13F Insight
DOSSIER · 13F-HR · Q1 2026

Asset Management One Co., Ltd.

$33.9B in tracked AUM across 911 positions as of Q1 2026.

AM
CIK 0001068855 · last filed Mar 31, 2026
Total AUM
$33.9B
as of Q1 2026
Holdings
911
—
positions
Whale Score
63
63
tracked
Activity
—
no data
changes this Q
AI Analysis · Q1 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.

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
IVV
ISHARES TR
$2.1B3.2M6.2%02
NVDA
NVIDIA CORPORATION
$1.9B11.1M5.7%03
AAPL
APPLE INC
$1.7B6.6M4.9%04
MSFT
MICROSOFT CORP
$1.2B3.4M3.7%05
AMZN
AMAZON COM INC
$957M4.6M2.8%06
GOOGL
ALPHABET INC
$796M2.8M2.3%07
AVGO
BROADCOM INC
$671M2.2M2.0%08
GOOG
ALPHABET INC
$649M2.3M1.9%09
META
META PLATFORMS INC
$613M1.1M1.8%10
VGK
VANGUARD INTL EQUITY INDEX F
$521M6.3M1.5%

Filing history

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 positionsLocked2023Q2Jun 30
$23.6B▲ 7.1%
999 positionsLocked
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