§ 13F · FUND PROFILE
Asset Management One Co., Ltd..
Japanese institutional asset management
AUM · $31895.9T (13F)Positions · 944Turnover · 95% · Q4Filed · Jan 27, 2026
CONCENTRATION
35%
Top 10 holdings
NEW BUYS
+49
+$217.0T deployed
EXITS
0
No exits
SECTOR SHIFT
TECHNOLOGY → SEMICONDUCTORS
-1pp · +1pp
3YR HIT RATE
—
Top-5 overlap
§ 01 · TOP HOLDINGS
The book · Q4 2025
FILED JAN 27, 2026
| # | Ticker | Name | Shares | $ value | % port | Δ Q4 |
|---|---|---|---|---|---|---|
| 1 | IVV | ISHARES TR | 3.24M | $2235.3T | 6.2% | ±0% |
| 2 | NVDA | NVIDIA CORPORATION | 11.10M | $2089.1T | 5.8% | +2% |
| 3 | AAPL | APPLE INC | 6.65M | $1819.3T | 5.1% | +1% |
| 4 | MSFT | MICROSOFT CORP | 3.41M | $1658.5T | 4.6% | +2% |
| 5 | AMZN | AMAZON COM INC | 4.55M | $1056.9T | 2.9% | +3% |
| 6 | GOOGL | ALPHABET INC | 2.78M | $872.9T | 2.4% | +2% |
| 7 | AVGO | BROADCOM INC | 2.19M | $765.3T | 2.1% | +4% |
| 8 | GOOG | ALPHABET INC | 2.30M | $723.8T | 2.0% | +2% |
| 9 | META | META PLATFORMS INC | 1.06M | $697.7T | 1.9% | +1% |
| 10 | TSLA | TESLA INC | 1.32M | $606.8T | 1.7% | −1% |
§ 02 · SECTOR ALLOCATION
Where the money is
Other40.7% (±0)
Technology15.0% (−1pp)
Semiconductors11.0% (+1pp)
Media7.9% (±0)
Real Estate6.5% (±0)
Retail6.2% (±0)
§ 03 · THE ASSET SIGNAL
AC read
Asset Management One Co., Ltd. is a Quality / Compounder fund managing $31895945.3 trillion in assets. The fund runs a broad portfolio of 944 positions, broad diversification across holdings, with the top 10 accounting for 35%. Trading activity is aggressive at 95% quarterly turnover, with 49 new positions and 0 exits last quarter. Top sector allocations: Other (41%), Technology (15%), Semiconductors (11%).
Read the full dossier →§ 04 · FILING HISTORY
Q-by-Q deltas
1 FILINGS
Q4 2025
Busy quarter
+49 buys · −0 exits · 846 changed
Q3 2025
Steady book
+0 buys · −0 exits · 0 changed
Q2 2025
Steady book
+0 buys · −0 exits · 0 changed
Q1 2025
Steady book
+0 buys · −0 exits · 0 changed