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

Asset Management One Co., Ltd.

$39.0B in tracked AUM across 957 positions as of Q2 2026.

AM
CIK 0001068855 · last filed Jun 30, 2026
Total AUM
$39.0B
as of Q2 2026
Holdings
957
—
positions
Whale Score
65
65
tracked
Activity
—
no data
changes this Q
AI Analysis · Q2 2026
Portfolio Overview

Asset Management One Co., Ltd. (AM One) manages a substantial $15.40B portfolio (as of the report date September 30, 2025), reflecting a growth of 9.7% from the previous quarter's $14.04B. The portfolio is highly diversified, comprising 460 individual holdings. Despite the large number of positions, the firm employs a conviction-based strategy, as evidenced by the concentration in the top assets. The top 10 holdings account for approximately 38% of the total portfolio valu...

Key Holdings

The portfolio is heavily anchored in the "Magnificent Seven" and adjacent mega-cap technology leaders. NVIDIA (NVDA) is the dominant position, valued at $2.04B and representing 13.25% of the total portfolio. This massive allocation signals a strong bet on the artificial intelligence infrastructure and semiconductor cycle. Following NVDA, Meta Platforms (META) ($767.28M) and Broadcom (AVGO) ($692.36M) occupy the second and third spots, respectively, further emphasizing the firm's overweight stance on the communication services and semiconductor hardware sectors.

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
IVV
ISHARES TR
$2.4B3.3M6.3%02
NVDA
NVIDIA CORPORATION
$2.2B10.8M5.5%03
AAPL
APPLE INC
$1.9B6.7M5.0%04
MSFT
MICROSOFT CORP
$1.3B3.4M3.3%05
AMZN
AMAZON COM INC
$1.1B4.7M2.9%06
GOOGL
ALPHABET INC
$1.0B2.9M2.6%07
AVGO
BROADCOM INC
$811M2.1M2.1%08
GOOG
ALPHABET INC
$781M2.2M2.0%09
MU
MICRON TECHNOLOGY INC
$612M530K1.6%10
META
META PLATFORMS INC
$604M1.1M1.6%

Filing history

2026Q2Jun 30
$39.0B▲ 14.9%
957 positionsView →2026Q1Mar 31
$33.9B▼ 5.7%
911 positionsView →2025Q4Dec 31
$36.0B▲ 133.5%
939 positionsView →2025Q3Sep 30
$15.4B▲ 9.7%
460 positionsView →2025Q2Jun 30
$14.0B▲ 14.7%
463 positionsLocked2025Q1Mar 31
$12.2B▼ 57.9%
475 positionsLocked2024Q4Dec 31
$29.1B▲ 3.6%
952 positionsLocked2024Q3Sep 30
$28.1B▲ 7.5%
965 positionsLocked2024Q2Jun 30
$26.1B▲ 0.7%
962 positionsLocked2024Q1Mar 31
$25.9B▲ 4.4%
973 positionsLocked2023Q4Dec 31
$24.8B▲ 10.6%
976 positionsLocked2023Q3Sep 30
$22.5B▼ 4.9%
990 positionsLocked
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