By Michael Sonnenfeldt
I've spent four decades living on both sides of the performance ledger: first as an entrepreneur delivering outlier results and later as an investor stewarding a diversified portfolio. Also, 27 years ago, I founded Tiger 21, the peer network where some of the world's most accomplished wealth creators rigorously stress--test each other's decisions.
That vantage point has taught me a simple truth: Beating the market average is possible, but only when you can articulate a real edge, and sustain the behavior and governance that edge requires.
Here I share more of my personal beliefs about the nature of investing and when it makes sense to open a family office that I've learned during my long career.
Entrepreneurship vs. investing. Entrepreneurship lives in the long tail. A handful of rockets define the outcomes, while most attempts flame out. Investing, by contrast, is a gravity game: Competitive markets tug most results back toward the mean.
Early in my career, concentrated entrepreneurial bets produced extraordinary compounding. Later, as our portfolio scaled and diversified, returns migrated toward what markets typically offer. That's not failure; it's arithmetic -- and humility. The lesson isn't that ambition is misguided, but that you must know which game you're playing. If you don't have a genuine right--tail opportunity, the bell curve will reclaim you.
What makes entrepreneurship fundamentally different from investing is the distribution of outcomes. Entrepreneurial results follow a true power--law curve. A few extraordinary successes account for nearly all the economic gains, while the majority of ventures fail or generate only modest returns.
Investment returns, however, cluster tightly around the mean because they follow a bell--curve distribution. Markets are efficient enough that most participants earn roughly the same results, with only modest variance.
The distinction between power--law entrepreneurship versus bell--curve investing is one of the most important insights of my career, and it shapes everything from return expectations to governance design to family--office strategy. Across 43 years, our career results reflect these two realities colliding: the outsized power of early entrepreneurial wins (allowing us to clock over 20% for 43 years) and the sober math of more professionalized investing.
In the most recent decade, our "new" investments, selected through a disciplined investment process, have outpaced older "legacy" investment holdings (excluding entrepreneurial ownership of certain companies), while our overall portfolio in the last decade has settled nearer to mean family office returns (in the 8% range).
That pattern is common. The governance that guards your downside also reins in the moonshots. I also don't have the energy and raw ambition that I once had. You trade some upside for durability, liquidity, transparency and sleep--at--night risk.
Taxes and estate planning. There is another dimension of wealth management that becomes increasingly crucial as returns normalize: taxes and estate planning. In our entrepreneurial years, extraordinary returns can obscure inefficiencies such as poor tax structuring, suboptimal estate planning or the lack of a long--term intergenerational strategy. But once you enter the world of lower market returns, those inefficiencies become unbearably costly, because after--tax and after--estate outcomes diverge dramatically from pre--tax perceptions.
Most of us live intellectually in a pre--tax world, but at a certain level of wealth, the measure that matters most is what reaches future generations. In that sense, we actually live in an after--income--tax and, for those focused on preserving capital for future generations, an after--estate--tax world.
Managing those exposures, sometimes with multiple coordinated experts, often becomes one of the strongest arguments for establishing a family office, because only a dedicated structure can consistently align investments, taxes, trusts and legacy planning into a coherent whole.
Build a family office? Here's the candid answer I give fellow wealth creators at Tiger 21: Build only when the benefits of control, customization and proprietary access clearly exceed both the financial and cognitive costs.
A family office is a company. Companies need strategy, leadership, talent, compliance, technology and culture. If you're unwilling to hire a CIO with a mandate, empower an investment committee that can tell you "no," and implement institutional risk management and live with the overhead that follows, then you don't want a family office. You want one or more wealth managers.
Below is a practical framework for deciding if you need a family office:
-- Investment Edge: Can you state your investment edge on a napkin -- informational, experiential, structural, behavioral or creative? If not, default to world--class external managers.
-- Scale & Complexity: Do tax, estate, liquidity and operating needs justify in--house specialists? If your life looks like a holding company with multiple entities, cross--border issues and operating businesses, a family office may be a necessity.
-- Governance Readiness: True investment governance means pre--mortems, position--sizing discipline and red--team reviews.
-- Cost vs. Value: Compare family office overhead to external management fees net of expected alpha.
-- Access: If you have proprietary private--market opportunities, in--house capability may convert access into advantage.
-- Family Mission: A family office can institutionalize legacy, education and philanthropy. Its "return" may exceed pure financial metrics.
If your edge is thin or episodic, outsource unapologetically. Pay for excellence and alignment with managers who define risk before return and whose incentives rhyme with yours. Use a barbell -- low--cost market exposure on one side with sufficient liquidity and a sleeve of truly differentiated managers or direct entrepreneurial bets on the other. Everything in the soggy middle might just provide fee drag and wishful thinking.
'Legacy' vs. 'new' holdings. Yes, legacy investments can look better because their early years were hot. The math of internal rate of return rewards early wins. But the deeper reason is strategic: Legacy positions often reflect a prior season of concentrated entrepreneurial risk--taking, while newer positions reflect professionalized diversification. Don't let a neat narrative about time decay distract you from the real question: Do we still have an edge here, and is the governance in place to harvest it without blowing up?
My core principles:
-- Intelligent discipline beats brilliance. Process is repeatable. Genius isn't.
-- Position sizing is the sharpest risk tool.
-- Liquidity buys optionality and better decisions.
-- Humility compounds. If you can't explain your edge, index proudly.
-- Create value where possible. The most reliable path to outperformance remains building something real.
Beating the average isn't a strategy. It's an outcome that appears when edge, discipline, tax efficiency and opportunity align. The market's gravitational pull is relentless.
To sum up: Build a family office if you're ready to be a builder of teams, systems, tax strategy, estate architecture and culture. Otherwise, buy the best advice you can find, keep your costs and ego in check, and reserve your risk budget for the rare moments when your edge is undeniable. That is how wealth endures, and how investors sleep at night.
Michael W. Sonnenfeldt is a serial entrepreneur, investor and philanthropist best known for founding Tiger 21 . He is the Founder and Chairman of MUUS & Company, a family office focused on investing in durable, value-aligned assets, which includes investment in sustainable energy production, climate tech and art.
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May 15, 2026 16:03 ET (20:03 GMT)
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