CIK: 0001520309
Total reported value
$7.7M
Reporting period: 2026-03-31 · Number of holdings: 16
Mizuho Securities Co. Ltd. disclosed 16 holdings in its latest 13F filing for the period ending 2026-03-31, with total reported value of $7.7M and a quarterly turnover rate of 10.8%.
Browse other institutions with under $100M AUMBrowse other institutions starting with "M"
Mizuho Securities Co. Ltd.'s disclosed holdings carry a Herfindahl concentration index of 0.461 — mathematically equivalent to about 2 equally-sized positions, well below its 16 actual disclosed holdings. That gap points to a strategy built around a small core of high-conviction bets rather than broad diversification.
Position sizes vary widely across the portfolio (a coefficient of variation of 2.61), with a handful of outsized bets alongside many smaller positions.
Recent activity leans toward adding more aggressively to already-large existing positions than to newly initiated ones (a 21.1 percentage-point tilt) — a pattern consistent with a momentum-following approach.
Trim BILI
0.0% -$150.6K
Add NVDA
+8800.0% $153.4K
Trim BABA
0.0% -$58.1K
Add MSFT
+500.0% $26.1K
Trim GOOGL
-48.7% -$12.9K
Trim TCOM
+47.9% $117.0K
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | TCOM | Trip.com Group Ltd-adr | Stock-Consumer Disc | 64.02% | -0.11% | +47.95% | |
| 2 | BILI | Bilibili Inc-sponsored Adr | Stock-Other | 21.80% | -2.58% | — | |
| 3 | BABA | Alibaba Group Holding-sp Adr | Stock-Consumer Disc | 4.49% | -0.90% | — | |
| 4 | JD | Jd.com Inc-adr | Stock-Consumer Disc | 3.50% | +0.01% | — | |
| 5 | NVDA | Nvidia CORP | Stock-Tech | 2.02% | +2.00% | +8800.00% | |
| 6 | IAU | Ishares Gold Trust | ETF-Commodities | 0.95% | +0.95% | NEW | |
| 7 | LI | Li Auto INC - Adr | Stock-Other | 0.92% | +0.03% | — | |
| 8 | MA | Mastercard INC - A | Stock-Financials | 0.52% | +0.52% | NEW | |
| 9 | MSFT | Microsoft CORP | Stock-Tech | 0.43% | +0.33% | +500.00% | |
| 10 | AMZN | Amazon.com INC | Stock-Consumer Disc | 0.30% | +0.30% | NEW | |
| 11 | T | At&t INC | Stock-Comm Services | 0.29% | +0.29% | NEW | |
| 12 | ALB | Albemarle CORP | Stock-Materials | 0.23% | +0.23% | NEW | |
| 13 | META | Meta Platforms Inc-class A | Stock-Comm Services | 0.19% | +0.19% | NEW | |
| 14 | GOOGL | Alphabet Inc-cl A | Stock-Comm Services | 0.15% | -0.18% | -48.72% | |
| 15 | UMC | United Microelectron-sp Adr | Stock-Other | 0.09% | +0.01% | — | |
| 16 | TSLA | Tesla INC | Stock-Consumer Disc | 0.09% | +0.09% | NEW |
Performance for Q3 2026
-19.8%
Performance Last 4 Quarters
-21.9%
| Period | Holdings | Total value | Stability | Top holdings |
|---|---|---|---|---|
| 2026-03-31 | 16 | $7.7M | 11 | |
| 2025-12-31 | 14 | $7.5M | 66 | |
| 2025-09-30 | 43 | $14.6M | 83 | |
| 2025-06-30 | 49 | $27.7M | 0 | |
| 2025-03-31 | 50 | $8.4M | 100 | |
| 2024-12-31 | 45 | $6.6M | 0 | |
| 2024-09-30 | 78 | $40.6M | 0 | |
| 2024-06-30 | 82 | $43.0M | 0 | |
| 2024-03-31 | 58 | $18.2M | 0 | |
| 2023-12-31 | 74 | $27.9M | 0 | |
| 2023-09-30 | 66 | $21.4M | 0 | |
| 2023-06-30 | 78 | $44.4M | 0 | |
| 2023-03-31 | 72 | $32.1M | 0 | |
| 2022-12-31 | 87 | $36.0M | 0 | |
| 2022-09-30 | 207 | $295.2M | 0 | |
| 2022-06-30 | 203 | $519.6M | 0 | |
| 2022-03-31 | 203 | $459.9M | 0 | |
| 2021-12-31 | 201 | $277.9M | 0 | |
| 2021-09-30 | 194 | $344.2M | 0 | |
| 2021-06-30 | 206 | $523.3M | 100 | |
| 2021-03-31 | 192 | $482.9M | 9 | |
| 2020-12-31 | 171 | $509.6M | 19 | |
| 2020-09-30 | 80 | $555.4M | 49 | |
| 2020-06-30 | 75 | $355.5M | 100 | |
| 2020-03-31 | 43 | $55.8M | 100 | |
| 2019-12-31 | 143 | $188.4M | 69 | |
| 2019-09-30 | 132 | $149.4M | 97 | |
| 2019-06-30 | 149 | $77.0M | 90 | |
| 2019-03-31 | 117 | $46.0M | 100 | |
| 2018-12-31 | 115 | $1.1B | — |
Mizuho Securities Co. Ltd.'s most significant position changes for 2026-03-31: New buy: Ishares Gold Trust (IAU); Sold out: Caterpillar INC (CAT); New buy: Mastercard INC - A (MA); New buy: Amazon.com INC (AMZN); New buy: At&t INC (T).
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | NVDA | Nvidia CORP | +2% | +8800.00% | Add |
| 2 | MSFT | Microsoft CORP | +0.3% | +500.00% | Add |
| 3 | LI | Li Auto INC - Adr | 0% | — | Unchanged |
| 4 | JD | Jd.com Inc-adr | 0% | — | Unchanged |
| 5 | UMC | United Microelectron-sp Adr | 0% | — | Unchanged |
| 6 | TCOM | Trip.com Group Ltd-adr | -0.1% | +47.95% | Add |
| 7 | GOOGL | Alphabet Inc-cl A | -0.2% | -48.72% | Trim |
| 8 | BABA | Alibaba Group Holding-sp Adr | -0.9% | — | Unchanged |
| 9 | BILI | Bilibili Inc-sponsored Adr | -2.6% | — | Unchanged |
| 10 | IAU | Ishares Gold Trust | — | NEW | New buy |
| 11 | CAT | Caterpillar INC | — | EXIT | Sold out |
| 12 | MA | Mastercard INC - A | — | NEW | New buy |
| 13 | AMZN | Amazon.com INC | — | NEW | New buy |
| 14 | T | At&t INC | — | NEW | New buy |
| 15 | ALB | Albemarle CORP | — | NEW | New buy |
| 16 | PYPL | Paypal Holdings INC | — | EXIT | Sold out |
| 17 | META | Meta Platforms Inc-class A | — | NEW | New buy |
| 18 | ISRG | Intuitive Surgical INC | — | EXIT | Sold out |
| 19 | ORCL | Oracle CORP | — | EXIT | Sold out |
| 20 | TSLA | Tesla INC | — | NEW | New buy |
| 21 | PFE | Pfizer INC | — | EXIT | Sold out |
| Period | Filed | Type | EDGAR |
|---|---|---|---|
| 2026-03-31 | 2026-05-07 | 13F-HR | View on EDGAR |
| 2025-12-31 | 2026-01-30 | 13F-HR | View on EDGAR |
| 2025-09-30 | 2025-10-30 | 13F-HR | View on EDGAR |
| 2025-06-30 | 2025-08-12 | 13F-HR | View on EDGAR |
| 2025-03-31 | 2025-04-22 | 13F-HR | View on EDGAR |
| 2024-12-31 | 2025-02-12 | 13F-HR | View on EDGAR |
| 2024-09-30 | 2024-11-06 | 13F-HR | View on EDGAR |
| 2024-06-30 | 2024-08-01 | 13F-HR | View on EDGAR |
| 2024-03-31 | 2024-05-02 | 13F-HR | View on EDGAR |
| 2023-12-31 | 2024-02-02 | 13F-HR | View on EDGAR |
| 2023-09-30 | 2023-11-01 | 13F-HR | View on EDGAR |
| 2023-06-30 | 2023-08-01 | 13F-HR | View on EDGAR |
| 2023-03-31 | 2023-04-25 | 13F-HR | View on EDGAR |
| 2022-12-31 | 2023-02-07 | 13F-HR | View on EDGAR |
| 2022-09-30 | 2022-11-02 | Amendment | View on EDGAR |
| 2022-09-30 | 2022-10-28 | 13F-HR | View on EDGAR |
| 2022-06-30 | 2022-07-21 | 13F-HR | View on EDGAR |
| 2022-03-31 | 2022-04-15 | 13F-HR | View on EDGAR |
| 2021-12-31 | 2022-02-04 | 13F-HR | View on EDGAR |
| 2021-09-30 | 2021-11-05 | 13F-HR | View on EDGAR |
| 2021-06-30 | 2021-08-05 | 13F-HR | View on EDGAR |
| 2021-03-31 | 2021-05-14 | 13F-HR | View on EDGAR |
| 2020-12-31 | 2021-02-12 | 13F-HR | View on EDGAR |
| 2020-09-30 | 2020-11-04 | 13F-HR | View on EDGAR |
| 2020-06-30 | 2020-08-04 | 13F-HR | View on EDGAR |
| 2020-03-31 | 2020-04-21 | 13F-HR | View on EDGAR |
| 2019-12-31 | 2020-02-07 | 13F-HR | View on EDGAR |
| 2019-09-30 | 2019-11-14 | 13F-HR | View on EDGAR |
| 2019-06-30 | 2019-07-31 | 13F-HR | View on EDGAR |
| 2019-03-31 | 2019-05-08 | 13F-HR | View on EDGAR |
| 2018-12-31 | 2019-02-13 | 13F-HR | View on EDGAR |
Institutions with a similar AUM
CIK 0001914186
Total reported value
$7.7M
2 stks
2025-09-30
Stale — no recent filing
AUM within 0.3% of this institution
CIK 0001351699
Total reported value
$7.7M
2 stks
2015-09-30
Stale — no recent filing
AUM within 0.4% of this institution
CIK 0001399069
Total reported value
$7.6M
23 stks
2019-12-31
Stale — no recent filing
AUM within 1.1% of this institution
Institutions with overlapping top holdings
CIK 0001388294
Total reported value
$29.0M
46 stks
2022-12-31
Stale — no recent filing
3 of the top 5 holdings overlap, including Alibaba Group Holding-sp Adr
CIK 0001512384
Total reported value
$172.6M
7 stks
2021-12-31
Stale — no recent filing
3 of the top 5 holdings overlap, including Jd.com Inc-adr
CIK 0000898427
Total reported value
$256.4M
86 stks
2026-03-31
2 of the top 5 holdings overlap, including Alibaba Group Holding-sp Adr