Research report

Muhlenkamp & Co Q1 2026 13F Holdings and Activity Report

Verified Q1 2026 13F holdings for Muhlenkamp & Co, covering institutional activity, data dates, SEC sources, filing limits, and methods.

Q1 2026 Data as of：2026-03-31 Read the full public report

Muhlenkamp & Co

Ronald Muhlenkamp

Period

Q2 2026

Portfolio Date

Jun 30, 2026

Stocks Held

28

Market Value

$345.3M

Holdings Value Trend

Q3 2024

Q4 2024

Q1 2025

Q2 2025

Q3 2025

Q4 2025

Q1 2026

Q2 2026

Top 5 Holdings

1

$RUSHA

Rush Enterprises, Inc.

7.0%

% of Portfolio

2

$NEM

Newmont Corporation

6.3%

% of Portfolio

3

$AEM

Agnico Eagle Mines Limited

6.2%

% of Portfolio

4

$EQT

EQT Corporation

6.2%

% of Portfolio

5

$MCK

McKesson Corporation

6.0%

% of Portfolio

Historical Positions

SymbolQ2 2026Q1 2026Q4 2025Q3 2025
RUSHA7.0%5.8%5.5%5.4%
NEM6.3%6.6%7.6%6.5%
AEM6.2%7.4%6.9%6.9%
EQT6.2%6.7%6.5%6.7%
MCK6.0%6.2%6.0%5.7%
BRK.B5.6%4.8%5.2%5.2%
MCHP5.4%---
AAPL5.2%4.2%4.6%-
URI5.1%---
RGLD5.1%5.9%5.3%4.8%

Post-Filing Contributors

Price change since reported price, ranked by portfolio contribution

MTZ+617.05%
RUSHA+58.47%
NEM+36.66%
MSFT+28.99%
MCK+11.00%

Post-Filing Detractors

Price change since reported price, ranked by portfolio contribution

MCHP-16.88%
BGC+1.78%
ICLR+0.32%
CE+2.13%

Sector Analysis

Energy11.4%
Materials26.0%
Financials15.8%
Healthcare9.8%
Technology14.8%
Industrials11.1%
Consumer Discretionary11.1%

Trading Summary

1

$ETF-SLV

0.2%

All Holdings

1

$RUSHA

7.0%

2

$NEM

6.3%

3

$AEM

6.2%

4

$EQT

6.2%

5

$MCK

6.0%

6

$BRK.B

5.6%

7

$MCHP

5.4%

8

$AAPL

5.2%

9

$URI

5.1%

10

$RGLD

5.1%

11

$WAB

4.9%

12

$BGC

4.5%

13

$NMIH

4.4%

14

$SLB

4.4%

15

$MSFT

3.5%

16

$ICLR

3.3%

17

$TMHC

3.3%

18

$LYB

2.9%

19

$CE

2.8%

20

$ETF-GLD

2.4%

21

$ETF-AMLP

2.3%

22

$EQX

1.5%

23

$TRV

0.6%

24

$GEV

0.5%

25

$EPD

0.3%

26

$RUSHB

0.2%

27

$ETF-SLV

0.2%

28

$XOM

0.1%