CNBC and Addepar launched the Family Office Portfolio Tracker this week, aggregating anonymized holdings data from 650 single-family offices managing roughly $800 billion in combined assets. The headline number: public equities are now the fastest-growing allocation by percentage for the cohort, while direct real estate holdings have declined for six consecutive quarters.

The tracker shows public stock exposure rising from 28% to 32% of total portfolios over the trailing twelve months, an increase representing roughly $32 billion in net inflows when applied to the sample set. Over the same period, real estate allocations dropped from 18% to 15%, a $24 billion outflow in absolute terms. The remainder moved into cash equivalents and structured credit. The data does not separate core real estate from opportunistic strategies, but industry participants attribute the shift to office vacancy overhang, refinancing cliffs on properties purchased at sub-3% rates, and the difficulty of executing exit liquidity in the current bid-ask environment.

This is not a distress sale. It is a deliberate rebalancing by offices that typically hold commercial property for 12 to 18 years and prefer to avoid forced sales into illiquid markets. Public equities offer the inverse profile: instant liquidity, daily pricing, and exposure to sectors—AI infrastructure, weight-loss therapeutics, power generation for data centers—that have no equivalent in the private markets. The rotation also reflects a generational handoff. Offices now managed by second- or third-generation principals tend to favor marketable securities over the trophy office towers their predecessors acquired in the 1990s and early 2000s.

The timing aligns with Goldman Sachs' fourth-quarter family office survey, which found 41% of respondents planning to increase equity exposure despite elevated valuations. That survey, conducted across 350 offices, noted that cash balances remain at 14% of portfolios, the highest in a decade. Offices are sitting on dry powder, waiting for entry points, but the Addepar data suggests some have already begun deploying into large-cap names with tangible earnings.

Allocators should monitor three follow-on effects. First, commercial real estate fund managers will face redemption pressure in the next 90 to 120 days as family offices meet annual rebalancing deadlines in March and April. Second, public equity inflows of this scale tend to favor mega-cap growth over small-cap value, amplifying concentration risk in the Magnificent Seven and adjacent names. Third, the shift creates a tailwind for equity-focused wealth platforms and custodians, particularly those offering tax-loss harvesting and direct indexing—services that appeal to offices managing $200 million to $2 billion in liquid assets.

The tracker will update quarterly. The next release, scheduled for late April, will show whether offices accelerated the rotation or paused after the January equity rally.