Holocene Advisors, LP

Holocene Advisors, LP declares $12.3B in 99 of the 230 AI and semiconductor companies tracked on Silicon Floor, as of Jun 30, 2026 (Form 13F): 27.7% of its $44.4B 13F portfolio. Largest positions: Amazon (0.13% of the company) and Microsoft (0.06% of the company). Over time: $12.3B in 99 of these companies for Q2 2026, against $1.3B in 48 for Q4 2019 (13F values as filed). From Mar 31, 2026 to Jun 30, 2026, it bought $4.4B and sold $7.7B of these stocks, at the quarter's prices: a net sale of $3.3B; 35 new positions and 33 sold out.

Performance of its AI picks

The AI-stock portfolio Holocene Advisors, LP declared for Q2 2026 (Form 13F), held unchanged, returned +4.2% in Q3 2026 (SMH -7.1%), ranked 790 of 1,785 active managers. Over the last 12 months, quarter after quarter: +42.4% (SMH +87.2%), ranked 245 of 1,360 active managers. Over three years, quarter after quarter: +182.6% (SMH +325.8%), ranked 138 of 784 active managers. Over five years, quarter after quarter: +211.1% (SMH +389.8%), ranked 69 of 535 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. Amazon (AMZN): $3.3B, 14.0M shares, 0.13% of the company, 7.5% of its portfolio (added this quarter); held since Q4 2024
2. Microsoft (MSFT): $1.6B, 4.3M shares, 0.06% of the company, 3.6% of its portfolio (added this quarter); held since Q4 2019 or earlier
3. NVIDIA (NVDA): $1.2B, 6.1M shares, 0.03% of the company, 2.7% of its portfolio (trimmed this quarter); held since Q1 2024
4. AMD (AMD): $693.3M, 1.2M shares, 0.07% of the company, 1.6% of its portfolio (added this quarter); held since Q2 2025
5. Seagate (STX): $444.1M, 460,184 shares, 0.20% of the company, 1.0% of its portfolio (trimmed this quarter); held since Q4 2021
6. Nebius (NBIS): $332.3M, 1.2M shares, 0.48% of the company, 0.75% of its portfolio (new position this quarter)
7. Palantir (PLTR): $319.0M, 2.7M shares, 0.11% of the company, 0.72% of its portfolio (trimmed this quarter); held since Q2 2025
8. Alphabet (GOOGL): $316.1M, 884,950 shares, 0.01% of the company, 0.71% of its portfolio (trimmed this quarter); held since Q3 2020
9. KLA (KLAC): $310.8M, 1.0M shares, 0.08% of the company, 0.70% of its portfolio (new position this quarter)
10. Applied Materials (AMAT): $267.4M, 369,894 shares, 0.05% of the company, 0.60% of its portfolio (trimmed this quarter); held since Q3 2025
11. GE Vernova (GEV): $247.8M, 210,914 shares, 0.08% of the company, 0.56% of its portfolio (trimmed this quarter); held since Q2 2024
12. Flex (FLEX): $233.9M, 1.4M shares, 0.39% of the company, 0.53% of its portfolio (added this quarter); held since Q1 2026
13. Sandisk (SNDK): $188.6M, 82,945 shares, 0.06% of the company, 0.43% of its portfolio (trimmed this quarter); held since Q1 2026
14. STMicroelectronics (STM): $186.9M, 2.5M shares, 0.28% of the company, 0.42% of its portfolio (added this quarter); held since Q1 2026
15. Qnity Electronics (Q): $154.4M, 945,505 shares, 0.45% of the company, 0.35% of its portfolio (added this quarter); held since Q4 2025

By sector

• Cloud & AI giants: $5.3B, 43% of its AI holdings, 3 companies
• Chips & compute: $2.5B, 21% of its AI holdings, 19 companies
• Equipment & test: $903.1M, 7% of its AI holdings, 10 companies
• AI software: $896.8M, 7% of its AI holdings, 11 companies
• Memory & storage: $772.1M, 6% of its AI holdings, 4 companies
• Neoclouds & data centers: $614.0M, 5% of its AI holdings, 12 companies
• Power, electrical & cooling: $537.4M, 4% of its AI holdings, 19 companies
• Servers & systems: $430.0M, 4% of its AI holdings, 8 companies
• Optics: $209.8M, 2% of its AI holdings, 7 companies
• Interconnect: $139.4M, 1% of its AI holdings, 6 companies

Biggest changes this quarter

• added to Microsoft (MSFT): +$1.2B at the quarter's price
• trimmed NVIDIA (NVDA): -$664.1M at the quarter's price
• sold out of Apple (AAPL): -$632.7M at the quarter's price
• trimmed Seagate (STX): -$605.5M at the quarter's price
• added to AMD (AMD): +$582.9M at the quarter's price
• trimmed GE Vernova (GEV): -$549.3M at the quarter's price
• trimmed Sandisk (SNDK): -$506.6M at the quarter's price
• trimmed Western Digital (WDC): -$436.5M at the quarter's price
• trimmed Coherent (COHR): -$357.5M at the quarter's price
• opened a position in Nebius (NBIS): +$332.3M at the quarter's price

Other holders of this size

• Nykredit A/S: $12.2B in 180 of these companies
• Employees Provident Fund Board: $12.3B in 28 of these companies
• Vontobel Holding Ltd.: $12.1B in 158 of these companies
• STRS OHIO: $12.4B in 182 of these companies
• NOMURA HOLDINGS INC: $12.0B in 153 of these companies
• WORLDQUANT MILLENNIUM ADVISORS LLC: $12.4B in 111 of these companies
• MENORA MIVTACHIM HOLDINGS LTD.: $11.9B in 26 of these companies
• CI INVESTMENTS INC.: $12.4B in 122 of these companies

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