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First Long Island Investors, LLC

CIK:0001490429
Investment Adviser
$1B AUM
65 holdings
Jericho, NY, United States
Founded:1983
18 employees
Latest filing:Jun 30, 2025

First Long Island Investors, LLC is a boutique wealth management firm headquartered in Jericho, New York. The firm was founded in 1983 by Robert D. Rosenthal and Ralph F. Palleschi, originally as a predecessor corporation, and now operates as an SEC-registered investment adviser. It provides comprehensive investment and financial services, including money management and planning, to high net worth individuals, corporations, pension and profit-sharing plans, pooled investment vehicles, and charitable organizations. The firm is dedicated to individualized, long-term wealth management with a focus on asset preservation and growth. As of March 2025, it manages approximately $1.2 billion in assets and maintains a service-driven culture with a client-focused approach.

Investment Strategy

First Long Island Investors, LLC employs a long-term wealth management approach centered on individualized asset allocation and prudent investment selection. Their philosophy emphasizes diversification among various asset classes, including equities, fixed income, and alternative investments, to balance preservation and growth of client assets. The firm develops customized portfolios to meet the distinct needs of high net worth clients and institutional investors, aiming for sustainable value creation through disciplined, research-driven decision-making. The firm does not invest through underlying managers for certain partnerships and charges fees based on advised capital contributions.

Top Buys
M
MSFTMICROSOFT CORP COM
+$19.4M
A
AVGOBROADCOM LTD SGD
+$19.1M
N
NVDANVIDIA CORPORATION COM
+$17.2M
A
AMZNAMAZON COM INC COM
+$8.7M
A
APHAMPHENOL CORP NEW CL A
+$8.5M
Top Sells
U
UNHUNITEDHEALTH GROUP INC COM
-$38.8M
A
AAPLAPPLE INC COM
-$17.3M
S
STZCONSTELLATION BRANDS CL A
-$9.3M
A
ABNBAIRBNB INC CL A
-$4.1M
S
SNPSSYNOPSYS INC
-$3.8M

Top Holdings

M
MSFTMICROSOFT CORP COM
+6.2%$79.5M
A
AMZNAMAZON COM INC COM
+5.0%$63.6M
A
ADPAUTOMATIC DATA PROCESSING INC
+4.8%$61.3M
N
NVDANVIDIA CORPORATION COM
+4.6%$59.0M
A
ABTABBOTT LABS COM
+4.5%$57.9M

Equity Positions (64)

TickerSecurityWeightMarket ValueSharesAvg CostPriceChange (QoQ)
M
MSFT
MICROSOFT CORP COM6.24%$79.5M159,863$65.24$497.41+$19.4M
A
AMZN
AMAZON COM INC COM4.99%$63.6M289,848$45.12$219.39+$8.7M
A
ADP
AUTOMATIC DATA PROCESSING INC4.81%$61.3M198,748$143.33$308.40+$397.8K
N
NVDA
NVIDIA CORPORATION COM4.63%$59.0M373,492$17.85$157.99+$17.2M
A
ABT
ABBOTT LABS COM4.54%$57.9M425,620$74.40$136.01+$1.3M

Industry Allocation

PHARMACEUTICAL PREPARATIONS
+12.1%
SERVICES-PREPACKAGED SOFTWARE
+10.3%
SERVICES-BUSINESS SERVICES, NEC
+9.7%
SEMICONDUCTORS & RELATED DEVICES
+9.3%
SERVICES-COMPUTER PROGRAMMING, DATA PROCESSING, ETC.
+7.1%