Calamos Advisors LLC

John P. Calamos, Sr.

Period

Q1 2026

Portfolio Date

Mar 31, 2026

Stocks Held

836

Market Value

$19.3B

Portfolio Analysis

AIPreview
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I. Institutional Overview

As of the first quarter of 2026, the investment landscape continues to be shaped by the strategic maneuvers of major institutional players. Among these, Calamos Advisors LLC, led by the seasoned investment veteran John P. Calamos, Sr., stands as a prominent figure in the global asset management space. This analysis delves into the institutional holdings and...

The scale of Calamos Advisors LLC is a testament to its long-standing reputation and the trust placed in its management by a diverse range of investors. A portfolio value exceeding $19 billion places the institution in a tier where its actions can significantly influence market sentiment, particularly within the specific sectors where it maintains high...

Analyzing the concentration of the portfolio reveals a fascinating psychological portrait of the institution. With 836 holdings, one might expect a highly fragmented distribution of capital. Yet, a closer look at the top-tier positions indicates that Calamos Advisors LLC is far from being a simple index-tracker. The institution exhibits a "barbell"...

Based on the latest available 13F filing.

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Holdings Value Trend

Q2 2024

Q3 2024

Q4 2024

Q1 2025

Q2 2025

Q3 2025

Q4 2025

Q1 2026

Top 5 Holdings

1

$NVDA

NVIDIA Corporation

5.1%

% of Portfolio

2

$AAPL

Apple Inc.

4.3%

% of Portfolio

3

$MSFT

Microsoft Corporation

3.1%

% of Portfolio

4

$GOOGL

Alphabet Inc.

2.6%

% of Portfolio

5

$AMZN

Amazon.com, Inc.

2.5%

% of Portfolio

Historical Positions

SymbolQ1 2026Q4 2025Q3 2025Q2 2025
NVDA5.1%5.0%5.2%4.7%
AAPL4.3%4.1%3.8%3.3%
MSFT3.1%3.9%4.2%4.4%
GOOGL2.6%2.7%2.0%1.6%
AMZN2.5%2.7%2.6%2.8%
AVGO1.8%1.8%1.7%1.5%
ETF-SPY1.6%---
META1.5%1.6%1.8%2.0%
TSLA1.1%1.4%1.3%1.0%
GOOG1.0%1.1%--

Post-Filing Contributors

Price change since reported price, ranked by portfolio contribution

NVDA+17.47%
GOOGL+24.42%
AAPL+16.49%
AMZN+15.96%
AVGO+24.57%

Post-Filing Detractors

Price change since reported price, ranked by portfolio contribution

XOM-13.59%
NFLX-15.48%
CVX-10.19%
PLTR-10.39%
JNJ-2.50%

Sector Analysis

Energy4.1%
Others1.2%
Materials1.9%
Utilities1.6%
Financials11.3%
Healthcare9.7%
Technology34.3%
Industrials8.8%

Trading Summary

1

$ETF-IWV

0.2%

2

$EA

0.2%

3

$CWAN

0.1%

4

$ETF-FENI

0.1%

5

$BHF

0.1%

6

$RPRX

0.1%

7

$ETF-EFA

0.1%

8

$ETF-AGG

0.1%

9

$SNDK

0.1%

10

$WDC

0.1%

11

$CAH

0.0%

12

$ETF-BIL

0.0%

13

$ETF-CAIQ

0.0%

14

$MCO

0.0%

15

$DGX

0.0%

16

$ETF-USMV

0.0%

17

$ETF-VOO

0.0%

18

$NDAQ

0.0%

19

$SKM

0.0%

20

$STX

0.0%

All Holdings

1

$NVDA

5.1%

2

$AAPL

4.3%

3

$MSFT

3.1%

4

$GOOGL

2.6%

5

$AMZN

2.5%

6

$AVGO

1.8%

7

$ETF-SPY

1.6%

8

$META

1.5%

9

$TSLA

1.1%

10

$GOOG

1.0%

11

$LLY

1.0%

12

$JPM

0.8%

13

$V

0.8%

14

$XOM

0.8%

15

$WMT

0.7%

16

$JNJ

0.7%

17

$ETF-IVV

0.6%

18

$NFLX

0.6%

19

$GS

0.5%

20

$CVX

0.5%

21

$WFC

0.5%

22

$GEV

0.5%

23

$ETF-IVW

0.5%

24

$BRK.B

0.5%

25

$ETF-IVE

0.5%

26

$MA

0.4%

27

$BAC

0.4%

28

$LIN

0.4%

29

$MU

0.4%

30

$PLTR

0.4%

31

$HD

0.4%

33

$ABBV

0.4%

34

$AMAT

0.4%

35

$PM

0.3%

36

$AMD

0.3%

37

$RTX

0.3%

38

$CAT

0.3%

39

$MRK

0.3%

40

$COST

0.3%

41

$CSCO

0.3%

43

$LRCX

0.3%

44

$MS

0.3%

45

$C

0.3%

46

$GE

0.3%

47

$MPC

0.3%

48

$AXP

0.3%

49

$ISRG

0.3%

50

$KO

0.3%