MIZUHO MARKETS AMERICAS LLC

MIZUHO MARKETS AMERICAS LLC declares $1.9B in 64 of the 230 AI and semiconductor companies tracked on Silicon Floor, as of Jun 30, 2026 (Form 13F): 30.1% of its $6.4B 13F portfolio. Largest positions: Marvell (0.06% of the company) and Alphabet (0.00% of the company). Over time: $1.9B in 64 of these companies for Q2 2026, against $66.6M in 2 for Q4 2020 (13F values as filed). From Mar 31, 2026 to Jun 30, 2026, it bought $612.3M and sold $329.3M of these stocks, at the quarter's prices: a net purchase of $282.9M; 11 new positions and 5 sold out.

Performance of its AI picks

The AI-stock portfolio MIZUHO MARKETS AMERICAS LLC declared for Q2 2026 (Form 13F), held unchanged, returned -8.2% in Q3 2026 (SMH -7.1%), ranked 1615 of 1,783 active managers. Over the last 12 months, quarter after quarter: +22.1% (SMH +87.2%), ranked 1091 of 1,359 active managers. Over three years, quarter after quarter: +112.6% (SMH +325.8%), ranked 675 of 783 active managers. Trades made during a quarter are not visible in 13F filings: this measures its declared picks, not the return of its funds.

Largest positions

1. Marvell (MRVL) — $156.9M: 526,767 shares, 0.06% of the company, 2.5% of its portfolio (added this quarter); held since Q1 2026
2. Alphabet (GOOGL) — $154.4M: 433,868 shares, 0.00% of the company, 2.4% of its portfolio (added this quarter); held since Q4 2024
3. KLA (KLAC) — $148.4M: 491,709 shares, 0.04% of the company, 2.3% of its portfolio (added this quarter); held since Q4 2025
4. Riot Platforms (RIOT) — $140.8M: 5.1M shares, 1.4% of the company, 2.2% of its portfolio (added this quarter); held since Q4 2024
5. Dominion Energy (D) — $85.3M: 1.2M shares, 0.14% of the company, 1.3% of its portfolio (new position this quarter)
6. Micron (MU) — $84.2M: 72,973 shares, 0.01% of the company, 1.3% of its portfolio (added this quarter); held since Q4 2025
7. Entergy (ETR) — $74.0M: 644,100 shares, 0.14% of the company, 1.2% of its portfolio (trimmed this quarter); held since Q1 2026
8. Xcel Energy (XEL) — $71.1M: 885,200 shares, 0.14% of the company, 1.1% of its portfolio (added this quarter); held since Q1 2026
9. Snowflake (SNOW) — $59.7M: 234,404 shares, 0.07% of the company, 0.94% of its portfolio (added this quarter); held since Q4 2024
10. Microsoft (MSFT) — $55.2M: 148,023 shares, 0.00% of the company, 0.87% of its portfolio (trimmed this quarter); held since Q4 2024
11. Cisco (CSCO) — $52.3M: 445,000 shares, 0.01% of the company, 0.82% of its portfolio (added this quarter); held since Q1 2026
12. IREN (IREN) — $51.5M: 1.1M shares, 0.32% of the company, 0.81% of its portfolio (added this quarter); held since Q4 2024
13. Amazon (AMZN) — $49.1M: 205,800 shares, 0.00% of the company, 0.77% of its portfolio (added this quarter); held since Q3 2025
14. NVIDIA (NVDA) — $48.9M: 244,555 shares, 0.00% of the company, 0.77% of its portfolio (trimmed this quarter); held since Q3 2025
15. Corning (GLW) — $48.5M: 190,000 shares, 0.02% of the company, 0.76% of its portfolio (added this quarter); held since Q3 2025

By sector

• Power, electrical & cooling — $398.6M, 21% of its AI holdings, 8 companies
• Chips & compute — $315.2M, 16% of its AI holdings, 13 companies
• Cloud & AI giants — $291.8M, 15% of its AI holdings, 5 companies
• Neoclouds & data centers — $237.4M, 12% of its AI holdings, 7 companies
• Equipment & test — $218.5M, 11% of its AI holdings, 8 companies
• AI software — $169.0M, 9% of its AI holdings, 13 companies
• Memory & storage — $150.3M, 8% of its AI holdings, 4 companies
• Interconnect — $65.7M, 3% of its AI holdings, 3 companies
• Optics — $48.5M, 3% of its AI holdings, 1 company
• Servers & systems — $21.0M, 1% of its AI holdings, 2 companies

Biggest changes this quarter

• added to Marvell (MRVL): +$155.6M at the quarter's price
• trimmed Entergy (ETR): -$86.2M at the quarter's price
• opened a position in Dominion Energy (D): +$85.3M at the quarter's price
• trimmed Microsoft (MSFT): -$49.6M at the quarter's price
• opened a position in Sandisk (SNDK): +$47.7M at the quarter's price
• trimmed Analog Devices (ADI): -$46.6M at the quarter's price
• added to Alphabet (GOOGL): +$44.3M at the quarter's price
• added to Snowflake (SNOW): +$38.3M at the quarter's price
• added to Monolithic Power (MPWR): +$36.0M at the quarter's price
• added to KLA (KLAC): +$36.0M at the quarter's price

Other holders of this size

• Vanguard — $3.6T in 225 of these companies
• BlackRock — $3.1T in 226 of these companies
• State Street — $1.6T in 222 of these companies
• Fidelity (FMR) — $1.2T in 223 of these companies
• Geode Capital — $890.9B in 220 of these companies
• Capital Group — $881.7B in 132 of these companies
• JPMorgan — $717.8B in 225 of these companies
• Invesco — $683.3B in 220 of these companies

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