Whale Rock Capital Management LLC

New 13F: Q3 2026

Whale Rock Capital Management LLC filed its 13F for the quarter ended Sep 30, 2026 on Nov 13, 2026: $10.0B in AI and semiconductor stocks; $2.8B bought and $2.6B sold against its previous quarter, at the quarter's prices.

sold out of Astera Labs (ALAB): -$757.3M at the quarter's price
trimmed Sandisk (SNDK): -$673.2M at the quarter's price
added to Meta Platforms (META): +$538.2M at the quarter's price
opened a position in Microsoft (MSFT): +$441.9M at the quarter's price
trimmed Alphabet (GOOGL): -$406.9M at the quarter's price
opened a position in Hewlett Packard Enterprise (HPE): +$369.0M at the quarter's price
added to NVIDIA (NVDA): +$268.0M at the quarter's price
sold out of Western Digital (WDC): -$255.9M at the quarter's price
opened a position in Vicor (VICR): +$235.2M at the quarter's price
trimmed Lam Research (LRCX): -$194.6M at the quarter's price

Whale Rock Capital Management LLC declares $11.2B in 29 of the 230 AI and semiconductor companies tracked on Silicon Floor, as of Jun 30, 2026 (Form 13F): 90.1% of its $12.5B 13F portfolio. Largest positions: Sandisk (0.42% of the company) and AMD (0.09% of the company). Over time: $11.2B in 29 of these companies for Q2 2026, against $2.3B in 14 for Q4 2019 (13F values as filed). From Mar 31, 2026 to Jun 30, 2026, it bought $2.6B and sold $2.0B of these stocks, at the quarter's prices: a net purchase of $588.5M; 4 new positions and 5 sold out.

Performance of its AI picks

The AI-stock portfolio Whale Rock Capital Management LLC declared for Q2 2026 (Form 13F), held unchanged, returned -14.9% in Q3 2026 (SMH -7.1%), ranked 1710 of 1,785 active managers. Over the last 12 months, quarter after quarter: +75.6% (SMH +87.2%), ranked 72 of 1,360 active managers. Over three years, quarter after quarter: +407.5% (SMH +325.8%), ranked 14 of 784 active managers. Over five years, quarter after quarter: +400.2% (SMH +389.8%), ranked 7 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

Sandisk (SNDK): $1.4B, 596,545 shares, 0.42% of the company, 10.9% of its portfolio (trimmed this quarter); held since Q4 2025
AMD (AMD): $877.0M, 1.5M shares, 0.09% of the company, 7.0% of its portfolio (added this quarter); held since Q1 2026
Alphabet (GOOGL): $856.4M, 2.4M shares, 0.02% of the company, 6.9% of its portfolio (trimmed this quarter); held since Q3 2025
TTM Technologies (TTMI): $791.2M, 4.2M shares, 4.0% of the company, 6.4% of its portfolio (added this quarter); held since Q2 2025
Astera Labs (ALAB): $757.3M, 1.6M shares, 0.90% of the company, 6.1% of its portfolio (new position this quarter)
Amazon (AMZN): $583.4M, 2.4M shares, 0.02% of the company, 4.7% of its portfolio (added this quarter); held since Q4 2023
Corning (GLW): $570.6M, 2.2M shares, 0.26% of the company, 4.6% of its portfolio (trimmed this quarter); held since Q2 2025
MKS (MKSI): $565.5M, 1.3M shares, 1.9% of the company, 4.5% of its portfolio (trimmed this quarter); held since Q1 2026
Celestica (CLS): $538.6M, 1.5M shares, 1.2% of the company, 4.3% of its portfolio (trimmed this quarter); held since Q3 2023
Bloom Energy (BE): $486.8M, 1.6M shares, 0.54% of the company, 3.9% of its portfolio (trimmed this quarter); held since Q1 2025
Coherent (COHR): $482.1M, 1.2M shares, 0.62% of the company, 3.9% of its portfolio (added this quarter); held since Q1 2024
Fabrinet (FN): $418.6M, 744,765 shares, 2.1% of the company, 3.4% of its portfolio (added this quarter); held since Q3 2023
SiTime (SITM): $418.0M, 560,701 shares, 1.9% of the company, 3.4% of its portfolio (trimmed this quarter); held since Q2 2025
MACOM (MTSI): $376.1M, 988,785 shares, 1.3% of the company, 3.0% of its portfolio (trimmed this quarter); held since Q4 2025
Viavi (VIAV): $328.3M, 6.9M shares, 2.8% of the company, 2.6% of its portfolio (added this quarter); held since Q1 2026

By sector

Optics: $1.8B, 16% of its AI holdings, 4 companies
Chips & compute: $1.8B, 16% of its AI holdings, 8 companies
Memory & storage: $1.8B, 16% of its AI holdings, 3 companies
Cloud & AI giants: $1.8B, 16% of its AI holdings, 5 companies
Servers & systems: $1.3B, 12% of its AI holdings, 2 companies
Interconnect: $1.1B, 10% of its AI holdings, 2 companies
Equipment & test: $887.3M, 8% of its AI holdings, 2 companies
Power, electrical & cooling: $486.8M, 4% of its AI holdings, 1 company
AI software: $300.6M, 3% of its AI holdings, 2 companies

Biggest changes this quarter

added to AMD (AMD): +$836.8M at the quarter's price
opened a position in Astera Labs (ALAB): +$757.3M at the quarter's price
trimmed Sandisk (SNDK): -$461.7M at the quarter's price
sold out of Advanced Energy Industries (AEIS): -$329.8M at the quarter's price
trimmed Broadcom (AVGO): -$255.9M at the quarter's price
opened a position in Snowflake (SNOW): +$225.2M at the quarter's price
sold out of Tower Semiconductor (TSEM): -$187.2M at the quarter's price
added to Viavi (VIAV): +$162.5M at the quarter's price
added to Amazon (AMZN): +$149.7M at the quarter's price
opened a position in Seagate (STX): +$143.3M at the quarter's price

Schedule 13D/G declarations

Celestica (CLS): 13G filed Aug 14, 2025: 4.6M shares as of Jun 30, 2025, 4.0% as declared
Celestica (CLS): 13G filed Feb 14, 2025: 5.9M shares as of Dec 31, 2024, 5.1% as declared

Other holders of this size

CAPITOLIS LIQUID GLOBAL MARKETS LLC: $11.2B in 64 of these companies
Life Cycle Investment Partners Ltd: $11.2B in 45 of these companies
Tredje AP-fonden: $11.2B in 91 of these companies
CIBC WORLD MARKET INC.: $11.3B in 134 of these companies
ING GROEP NV: $11.1B in 97 of these companies
Lansforsakringar Fondforvaltning AB (publ): $11.3B in 98 of these companies
Rathbones Group PLC: $11.1B in 79 of these companies
AustralianSuper Pty Ltd: $11.4B in 60 of these companies

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