Fund Structure
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Quick Answer
The deliberate strategy a venture fund uses to allocate capital across investments — including check size, number of investments, reserve ratios, stage focus, and diversification approach.
Portfolio construction refers to the framework a VC fund uses to allocate its capital strategically across investments. Key decisions include: how many companies to invest in, what initial check sizes to write, how much to reserve for follow-on investments in existing companies, at what stages to invest, and how much diversification to seek across sectors and geographies.
Fund size drives portfolio construction math: a $50M fund that writes $1M initial checks can make 25–30 investments while reserving 40–50% for follow-ons. A $500M fund might write $5–10M initial checks. The power law of venture returns (a small number of companies produce most of the returns) creates tension: should you concentrate in your best bets, or spread bets to maximize the chance of catching the next winner?
Highly concentrated funds (20–30 companies) need each investment to have unicorn potential. Highly diversified funds (100+ investments) accept that most won't work but bet on catching outliers.
In Practice
A $75M seed fund plans portfolio construction as follows: 40 initial investments at $500K–1M each, 40% of the fund reserved for follow-ons in the top 10 companies at Series A, targeting a minimum 3% ownership stake at entry.
What good looks like
Why It Matters
Portfolio construction directly shapes investor incentives. A fund concentrated in 15 companies needs each to return 20x+. A fund with 100 companies can succeed with a handful of 50x+ outcomes and a long tail of modest returns. Understanding a fund's portfolio construction helps founders anticipate how their investor thinks about follow-ons, exits, and board dynamics.
VC Beast Take
Most emerging fund managers obsess over individual deal selection but ignore portfolio construction math — a fatal mistake. The best GPs we know spend as much time modeling their portfolio strategy as they do sourcing deals. The shift toward larger fund sizes has made this even more critical, as LPs now expect sophisticated construction frameworks that can defend concentration decisions and reserve allocation. First-time fund managers who wing it usually end up with suboptimal portfolios that can't generate the power law returns LPs demand.
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What does 'reserves' mean in a VC fund?
Reserves are capital set aside by a VC fund to invest in follow-on rounds of existing portfolio companies. Most funds reserve 40–60% of their capital for follow-ons, not just initial checks.
What does a VC analyst actually do day to day?
VC analysts source deals, research markets, build financial models, write investment memos, and support portfolio companies. The role is more research-heavy and less deal-execution-heavy than banking — you're building conviction about markets and founders, not closing transactions.
What is portfolio construction in venture capital?
Portfolio construction is how a VC fund decides how many companies to invest in, at what check sizes, with how much reserve capital, to maximize the probability of fund-returning outcomes given the fund's size.
What is the power law in venture capital?
The power law describes how VC returns are extremely concentrated — a tiny number of investments (often 1–2 per fund) drive the majority of the fund's total returns. Most investments fail or return little; a few generate outsized gains.
Portfolio construction refers to the framework a VC fund uses to allocate its capital strategically across investments. Key decisions include: how many companies to invest in, what initial check sizes to write, how much to reserve for follow-on investments in existing companies, at what stages to...
Understanding Portfolio Construction is critical for founders navigating the fundraising process. It directly impacts deal terms, valuation, and the relationship between founders and investors.
Portfolio Construction falls under the fund-structure category in venture capital. This area covers concepts related to how venture capital funds are organized, managed, and governed.
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