CIK: 0000812291
Total reported value
$4.2B
Reporting period: 2026-03-31 · Number of holdings: 689
MIZUHO SECURITIES USA LLC disclosed 689 holdings in its latest 13F filing for the period ending 2026-03-31, with total reported value of $4.2B and a quarterly turnover rate of 48.8%.
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Mizuho Securities USA LLC's disclosed holdings carry a Herfindahl concentration index of 0.013 — mathematically equivalent to about 77 equally-sized positions, well below its 689 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 2.82), with a handful of outsized bets alongside many smaller positions.
No strong tilt toward either adding to existing winners or initiating outsized new positions was observed in the latest reported quarter.
Trim SPY
-99.1% -$939.8M
Add NVDA
-17.0% -$57.0M
Trim MSFT
-17.0% -$100.1M
Add XOM
-17.7% $7.3M
Add NET 0 08-15-26
+52.6% $10.0M
Add AAPL
-17.5% -$74.8M
Showing top 200 holdings (of 689 total)
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | NVDA | Nvidia CORP | Stock-Tech | 6.04% | +0.86% | -16.97% | |
| 2 | AAPL | Apple INC | Stock-Tech | 5.31% | +0.35% | -17.51% | |
| 3 | MSFT | Microsoft CORP | Stock-Tech | 3.92% | -0.48% | -17.05% | |
| 4 | AMZN | Amazon.com INC | Stock-Consumer Disc | 2.90% | +0.17% | -16.63% | |
| 5 | GOOGL | Alphabet Inc-cl A | Stock-Comm Services | 2.39% | +0.15% | -16.92% | |
| 6 | AVGO | Broadcom INC | Stock-Tech | 2.09% | -0.20% | -16.64% | |
| 7 | GOOG | Alphabet Inc-cl C | Stock-Comm Services | 1.91% | +0.12% | -16.50% | |
| 8 | META | Meta Platforms Inc-class A | Stock-Comm Services | 1.78% | +0.08% | -16.62% | |
| 9 | TSLA | Tesla INC | Stock-Consumer Disc | 1.49% | +0.03% | -16.90% | |
| 10 | BRK-B | Berkshire Hathaway Inc-cl B | Stock-Other | 1.25% | +0.12% | -16.97% | |
| 11 | JPM | Jpmorgan Chase & Co | Stock-Financials | 1.13% | +0.10% | -17.77% | |
| 12 | LLY | Eli Lilly & Co | Stock-Healthcare | 1.04% | +0.01% | -17.15% | |
| 13 | XOM | Exxon Mobil CORP | Stock-Energy | 1.01% | +0.42% | -17.72% | |
| 14 | WEC 4.375 06-01-27 | Wec Energy Group INC | Stock-Utilities | 0.93% | — | +5.66% | |
| 15 | JNJ | Johnson & Johnson | Stock-Healthcare | 0.84% | — | -16.95% | |
| 16 | ANSCW | Agriculture & Natural Solutions Acquisition Corporation | Stock-Other | 0.78% | — | +1.51% | |
| 17 | WMT | Walmart INC | Stock-Consumer Staples | 0.78% | — | -17.00% | |
| 18 | V | Visa Inc-class A Shares | Stock-Financials | 0.72% | +0.04% | -17.29% | |
| 19 | NET 0 08-15-26 | Cloudflare INC | Stock-Tech | 0.70% | +0.37% | +52.56% | |
| 20 | COST | Costco Wholesale CORP | Stock-Consumer Staples | 0.63% | — | -16.84% | |
| 21 | MA | Mastercard INC - A | Stock-Financials | 0.58% | +0.04% | -17.54% | |
| 22 | NFLX | Netflix INC | Stock-Comm Services | 0.58% | +0.03% | -17.27% | |
| 23 | CVX | Chevron CORP | Stock-Energy | 0.55% | — | -17.77% | |
| 24 | ABBV | Abbvie INC | Stock-Healthcare | 0.55% | +0.07% | -16.97% | |
| 25 | MU | Micron Technology INC | Stock-Tech | 0.54% | — | -16.75% | |
| 26 | RIG 4.625 09-30-29 * | Transocean Interntnl LTD | Stock-Energy | 0.50% | +0.33% | +44.68% | |
| 27 | ✓ | Drugs Made In Amer Acqutn Co | Stock-Other | 0.49% | +0.25% | +39.52% | |
| 28 | PG | Procter & Gamble Co/the | Stock-Consumer Staples | 0.48% | — | -17.43% | |
| 29 | PLTR | Palantir Technologies Inc-a | Stock-Tech | 0.48% | +0.02% | -16.97% | |
| 30 | AMD | Advanced Micro Devices | Stock-Tech | 0.47% | — | -16.85% | |
| 31 | CAT | Caterpillar INC | Stock-Industrials | 0.47% | — | -17.45% | |
| 32 | HD | Home Depot INC | Stock-Consumer Disc | 0.47% | +0.04% | -16.96% | |
| 33 | BAC | Bank Of America CORP | Stock-Financials | 0.46% | +0.03% | -18.00% | |
| 34 | ✓ | Silverbox CORP Iv | Stock-Other | 0.45% | — | +9.19% | |
| 35 | ON 0 05-01-27 | On Semiconductor CORP | Stock-Tech | 0.44% | +0.24% | +40.31% | |
| 36 | CSCO | Cisco Systems INC | Stock-Tech | 0.44% | — | -16.76% | |
| 37 | MRK | Merck & Co. INC. | Stock-Healthcare | 0.43% | — | -16.97% | |
| 38 | GE | General Electric | Stock-Industrials | 0.42% | — | -17.45% | |
| 39 | ✓ | Mountain Lake Acquisition Co | Stock-Other | 0.42% | +0.26% | +78.63% | |
| 40 | KO | Coca-cola Co/the | Stock-Consumer Staples | 0.42% | — | -16.97% | |
| 41 | SNOW 0 10-01-27 | Snowflake INC | Stock-Tech | 0.39% | — | +7.55% | |
| 42 | AMAT | Applied Materials INC | Stock-Tech | 0.39% | — | -17.28% | |
| 43 | LRCX | Lam Research CORP | Stock-Tech | 0.38% | — | -17.45% | |
| 44 | LPAAU | Launch One Acquisition Corp. | Stock-Other | 0.37% | — | +3.77% | |
| 45 | RTX | Rtx CORP | Stock-Industrials | 0.37% | — | -16.88% | |
| 46 | PM | Philip Morris International | Stock-Consumer Staples | 0.37% | — | -16.97% | |
| 47 | ✓ | Stock-Other | 0.36% | +0.21% | +71.41% | ||
| 48 | GS | Goldman Sachs Group INC | Stock-Financials | 0.36% | — | -16.97% | |
| 49 | ✓ | Globa Terra Acquisition Cor | Stock-Other | 0.36% | — | +32.86% | |
| 50 | ORCL | Oracle CORP | Stock-Tech | 0.36% | -0.05% | -16.30% |
Performance for Q3 2026
+3.8%
Performance Last 4 Quarters
+17.3%
Based on 62% of reported portfolio value with available pricing
Mizuho Securities USA LLC's most significant position changes for 2026-03-31: Sold out: Alliant Energy CORP (LNT 3.875 03-15-26); Sold out: Evergy INC (EVRG 4.5 12-15-27); Sold out: Haymaker Acquisition CORP Iv; Sold out: Ventas Realty LP (VTR 3.75 06-01-26); Sold out: AA Mission Acquisition Corp. II (YCY-UN).
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | NVDA | Nvidia CORP | +0.9% | -16.97% | Trim |
| 2 | XOM | Exxon Mobil CORP | +0.4% | -17.72% | Trim |
| 3 | NET 0 08-15-26 | Cloudflare INC | +0.4% | +52.56% | Add |
| 4 | AAPL | Apple INC | +0.4% | -17.51% | Trim |
| 5 | RIG 4.625 09-30-29 * | Transocean Interntnl LTD | +0.3% | +44.68% | Add |
| 6 | WK 1.125 08-15-26 | Workiva INC | +0.3% | +470.94% | Add |
| 7 | ✓ | Mountain Lake Acquisition Co | +0.3% | +78.63% | Add |
| 8 | ✓ | Drugs Made In Amer Acqutn Co | +0.3% | +39.52% | Add |
| 9 | ON 0 05-01-27 | On Semiconductor CORP | +0.2% | +40.31% | Add |
| 10 | ✓ | Legato Merger CORP Iii | +0.2% | +348.17% | Add |
| 11 | ✓ | Roman Dbdr Acquisition CORP | +0.2% | +540.18% | Add |
| 12 | ✓ | Yorkville Acquisition CORP. S | +0.2% | +139.95% | Add |
| 13 | ✓ | +0.2% | +71.41% | Add | |
| 14 | AMZN | Amazon.com INC | +0.2% | -16.63% | Trim |
| 15 | ✓ | Jackson Acquisition Co Ii | +0.2% | +749.88% | Add |
| 16 | ✓ | +0.2% | +179.64% | Add | |
| 17 | GOOGL | Alphabet Inc-cl A | +0.2% | -16.92% | Trim |
| 18 | GOOG | Alphabet Inc-cl C | +0.1% | -16.50% | Trim |
| 19 | BRK-B | Berkshire Hathaway Inc-cl B | +0.1% | -16.97% | Trim |
| 20 | JPM | Jpmorgan Chase & Co | +0.1% | -17.77% | Trim |
| 21 | META | Meta Platforms Inc-class A | +0.1% | -16.62% | Trim |
| 22 | ABBV | Abbvie INC | +0.1% | -16.97% | Trim |
| 23 | V | Visa Inc-class A Shares | 0% | -17.29% | Trim |
| 24 | MA | Mastercard INC - A | 0% | -17.54% | Trim |
| 25 | HD | Home Depot INC | 0% | -16.96% | Trim |
| 26 | TSLA | Tesla INC | 0% | -16.90% | Trim |
| 27 | NFLX | Netflix INC | 0% | -17.27% | Trim |
| 28 | BAC | Bank Of America CORP | 0% | -18.00% | Trim |
| 29 | PLTR | Palantir Technologies Inc-a | 0% | -16.97% | Trim |
| 30 | LLY | Eli Lilly & Co | 0% | -17.15% | Trim |
| 31 | UNH | Unitedhealth Group INC | 0% | -16.97% | Trim |
| 32 | IBM | Intl Business Machines CORP | 0% | -16.97% | Trim |
| 33 | ORCL | Oracle CORP | -0.1% | -16.30% | Trim |
| 34 | ✓ | Keen Vision Acquisition CORP | -0.1% | -64.31% | Trim |
| 35 | SIMA | SIM Acquisition Corp. I | -0.1% | -87.20% | Trim |
| 36 | AVGO | Broadcom INC | -0.2% | -16.64% | Trim |
| 37 | MSFT | Microsoft CORP | -0.5% | -17.05% | Trim |
| 38 | SPY | Ss Spdr S&p 500 ETF Trust-us | -15.5% | -99.15% | Trim |
| 39 | LNT 3.875 03-15-26 | Alliant Energy CORP | — | EXIT | Sold out |
| 40 | EVRG 4.5 12-15-27 | Evergy INC | — | EXIT | Sold out |
| 41 | ✓ | Haymaker Acquisition CORP Iv | — | EXIT | Sold out |
| 42 | VTR 3.75 06-01-26 | Ventas Realty LP | — | EXIT | Sold out |
| 43 | YCY-UN | AA Mission Acquisition Corp. II | — | EXIT | Sold out |
| 44 | VOYG | Voyager Technologies, Inc. | — | EXIT | Sold out |
| 45 | JBTM 0.25 05-15-26 | Jbt Marel CORP | — | EXIT | Sold out |
| 46 | EVAC-WT | EQV Ventures Acquisition Corp. II WT | — | EXIT | Sold out |
| 47 | ✓ | — | EXIT | Sold out | |
| 48 | SPOT 0 03-15-26 | Spotify USA INC | — | EXIT | Sold out |
| 49 | F 0 03-15-26 | Ford Motor Company | — | EXIT | Sold out |
| 50 | ✓ | Horizon Space Acquisition Ii | — | EXIT | Sold out |
| Period | Filed | Type | EDGAR |
|---|---|---|---|
| 2026-03-31 | 2026-05-11 | 13F-HR | View on EDGAR |
| 2025-12-31 | 2026-02-09 | 13F-HR | View on EDGAR |
| 2025-09-30 | 2025-10-22 | 13F-HR | View on EDGAR |
| 2025-06-30 | 2025-08-01 | 13F-HR | View on EDGAR |
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