MS
Mizuho Securities Co. Ltd. Holdings Report (Q1 2026) — 13F Stock Portfolio
Mizuho Securities Co. Ltd.CIK: 0001520309
Concentrated strategySector-focusedMomentum follower
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%.
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Personality snowflake
- Concentration
- 100
- Portfolio Stability
- 10.77
- Momentum
- 100
- Sector conviction
- 100
- Diversification
- 32
- Sizing Uniformity
- 73.91
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.
Source and citation information
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Recent moves
View source Form 13F filing on SEC.govTrim 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
Holdings Map
New buyAddUnchangedTrim
Top 10 holdings by weight
Full holdings list this quarter
| # | 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 |
Portfolio Performance
Performance for Q3 2026
-4.1%
Performance Last 4 Quarters
-18.4%
- Stdev
- +26.1%
- Beta
- +1.2
- Alpha
- -12.7%
- Max Drawdown
- -37.4%
- Annualized Perf
- +8.3%
- Batting Avg vs S&P
- +47.2%
- Sortino
- +0.68
- Stutzer
- +0.13
- Treynor
- +0.09
- Sterling
- +0.27
- Calmar
- +0.22
- Information Ratio
- -0.41
- Tracking Error
- +21.1%
- Stdev Down
- +16.5%
- Winning Months %
- +58.3%
- Losing Months %
- +41.7%
- Best 12 Months
- +50.7%
- Worst 12 Months
- -24.8%
- Efficiency Ratio
- +0.12
- Sharpe
- +0.43
- Stdev Sectors
- +37.5%
- Skewness
- -0.01
- Kurtosis
- -0.62
- Upside Potential
- +2.57
Reported value over time
Sector allocation
Sector allocation over time
Quarterly history
| Period | Holdings | Total value | Stability | Top holdings | |
|---|---|---|---|---|---|
| 2026 Q1 | 16 | $7.7M | 11 | ||
| 2025 Q4 | 14 | $7.5M | 66 | ||
| 2025 Q3 | 43 | $14.6M | 83 | ||
| 2025 Q2 | 49 | $27.7M | 0 | ||
| 2025 Q1 | 50 | $8.4M | 100 | ||
| 2024 Q4 | 45 | $6.6M | 0 | ||
| 2024 Q3 | 78 | $40.6M | 0 | ||
| 2024 Q2 | 82 | $43.0M | 0 | ||
| 2024 Q1 | 58 | $18.2M | 0 | ||
| 2023 Q4 | 74 | $27.9M | 0 | ||
| 2023 Q3 | 66 | $21.4M | 0 | ||
| 2023 Q2 | 78 | $44.4M | 0 | ||
| 2023 Q1 | 72 | $32.1M | 0 | ||
| 2022 Q4 | 87 | $36.0M | 0 | ||
| 2022 Q3 | 207 | $295.2M | 0 | ||
| 2022 Q2 | 203 | $519.6M | 0 | ||
| 2022 Q1 | 203 | $459.9M | 0 | ||
| 2021 Q4 | 201 | $277.9M | 0 | ||
| 2021 Q3 | 194 | $344.2M | 0 | ||
| 2021 Q2 | 206 | $523.3M | 100 | ||
| 2021 Q1 | 192 | $482.9M | 9 | ||
| 2020 Q4 | 171 | $509.6M | 19 | ||
| 2020 Q3 | 80 | $555.4M | 49 | ||
| 2020 Q2 | 75 | $355.5M | 100 | ||
| 2020 Q1 | 43 | $55.8M | 100 | ||
| 2019 Q4 | 143 | $188.4M | 69 | ||
| 2019 Q3 | 132 | $149.4M | 97 | ||
| 2019 Q2 | 149 | $77.0M | 90 | ||
| 2019 Q1 | 117 | $46.0M | 100 | ||
| 2018 Q4 | 115 | $1.1B | — |
* This report is exclusively curated by the AlphaSMO team. AlphaSMO is the web's most authoritative 13F / Inside Trader database, delivering precise insider trading and institutional holdings insights.
Holding changes this quarter
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 |
Filing History
FAQ
What is Mizuho Securities Co. Ltd. and what type of investor is it?
Mizuho Securities Co. Ltd. is an investment manager that files SEC Form 13F quarterly, disclosing its U.S. public equity holdings to regulators. As of the most recent reporting period (2026-03-31), the firm manages a tracked equity portfolio valued at approximately $7.7M, spread across 16 disclosed positions.
What are Mizuho Securities Co. Ltd.'s largest equity positions?
Based on the latest 13F filing, Mizuho Securities Co. Ltd.'s top holdings by market value are:
1. Trip.com Group Ltd-adr (TCOM) — $4.9M (64.0%)
2. Bilibili Inc-sponsored Adr (BILI) — $1.7M (21.8%)
3. Alibaba Group Holding-sp Adr (BABA) — $345.0K (4.5%)
4. Jd.com Inc-adr (JD) — $269.1K (3.5%)
5. Nvidia CORP (NVDA) — $155.2K (2.0%)
What changes did Mizuho Securities Co. Ltd. make in its most recent portfolio filing?
In the latest reported quarter, Mizuho Securities Co. Ltd. made 16 notable position adjustments: 7 new positions were initiated, 3 existing holdings were added to, 1 positions were partially reduced, and 5 were completely exited. The largest of these moves: 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)
What sectors does Mizuho Securities Co. Ltd. focus on?
Mizuho Securities Co. Ltd. is concentrated in the following sectors based on its current disclosed equity portfolio:
• Consumer Discretionary: 95.0%
• Information Technology: 3.2%
• Communication Services: 0.8%
• Financials: 0.7%
• Materials: 0.3%
Investment Profile
Mizuho Securities Co. Ltd. returned an annualized 8.3% over the trailing 36 months — underperforming the S&P 500 by 12.7 points — based on a reconstructed track record of its disclosed 13F positions, with a beta of 1.20 (more volatile than the market) and a 47% quarterly batting average against the index.
Its portfolio is concentrated and long-term-holding, with 95.0% of the portfolio concentrated in Consumer Discretionary.
Its turnover score has fallen from 100 to 11 over the past 4 quarters — a shift toward longer holding periods.
It has added to its TCOM position over the past two quarters (+$151.2K, now $4.9M), while trimming BILI over the same stretch (-$410.4K, still holding $1.7M).
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Developer Access
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REST API
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