Cornerstone Investment Partners, LLC

Cornerstone Investment Partners, LLC declares $1.3B in 33 of the 220 AI and semiconductor companies tracked on Silicon Floor, as of Jun 30, 2026 (Form 13F): 43.1% of its $3.0B 13F portfolio. Largest positions: KLA (0.05% of the company) and Applied Materials (0.03% of the company). Over time: $1.3B in 33 of these companies for Q2 2026, against $511.4M in 28 for Q4 2019 (13F values as filed). From Mar 31, 2026 to Jun 30, 2026, it bought $39.6M and sold $365.1M of these stocks, at the quarter's prices: a net sale of $325.6M; 9 new positions and 8 sold out.

Performance of its AI picks

The AI-stock portfolio Cornerstone Investment Partners, LLC declared for Q2 2026 (Form 13F), held unchanged, returned -7.8% in Q3 2026 (SMH -7.1%), ranked 1602 of 1,776 active managers. Over the last 12 months, quarter after quarter: +82.2% (SMH +87.2%), ranked 57 of 1,356 active managers. Over three years, quarter after quarter: +348.0% (SMH +325.8%), ranked 23 of 782 active managers. Over five years, quarter after quarter: +421.2% (SMH +389.8%), ranked 4 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. KLA (KLAC) — $183.2M: 607,345 shares, 0.05% of the company, 6.1% of its portfolio (trimmed this quarter); held since Q1 2022
2. Applied Materials (AMAT) — $158.3M: 218,915 shares, 0.03% of the company, 5.3% of its portfolio (trimmed this quarter); held since Q4 2024
3. Alphabet (GOOGL) — $156.1M: 436,781 shares, 0.00% of the company, 5.2% of its portfolio (trimmed this quarter); held since Q4 2019 or earlier
4. Micron (MU) — $155.8M: 134,961 shares, 0.01% of the company, 5.2% of its portfolio (trimmed this quarter); held since Q3 2021
5. TSMC (TSM) — $147.6M: 309,088 shares, 0.01% of the company, 4.9% of its portfolio (added this quarter); held since Q4 2025
6. Broadcom (AVGO) — $121.7M: 322,229 shares, 0.01% of the company, 4.1% of its portfolio (trimmed this quarter); held since Q4 2019 or earlier
7. Amazon (AMZN) — $114.7M: 481,377 shares, 0.00% of the company, 3.8% of its portfolio (added this quarter); held since Q4 2025
8. Meta Platforms (META) — $112.2M: 199,210 shares, 0.01% of the company, 3.8% of its portfolio (added this quarter); held since Q1 2020
9. Microsoft (MSFT) — $65.6M: 175,752 shares, 0.00% of the company, 2.2% of its portfolio (trimmed this quarter); held since Q3 2022
10. Cummins (CMI) — $57.2M: 80,225 shares, 0.06% of the company, 1.9% of its portfolio (trimmed this quarter); held since Q4 2025
11. MKS (MKSI) — $2.7M: 6,002 shares, 0.01% of the company, 0.09% of its portfolio (trimmed this quarter); held since Q3 2022
12. EMCOR (EME) — $1.8M: 2,170 shares, 0.00% of the company, 0.06% of its portfolio; held since Q3 2021
13. ACM Research (ACMR) — $1.8M: 14,049 shares, 0.02% of the company, 0.06% of its portfolio (added this quarter); held since Q1 2026
14. Onto Innovation (ONTO) — $1.6M: 4,099 shares, 0.01% of the company, 0.05% of its portfolio (trimmed this quarter); held since Q4 2019 or earlier
15. Sanmina (SANM) — $1.1M: 4,164 shares, 0.01% of the company, 0.04% of its portfolio (new position this quarter)

By sector

• Cloud & AI giants — $448.6M, 35% of its AI holdings, 4 companies
• Equipment & test — $350.1M, 27% of its AI holdings, 10 companies
• Chips & compute — $270.5M, 21% of its AI holdings, 6 companies
• Memory & storage — $155.8M, 12% of its AI holdings, 1 company
• Power, electrical & cooling — $60.4M, 5% of its AI holdings, 4 companies
• Servers & systems — $1.3M, 0% of its AI holdings, 2 companies
• Interconnect — $1.1M, 0% of its AI holdings, 2 companies
• Optics — $710,073.00, 0% of its AI holdings, 2 companies
• Neoclouds & data centers — $412,671.00, 0% of its AI holdings, 1 company
• AI software — $224,488.00, 0% of its AI holdings, 1 company

Biggest changes this quarter

• trimmed Micron (MU): -$176.1M at the quarter's price
• trimmed Applied Materials (AMAT): -$85.1M at the quarter's price
• trimmed KLA (KLAC): -$67.0M at the quarter's price
• added to Amazon (AMZN): +$17.2M at the quarter's price
• added to Meta Platforms (META): +$15.5M at the quarter's price
• trimmed Alphabet (GOOGL): -$13.5M at the quarter's price
• trimmed Cummins (CMI): -$11.4M at the quarter's price
• added to TSMC (TSM): +$2.2M at the quarter's price
• sold out of Comfort Systems USA (FIX): -$2.1M at the quarter's price
• sold out of Lumentum (LITE): -$2.1M at the quarter's price

Follow Cornerstone Investment Partners, LLC's SEC filings (Atom feed)

All holders · All tracked companies · The AI market