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

BRIGHTLINE CAPITAL MANAGEMENT, LLC

$462M in tracked AUM across 11 positions as of Q2 2026.

BC
CIK 0001432450 · last filed Jun 30, 2026
Total AUM
$462M
as of Q2 2026
Holdings
11
—
positions
Whale Score
71
71
strong
Activity
—
no data
changes this Q
AI Analysis · Q2 2026
Comprehensive Analysis of Brightline Capital Management LLC 13F Filing
Portfolio Overview

Brightline Capital Management LLC manages a concentrated, high-conviction portfolio totaling approximately $152.96 million as of September 30, 2025. The firm employs a focused investment strategy, holding a mere six positions, which indicates a preference for high-conviction picks over broad diversification. The portfolio experienced significant growth during the quarter, increasing in value by 29.9% ...

The portfolio is heavily top-heavy, with the top two holdings—Viasat (VSAT) and Solaris Energy Infras (SEI)—accounting for nearly 65.2% of the total assets. This structure suggests that the firm’s performance is highly correlated with the success of these specific underlying businesses.

Key Holdings

The portfolio is dominated by three primary positions, with the remaining holdings serving as smaller satellite allocations.

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
VSAT
VIASAT INC
$190M2.1M41.1%02
F21107101
CONSTELLIUM SE
$61M1.9M13.3%03
RRX
REGAL REXNORD CORPORATION
$39M163K8.4%04
FLR
FLUOR CORP
$38M723K8.2%05
ECVT
ECOVYST INC
$37M3.0M8.1%06
DAN
DANA INC
$32M1.2M6.8%07
HRI
HERC HLDGS INC
$20M142K4.4%08
TGB
TREKOR METALS LTD
$15M2.2M3.3%09
OC
OWENS CORNING NEW
$13M80K2.8%10
WSC
WILLSCOT HLDGS CORP
$10M342K2.1%

Filing history

2026Q2Jun 30
$462M▲ 36.5%
11 positionsView →2026Q1Mar 31
$338M▲ 36.7%
9 positionsView →2025Q4Dec 31
$247M▲ 61.7%
8 positionsView →2025Q3Sep 30
$153M▲ 29.9%
6 positionsView →2025Q2Jun 30
$118M▲ 65.3%
10 positionsLocked2025Q1Mar 31
$71M▼ 51.1%
9 positionsLocked2024Q4Dec 31
$146M▼ 38.4%
13 positionsLocked2024Q3Sep 30
$237M▲ 17.5%
20 positionsLocked2024Q2Jun 30
$201M▲ 21.2%
19 positionsLocked2024Q1Mar 31
$166M▲ 80.3%
15 positionsLocked2023Q4Dec 31
$92M▲ 277.5%
10 positionsLocked2023Q3Sep 30
$24M▲ 179.9%
4 positionsLocked
Showing 12 of 36