ALLIANCEBERNSTEIN L.P.

ALLIANCEBERNSTEIN L.P. declares $124.2B in 214 of the 230 AI and semiconductor companies tracked on Silicon Floor, as of Jun 30, 2026 (Form 13F): 38.5% of its $302.3B 13F portfolio. Largest positions: NVIDIA (0.40% of the company) and Alphabet (0.39% of the company). Over time: $124.2B in 214 of these companies for Q2 2026, against $37.2B in 146 for Q4 2019 (13F values as filed). From Mar 31, 2026 to Jun 30, 2026, it bought $9.9B and sold $13.4B of these stocks, at the quarter's prices: a net sale of $3.5B; 8 new positions.

Performance of its AI picks

The AI-stock portfolio ALLIANCEBERNSTEIN L.P. declared for Q2 2026 (Form 13F), held unchanged, returned +3.0% in Q3 2026 (SMH -7.1%), ranked 1022 of 1,785 active managers. Over the last 12 months, quarter after quarter: +21.4% (SMH +87.2%), ranked 1126 of 1,360 active managers. Over three years, quarter after quarter: +144.1% (SMH +325.8%), ranked 430 of 784 active managers. Over five years, quarter after quarter: +145.4% (SMH +389.8%), ranked 340 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. NVIDIA (NVDA): $16.8B, 96.2M shares, 0.40% of the company, 5.6% of its portfolio (trimmed this quarter); held since Q4 2019 or earlier
2. Alphabet (GOOGL): $13.9B, 48.4M shares, 0.39% of the company, 4.6% of its portfolio (trimmed this quarter); held since Q4 2019 or earlier
3. Apple (AAPL): $10.9B, 43.0M shares, 0.30% of the company, 3.6% of its portfolio (added this quarter); held since Q4 2019 or earlier
4. Microsoft (MSFT): $9.6B, 26.0M shares, 0.35% of the company, 3.2% of its portfolio (trimmed this quarter); held since Q4 2019 or earlier
5. Amazon (AMZN): $7.9B, 37.7M shares, 0.35% of the company, 2.6% of its portfolio (trimmed this quarter); held since Q4 2019 or earlier
6. Broadcom (AVGO): $7.1B, 23.0M shares, 0.48% of the company, 2.4% of its portfolio (trimmed this quarter); held since Q4 2019 or earlier
7. Meta Platforms (META): $6.8B, 11.9M shares, 0.47% of the company, 2.3% of its portfolio (trimmed this quarter); held since Q4 2019 or earlier
8. Applied Materials (AMAT): $3.9B, 5.4M shares, 0.68% of the company, 0.61% of its portfolio (trimmed this quarter); held since Q4 2019 or earlier
9. Micron (MU): $3.9B, 3.3M shares, 0.30% of the company, 0.37% of its portfolio (added this quarter); held since Q4 2019 or earlier
10. TSMC (TSM): $3.4B, 7.0M shares, 0.14% of the company, 0.79% of its portfolio (trimmed this quarter); held since Q4 2019 or earlier
11. AMD (AMD): $3.1B, 5.4M shares, 0.33% of the company, 0.36% of its portfolio (added this quarter); held since Q4 2019 or earlier
12. Texas Instruments (TXN): $2.6B, 8.8M shares, 0.96% of the company, 0.56% of its portfolio (added this quarter); held since Q4 2019 or earlier
13. KLA (KLAC): $2.3B, 7.5M shares, 0.57% of the company, 3.6% of its portfolio (added this quarter); held since Q4 2019 or earlier
14. Eaton (ETN): $1.7B, 4.6M shares, 1.2% of the company, 0.55% of its portfolio (added this quarter); held since Q4 2019 or earlier
15. ASML (ASML): $1.5B, 765,221 shares, 0.20% of the company, 0.33% of its portfolio (trimmed this quarter); held since Q4 2019 or earlier

By sector

• Cloud & AI giants: $49.3B, 40% of its AI holdings, 6 companies
• Chips & compute: $38.1B, 31% of its AI holdings, 36 companies
• Equipment & test: $10.2B, 8% of its AI holdings, 26 companies
• Power, electrical & cooling: $8.8B, 7% of its AI holdings, 47 companies
• Memory & storage: $5.5B, 4% of its AI holdings, 7 companies
• AI software: $4.7B, 4% of its AI holdings, 31 companies
• Interconnect: $3.8B, 3% of its AI holdings, 11 companies
• Neoclouds & data centers: $1.5B, 1% of its AI holdings, 26 companies
• Servers & systems: $1.4B, 1% of its AI holdings, 12 companies
• Optics: $800.4M, 1% of its AI holdings, 12 companies

Biggest changes this quarter

• trimmed Amazon (AMZN): -$3.1B at the quarter's price
• trimmed Microsoft (MSFT): -$2.1B at the quarter's price
• added to Micron (MU): +$1.9B at the quarter's price
• added to AMD (AMD): +$1.6B at the quarter's price
• added to KLA (KLAC): +$988.5M at the quarter's price
• trimmed Astera Labs (ALAB): -$722.4M at the quarter's price
• trimmed TSMC (TSM): -$694.0M at the quarter's price
• added to Trane (TT): +$609.7M at the quarter's price
• trimmed Broadcom (AVGO): -$574.4M at the quarter's price
• added to Quanta Services (PWR): +$554.6M at the quarter's price

Schedule 13D/G declarations

• Calix (CALX): 13G filed May 18, 2026: 3.3M shares as of Mar 31, 2026, 5.0% as declared
• Astera Labs (ALAB): 13G filed Aug 13, 2025: 6.4M shares as of Jun 30, 2025, 3.9% as declared
• Astera Labs (ALAB): 13G filed May 14, 2025: 8.4M shares as of Mar 31, 2025, 5.2% as declared
• Calix (CALX): 13G filed Feb 5, 2025: 2.2M shares as of Dec 31, 2024, 3.4% as declared
• Semtech (SMTC): 13G filed Feb 5, 2025: 3.3M shares as of Dec 31, 2024, 3.9% as declared
• Semtech (SMTC): 13G filed Nov 15, 2024: 4.4M shares as of Sep 30, 2024, 5.9% as declared

Other holders of this size

• Barclays: $115.8B in 224 of these companies
• Fisher Asset Management, LLC: $129.7B in 113 of these companies
• MASSACHUSETTS FINANCIAL SERVICES CO /MA/: $115.5B in 133 of these companies
• WELLS FARGO & COMPANY/MN: $146.9B in 226 of these companies
• Janus Henderson: $110.1B in 205 of these companies
• Deutsche Bank: $149.6B in 219 of these companies
• HSBC HOLDINGS PLC: $105.9B in 184 of these companies
• ROYAL BANK OF CANADA: $161.0B in 226 of these companies

Follow ALLIANCEBERNSTEIN L.P.'s SEC filings (Atom feed)

All holders · Who owns each AI company · All tracked companies · The AI market