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Ronald Muhlenkamp
Portfolio: Top Holdings & Stock Picks

Muhlenkamp & Co INC

Value Investing Contrarian Investing

Ronald Muhlenkamp (Muhlenkamp & Co INC) disclosed 31 total holdings in its latest 13F filing dated 2025-09-30, with a portfolio value of $367.9 M billion and a turnover rate of 2.8%.

Portfolio Value
$367.9 M
Total Holdings
31
Latest Filing
Q3 2025
Nov 07, 2025
Turnover Rate
2.82%

Ronald Muhlenkamp Top Holdings of 2025-09-30

Ticker Name Shares Value % of Portfolio Time Held % Change
AEM
151,311 $25.5 M 6.93% 0.75 Years +0.02%
EQT
450,963 $24.55 M 6.67% 2.3 Years -0.01%
NEM
283,943 $23.94 M 6.51% 1.7 Years +0.03%
MTZ
105,786 $22.51 M 6.12% 2.3 Years -0.28%
MCK
27,108 $20.94 M 5.69% 2.3 Years +0.09%
374,051 $20 M 5.44% 2.3 Years +0.07%
38,380 $19.3 M 5.24% 2.3 Years +0.08%
466,347 $17.88 M 4.86% 2.3 Years +0.11%
87,585 $17.57 M 4.78% 2.3 Years +0.07%
32,347 $16.75 M 4.55% 2.3 Years +0.11%

Recent Moves

Significant New Position
+73,467 Shares | +$12.86 M Value
Continues to build a major stake in the Healthcare sector
Q3 2025
Added to Core Holding
+33,247 Shares | +$1.4 M Value
Modest increase in Materials
Q3 2025
Reduced Exposure to Position
-22,484 Shares | -$786,489.48 Value
Reduced exposure to Consumer Discretionary
Q3 2025
Complete Exit
-229,069 Shares | -$6.07 M Value
Cleared DOW, sector remains in portfolio
Q3 2025

Ronald Muhlenkamp's Historical Top Holdings Breakdown

Portfolio Date:

Ronald Muhlenkamp Top Stock Picks

Ticker Name Date Activity Shares Shares Change Value Change
09/30/2025 New Buy 73,467 73,467 $12.86 M
LYB
09/30/2025 New Buy 184,075 184,075 $9.03 M
DOW
09/30/2025 Sold Out 229,069 -229,069 $6.07 M
EQX
09/30/2025 New Buy 514,257 514,257 $5.77 M
RIG
09/30/2025 Sold Out 1.06 M -1.06 M $2.74 M
09/30/2025 New Buy 7,924 7,924 $1.59 M
CE
09/30/2025 Add 22.0% 184,455 33,247 $1.4 M
GEV
09/30/2025 New Buy 1,426 1,426 $876,847
RCL
09/30/2025 New Buy 2,671 2,671 $864,282
JD
09/30/2025 Reduce -11.0% 181,412 -22,484 $786,489.48

Ronald Muhlenkamp's Sector Breakdowns

Portfolio Date:

About Ronald Muhlenkamp

Ronald Muhlenkamp is the founder and portfolio manager of Muhlenkamp & Co., Inc., an investment management firm he established in 1977. He is known for his independent thinking and his decades-long career managing the Muhlenkamp Fund. He has authored books and articles sharing his straightforward, business-owner's approach to investing.

Frequently Asked Questions

As of 2025-09-30, Ronald Muhlenkamp holds 31 stocks. Top positions include AEM, EQT, NEM, MTZ, MCK. For full portfolio details, please visit Ronald Muhlenkamp’s portfolio.

In Q3 2025, Ronald Muhlenkamp’s largest purchase by dollar amount was ICLR. For complete transaction details, please visit Ronald Muhlenkamp’s portfolio.

According to the 13F filing for Q3 2025, Ronald Muhlenkamp increased their stake in CE.

Ronald Muhlenkamp’s firm may occasionally request confidential treatment under SEC rule 13F-HR, which allows temporary non-disclosure of certain positions.