for success: Account Leadership for strategy and relationships, Program...
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How Agencies Should Think About and Manage Risk | EP 20
The AgencyHabits Podcast
In this episode, Peter Kang and Sei-Wook Kim break down how agency owners should think about risk, not as isolated problems to react to, but as ongoing exposure that needs to be actively managed. Using a simple risk matrix, they explain how to prioritize risks based on likelihood and impact, and why high-impact risks deserve disproportionate attention. They then walk through nine of the most consequential risks agencies face, from founder burnout and partner misalignment to legal exposure, cash flow insolvency, client concentration, and strategic drift. For each, they share practical ways to...
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Learning From Other Agency Owners | EP19
The AgencyHabits Podcast
Great agencies are not built in isolation. In this episode, Peter Kang and Sei-Wook Kim explore the transformative power of community and peer learning for agency founders. The hosts share their personal journey from working in a silo to actively seeking mentorship and joining dedicated communities, revealing how these connections helped them avoid blind spots, gain crucial perspective, and accelerate their growth. Peter and Sei-Wook break down specific communities that have been instrumental to their journey, including Bureau of Digital, Society of Digital Agencies (SoDA), and Collective 54....
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Why Agencies Rely on Referrals But Few Treat It as a System | EP18
The AgencyHabits Podcast
Most agencies say they rely on referrals, but few treat them as a system. In this episode, Peter Kang and Sei-Wook Kim dismantle the "hope-based" approach to referrals and lay out a strategic framework for building a consistent pipeline. Drawing from the book The Referral Code, they redefine referrals as a transfer of goodwill and share actionable tactics for intentional referral generation. Peter and Sei-Wook cover how to identify the right people to ask, the critical importance of timing your ask within a "state of appreciation," and how to craft effective, open-ended questions. They also...
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The Six Levers of Profitable Client Engagements | EP17
The AgencyHabits Podcast
Profitability is the lifeblood of any agency, yet it can feel elusive. In this episode, Peter Kang and Sei-Wook Kim move beyond surface-level tips to reveal the six fundamental levers that directly impact the bottom line of every project, retainer, and service program. They break down how pricing, staffing, engagement design, scope management, reusable IP, and automation all interlock to create or erode healthy gross margins. Drawing from their experience across the Barrel Holdings portfolio, Peter and Sei-Wook share candid examples of where profitability leaks and provide a practical...
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Scaling Your Agency Beyond $2M | EP 16
The AgencyHabits Podcast
In this episode, Peter Kang and Sei-Wook Kim dissect why agencies hit the $2M and what you can do to break through. They explain how founder-centric systems that work at a smaller scale become the primary constraint to growth, leading to breakdowns in client delivery, team management, and financial visibility. The hosts share actionable solutions, from improving onboarding and implementing debrief processes to strategically hiring for your weaknesses and deepening financial rigor. They also introduce the Agency Systems Playbook, a framework of five core systems that drive a scalable agency....
info_outlineIn this inaugural episode, Peter Kang and Sei-Wook Kim share the unfiltered origin story behind Barrel Holdings. From their humble beginnings building table-based websites in college to growing a multi-agency portfolio serving CPG brands, startups, and enterprise clients, this conversation charts nearly two decades of lessons in agency building, client service, and entrepreneurial evolution.
They walk us through key inflection points: like quitting Wall Street, bootstrapping through Craigslist hires, launching Barrel, and ultimately spinning off multiple high-performing specialized agencies.
You’ll also get a behind-the-scenes look at their first acquisition and why they’ve committed to a long-term, compounding approach to holding company success.
Key Moments
1. How a student club and side hustle led to a full-time agency career
2. What triggered the shift from full-service to eComm & Shopify specialization
3. Why spinning off legacy clients into Vaulted Oak became a lightbulb moment
4. The strategic difference between launching vs. acquiring agencies
5. How handing off CEO roles created operational leverage and personal peace
6. Their investment thesis: small, durable, cash-flowing specialist agencies
7. Why “focus” is the most underrated agency growth strategy
Real Talk Takeaways
1. Cash flow is the new growth. The best agency is a durable one.
2. Don’t cling to legacy clients, spin them off and build anew.
3. Leadership handoff works...if you prepare for it years in advance.
4. Platform plays (Shopify, Webflow) can be major growth engines.
5. A great operator is your biggest unlock post-acquisition.
Timestamps
00:00 – Welcome to Agency Habits
00:35 – How Peter & Wook started freelancing in college
02:40 – Quitting Lehman to go full-time with Barrel
05:00 – The iPad-era boom and scaling through partnerships
07:09 – Betting early on Shopify & selling themes
09:30 – Launching Vaulted Oak to support legacy clients
12:00 – Webflow’s rise & the BX Studio playbook
16:41 – Spinning up Bolster and appointing Barrel’s new CEO
21:23 – Their first acquisition: the story of Catalog
26:23 – Inside the Barrel Holdings portfolio strategy
35:23 – Why long-term cashflow matters more than quick exits
38:19 – Building community and future plans for Agency Habits
Notable Quotes
“The power of focus became crystal clear the moment we handed off CEO to someone who could give 100%.”
“We weren’t tired or burnt out after 18 years. We wanted to go deeper.”
“If the structure is right, the business runs better. Period.”
Links & Resources
Peter Kang on LinkedIn: https://www.linkedin.com/in/peterkang34/
Sei-Wook on LinkedIn: https://www.linkedin.com/in/seiwookkim/
AgencyHabits Website: https://www.agencyhabits.com/
AgencyHabits on LinkedIn: https://www.linkedin.com/company/agencyhabits/
Barrel Holdings Website: https://www.barrel-holdings.com/
Barrel Holdings LinkedIn: https://www.linkedin.com/company/barrel-holdings/