According to FINTRX data, family offices deployed capital across 126 transactions and 117 unique companies in June 2026, continuing an upward trend from 121 transactions in May. Deals spanned pre-seed AI bets to a $12 billion technology round, with meaningful activity across healthcare, energy, and financial services. Here's a breakdown of where the capital went:
• 126 total transactions
• 117 unique companies
• 9 companies with multiple family office investors in the same round
• 23 Series A deals — the most active stage of the month
• 44 Seed and Series A transactions combined — more than a third of all activity
• 66 transactions touched the technology sector
• 22 transactions in Healthcare & Life Science — the sector's strongest month of 2026
• 18 acquisition deals, nearly all in Financial Services
• $12B — largest single transaction, Prometheus, backed by Bezos Expeditions
The largest transaction of June 2026 was for Prometheus, which closed a $12 billion round backed by Jeff Bezos' family office, Bezos Expeditions—the largest family office-backed deal FINTRX has tracked in 2026 by a significant margin. In addition, Bezos Expeditions also backed Flourish Inc. ($500M Venture), Generalist AI ($400M Series B), CuspAI ($400M Venture), and General Intuition ($320M Series A) in the same month. Five deals and multiple billions deployed from a single investor within 30 days.
Series A was the most common funding round in June with 23 deals, followed by Seed (21), Acquisitions (18), and Series B and Venture at 14 each. Seed and Series A rounds combined for 44 transactions—more than a third of all activity—a notable signal for fund managers who may assume family offices are concentrated at the late stage. Pre-Seed added another 10 transactions, bringing total early-stage activity to 54 deals, indicating that family offices are deploying across the full spectrum.
Technology appeared in 66 of 126 transactions, making it the dominant sector by a wide margin. Deals ranged from a $1.5M Pre-Seed for Polysights (YZi Labs) to DayOne's $4.5B Series C backed by Hillhouse Family Office—the second largest disclosed transaction of the month. Other notable technology deals included NinjaOne ($400M Series C, ICONIQ Capital Family Office), Ramp ($750M Series F, ICONIQ Capital Family Office), Digital Asset ($355M Venture, a16z Perennial), Canton Network ($355M Venture, a16z Perennial), and Quantifind ($200M Venture, Stephens Group). AI ran throughout the month as a consistent sub-theme, with Generalist AI, CuspAI, Jarvie AI, Prosper AI, and Probably AI all closing rounds in June.
Healthcare & Life Science appeared in 22 June transactions—up sharply from May and the sector's most active month of the year in FINTRX data. The largest deal was Cellares, which received a $327M Series D commitment from Stanley Druckenmiller's Duquesne Family Office and a separate $277M from Michal Bloomberg's Willett Advisors. Ollin Biosciences raised $330M in a Series B backed by a16z Perennial and Osanni Bio closed a $190M Series B with participation from both Invus Group Family Office and Horowitz Group.
Other notable healthcare deals included SonoThera ($125M Series B, Duquesne Family Office), Flare Therapeutics ($85M Series C, Invus Group), Contraline ($92.5M Series B, Invus Group), Ona Therapeutics ($86.6M Series B, Korys), Nura Bio ($73.8M Series B, Euclidean Capital), Lycia Therapeutics ($75M Series D, Invus Group), and Bionyra Pharma ($165M Series A, Arkin Holdings). Invus Group Family Office participated in at least five healthcare transactions in June alone.
18 of 126 June transactions were acquisitions, nearly all targeting RIAs, trust companies, and financial advisory firms. Active acquirers included Waverly Advisors (three deals), MAI Capital Management (two deals), Aprio Wealth Management (two deals), Wealth Enhancement Advisory Services, Harbourfront Wealth Management, Modera Wealth Management, Pathstone Family Office, and Mission Wealth. The sustained volume of advisory firm consolidation reflects an M&A environment that remains active well into mid-2026, with multi-family offices and wealth aggregators continuing to build scale through acquisitions.
Energy, Materials & Agriculture appeared in eight transactions. The standout was Helion Energy, which closed a $465M Series G backed by Capricorn Investment Group—one of the largest disclosed energy deals in the FINTRX dataset this year. Other energy deals included CuspAI ($400M Venture, Bezos Expeditions), Critical Energy ($22M Seed, Susquehanna Private Capital), InnovaFeed ($59M Private Equity, Creadev), and AgriAku (Convertible Note, Redbadge).
Nine companies attracted more than one family office investor into the same round in June: Cellares, Clair Health, Concord, Morpho Labs, NewOrbit Space, Orbital Inc., Osanni Bio, and Premier Lacrosse League. For fund managers, this syndication pattern is a useful signal. Rounds with existing family office participation often indicate broader appetite in a given sector or stage and can be a starting point for identifying which offices to approach next.
June's data points to several actionable conclusions. Deal volume is growing month over month. Healthcare is now clearly a priority allocation area for a meaningful subset of family offices, with Invus Group, Duquesne, and a16z Perennial all deploying aggressively in the sector. Early-stage activity is stronger than many fund managers assume, with Seed and Series A outpacing every other deal category in June. And a small number of investors—Bezos Expeditions, ICONIQ Capital Family Office, Invus Group, and a16z Perennial—account for a disproportionate share of total capital deployed, making contact-level intelligence within those organizations especially valuable.
FINTRX gives fund managers direct access to the investment activity, contact intelligence, and relationship mapping needed to identify and reach the right decision-makers across the family office channel.