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Grantham, Mayo, Van Otterloo & Co. LLC

Adviser
Location
Boston, MA
Portfolio Value
Large $44,389,160,315
Diversification
Diversified
Filing Date
Global Rank
#203 / 8,817 ▼ 9
Top Industry
Internet Content & Information 9.4%
Period ended 4 months ago
Filed Aug 13, 2026 · 2mo
26 quarters · since Mar 2020

Regulatory profile

From Form ADV, the SEC filer profile, 13D/13G type codes and N-CEN, never from the name.

Holder type
Adviser
Schedule 13G, Aug 6, 2026

Portfolio style

Measured from the filed 13F common-share book for Jun 30, 2026, never from the firm's own description.

Style
Diversified active
Top 10 weight 41.3%, 40.0 effective positions, active share 59.2% against the S&P 500 as of 2026-06-30; it meets none of the index-like, systematic-like or concentrated tests
Turnover
Low turnover
27.9% over the last four quarters (under 30%)
Horizon
Long horizon
Value-weighted holding period 20.9 quarters (12+), a floor since 60.5% of the book was already held when coverage starts

Closest benchmark: the S&P 500 as of 2026-06-30, active share 59.2%; sector active share 25.4% against the combined 13F book's sector weights.

Over time 26 measured quarters

How the bands are measured

Style bands measure the filed 13F common-share book each closed quarter, tested in this order. Unknown: under $10,000,000 of valued equity or 5 stocks. Index-like (100+ stocks): active share of 20% or less against the closest benchmark, which is the S&P 500, S&P MidCap 400, S&P SmallCap 600, Russell 1000, Russell 2000, Nasdaq-100 or Dow Jones Industrial Average (weighted by an index-tracking fund's reported holdings or the index's constituents nearest the quarter end, over the names resolved to companies, and only when those are 90%+ of its weight) or every 13F filer's combined book, or index series holding 80%+ of the registered fund assets it advises (N-CEN) and equal to 50%+ of its book. Systematic-like: 500+ stocks, 100%+ annual turnover and a top 10 weight of 25% or less. Concentrated: a top 10 weight of 60%+ or 12 or fewer effective positions. Diversified active: none of these. Turnover is the smaller of buys and sells over average equity value, summed over four quarters: low under 30%, high 100%+. Horizon is the value-weighted number of quarters each position has been held: short under 4, long 12+.

Clone Performance

Build a hypothetical price-return history from this filer's public 13F holdings.

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Portfolio Concentration

663 tracked positions · as of Jun 30, 2026 · Δ vs Mar 31, 2026
Top Position
5.7%
−0.2 pts
Top 5
24.9%
+0.2 pts
Top 10
41.2%
+1.0 pts
HHI
250
Sep 2023 → Jun 2026 · range 149 – 267
Diversified+7

Portfolio Trend

26 quarters · across all stocks

Sector Breakdown

As of Jun 30, 2026
Sector % Portfolio Value
Technology 35.3% $15,666,255,095
Healthcare 22.2% $9,850,804,923
Communication Services 11.9% $5,303,203,097
Financial Services 10.9% $4,850,952,032
Consumer Cyclical 7.1% $3,151,474,908
Consumer Defensive 4.8% $2,132,213,611
Industrials 2.9% $1,289,000,821
Basic Materials 2.0% $899,064,173
Energy 1.9% $839,095,035
Utilities 0.5% $237,747,680
Unclassified 0.3% $131,604,346
Real Estate 0.1% $37,744,594

Last Quarter's Activity

Export CSV
Jun 30, 2026 vs Mar 31, 2026

Added To

Positions the filer increased
25 positions
Ticker Δ Shares Shares Value Open
— +337,745 540,984 $27,073,544

Trimmed

Positions the filer reduced
25 positions
Ticker Δ Shares Shares Value Open

New Positions

Positions the filer opened this quarter
25 positions
Ticker Shares Value Open
— 311,237 $29,029,074
— 137,395 $18,236,438

Sold Out

Positions the filer fully exited
25 positions
Ticker Shares Value Open

Portfolio Positions

Export CSV View 13F filing
663 tracked positions · $44,389,160,315 total · filing declares 663 positions · $44,399,773,809 · as of Jun 30, 2026
Showing 1–50 of 663 positions by value · page 1 of 14
Ticker Company Shares Value (USD) % of Portfolio History

Showing the top 50 of 663 positions. Create a free account to see every position, past quarters, search, filters and CSV export.

Covers the securities this platform tracks: U.S.-listed common stock and the put/call positions reported on it. A 13F can also report security types outside that coverage — preferred shares, bonds, warrants, untracked share classes — so the filing's own declared total can exceed the figures above. The source filing is linked at the top of this table.