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Isthmus Partners, LLC

CIK:0001639666
Investment Adviser
$800M AUM
217 holdings
Madison, WI, United States
Founded:2014
12 employees
Latest filing:Jun 30, 2025

Isthmus Partners, LLC is an SEC-registered investment adviser headquartered in Madison, Wisconsin, founded in 2014. The firm provides tailored investment management and financial planning services to individuals, families, and institutional investors, with a team offering expertise in equity and fixed income portfolio management. The company emphasizes client-focused care and long-term planning to deliver quality outcomes for a diverse clientele.

Investment Strategy

Isthmus Partners employs a disciplined blend of quantitative and fundamental research to actively manage domestic equity, fixed income, and international portfolios. Investment strategies focus on U.S. large-cap, small/mid-cap, and small-cap equities, prioritizing quality and valuation metrics that historically lead to excess returns. The firm designs client portfolios to match risk tolerance and emphasizes low turnover and long-term growth, with conservative fixed income allocation in Treasury, municipal, and high-quality corporate bonds. International exposure is managed via third-party mutual funds and ETFs, thoroughly monitored by the team.

Top Buys
G
GOOGLALPHABET INC CLASS A
+$15.8M
D
DXCMDEXCOM INC
+$14.6M
A
ABBVABBVIE INC
+$11.5M
A
AVGOBROADCOM INC
+$6.8M
M
MSFTMICROSOFT CORP
+$6.7M
Top Sells
D
DGXQUEST DIAGNOSTIC INC
-$15.2M
K
KVUEKENVUE INC COM
-$13.3M
D
DOCHEALTHPEAK PPTYS INC REIT
-$10.3M
M
MCDMCDONALDS CORP
-$4.3M
V
VREXVAREX IMAGING CORP
-$1.8M

Top Holdings

M
MSFTMICROSOFT CORP
+2.7%$23.5M
T
TTTRANE TECHNOLOGIES PLC
+2.2%$19.2M
A
AAPLAPPLE INC
+2.2%$18.7M
A
AMCRAMCOR PLC F
+2.2%$18.4M
A
AVGOBROADCOM INC
+2.0%$17.5M

Equity Positions (215)

TickerSecurityWeightMarket ValueSharesAvg CostPriceChange (QoQ)
M
MSFT
MICROSOFT CORP2.75%$23.5M47,255$118.19$497.41+$6.7M
T
TT
TRANE TECHNOLOGIES PLC2.24%$19.2M43,902$152.96$437.41+$3.7M
A
AAPL
APPLE INC2.19%$18.7M91,369$68.80$205.17-$1.2M
A
AMCR
AMCOR PLC F2.15%$18.4M2,003,404$10.36$9.19-$1.0M
A
AVGO
BROADCOM INC2.05%$17.5M63,610$167.43$275.65+$6.8M

Industry Allocation

PHARMACEUTICAL PREPARATIONS
+5.1%
SERVICES-BUSINESS SERVICES, NEC
+5.1%
STATE COMMERCIAL BANKS
+4.9%
SEMICONDUCTORS & RELATED DEVICES
+4.7%
SURGICAL & MEDICAL INSTRUMENTS & APPARATUS
+3.1%