Miles Dieffenbach: Inside Carnegie Mellon’s $4BN Endowment & The Math Behind DPI, TVPI, Illiquidity

CMU Endowment Allocation Structure:

• Total assets under management: $4 billion.
• Asset class split: 85% equity, 15% fixed income.
• Private markets allocation: 50% of the total portfolio (venture, PE, real estate, natural resources, private credit).
• Public markets allocation: 50% of the total portfolio (hedge funds, public equities, fixed income).
• Venture capital exposure: Slightly less than 25% of the total endowment (approximately half of the private markets bucket).
• Relative positioning: Overweight venture by 5–10 percentage points compared to peers; underweight hedge funds and real assets; private markets overall is in line with the market.

Venture Capital Performance Data & Market Reality:

• Median IRR for mature venture funds (1998–2016 vintages) is approximately 8% net.
• Top quartile median IRR is approximately 15%, but returns often fail to consistently beat the Public Market Equivalent (PME).
• Top quartile MOIC (Multiple on Invested Capital) is roughly 2.5x over 10–15 years.
• Top quartile DPI (Distributions to Paid-In Capital) over 15 years for 1998 vintages is 1.8x.
• Current market conclusion: Most LPs are not receiving compensation commensurate with the high risk taken in venture capital.
• PME benchmark for venture: The NASDAQ 100 (QQQ) has been the best-performing PME globally over the last 25 years.

Strategic Investment Criteria & Manager Selection:

• Access vs. Picking: For multi-stage firms deploying large checks, the strategy is weighted 70% access and 30% picking; for small early-stage funds, it is 80% picking and 20% access.
• Fund Size Sweet Spots: Commitments range from $10 million to $80 million for early-stage funds; $400 million to $1 billion for growth/late-stage funds, dependent on GP track record.
• Investment Horizon: New manager relationships are backed for a minimum of three funds (approx. 25 years), twice the length of an average US marriage.
• LP Concentration Limits: Ideal top LP exposure is capped at 10%; anything above 30% is considered excessive concentration risk.
• Red Flags: Selling management company equity is deemed a massive red flag due to misaligned incentives; "founder-friendly" as a sourcing criterion is not prioritized.
• Partnership Risks: The primary drivers of partnership breakdown are misaligned incentives and disparity in work ethic; the industry is currently seeing an unprecedented rate of partnership dissolutions.

Critique of Large Multi-Stage Funds:

• The Math of Scale: A $7 billion multi-stage fund targeting 4x net returns would require generating $800 billion in exit value (IPO/M&A) to succeed, exceeding the total exit value of the entire 2021 IPO year ($850 billion).
• Fee Structure Obsolescence: The speaker argues that growth-stage funds acting as passive public-equity-like investors should charge public market fees (1-10 or 0-10) rather than the standard 2-20 or 3-30.
• Alignment Breakdown: When GPs manage $15B+ in AUM, they can earn hundreds of millions in fees for passive management, creating a divergence between GP/LP incentives.
• Performance Outliers: Index Ventures is cited as the single best performer at scale, praised for reducing fund size post-2021 and maintaining high performance.

Liquidity, Fundraising, and Public Market Opportunities:

• Fundraising Environment: 2024 is projected to be the lowest fundraising year since 2017 in the US and 2016 in Europe due to a lack of liquidity.
• Capital Return: CMU is currently self-funding its private equity book, with distributions covering capital calls for the first time since 2021.
• Exit Pipeline: Significant liquidity events are expected in 2026, including Circle, Figma, Dream Games, and CoreWeave.
• IPO Call to Action: The speaker urges venture-backed companies to go public now, citing that public market capital is no longer "cheaper" than private capital for high-growth entities.
• Valuation Disconnect: Many 2021-era companies are trading significantly below their IPO prices, while current public markets price risk more rationally (e.g., Circle, Palantir, Cloudflare).

Sector-Specific Outlooks (AI, China, Nvidia):

• AI Bubble: The speaker predicts a bubble pop in AI, noting that companies like OpenAI are burning $5–10 billion annually with massive CapEx requirements; no bubble-free technological revolution in history has been sustained without a correction.
• China Venture: Investment is restricted by US executive orders barring AI/semiconductor investment; a major misalignment exists where USD funds cannot invest in the same assets as RMB funds (often government-backed).
• Nvidia Analysis: Viewed as a cyclical hardware business with potential for a 70% drawdown in a recession scenario due to advertising cyclicality and inventory cycles.
• Hyperscaler M&A: Google, Meta, Microsoft, and Amazon possess $600B in combined operating cash flow but face regulatory hurdles; they may opt for talent/tech licensing over M&A due to acquisition review delays (12+ months) in a volatile AI landscape.

Due Diligence Methodologies & LP Governance:

• Data Access: CMU requires trending revenue, gross profit, and free cash flow data for the top 10 NAV positions of every underwritten fund.
• Reference Work: Conducts 20 reference calls per new fund, prioritizing "off-sheet" references to identify interpersonal and partnership risks.
• Yale/CalPERS Case Study: Highlighted the risk of secondary sales of long-term venture funds (13-year vintages) where massive "fat tail" outcomes (e.g., Circle) materialize years after the sale decision.
• Attribution Verification: The speaker builds internal attribution tables to verify that top partners credited with home-run deals were actually the decision-makers, rejecting GP-provided attribution if it is misleading.

Anecdotes & Specific Market Observations:

• Personal Context: The speaker survived lymphoma at age 26, adopting a mindset that "success is 10% what happens and 90% how you react."
• GP Behavior: A 2023 manager was questioned for holding OpenSea at a $13B valuation, only to promise a policy revision later.
• Unique Deal Dynamics: A partnership with Long Journey Ventures was solidified after a post-dinner ping-pong match where the speaker won.
• Top Performer Attribution: Union Square is cited as the firm with the best "selling" discipline (exiting positions proactively).
• Best Fund Return: A fund out of China generated over 20x net returns to LPs.
• Fundamental Shift: The speaker has shifted investment philosophy to heavily over-index on "people" and qualitative reference checks rather than quantitative data or market trends alone.