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Super Investors J. Stern & Co. LLP
JS

J. Stern & Co. LLP

Quarterly 13F snapshot: US-listed longs only, no performance figures — 13F data cannot support them.

Portfolio value
$1.06B
Positions
51
Quarter ended
June 30, 2026
Filed
August 14, 2026

Reported portfolio value by quarter (11 quarters reported)

$1.32B $549M
Q4 23 Q3 24 Q2 25 Q1 26 Q2 26

$549M in Q4 2023 → $1.06B now. Hover for any quarter.

Holdings

As reported for the quarter ended June 30, 2026. Activity is the change in share count since the prior quarter's filing.

Holding % of portfolio Activity Shares Value
Nvidia Corporation 11.5% Trimmed 1.5% 609,827 $122M
Alphabet Inc 10.4% Trimmed 1.8% 311,939 $110M
Amphenol Corp 8.2% Trimmed 1.3% 492,974 $86.9M
Amazon Com Inc 7.7% Trimmed 1.5% 343,332 $81.8M
Eaton Corp PLC 6.8% Trimmed 1.0% 169,915 $72.4M
Mastercard Incorporated 5.6% Trimmed 2.1% 116,106 $59.6M
Meta Platforms Inc 5.6% Trimmed 1.4% 105,733 $59.6M
Rtx Corporation 5.3% Trimmed 2.5% 294,500 $55.9M
IE Intercontinental Exchange In 3.9% Trimmed 1.4% 335,158 $41.3M
American Tower Corp 3.3% Trimmed 2.0% 211,680 $34.6M
Xylem Inc 3.1% Trimmed 3.1% 278,187 $32.9M
HI Honeywell Intl Inc 3.1% New 146,789 $32.9M
HA Honeywell Aerospace Inc 3.1% New 146,790 $32.5M
DW Disney Walt Co 3.0% Trimmed 2.2% 332,056 $32M
Salesforce Inc 3.0% Added 11% 202,695 $31.8M
Nike Inc 2.9% Trimmed 2.2% 754,325 $31M
Abbott Laboratories 2.7% Trimmed 1.5% 311,229 $28.2M
Otis Worldwide Corp 2.6% Trimmed 1.8% 387,610 $27.8M
Thermo Fisher Scientific Inc 2.5% Trimmed 3.7% 52,801 $26.5M
Lam Research Corp 0.7% Trimmed 15% 16,789 $7.28M
EL Eli Lilly & Co 0.5% Added 6.5% 4,814 $5.77M
BH Berkshire Hathaway Inc Del 0.5% Unchanged 9,755 $4.88M
CD Cadence Design System Inc 0.5% Added 3.8% 12,994 $4.88M
Visa Inc 0.3% Added 3.6% 10,621 $3.64M
Arista Networks Inc 0.3% New 21,262 $3.61M
Block Inc 0.3% Added 5.0% 45,922 $3.49M
LE Lauder Estee Cos Inc 0.3% Added 11% 43,937 $3.47M
Booking Holdings Inc 0.3% Added 2465% 17,163 $3.06M
M Mcdonalds Corp 0.2% Added 4.7% 9,777 $2.64M
Home Depot Inc 0.2% Added 2.7% 7,492 $2.64M
Te Connectivity PLC 0.2% Added 4.3% 9,954 $2.01M
Dexcom Inc 0.2% Added 5.9% 28,232 $1.9M
Intuitive Surgical Inc 0.2% Added 4.3% 4,337 $1.72M
Linde PLC 0.2% Unchanged 3,112 $1.61M
LC Lowes Cos Inc 0.2% Added 4.7% 7,318 $1.61M
Alphabet Inc 0.1% Added 25% 3,876 $1.39M
AM Applied Matls Inc 0.1% Trimmed 30% 1,600 $1.16M
Brown Forman Corp 0.1% Trimmed 4.1% 24,439 $651K
Northrop Grumman Corp 0.0% Unchanged 740 $377K
Lockheed Martin Corp 0.0% Unchanged 705 $359K
SL Slb Limited 0.0% Unchanged 7,401 $344K
Adobe Inc 0.0% Unchanged 1,514 $310K
Zoetis Inc 0.0% Trimmed 99% 2,624 $189K
Sap Se 0.0% Added 101% 1,022 $158K
DN Draftkings Inc New 0.0% Unchanged 5,308 $134K
AH Asml Hldg Nv 0.0% Unchanged 62 $123K
IL Idexx Labs Inc 0.0% Trimmed 96% 185 $97.4K
Microsoft Corp 0.0% Unchanged 200 $74.6K
UP Union Pac Corp 0.0% Unchanged 140 $38.1K
SA Solstice Advanced Matls Inc 0.0% Unchanged 78 $6.91K
FN Fidelity Natl Information Sv 0.0% Unchanged 172 $6.69K

Timeline of changes

What changed each quarter, from the filings' own share counts. Largest moves first; most recent 8 quarters.

Q2 2026

quarter ended June 30, 2026 · filed August 14, 2026

Company Action Shares changed Value of change % of portfolio
HI Honeywell Intl Inc Exited −275,175 −$62.2M —
HI Honeywell Intl Inc New +146,789 +$32.9M 3.1%
HA Honeywell Aerospace Inc New +146,790 +$32.5M 3.1%
Zoetis Inc Trimmed −189,570 −$13.6M —
Arista Networks Inc New +21,262 +$3.61M 0.3%
Salesforce Inc Added +19,321 +$3.03M 3.0%
Booking Holdings Inc Added +16,494 +$2.94M 0.3%
IL Idexx Labs Inc Trimmed −4,501 −$2.37M —
Alphabet Inc Trimmed −5,647 −$2M 10.4%
Nvidia Corporation Trimmed −9,527 −$1.91M 11.5%

Showing the 10 largest of 40 changes.

Q1 2026

quarter ended March 31, 2026 · filed May 15, 2026

Company Action Shares changed Value of change % of portfolio
Meta Platforms Inc Trimmed −69,542,818 −$39.8B 5.9%
Mastercard Incorporated Trimmed −72,478,493 −$36.2B 5.7%
Alphabet Inc Trimmed −111,774,284 −$32.1B 8.8%
Nvidia Corporation Trimmed −125,140,953 −$21.8B 10.5%
Eaton Corp PLC Trimmed −58,859,505 −$21.1B 5.9%
Amazon Com Inc Trimmed −87,634,428 −$18.3B 7.0%
Thermo Fisher Scientific Inc Trimmed −31,454,483 −$15.5B 2.6%
Rtx Corporation Trimmed −62,119,743 −$12B 5.6%
HI Honeywell Intl Inc Trimmed −52,933,867 −$12B 6.0%
Booking Holdings Inc Trimmed −2,832,301 −$11.9B 0.3%

Showing the 10 largest of 51 changes.

Q4 2025

quarter ended December 31, 2025 · filed February 24, 2026

Company Action Shares changed Value of change % of portfolio
Nvidia Added +124,849,603 +$125M 10.7%
AC Alphabet Class C Added +111,699,704 +$112M 9.6%
A Amazon Added +87,557,736 +$87.6M 7.5%
Amphenol Added +75,964,718 +$76M 6.5%
Mastercard Added +72,461,743 +$72.5M 6.2%
M Meta Added +69,519,638 +$69.5M 5.9%
Rtx Added +62,042,825 +$62M 5.3%
Eaton Added +58,797,600 +$58.8M 5.0%
Intercontinental Exchange Added +53,798,055 +$53.8M 4.6%
H Honeywell Added +52,975,716 +$53M 4.5%

Showing the 10 largest of 43 changes.

Q3 2025

quarter ended September 30, 2025 · filed November 14, 2025

Company Action Shares changed Value of change % of portfolio
Adobe Trimmed −95,415 −$33.7M 0.1%
Nvidia Trimmed −55,852 −$10.4M 12.9%
AC Alphabet Class A Added +38,778 +$9.43M 0.8%
Amphenol Trimmed −66,736 −$8.26M 7.5%
Lam Research Added +52,619 +$7.05M 0.9%
Nike Inc. New +97,850 +$6.82M 0.5%
H Honeywell Trimmed −31,049 −$6.54M 3.7%
Home Depot New +14,914 +$6.04M 0.5%
Cadence Design Systems Added +16,208 +$5.69M 0.8%
A Amazon Added +25,916 +$5.69M 7.1%

Showing the 10 largest of 41 changes.

Q2 2025

quarter ended June 30, 2025 · filed August 14, 2025

Company Action Shares changed Value of change % of portfolio
Nvidia Added +29,101 +$4.07M 11.5%
Lam Research New +35,475 +$2.88M 0.2%
M Meta Added +4,008 +$2.66M 7.2%
Amphenol Added +26,690 +$2.39M 6.7%
A Amazon Added +11,463 +$2.37M 7.0%
Eaton Added +6,866 +$2.28M 6.6%
Mastercard Added +3,891 +$2.19M 6.5%
AC Alphabet Class C Added +10,723 +$1.84M 5.9%
Salesforce Added +5,927 +$1.62M 4.8%
Intercontinental Exchange Added +8,304 +$1.48M 4.4%

Showing the 10 largest of 33 changes.

Q1 2025

quarter ended March 31, 2025 · filed May 14, 2025

Company Action Shares changed Value of change % of portfolio
A Alcon Exited −510,692 −$43.3M —
Nvidia Added +78,702 +$8.53M 9.7%
M Meta Added +11,099 +$6.4M 6.8%
A Amazon Added +30,728 +$5.85M 7.1%
Eaton Added +19,785 +$5.38M 5.8%
Mastercard Added +9,275 +$5.08M 6.9%
H Honeywell Added +23,525 +$4.98M 5.3%
Salesforce Added +17,956 +$4.82M 5.1%
AC Alphabet Class C Added +30,725 +$4.8M 5.9%
Amphenol Added +71,421 +$4.68M 5.3%

Showing the 10 largest of 36 changes.

Q4 2024

quarter ended December 31, 2024 · filed February 14, 2025

Company Action Shares changed Value of change % of portfolio
A Alcon New +510,692 +$43.3M 4.1%
Intercontinental Exchange Added +262,762 +$39.2M 3.9%
Nvidia Trimmed −82,031 −$11M 10.9%
H Honeywell Added +39,032 +$8.82M 5.1%
A Amazon Trimmed −20,349 −$4.46M 7.4%
AC Alphabet Class C Trimmed −23,200 −$4.42M 6.5%
Salesforce Added +11,609 +$3.88M 5.7%
M Meta Trimmed −5,795 −$3.39M 6.2%
Mastercard Added +6,183 +$3.26M 6.0%
Walt Disney Added +21,704 +$2.42M 3.6%

Showing the 10 largest of 39 changes.

Q3 2024

quarter ended September 30, 2024 · filed November 13, 2024

Company Action Shares changed Value of change % of portfolio
NC Nvidia Corp Common Added +207,494 +$25.2M 12.2%
AC Amazon Com Inc Common Added +21,820 +$4.07M 7.5%
AC Alphabet Inc Class C Added +23,538 +$3.94M 6.9%
Meta Platforms Inc Added +6,858 +$3.93M 7.2%
MC Mastercard Inc Class A Added +5,447 +$2.69M 6.1%
Mcdonald's Corp New +7,583 +$2.31M 0.2%
S Salesforce.com Added +8,426 +$2.31M 4.9%
AC Amphenol Corp Class A Added +35,339 +$2.3M 5.2%
EP Eaton Corp PLC Common Added +6,565 +$2.18M 7.2%
Zoetis Inc Added +10,806 +$2.11M 4.2%

Showing the 10 largest of 38 changes.

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