F

First Long Island Investors, LLC

RIA/Wealth

First Long Island Investors, LLC is a RIA/Wealth based in Jericho, NY led by Robert Daniel Rosenthal, reporting $1.7B in AUM as of Q3 2025 with MSFT as the largest holding (6% allocation).

CEORobert Daniel Rosenthal
Portfolio Value
$1.3B
Positions
69
Top Holding
MSFT at 6.24%
Last Reported
Q3 2025
AddressOne Jericho Plaza, Suite 201, Jericho, NY, 11753-1673, United States

Top Holdings

Largest long holdings in First Long Island Investors, LLC's portfolio (39.3% of total portfolio)

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HoldingSectorPositionWeightTradedOwnership
Software - Infrastructure
Technology
$84.0M
6.24%
+$1.2M
Bought
0.00%
162.1K shares
2
Nvidia logo
Nvidia
NVDA
Semiconductors
Technology
$64.0M
4.76%
-$5.7M
Sold
0.00%
343.0K shares
3
Amazon logo
Amazon
AMZN
Specialty Retail
Consumer Cyclical
$62.6M
4.65%
-$1.1M
Sold
0.00%
285.0K shares
4
Abbott logo
Medical - Devices
Healthcare
$56.8M
4.22%
-$232.9K
Sold
0.02%
423.9K shares
Staffing & Employment Services
Industrials
$55.8M
4.15%
-$2.5M
Sold
0.05%
190.1K shares
Industrial - Machinery
Industrials
$45.6M
3.39%
-$190.3K
Sold
0.05%
60.1K shares
Internet Content & Information
Communication Services
$44.3M
3.29%
-$2.2M
Sold
0.00%
182.1K shares
Home Improvement
Consumer Cyclical
$39.3M
2.92%
-$252.3K
Sold
0.03%
156.4K shares
Financial - Credit Services
Financial Services
$38.8M
2.89%
-$171.2K
Sold
0.01%
68.3K shares
Semiconductors
Technology
$38.1M
2.83%
-$44.9K
Sold
0.00%
115.4K shares

Changes

Portfolio activity, position movements, and quarter-over-quarter changes in First Long Island Investors, LLC's latest filing

See all changes
Market Value
$1.3B
Prior: $1.3B
Q/Q Change
+5.55%
+$70.7M
Net Flows % of MV
-0.224%
Turnover Ratio
5.19%
New Purchases
6 stocks
$33.9M
Added To
8 stocks
+$34.2M
Sold Out Of
3 stocks
$30.5M
Reduced Holdings
40 stocks
-$40.6M

Increased Positions

PositionShares Δ
New
New
New
New
New

Decreased Positions

PositionShares Δ
Sold
2
MSCI logo
MSCI
MSCI
Sold
3
Airbnb logo
Airbnb
ABNB
Sold
4
Zoetis logo
-37.52%
-27.22%

Analytics

Portfolio insights and performance metrics for First Long Island Investors, LLC

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Sector Allocation

Technology: 29.30%TechnologyHealthcare: 15.10%HealthcareFinancial Services: 14.20%Financial ServicesIndustrials: 14.00%IndustrialsConsumer Cyclical: 11.90%Consumer CyclicalCommunication Services: 10.10%Communication ServicesConsumer Defensive: 4.20%Utilities: 1.10%ETF: 0.10%
Technology
29.30%
Healthcare
15.10%
Financial Services
14.20%
Industrials
14.00%
Consumer Cyclical
11.90%
Communication Services
10.10%
Consumer Defensive
4.20%
Utilities
1.10%
ETF
0.10%

Market Cap Distribution

Mega Cap (> $200B): 55.17%Mega Cap (> $200B)Large Cap ($10B - $200B): 42.26%Large Cap ($10B - $200B)N/A (ETF or Unknown): 2.57%
Mega Cap (> $200B)
55.17%
Large Cap ($10B - $200B)
42.26%
N/A (ETF or Unknown)
2.57%

Portfolio Concentration

Top 10 Holdings %
39.35%
Top 20 Holdings %
62.51%
Top 50 Holdings %
99.22%
Top 100 Holdings %
100.0%

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