Mubadala Investment Co PJSC

Mubadala Investment Co PJSC declares $33.4B in 11 of the 230 AI and semiconductor companies tracked on Silicon Floor, as of Jun 30, 2026 (Form 13F): 96.1% of its $34.8B 13F portfolio. Largest positions: GlobalFoundries (71.9% of the company) and Arm Holdings (0.08% of the company). Over time: $33.4B in 11 of these companies for Q2 2026, against $28.7B in 4 for Q4 2023 (13F values as filed). From Mar 31, 2026 to Jun 30, 2026, it bought $69.3M and sold $2.2B of these stocks, at the quarter's prices: a net sale of $2.1B; 4 new positions and 9 sold out.

Performance of its AI picks

The AI-stock portfolio Mubadala Investment Co PJSC declared for Q2 2026 (Form 13F), held unchanged, returned -41.3% in Q3 2026 (SMH -7.1%). Over the last 12 months, quarter after quarter: +35.3% (SMH +87.2%). 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. GlobalFoundries (GFS): $32.9B, 399.6M shares, 71.9% of the company, 94.7% of its portfolio (trimmed this quarter); held since Q4 2023
2. Arm Holdings (ARM): $319.8M, 901,960 shares, 0.08% of the company, 0.92% of its portfolio (trimmed this quarter); held since Q4 2023
3. Micron (MU): $52.5M, 45,451 shares, 0.00% of the company, 0.15% of its portfolio (added this quarter); held since Q4 2025
4. Sandisk (SNDK): $24.7M, 10,860 shares, 0.01% of the company, 0.07% of its portfolio (new position this quarter)
5. Lam Research (LRCX): $18.9M, 43,527 shares, 0.00% of the company, 0.05% of its portfolio (trimmed this quarter); held since Q1 2026
6. ASML (ASML): $17.0M, 8,535 shares, 0.00% of the company, 0.05% of its portfolio (added this quarter); held since Q1 2026
7. Amphenol (APH): $16.3M, 184,332 shares, 0.01% of the company, 0.05% of its portfolio (new position this quarter)
8. NVIDIA (NVDA): $13.1M, 65,326 shares, 0.00% of the company, 0.04% of its portfolio (new position this quarter)
9. Palantir (PLTR): $11.2M, 95,656 shares, 0.00% of the company, 0.03% of its portfolio (added this quarter); held since Q1 2026
10. Texas Instruments (TXN): $8.5M, 28,587 shares, 0.00% of the company, 0.02% of its portfolio (trimmed this quarter); held since Q1 2026
11. Analog Devices (ADI): $8.3M, 20,813 shares, 0.00% of the company, 0.02% of its portfolio (new position this quarter)

By sector

• Chips & compute: $33.3B, 100% of its AI holdings, 5 companies
• Memory & storage: $77.2M, 0% of its AI holdings, 2 companies
• Equipment & test: $35.8M, 0% of its AI holdings, 2 companies
• Interconnect: $16.3M, 0% of its AI holdings, 1 company
• AI software: $11.2M, 0% of its AI holdings, 1 company

Biggest changes this quarter

• trimmed GlobalFoundries (GFS): -$1.9B at the quarter's price
• trimmed Arm Holdings (ARM): -$168.4M at the quarter's price
• opened a position in Sandisk (SNDK): +$24.7M at the quarter's price
• opened a position in Amphenol (APH): +$16.3M at the quarter's price
• opened a position in NVIDIA (NVDA): +$13.1M at the quarter's price
• sold out of Broadcom (AVGO): -$12.2M at the quarter's price
• sold out of Western Digital (WDC): -$11.9M at the quarter's price
• sold out of Apple (AAPL): -$9.7M at the quarter's price
• opened a position in Analog Devices (ADI): +$8.3M at the quarter's price
• trimmed Texas Instruments (TXN): -$8.0M at the quarter's price

Schedule 13D/G declarations

• GlobalFoundries (GFS): 13G filed Aug 10, 2026: 399.6M shares as of Jun 30, 2026, 72.8% as declared
• GlobalFoundries (GFS): 13G filed Apr 27, 2026: 423.0M shares as of Mar 31, 2026, 77.0% as declared

Other holders of this size

• STIFEL FINANCIAL CORP: $32.9B in 201 of these companies
• SEI INVESTMENTS CO: $34.2B in 219 of these companies
• AVIVA PLC: $32.5B in 125 of these companies
• LOOMIS SAYLES & CO L P: $34.3B in 96 of these companies
• CIBC Bancorp USA Inc.: $32.4B in 164 of these companies
• ACADIAN ASSET MANAGEMENT LLC: $34.5B in 168 of these companies
• BESSEMER GROUP INC: $32.2B in 184 of these companies
• NATIXIS ADVISORS, LLC: $34.6B in 153 of these companies

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