DOSSIER · 13F-HR · Q1 2026

BEACONLIGHT CAPITAL, LLC

$190M in tracked AUM across 34 positions as of Q1 2026.

BC
CIK 0001569537 · last filed Mar 31, 2026
Total AUM
$190M
as of Q1 2026
Holdings
34
positions
Whale Score
62
62
tracked
Activity
no data
changes this Q
AI Analysis · Q1 2026
Comprehensive Analysis of BEACONLIGHT CAPITAL, LLC 13F Filing
1. Portfolio Overview

For the quarter ended September 30, 2025, Beaconlight Capital, LLC managed a total portfolio value of approximately $157.35 million across 21 holdings. This represents a decrease in portfolio value of 10.2% from the previous quarter's $175.22 million. The portfolio is characterized by a concentrated strategy, with the top ten positions accounting for roughly 77% of total assets. The manager demonstrates a h...

2. Key Holdings

The portfolio is heavily anchored by Resideo Technologies (REZI), which remains the largest holding at $27.85 million, representing 17.70% of the portfolio. Despite a 21.4% reduction in shares this quarter, Resideo remains a core "conviction" position. The second and third largest holdings, Constellium SE and Cheniere Energy (LNG), represent 12.04% and 8.98% of the portfolio, respectively. Notably, Constellium saw a significant capital injection of $6.60 million (+37.1%), indicating the manager's increased confidence in the industrial metals space.

The portfolio features a distinct barbell strategy in terms of position sizing. While the top three holdings dominate, the manager maintains meaningful exposure to mid-cap growth stories such as Sandisk (SNDK) and SomniGroup (SGI), both newly initiated at roughly 5.3% portfolio weight each. This suggests a strategy that balances large-cap stability (or value plays) with aggressive mid-cap growth positions.

Quarter at a glance — Q1 2026

Position-change comparison pending.

No quarter-over-quarter changes available.

Top 10 holdings

By portfolio weight as of Q1 2026.

#HoldingValueSharesWeight
01
F21107101
CONSTELLIUM SE
$29M1.2M15.2%
02
REZI
RESIDEO TECHNOLOGIES INC
$20M594K10.6%
03
STM
STMICROELECTRONICS N V
$13M384K7.0%
04
SPY
STATE STR SPDR S&P 500 ETF T
$12M19K6.6%
05
SXT
SENSIENT TECHNOLOGIES CORP
$11M124K5.7%
06
TECK
TECK RESOURCES LTD
$9M183K5.0%
07
LNG
CHENIERE ENERGY INC
$8M30K4.5%
08
U
UNITY SOFTWARE INC
$8M345K4.0%
09
GPOR
GULFPORT ENERGY CORP
$7M34K3.8%
10
NTRA
NATERA INC
$7M34K3.5%

Filing history

2026Q1Mar 31
$190M 10.9%
34 positionsView →
2025Q4Dec 31
$171M 8.8%
23 positionsView →
2025Q3Sep 30
$157M 10.2%
21 positionsView →
2025Q2Jun 30
$175M 17.4%
30 positionsLocked
2025Q1Mar 31
$149M 44.6%
24 positionsLocked
2024Q4Dec 31
$270M 9.8%
30 positionsLocked
2024Q3Sep 30
$246M 10.2%
28 positionsLocked
2024Q2Jun 30
$223M 11.1%
31 positionsLocked
2024Q1Mar 31
$251M 1.6%
34 positionsLocked
2023Q4Dec 31
$247M 6.6%
32 positionsLocked
2023Q3Sep 30
$231M 6.4%
31 positionsLocked
2023Q2Jun 30
$217M 14.9%
30 positionsLocked
Showing 12 of 51