Japan Science & Technology Agency
Long book
$4.81B
Q1 2026
Positions
12
Top-10 weight
95%
concentration
Last quarter
+6.8%
SPY +14.8%
Turnover
0%
of book per quarter
Strategy in plain words
auto-generated from filingsJapan Science & Technology Agency is a wealth-management firm allocating client money, running a $4.81B US long book across 12 positions.
The portfolio is extremely concentrated — the top 10 positions are almost the whole book. The book barely moves quarter to quarter — a patient, low-turnover holder. Current anchor positions: ISHR IBX USD INVGD CB ETF-UI, ISHR IBX USD HIYLD CB ETF-UI, ISHARES CORE S&P 500 ETF, INVESCO S&P 500 EQUAL WEIGHT, ISHARES BROAD USD HIGH YIELD.
Over the last 9 quarters its long book ran on average 2.2pp per quarter behind the S&P 500, beating the index in 2 of 9 quarters. Its holdings are mechanical (indexing / client flows), so position changes carry no stock-picking signal.
Implied long-book return vs S&P 500
methodology: positions priced quarterly, no shorts/options Fund long book S&P 500
Q1 2024
+0.5%
Q2 2024
+5.4%
Q3 2024
-1.6%
Q4 2024
+2.0%
Q1 2025
+3.7%
Q2 2025
+3.4%
Q3 2025
+1.4%
Q4 2025
-1.2%
Q1 2026
+6.8%
Sector allocation
No sector data
Long book by quarter
What does Japan Science own?
Q1 2026 13F| Company | Sector | Shares | Value | % of book | Change |
|---|
13F filing history
| Period | Form | Filed | Entries | Reported value | Flags | Source |
|---|---|---|---|---|---|---|
| Q1 2026 | 13F-HR | May 8, 2026 | 12 | $4.81B | canonical | SEC ↗ |
| Q4 2025 | 13F-HR | Feb 6, 2026 | 12 | $5.44B | canonical | SEC ↗ |
| Q3 2025 | 13F-HR | Oct 28, 2025 | 13 | $5.62B | canonical | SEC ↗ |
| Q2 2025 | 13F-HR | Jul 31, 2025 | 13 | $6.30B | canonical | SEC ↗ |
| Q1 2025 | 13F-HR | May 20, 2025 | 13 | $6.50B | canonical | SEC ↗ |
| Q4 2024 | 13F-HR | Jan 28, 2025 | 11 | $5.84B | canonical | SEC ↗ |
| Q3 2024 | 13F-HR | Nov 13, 2024 | 13 | $7.56B | canonical | SEC ↗ |
| Q2 2024 | 13F-HR | Aug 1, 2024 | 12 | $7.20B | canonical | SEC ↗ |
| Q1 2024 | 13F-HR | May 15, 2024 | 12 | $8.05B | canonical | SEC ↗ |