Mizuho Securities Co.
Mizuho Securities Co. reported 19 stocks worth $4M in its 13F filing for Q3 2026, filed Nov 3, 2026. Its largest holdings are BILI (28.0%), ASX (11.5%) and ARM (10.6%). Compared with Q1 2026, the fund opened new positions in ASX, ARM and ISRG, added to AMZN and META and sold out of TCOM, NVDA and IAU.
Portfolio at a glance
share of reported value · Q3 2026What Mizuho Securities Co. did in Q3 2026
vs Q1 2026
Holdings
| # | Stock | Value | Weight | Shares | Change | Shares, 8 qtrs | Held |
|---|---|---|---|---|---|---|---|
| 1 |  BILI Bilibili Inc | $1.1M | 28.0% | 74K | No change | 5 of 8 | |
| 2 |  ASX Ase Technology Hldg Co Ltd | $456K | 11.5% | 10K | New position | 3 of 8 | |
| 3 |  ARM Arm Hldgs PLC Equity A F | $423K | 10.6% | 1,460 | New position | 6 of 8 | |
| 4 |  ISRG Intuitive Surgical Inc | $325K | 8.2% | 800 | New position | 5 of 8 | |
| 5 |  BABA Alibaba Group Hldg Ltd F | $296K | 7.4% | 2,750 | No change | 7 of 8 | |
| 6 |  JD Jd.com Inc | $242K | 6.1% | 9,100 | No change | 5 of 8 | |
| 7 |  CHT Chunghwa Telecom Co Ltd | $210K | 5.3% | 4,615 | New position | 3 of 8 | |
| 8 |  SPCX Space Exploration Techn Corp Class A Com Stk | $127K | 3.2% | 840 | New position | 1 of 8 | |
| 9 |  AMZN Amazon Com Inc | $120K | 3.0% | 480 | +370 (+336%) | 7 of 8 | |
| 10 |  DIS Disney Walt Co | $115K | 2.9% | 1,100 | New position | 5 of 8 |
Positions at Sep 30, 2026, as reported. Change is against the fund's Q1 2026 filing; weight is the share of the fund's reported stocks.
Sold out
held in Q1 2026, gone in Q3 2026| Stock | Value last quarter | Shares sold |
|---|---|---|
 TCOM Trip Com Group Ltd | $4.9M | 99K |
 NVDA Nvidia Corporation | $155K | 890 |
 IAU Ishares Gold TR | $73K | 830 |
 MA Mastercard Incorporated | $40K | 80 |
 MSFT Microsoft Corp | $33K | 90 |
🔒 Free account: see all 10.
Reported value
last 8 quartersThe value of the US stocks the fund reported, at quarter end prices. It moves with the market as well as with buying and selling.
Filings for Q3 2026
straight from the SEC| Filed | Form | Quarter | |
|---|---|---|---|
| Nov 3, 2026 | 13F-HR | Q3 2026 | SEC filing ↗ |
Other superinvestors
All hedge fund holdings →Mizuho Securities Co. 13F FAQ
What does Mizuho Securities Co. own?
Mizuho Securities Co. reported 19 stocks worth $4M in its 13F filing for Q3 2026, filed Nov 3, 2026. The table above lists every position in the filing (the top 10 without an account).
What did Mizuho Securities Co. buy and sell in Q3 2026?
Compared with Q1 2026: 13 new positions, 2 added to, 0 trimmed and 10 sold out. New positions include ASX, ARM and ISRG. It sold all of TCOM, NVDA and IAU.
When will Mizuho Securities Co. file its next 13F?
Holdings as of Dec 31, 2026 are due by Feb 15, 2027. The filing appears on this page within minutes of reaching the SEC.
How much is Mizuho Securities Co.'s portfolio worth?
The Q3 2026 filing reports $4M in US stocks. That leaves out cash, bonds, short positions and most foreign holdings, so the fund's total assets are usually larger.
For informational and educational purposes only. Not investment advice, and not a recommendation to buy or sell any security. Holdings come from the fund's SEC Form 13F filings as reported and show positions at the end of the quarter, up to 45 days before the filing. The fund may have changed its positions since. A 13F leaves out short positions, cash, bonds and most foreign holdings. See all hedge fund holdings.