Diesslin Group, Inc.'s $251.64M 2025Q4 Filing Prints a 66.61% Top-5 Cluster

Diesslin Group, Inc. reported $251.64M for 2025Q4, and the cleanest takeaway is that top-5 positions account for 66.61% of the filing. The filing is anchored by JAAA, QQQ, EDV, with BRK/B alone accounting for 23.93% of the book.

TL;DR

• Filing size: $251.64M across 54 reported positions.
• Top holding: BRK/B is the largest line at 23.93% of the filing.
• Top-5 concentration: The top five positions add up to 66.61%.
• Quarter-over-quarter move: Reported 13F value changed None versus the prior quarter.
• Portfolio turnover: 54 new positions and 0 exits versus the previous quarter.
• Interpretation: The cleanest way to read this filing is top-5 positions account for 66.61% of the filing.

Filing Snapshot

Why This Filing Stands Out

Diesslin Group, Inc. is not just large. It is readable. The latest filing shows BRK/B at 23.93%, top-five concentration at 66.61%, and top-ten concentration at 86.00%. That combination tells investors whether they are looking at a diversified allocator, an ETF wrapper, or a book where a handful of ideas drive most of the exposure.

For readers trying to separate noise from signal, the right question is not simply whether the fund is big. The better question is how much of that scale is concentrated in names such as JAAA, QQQ, EDV, VOE, SMMD, and whether the quarter-over-quarter move reflects deliberate positioning or just market drift.

Top Holdings Driving The Narrative

The top of the filing is where the character of the portfolio becomes obvious. When a name like BRK/B sits at 23.93%, it shapes the whole interpretation of the quarter. That is especially true when the next few names absorb most of the remaining risk budget rather than leaving the portfolio evenly spread across hundreds of smaller positions.

What Changed From The Prior Quarter

Compared with the previous filing, Diesslin Group, Inc. recorded 54 new positions and 0 exits. The overall 13F value moved from None to $251.64M, which translates to None quarter over quarter.

Those moves matter because they tell you whether the quarter was driven by a few aggressive reallocations or by smaller trims inside an otherwise stable core.

How Investors Should Read The Concentration

If you only look at raw AUM, filings like this can appear interchangeable. They are not. A top-five share of 66.61% means portfolio behavior will be driven by a relatively narrow set of exposures compared with a lower-concentration allocator. That distinction matters when investors try to infer conviction, benchmark sensitivity, or how much damage one wrong call can do to the overall book.

In practical terms, this is why investors should read holdings like JAAA, QQQ, EDV, VOE together rather than in isolation. The portfolio-level story is not just which names appear, but how heavily they dominate the filing.

AUM History

The AUM history chart is the best way to see whether the latest quarter is part of a smooth trend or a sharp break in pattern. Here, the latest filing sits at $251.64M after a prior-quarter base of None. That gives investors a better sense of whether the manager is compounding steadily, resetting quickly, or reacting to one unusual reporting period.

FAQ

What did Diesslin Group, Inc. buy in 2025Q4?

The filing was led by BRK/B and a top group that together accounted for 66.61% of reported value.

How concentrated is Diesslin Group, Inc.'s 13F portfolio?

The largest position was BRK/B at 23.93%, while the top five positions added up to 66.61%.

Did the portfolio expand or contract quarter over quarter?

The filing moved from None to $251.64M and recorded 54 new positions against 0 exits.

What should investors focus on first in this filing?

Start with the top holding, the top-five concentration, and the quarter-over-quarter AUM move. Those three numbers usually tell you more than the raw holdings count.