DOSSIER · 13F-HR · Q2 2026

Birnam Oak Advisors, LP

$616M in tracked AUM across 60 positions as of Q2 2026.

BO
CIK 0001997245 · last filed Jun 30, 2026
Total AUM
$616M
as of Q2 2026
Holdings
60
positions
Whale Score
61
61
tracked
Activity
no data
changes this Q
AI Analysis · Q2 2026
Comprehensive Analysis of Birnam Oak Advisors, LP SEC 13F Filing
Portfolio Overview

Birnam Oak Advisors, LP has undergone a significant portfolio restructuring during the quarter ended September 30, 2025. The firm executed a decisive pivot, reducing total portfolio assets by 40.9% from $338.50 million to $200.18 million. This reduction was not merely a function of market performance but was driven by a dramatic turnover in strategy: the manager sold 17 positions and initiated 9 new ones, r...

The portfolio is currently concentrated, holding 26 total positions, with the top 10 holdings accounting for a substantial majority of the assets. The shift away from broad market ETFs and blue-chip conglomerates toward a high-conviction mix of thematic growth, special situations, and select cyclicals suggests a move toward higher alpha generation and higher risk tolerance. The "Unknown" sector allocation ($63.77M), which includes CyberArk and Core Scientific, indicates a significant portion of the portfolio is deployed in companies that may fall outside traditional GICS classifications or are recently listed/restructured entities, underscoring a focus on idiosyncratic opportunities.

Key Holdings

The portfolio is dominated by a few high-conviction names, with the top three positions constituting over 50% of the total assets.

Analysis generated by 13F Insight from SEC Form 13F filing data · Q2 2026. Methodology

Quarter at a glance — Q2 2026

Position-change comparison pending.

No quarter-over-quarter changes available.

Top 10 holdings

By portfolio weight as of Q2 2026.

#HoldingValueSharesWeight
01
ACWI
ISHARES TR
$60M385K9.8%
02
GTLS
CHART INDS INC
$60M285K9.7%
03
KVUE
KENVUE INC
$57M3.0M9.3%
04
NSC
NORFOLK SOUTHN CORP
$57M180K9.2%
05
WBD
WARNER BROS DISCOVERY INC
$55M2.0M8.9%
06
PEN
PENUMBRA INC
$54M171K8.8%
07
UNF
UNIFIRST CORP MASS
$45M171K7.3%
08
ROKU
ROKU INC
$40M290K6.5%
09
QRVO
QORVO INC
$23M250K3.8%
10
SATS
ECHOSTAR CORP
$22M217K3.6%

Filing history

2026Q2Jun 30
$616M 39.8%
60 positionsView →
2026Q1Mar 31
$441M 0.2%
51 positionsView →
2025Q4Dec 31
$441M 120.5%
49 positionsView →
2025Q3Sep 30
$200M 40.9%
26 positionsView →
2025Q2Jun 30
$338M 38.7%
36 positionsLocked
2025Q1Mar 31
$552M 168.1%
41 positionsLocked
2024Q4Dec 31
$206M
37 positionsLocked