13F Insight
DOSSIER · 13F-HR · Q2 2026

MANGROVE PARTNERS IM, LLC

$1.5B in tracked AUM across 426 positions as of Q2 2026.

MP
CIK 0001535392 · last filed Jun 30, 2026
Total AUM
$1.5B
as of Q2 2026
Holdings
426
—
positions
Whale Score
56
56
tracked
Activity
—
no data
changes this Q
AI Analysis · Q2 2026
Comprehensive Analysis of Mangrove Partners IM, LLC SEC 13F Filing
Portfolio Overview

Mangrove Partners IM, LLC reported a significant portfolio contraction for the quarter ended September 30, 2025. The total portfolio value decreased by 12.6%, falling from $931.33 million to $813.93 million. This reduction in assets under management (AUM) is likely driven by a combination of market performance and substantial capital reallocation, evidenced by the high turnover in holdings. The fund c...

Key Holdings

The portfolio exhibits a high concentration of capital in its top positions, suggesting a high-conviction investment style. The top three holdings account for approximately 34% of the total portfolio value:

  1. ECD Automotive Design Inc (18.52%): This is the dominant position, valued at $150.76 million. Its status as a new position this quarter indicates a major strategic bet by the firm, likely representing a perceived deep-value or special situation opportunity.
  2. Indivior PLC (8.12%): Valued at $66.12 million, this is the second-largest holding. The firm significantly increased its stake by 20.7% (adding $32.62 million), signaling strong confidence in the healthcare company's outlook.
  3. Atmus Filtration Technologies (7.37%): A consumer cyclical holding valued at $59.99 million. The position was increased by 21% this quarter, reinforcing its importance in the portfolio.
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
45579U109
INDIVIOR PHARMACEUTICALS INC
$110M2.7M7.2%02
VISN
VISTANCE NETWORKS INC
$91M7.2M6.0%03
ATMU
ATMUS FILTRATION TECHNOLOGIE
$62M1.2M4.1%04
FLYW
FLYWIRE CORPORATION
$52M3.0M3.4%05
L6388F110
MILLICOM INTL CELLULAR S A
$51M556K3.3%06
REX
REX AMERICAN RES CORP
$46M1.0M3.0%07
KDP
KEURIG DR PEPPER INC
$45M1.4M2.9%08
MRP
MILLROSE PPTYS INC
$41M1.4M2.7%09
ACHC
ACADIA HEALTHCARE COMPANY IN
$41M1.4M2.7%10
PCG
PG&E CORP
$41M2.4M2.7%

Filing history

2026Q2Jun 30
$1.5B▲ 23.2%
426 positionsView →2026Q1Mar 31
$1.2B▲ 0.7%
427 positionsView →2025Q4Dec 31
$1.2B▲ 50.8%
371 positionsView →2025Q3Sep 30
$814M▼ 12.6%
116 positionsView →2025Q2Jun 30
$931M▲ 94.1%
154 positionsLocked2025Q1Mar 31
$480M▼ 47.0%
103 positionsLocked2024Q4Dec 31
$905M▼ 22.2%
154 positionsLocked2024Q3Sep 30
$1.2B▼ 10.8%
161 positionsLocked2024Q2Jun 30
$1.3B▼ 9.3%
142 positionsLocked2024Q1Mar 31
$1.4B▼ 2.8%
163 positionsLocked2023Q4Dec 31
$1.5B▲ 11.7%
176 positionsLocked2023Q3Sep 30
$1.3B▼ 8.1%
167 positionsLocked
Showing 12 of 52