DOSSIER · 13F-HR · Q2 2026

Horizon Investment Services, LLC

$360M in tracked AUM across 143 positions as of Q2 2026.

HI
CIK 0001426940 · last filed Jun 30, 2026
Total AUM
$360M
as of Q2 2026
Holdings
143
positions
Whale Score
50
50
tracked
Activity
no data
changes this Q
AI Analysis · Q2 2026
Comprehensive SEC 13F Analysis: Horizon Investment Services, LLC
1. Portfolio Overview

Horizon Investment Services, LLC manages a concentrated portfolio totaling approximately $141.97 million across 56 holdings as of September 30, 2025. The most striking feature of this filing is the significant reduction in portfolio value, which decreased by 37.8% from $228.25 million in the previous quarter. This substantial contraction suggests a major shift in strategy, likely driven by profit-taking...

The portfolio exhibits a mix of high-conviction single-stock picks and broad market exposure through ETFs. While the number of holdings (56) suggests moderate diversification, the allocation is heavily skewed toward the top positions, indicating a conviction-based approach rather than a passive indexing strategy. The management team appears highly active, evidenced by a turnover rate where 29 positions were sold and 29 new positions were initiated, representing a complete overhaul of roughly half the portfolio's constituents.

2. Key Holdings
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
LRCX
LAM RESEARCH CORP
$23M53K6.4%
02
NVDA
NVIDIA CORPORATION
$22M110K6.1%
03
MU
MICRON TECHNOLOGY INC
$17M15K4.7%
04
GOOGL
ALPHABET INC
$16M45K4.4%
05
VCSH
VANGUARD SCOTTSDALE FDS
$15M185K4.1%
06
AVGO
BROADCOM INC
$11M29K3.1%
07
FIX
COMFORT SYS USA INC
$10M5K2.7%
08
AAPL
APPLE INC
$8M29K2.3%
09
AMAT
APPLIED MATLS INC
$8M11K2.3%
10
KLAC
KLA CORP
$8M26K2.2%

Filing history

2026Q2Jun 30
$360M 25.0%
143 positionsView →
2026Q1Mar 31
$288M 3.5%
137 positionsView →
2025Q4Dec 31
$278M 95.7%
139 positionsView →
2025Q3Sep 30
$142M 37.8%
56 positionsView →
2025Q2Jun 30
$228M 10.9%
122 positionsLocked
2025Q1Mar 31
$206M 12.5%
110 positionsLocked
2024Q4Dec 31
$235M 0.5%
123 positionsLocked
2024Q3Sep 30
$234M 10.3%
122 positionsLocked
2024Q2Jun 30
$212M 3.8%
109 positionsLocked
2024Q1Mar 31
$204M 10.3%
114 positionsLocked
2023Q4Dec 31
$185M 11.4%
107 positionsLocked
2023Q3Sep 30
$166M 1.6%
102 positionsLocked
Showing 12 of 71