J. Stern & Co. LLP

Long Only Manager

J. Stern & Co. LLP is a Long Only Manager based in New York City, NY led by Christopher Allen Rossbach, managing $1.3B across 41 long positions as of Q3 2025 with 67% concentrated in top 10 holdings.

Managing PartnerChristopher Allen Rossbach

Portfolio Value: $1.3B
Positions: 41
Top Holding: NVDA at 12.86%
Last Reported: Q3 2025

Address45 Rockefeller Plaza, 21st Floor, New York City, NY, 10111, United States

Top Holdings

Largest long holdings in J. Stern & Co. LLP's portfolio (67.2% of total portfolio)

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Holding	Sector	Position	Weight	Traded	Ownership	Owned Since
1 Nvidia NVDA	Semiconductors Technology	$169.9M	12.86%	-$10.4M Sold	0.00% 910.7K shares	Q4 2023 Held for 1y 11m
2 Amphenol APH	Hardware, Equipment & Parts Technology	$99.6M	7.54%	-$8.3M Sold	0.07% 805.1K shares	Q4 2023 Held for 1y 11m
3 Meta Platforms, Inc. META	Internet Content & Information Communication Services	$95.8M	7.25%	+$2.2M Bought	0.01% 130.4K shares	Q4 2023 Held for 1y 11m
4 Alphabet Inc. GOOG	Internet Content & Information Communication Services	$95.5M	7.23%	-$2.9M Sold	0.00% 392.2K shares	Q4 2023 Held for 1y 11m
5 Amazon AMZN	Specialty Retail Consumer Cyclical	$93.3M	7.06%	+$5.7M Bought	0.00% 425.1K shares	Q4 2023 Held for 1y 11m
6 Eaton Corporation ETN	Industrial - Machinery Industrials	$87.4M	6.61%	+$855.9K Bought	0.06% 233.5K shares	Q4 2023 Held for 1y 11m
7 Mastercard MA	Financial - Credit Services Financial Services	$77.0M	5.83%	+$570.5K Bought	0.01% 135.4K shares	Q4 2023 Held for 1y 11m
8 Raytheon Technologies RTX	Aerospace & Defense Industrials	$63.4M	4.80%	+$2.0M Bought	0.03% 379.0K shares	Q2 2024 Held for 1y 5m
9 Xylem XYL	Industrial - Machinery Industrials	$53.9M	4.08%	+$2.2M Bought	0.15% 365.7K shares	Q4 2023 Held for 1y 11m
10 Intercontinental Exchange ICE	Financial - Data & Stock Exchanges Financial Services	$52.1M	3.94%	+$4.0M Bought	0.05% 309.2K shares	Q3 2024 Held for 1y 2m

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Changes

Portfolio activity, position movements, and quarter-over-quarter changes in J. Stern & Co. LLP's latest filing

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Market Value

$1.3B

Prior: $1.2B

Q/Q Change

+13.16%

+$153.6M

Net Flows % of MV

+1.73%

Turnover Ratio

5.59%

New Purchases

5 stocks

$27.6M

Added To

19 stocks

+$73.8M

Sold Out Of

1 stocks

$16.2K

Reduced Holdings

13 stocks

-$78.5M

Increased Positions

Position	Shares Δ	Change
1 Nike NKE	New	0 → 97.9K +$6.8M
2 Home Depot HD	New	0 → 14.9K +$6.0M
3 Intuitive Surgical ISRG	New	0 → 11.4K +$5.1M
4 Gartner IT	New	0 → 18.6K +$4.9M
5 Lowe's Companies LOW	New	0 → 18.8K +$4.7M

Decreased Positions

Position	Shares Δ	Change
1 Wallbox WBX	Sold	2.5K → 0 −$16.2K
2 Adobe ADBE	-97.46%	97.9K → 2.5K −$33.7M
3 AAAU Goldman Sachs Physical Gold ETF AAAU	-49.99%	42.4K → 21.2K −$808.3K
4 Thermo Fisher Scientific TMO	-14.13%	63.2K → 54.2K −$4.3M
5 Honeywell International HON	-11.74%	264.4K → 233.3K −$6.5M