BROWN BROTHERS HARRIMAN & CO

Diversified mechanical Mechanical CIK 14661
League rank
#100
in Diversified mechanical · #2126 overall
Long book
$18.65B
Q1 2026
Positions
1800
Top-10 weight
34%
concentration
Last quarter
+13.9%
SPY +14.8%
Turnover
12%
of book per quarter

Strategy in plain words

auto-generated from filings

BROWN BROTHERS HARRIMAN & CO is a mechanically diversified allocator, running a $18.65B US long book across 1800 positions.

The portfolio is moderately concentrated (top 10 ≈ 34% of the book). Turnover is modest: positions are typically held for years. Current anchor positions: ISHARES CORE S&P 500 ETF, ALPHABET INC-CL C, MICROSOFT CORP, APPLE INC, AKRE FOCUS ETF.

Over the last 9 quarters its long book ran on average 1.3pp per quarter behind the S&P 500, beating the index in 2 of 9 quarters. Its holdings are mechanical (indexing / client flows), so position changes carry no stock-picking signal.

Implied long-book return vs S&P 500

methodology: positions priced quarterly, no shorts/options
Fund long book S&P 500
Q1 2024
+2.8%
Q2 2024
+7.3%
Q3 2024
-2.4%
Q4 2024
-0.4%
Q1 2025
+7.5%
Q2 2025
+5.3%
Q3 2025
+0.6%
Q4 2025
-6.0%
Q1 2026
+13.9%

Sector allocation

Technology
32%
Financials
14%
Other
11%
Consumer discretionary
10%
Healthcare
8%
Industrials
7%
Services media
7%
Utilities
4%

Long book by quarter

$13.03B
Q1 2024
$13.28B
Q2 2024
$14.71B
Q3 2024
$14.26B
Q4 2024
$14.31B
Q1 2025
$15.55B
Q2 2025
$16.42B
Q3 2025
$18.34B
Q4 2025
$18.65B
Q1 2026

What does BROWN BROTHERS own?

Q1 2026 13F
CompanySectorSharesValue% of bookChange
GOOG ALPHABET INC-CL CTechnology2.8M$810.7M4.3%-6.3%
MSFT MICROSOFT CORPTechnology1.9M$720.9M3.9%+4.5%
AAPL APPLE INCTechnology2.7M$687.4M3.7%+16.2%
BRK/B BERKSHIRE HATHAWAY INC-CL BFinancials1.1M$545.6M2.9%+1.3%
KLAC KLA CORPOther349.9K$515.2M2.8%-19.4%
AMZN AMAZON.COM INCConsumer discretionary2.3M$475.4M2.5%+1.8%
WM WASTE MANAGEMENT INCUtilities1.7M$379.2M2.0%0.0%
MA MASTERCARD INC - AServices media724.9K$362.2M1.9%-26.8%
LIN LINDE PLCMaterials723.7K$358.8M1.9%-0.3%
NVDA NVIDIA CORPTechnology1.9M$331.0M1.8%+16.4%
AMAT APPLIED MATERIALS INCTechnology879.1K$300.5M1.6%-18.1%
USB US BANCORPFinancials5.7M$298.8M1.6%+5441.0%
ORCL ORACLE CORPTechnology1.9M$277.5M1.5%-15.9%
PGR PROGRESSIVE CORPFinancials1.3M$258.2M1.4%+25.3%
WMT WALMART INCConsumer discretionary1.9M$240.2M1.3%+2.3%
COST COSTCO WHOLESALE CORPConsumer discretionary234.0K$233.2M1.3%+1.0%
LLY ELI LILLY & COHealthcare245.6K$225.9M1.2%+33.3%
AJG ARTHUR J GALLAGHER & COFinancials1.0M$223.4M1.2%+0.6%
GOOGL ALPHABET INC-CL ATechnology589.5K$169.5M0.9%+8.8%
ZTS ZOETIS INCHealthcare1.4M$167.5M0.9%-15.2%
TMO THERMO FISHER SCIENTIFIC INCOther338.6K$166.4M0.9%-26.4%
JPM JPMORGAN CHASE & COFinancials564.6K$166.1M0.9%+326.0%
ALC ALCON INCHealthcare2.1M$154.6M0.8%-12.4%
ROK ROCKWELL AUTOMATION INCOther425.8K$152.8M0.8%+27053.8%
NKE NIKE INC -CL BOther2.9M$152.1M0.8%+2.7%
TXN TEXAS INSTRUMENTS INCTechnology774.1K$150.3M0.8%-7.0%
CDNS CADENCE DESIGN SYS INCTechnology540.3K$150.1M0.8%+0.8%
MCD MCDONALD'S CORPConsumer discretionary480.2K$149.2M0.8%+34.9%
JNJ JOHNSON & JOHNSONHealthcare601.3K$147.0M0.8%+59.5%
PG PROCTER & GAMBLE CO/THEOther966.5K$139.6M0.7%+25.3%
AVGO BROADCOM INCTechnology450.8K$139.5M0.7%+348.7%
SPGI S&P GLOBAL INCServices media319.1K$135.7M0.7%-38.8%
ABT ABBOTT LABORATORIESHealthcare1.2M$126.3M0.7%-21.1%
BKNG BOOKING HOLDINGS INCIndustrials29.2K$122.9M0.7%-51.3%
GWRE GUIDEWIRE SOFTWARE INCTechnology706.2K$105.6M0.6%-3.5%
KO COCA-COLA CO/THEConsumer staples1.4M$103.7M0.6%+28.2%
ADI ANALOG DEVICES INCTechnology323.0K$102.8M0.6%+22.2%
BRK/A BERKSHIRE HATHAWAY INC-CL AFinancials137$98.4M0.5%Held
PANW PALO ALTO NETWORKS INCTechnology600.4K$96.3M0.5%+3651.5%
WWD WOODWARD INCIndustrials239.4K$85.7M0.5%-29.4%
WSO WATSCO INCConsumer discretionary226.0K$82.2M0.4%-2.2%
V VISA INC-CLASS A SHARESServices media269.1K$81.3M0.4%-12.5%
KEYS KEYSIGHT TECHNOLOGIES INTechnology271.4K$76.6M0.4%-3.4%
DAR DARLING INGREDIENTS INCConsumer staples1.2M$72.9M0.4%-15.5%
WH WYNDHAM HOTELS & RESORTS INCServices media891.7K$72.4M0.4%+11.8%
GFL GFL ENVIRONMENTAL INC-SUB VTUtilities1.7M$72.1M0.4%-4.2%
GXO GXO LOGISTICS INCIndustrials1.4M$70.9M0.4%-3.5%
DE DEERE & COIndustrials125.9K$70.9M0.4%+4.6%
PM PHILIP MORRIS INTERNATIONALConsumer staples410.9K$67.9M0.4%-8.5%
CBRE CBRE GROUP INC - AReal estate490.4K$66.4M0.4%-17.4%

13F filing history

PeriodFormFiledEntriesReported valueFlagsSource
Q1 202613F-HRMay 14, 20261800$18.65B canonicalSEC ↗
Q4 202513F-HRFeb 12, 20261833$18.34B canonicalSEC ↗
Q3 202513F-HRNov 13, 20251678$16.42B canonicalSEC ↗
Q2 202513F-HRAug 11, 20251547$15.55B canonicalSEC ↗
Q1 202513F-HRMay 14, 20251304$14.31B canonicalSEC ↗
Q4 202413F-HRFeb 12, 20251458$14.26B canonicalSEC ↗
Q3 202413F-HRNov 13, 20241420$14.71B canonicalSEC ↗
Q2 202413F-HRAug 9, 20241144$13.28B canonicalSEC ↗
Q1 202413F-HR/ANEW HOLDINGSAug 9, 20241$19.4M canonicalSEC ↗
Q1 202413F-HRMay 10, 20241158$13.01B canonicalSEC ↗