Grantham Mayo Van Otterloo & Co LLC is an SEC-registered investment adviser based in Boston, MA that reports managing 37 hedge funds on Form ADV. It reports $81.0 billion in regulatory assets under management. Its private funds, of all types, hold $19.1 billion in gross assets. Its disclosed U.S. stock holdings returned an estimated +6.2% 2026 YTD through Jun 30 (S&P 500: +9.5%), based on 13F filings. Over a longer period they returned an estimated +24.0% from Q3 2024 to Q2 2026, compared with +37.2% for the S&P 500, based on 13F filings.
- Regulatory assets under management
- $81.0 billionForm ADV Item 5.F
- Gross assets of private funds
- $19.1 billionAll private fund types, Form ADV
- Hedge funds managed
- 3738 private funds in total
- Employees
- 365Form ADV Item 5.A
- Registration
- SEC-registered adviserCRD 106220
- Latest Form ADV
- 05/11/2026Disciplinary disclosures: none reported
Estimated 13F portfolio performance
| Quarter | Est. 13F return | S&P 500 |
|---|---|---|
| Q2 2026 | +10.2% | +14.8% |
| Q1 2026 | -3.6% | -4.6% |
| Q4 2025 | +5.2% | +2.4% |
| Q3 2025 | +7.1% | +7.8% |
| Q2 2025 | +6.7% | +10.4% |
| Q1 2025 | -3.0% | -4.5% |
| Q4 2024 | -4.4% | +2.1% |
| Q3 2024 | +4.6% | +5.4% |
Estimate of the firm's disclosed long U.S. stock portfolio from its quarterly 13F filings, holding each quarter-end portfolio to the next quarter-end at prices implied by all 13F filers. It is a price return before dividends and fees, ignores shorts, options, bonds, cash and trading within the quarter, and is not the return of any fund. Disclosures
Largest disclosed holdings
- Microsoft Corp Com$2.5 billion
- Lam Research Corp Com New$2.4 billion
- Alphabet, Inc Voting Class$2.2 billion
- Apple Inc Com$2.0 billion
- Meta Platforms, Inc.$1.9 billion
- Johnson & Johnson Com$1.8 billion
- Amazon Com Inc Com$1.5 billion
- Texas Instrs Inc$1.4 billion
- Thermo Fisher Scientific Inc$1.4 billion
- Broadcom Inc$1.2 billion
As of 2026-06-30, from 13F filing by Grantham, Mayo, Van Otterloo & Co. LLC.
From SEC filings. Firm data comes from the SEC's Form ADV data as of Oct 2, 2026; performance estimates come from Form 13F. HedgeMountain has not verified this information, and it is not an offer, solicitation or recommendation. Full disclosures