IMC-Chicago, LLC

IMC-Chicago, LLC declares $4.3B in 142 of the 230 AI and semiconductor companies tracked on Silicon Floor, as of Jun 30, 2026 (Form 13F): 1.0% of its $418.7B 13F portfolio. Largest positions: Micron (0.04% of the company) and TSMC (0.02% of the company). Over time: $4.3B in 142 of these companies for Q2 2026, against $108.3M in 8 for Q4 2019 (13F values as filed). From Mar 31, 2026 to Jun 30, 2026, it bought $2.3B and sold $1.2B of these stocks, at the quarter's prices: a net purchase of $1.2B; 55 new positions and 27 sold out.

Performance of its AI picks

The AI-stock portfolio IMC-Chicago, LLC declared for Q2 2026 (Form 13F), held unchanged, returned -0.4% in Q3 2026 (SMH -7.1%), ranked 1334 of 1,783 active managers. Over the last 12 months, quarter after quarter: +92.4% (SMH +87.2%), ranked 45 of 1,359 active managers. Over three years, quarter after quarter: +599.8% (SMH +325.8%). Over five years, quarter after quarter: +1014.7% (SMH +389.8%). 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. Micron (MU) — $570.0M: 493,782 shares, 0.04% of the company, 0.14% of its portfolio (trimmed this quarter); held since Q4 2023
2. TSMC (TSM) — $548.8M: 1.1M shares, 0.02% of the company, 0.13% of its portfolio (added this quarter); held since Q3 2025
3. Amazon (AMZN) — $387.3M: 1.6M shares, 0.02% of the company, 0.09% of its portfolio (added this quarter); held since Q1 2026
4. ASML (ASML) — $251.5M: 126,416 shares, 0.03% of the company, 0.06% of its portfolio (added this quarter); held since Q1 2026
5. Apple (AAPL) — $243.9M: 842,877 shares, 0.01% of the company, 0.06% of its portfolio (added this quarter); held since Q1 2026
6. Meta Platforms (META) — $227.6M: 404,082 shares, 0.02% of the company, 0.05% of its portfolio (added this quarter); held since Q2 2025
7. Intel (INTC) — $147.2M: 1.1M shares, 0.02% of the company, 0.04% of its portfolio (added this quarter); held since Q4 2024
8. Microsoft (MSFT) — $113.0M: 303,034 shares, 0.00% of the company, 0.03% of its portfolio (new position this quarter)
9. Marvell (MRVL) — $99.0M: 332,498 shares, 0.04% of the company, 0.02% of its portfolio (added this quarter); held since Q1 2025
10. Super Micro Computer (SMCI) — $97.4M: 3.3M shares, 0.51% of the company, 0.02% of its portfolio (added this quarter); held since Q4 2025
11. Sandisk (SNDK) — $78.6M: 34,584 shares, 0.02% of the company, 0.02% of its portfolio (trimmed this quarter); held since Q4 2025
12. Bloom Energy (BE) — $73.8M: 243,712 shares, 0.08% of the company, 0.02% of its portfolio (added this quarter); held since Q1 2026
13. Qualcomm (QCOM) — $69.1M: 373,821 shares, 0.04% of the company, 0.02% of its portfolio (added this quarter); held since Q1 2026
14. Oracle (ORCL) — $67.6M: 461,563 shares, 0.02% of the company, 0.02% of its portfolio (trimmed this quarter); held since Q1 2026
15. Western Digital (WDC) — $59.9M: 93,724 shares, 0.03% of the company, 0.01% of its portfolio (added this quarter); held since Q1 2026

By sector

• Chips & compute — $1.0B, 24% of its AI holdings, 27 companies
• Cloud & AI giants — $971.8M, 23% of its AI holdings, 4 companies
• Memory & storage — $743.9M, 17% of its AI holdings, 4 companies
• AI software — $429.9M, 10% of its AI holdings, 25 companies
• Equipment & test — $392.8M, 9% of its AI holdings, 17 companies
• Neoclouds & data centers — $215.5M, 5% of its AI holdings, 22 companies
• Power, electrical & cooling — $211.8M, 5% of its AI holdings, 25 companies
• Servers & systems — $183.2M, 4% of its AI holdings, 6 companies
• Optics — $101.3M, 2% of its AI holdings, 9 companies
• Interconnect — $28.9M, 1% of its AI holdings, 3 companies

Biggest changes this quarter

• added to Amazon (AMZN): +$323.9M at the quarter's price
• trimmed Micron (MU): -$274.1M at the quarter's price
• trimmed Sandisk (SNDK): -$253.0M at the quarter's price
• added to TSMC (TSM): +$252.5M at the quarter's price
• added to Apple (AAPL): +$241.4M at the quarter's price
• added to ASML (ASML): +$148.3M at the quarter's price
• opened a position in Microsoft (MSFT): +$113.0M at the quarter's price
• added to Meta Platforms (META): +$100.3M at the quarter's price
• sold out of Alphabet (GOOGL): -$99.3M at the quarter's price
• added to Marvell (MRVL): +$93.8M at the quarter's price

Other holders of this size

• Quadrature Capital Ltd — $4.2B in 104 of these companies
• W1M Asset Management Ltd — $4.3B in 28 of these companies
• MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC — $4.2B in 163 of these companies
• OREGON PUBLIC EMPLOYEES RETIREMENT FUND — $4.3B in 151 of these companies
• Davis Selected Advisers — $4.2B in 18 of these companies
• iA Global Asset Management Inc. — $4.3B in 77 of these companies
• Hood River Capital Management LLC — $4.2B in 25 of these companies
• Andra AP-fonden — $4.4B in 83 of these companies

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