Calamos Advisors Portfolio holdings
Calamos Advisors is an investment manager whose roots go back to 1977, when John P. Calamos Sr. began advising clients on strategies built around convertible securities. It added an equity strategy in 1989 and a U.S. growth stock strategy in 1990, then expanded into high yield, fixed income, global long/short, small-cap and sustainable equity strategies. The firm offers its strategies through mutual funds, closed-end funds, ETFs and interval funds, as well as institutional accounts and individually managed portfolios. The firm takes an active, high-conviction approach, with teams that combine top-down views on the economy and markets with company-level research, guided by an Investment Committee chaired by John P. Calamos Sr. Calamos Advisors is a wholly owned subsidiary of Calamos Investments LLC and also serves high net worth individuals and private foundations through wealth management.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Calamos Tax-Aware Collateral ETF
CBOX
|
+$1.08B |
| 2 |
Alphabet Inc Depositary Shares Series A Preferred Stock
GOOGM
|
+$234M |
| 3 |
Alphabet Inc Depositary Shares Series B Preferred Stock
GOOGN
|
+$231M |
| 4 |
Super Micro Computer Depositary Shares 7% Series A Preferred Stock
SMCIP
|
+$81.3M |
| 5 |
Roku
ROKU
|
+$39.6M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$502M |
| 2 |
Apple
AAPL
|
+$244M |
| 3 |
NVIDIA
NVDA
|
+$231M |
| 4 |
Alphabet (Google) Class A
GOOGL
|
+$194M |
| 5 |
iShares Core S&P 500 ETF
IVV
|
+$188M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Miscellaneous | 38.82% |
| 2 | Technology | 22.91% |
| 3 | Communication Services | 7.77% |
| 4 | Financials | 6.69% |
| 5 | Consumer Discretionary | 6% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | Held Since | |
|---|---|---|---|---|---|---|---|
|
1
NVIDIA
NVDA
$5.16T
| $1.41B | 4.7% |
7,059,874
-1,125,713
| -14% | -$231M |
2016 Q3
39 quarters
|
|
|
2
Apple
AAPL
$5.09T
| $1.14B | 3.78% |
3,925,539
-853,256
| -18% | -$244M |
2013 Q2
52 quarters
|
|
|
3
Calamos Tax-Aware Collateral ETF
CBOX
$1.3B
| $1.08B | 3.58% |
+10,693,254
| New | +$1.08B |
2026 Q2
0 quarters
|
|
|
4
PUT
State Street SPDR S&P 500 ETF Trust
SPY
$816B
| $811M | 2.7% |
1,246,800
+346,600
| +39% | +$251M |
2020 Q2
24 quarters
|
|
5
Microsoft
MSFT
$3.94T
| $763M | 2.54% |
2,045,038
-330,469
| -14% | -$134M |
2013 Q2
52 quarters
|
|
|
6
Alphabet (Google) Class A
GOOGL
$3.49T
| $722M | 2.4% |
2,019,467
-538,746
| -21% | -$194M |
2015 Q4
42 quarters
|
|
7
Amazon
AMZN
$2.63T
| $713M | 2.37% |
2,991,600
-414,260
| -12% | -$104M |
2013 Q2
52 quarters
|
|
|
8
CALL
State Street SPDR S&P 500 ETF Trust
SPY
$816B
| $555M | 1.85% |
853,300
+44,500
| +6% | +$32.3M |
2024 Q2
8 quarters
|
|
9
Broadcom
AVGO
$1.65T
| $519M | 1.73% |
1,374,612
-277,808
| -17% | -$111M |
2013 Q4
50 quarters
|
|
10
Meta Platforms (Facebook)
META
$1.63T
| $370M | 1.23% |
657,623
-73,279
| -10% | -$44.8M |
2013 Q2
52 quarters
|
|
11
Micron Technology
MU
$1.06T
| $362M | 1.2% |
313,454
-8,752
| -3% | -$6.56M |
2013 Q4
50 quarters
|
|
12
Eli Lilly
LLY
$1.22T
| $339M | 1.13% |
283,001
-25,496
| -8% | -$26.1M |
2013 Q2
52 quarters
|
|
13
Alphabet (Google) Class C
GOOG
$3.47T
| $321M | 1.07% |
907,212
-94,659
| -9% | -$33.8M |
2015 Q4
42 quarters
|
|
14
Advanced Micro Devices
AMD
$925B
| $314M | 1.04% |
540,770
+62,842
| +13% | +$25.8M |
2018 Q3
31 quarters
|
|
15
Tesla
TSLA
$1.59T
| $314M | 1.04% |
746,440
-95,010
| -11% | -$37.8M |
2020 Q1
25 quarters
|
|
|
16
Alphabet Inc Depositary Shares Series A Preferred Stock
GOOGM
| $237M | 0.79% |
+4,662,875
| New | +$234M |
2026 Q2
0 quarters
|
|
|
17
Alphabet Inc Depositary Shares Series B Preferred Stock
GOOGN
| $232M | 0.77% |
+4,615,868
| New | +$231M |
2026 Q2
0 quarters
|
|
18
JPMorgan Chase
JPM
$912B
| $232M | 0.77% |
708,384
-96,552
| -12% | -$30M |
2013 Q2
52 quarters
|
|
19
Visa
V
$767B
| $227M | 0.75% |
661,467
-100,426
| -13% | -$32.2M |
2013 Q2
52 quarters
|
|
20
Applied Materials
AMAT
$335B
| $219M | 0.73% |
303,395
-3,695
| -1% | -$1.7M |
2013 Q2
52 quarters
|
|
21
PUT
Invesco QQQ Trust
QQQ
$483B
| $197M | 0.66% |
341,600
-191,200
| -36% | -$132M |
2023 Q1
13 quarters
|
|
22
Boeing Co 6.00% Series A Preferred Stock
BA.PRA
$6.28B
| $185M | 0.62% |
2,754,965
-108,127
| -4% | -$7.61M |
2024 Q4
6 quarters
|
|
23
Hewlett Packard Enterprise 7.625% Series C Preferred Stock
HPE.PRC
$4.52B
| $184M | 0.61% |
1,586,652
+194,148
| +14% | +$18.4M |
2024 Q3
7 quarters
|
|
24
Oracle Corp Preferred Stock Series D
ORCL.PRD
| $179M | 0.59% |
3,976,804
-106,666
| -3% | -$5.73M |
2026 Q1
1 quarter
|
|
25
Intel
INTC
$487B
| $177M | 0.59% |
1,268,305
+293,357
| +30% | +$29.7M |
2013 Q2
52 quarters
|
|
Similar funds
Calamos Advisors's Q2 2026 Portfolio in Review
As of Q2 2026, Calamos Advisors held 1,336 positions worth $30.1B, up 6.5% from $28.2B the previous quarter. Its ten largest holdings account for 28% of the portfolio.
Calamos Advisors withdrew a net $6.55B in Q2 2026, closing 356 positions and reducing 386 holdings. Its most notable exit was iShares Russell 3000 ETF, an estimated $57.1M position sold in full.
By sector, the portfolio is most concentrated in Miscellaneous at 39% of assets, up from 38% a quarter earlier, followed by Technology and Communication Services.
Against the trend, Calamos Advisors opened a new position in Calamos Tax-Aware Collateral ETF worth $1.08B.
- Calamos Advisors's largest Q2 2026 buy was Calamos Tax-Aware Collateral ETF: 10,693,254 shares worth $1.08B.
- Calamos Advisors added most to Intel in Q2 2026, an estimated $29.7M increase.
- Calamos Advisors's biggest Q2 2026 reduction was State Street SPDR S&P 500 ETF Trust, cutting an estimated $502M.
- Calamos Advisors fully exited iShares Russell 3000 ETF in Q2 2026, selling an estimated $57.1M.
- Calamos Advisors's ten largest holdings make up 28% of its $30.1B portfolio in Q2 2026.
- Calamos Advisors opened 131 new positions and closed 356 in Q2 2026.
- Calamos Advisors's portfolio value rose 6.5% quarter-over-quarter to $30.1B.
Based on Calamos Advisors's 13F filing for Q2 2026, filed 31 Jul 2026.