DOSSIER · 13F-HR · Q2 2026

Platinum Equity Advisors, LLC/DE

$9.0B in tracked AUM across 6 positions as of Q2 2026.

PE
CIK 0001803274 · last filed Jun 30, 2026
Total AUM
$9.0B
as of Q2 2026
Holdings
6
positions
Whale Score
88
88
top tier
Activity
no data
changes this Q
AI Analysis · Q2 2026

Portfolio Overview

Platinum Equity Advisors, LLC presents an exceptionally concentrated portfolio as of the reporting period ended September 30, 2025. With a total portfolio value of approximately $1.01 billion, the firm exhibits a distinct "non-diversified" investment strategy, allocating 100% of its reported assets to a single security. The portfolio experienced significant growth during the quarter, increasing in value by 30.0% from approximately $774.31 million in the previous quarter. ...

Key Holdings

The portfolio is entirely composed of Custom Truck One Source Inc, which represents 100% of the total assets. Platinum Equity holds 156.74 million shares valued at $1.01 billion. This dominant position indicates that Platinum Equity likely acts as a strategic or controlling shareholder in the company. Given the sheer volume of shares held relative to the total portfolio value, this is not a passive minority investment but rather reflects deep control or significant influence over the company's operations and strategic direction. The lack of any other holdings suggests that the firm views Custom Truck One Source as a standalone opportunity capable of delivering the firm's targeted returns without the need for broader market hedging or diversification.

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
INGM
INGRAM MICRO HLDG CORP
$4.9B177.5M54.3%
02
CTOS
CUSTOM TRUCK ONE SOURCE INC
$1.9B156.7M20.7%
03
MH
MCGRAW HILL INC
$1.3B165.2M14.6%
04
CMPO
GPGI INC
$837M52.8M9.3%
05
RYI
RYERSON HLDG CORP
$97M3.9M1.1%
06
IMXI
INTERNATIONAL MNY EXPRESS IN
$463K32K0.0%

Filing history

2026Q2Jun 30
$9.0B 0.9%
6 positionsView →
2026Q1Mar 31
$8.9B 7.9%
6 positionsView →
2025Q4Dec 31
$8.2B 717.4%
5 positionsView →
2025Q3Sep 30
$1.0B 80.8%
2 positionsView →
2025Q2Jun 30
$5.3B 16.9%
3 positionsLocked
2025Q1Mar 31
$4.5B 7.9%
3 positionsLocked
2024Q4Dec 31
$4.9B 724.8%
3 positionsLocked
2024Q3Sep 30
$591M 18.3%
3 positionsLocked
2024Q2Jun 30
$724M 27.4%
3 positionsLocked
2024Q1Mar 31
$997M 30.6%
3 positionsLocked
2023Q4Dec 31
$1.4B 107848.5%
4 positionsLocked
2023Q3Sep 30
$1M 43.0%
3 positionsLocked
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