Patience. Discipline. Alignment.
30 years of institutional wisdom, unconstrained by the institution.
The private investment office of David Daglio, former CIO of Mellon.
The Daglio Opportunistic Strategies ETF is coming Spring 2026.
The Ultimate Alignment
Most managers launch an ETF to gather fees. We are launching a fund to house our own capital.
To found this firm, CIO David Daglio intends to execute a Section 351 Exchange upon launch, contributing the majority of his liquid net worth—appreciated securities from 30 years of investing—directly into the fund.
When you invest with Longnook, you will sit on the same side of the table as the founder.
Same fees. Same risks. Same outcome.
Conditions First. Selection Second.
Great investing requires the convergence of the right environment and the right asset.
The Macro (Conditions)
Just as a surfer checks the wind and tide, we begin with our proprietary Macro System. We analyze capital scarcity, sector washouts, and geographic flows to determine where the odds are tilted in our favor.
We do not paddle into flat oceans.
- Capital scarcity analysis
- Sector washout identification
- Geographic flow tracking
The Micro (Selection)
Once the conditions are right, we hunt for the wave. We use forensic data to identify idiosyncratic, “off-the-run” companies that the market has mispriced.
We look for the specific businesses that are poised to break out, regardless of the index.
- Forensic data analysis
- Off-the-run company identification
- Idiosyncratic mispricing detection
Institutional Wisdom, Digitized.
To execute this strategy at scale, we use a “Man + Machine” approach. Our proprietary AI Engine is a digital replication of the investment framework David Daglio refined over 30 years. It analyzes hundreds of companies daily, filtering for the perfect “conditions” and stripping away emotional bias.
The Machine finds the signal. The Human makes the decision.
From $500B to the Desolate Break.
David Daglio
Founder & CIO
David Daglio, Founder & CIO David spent three decades in institutional asset management, rising from junior analyst to CIO of a $500B enterprise at Mellon. He has managed large teams, navigated three major market crises, and served on public boards.
He founded Longnook Ventures to return to his roots: high-conviction, opportunistic stock picking, free from the constraints of the “big money” world.
From $500B to the Desolate Break.
David Daglio
Founder & CIO
David Daglio, Founder & CIO David spent three decades in institutional asset management, rising from junior analyst to CIO of a $500B enterprise at Mellon. He has managed large teams, navigated three major market crises, and served on public boards.
He founded Longnook Ventures to return to his roots: high-conviction, opportunistic stock picking, free from the constraints of the “big money” world.
The View from Longnook
“In surfing, finding the ‘desolate break’ is only half the battle. You can hike for miles, but if the wind is wrong, the ocean will be flat. Great surfing, like great investing, requires waiting for the convergence of the right location and the right conditions…”