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Calamos Advisors

Calamos Advisors Portfolio holdings

AUM $30.1B
1-Year Est. Return 30.03%
This Fund
S&P 500
This Quarter Est. Return
+19.33%
1 Year Est. Return
+30.03%
3 Year Est. Return
+88.6%
5 Year Est. Return
+115.14%
10 Year Est. Return
+349.12%
AUM
$30.1B
AUM Growth
+$1.84B
Cap. Flow
-$6.55B
Cap. Flow %
-21.8%
Top 10 Hldgs %
28.38%
Holding
1,336
New
131
Increased
151
Reduced
386
Closed
356

Top Buys

Rank Stock Value
1
CBOX
Calamos Tax-Aware Collateral ETF
CBOX
+$1.08B
2
GOOGM
Alphabet Inc Depositary Shares Series A Preferred Stock
GOOGM
+$234M
3
GOOGN
Alphabet Inc Depositary Shares Series B Preferred Stock
GOOGN
+$231M
4
SMCIP
Super Micro Computer Depositary Shares 7% Series A Preferred Stock
SMCIP
+$81.3M
5
ROKU icon
Roku
ROKU
+$39.6M

Top Sells

Rank Stock Value
1
SPY icon
State Street SPDR S&P 500 ETF Trust
SPY
+$502M
2
AAPL icon
Apple
AAPL
+$244M
3
NVDA icon
NVIDIA
NVDA
+$231M
4
GOOGL icon
Alphabet (Google) Class A
GOOGL
+$194M
5
IVV icon
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
PTGX icon
551
Protagonist Therapeutics
PTGX
$9.43B
$1.46M ﹤0.01%
11,931
-11,542
-49% -$1.21M
STM icon
552
STMicroelectronics
STM
$46.6B
$1.44M ﹤0.01%
+19,251
New +$1.16M
MIRM icon
553
Mirum Pharmaceuticals
MIRM
$6.15B
$1.41M ﹤0.01%
12,003
+3,468
+41% +$348K
COST icon
554
CALL
Costco
COST
$406B
$1.4M ﹤0.01%
1,400
-200
-13% -$199K
BACCU
555
Blue Acquisition Corp Unit
BACCU
$1.39M ﹤0.01%
123,189
– –
ETW
556
Eaton Vance Tax-Managed Global Buy-Write Opportunities Fund
ETW
$1.07B
$1.38M ﹤0.01%
143,639
+9,576
+7% +$89.5K
VO icon
557
Vanguard Morningstar Mid-Cap ETF
VO
$108B
$1.38M ﹤0.01%
17,156
-64,708
-79% -$5.02M
NIE
558
Virtus Equity & Convertible Income Fund
NIE
$722M
$1.38M ﹤0.01%
51,308
+3,420
+7% +$88.9K
COGT icon
559
Cogent Biosciences
COGT
$6.03B
$1.38M ﹤0.01%
+35,546
New +$1.24M
SOLV icon
560
Solventum
SOLV
$15.6B
$1.36M ﹤0.01%
17,566
-327
-2% -$23.8K
MMTXU
561
Miluna Acquisition Corp Units
MMTXU
$1.34M ﹤0.01%
125,000
– –
FEIM icon
562
Frequency Electronics
FEIM
$678M
$1.34M ﹤0.01%
20,214
+12,616
+166% +$777K
VT icon
563
Vanguard Total World Stock ETF
VT
$82.5B
$1.33M ﹤0.01%
+8,500
New +$1.3M
PCAP
564
ProCap Acquisition Corp
PCAP
$1.33M ﹤0.01%
128,835
– –
NATL icon
565
NCR Atleos
NATL
$3.41B
$1.32M ﹤0.01%
+30,500
New +$1.35M
CBTY
566
Calamos Bitcoin 80 Series Structured Alt Protection ETF - July
CBTY
$6.53M
$1.32M ﹤0.01%
67,504
+14,472
+27% +$286K
CBTO
567
Calamos Bitcoin 80 Series Structured Alt Protection ETF - October
CBTO
$25.8M
$1.32M ﹤0.01%
66,870
+17,235
+35% +$345K
LWACU
568
LightWave Acquisition Corp Units
LWACU
$1.31M ﹤0.01%
123,208
– –
AMPX icon
569
Amprius Technologies
AMPX
$1.44B
$1.31M ﹤0.01%
94,158
-270,348
-74% -$4.84M
NGS icon
570
Natural Gas Services Group
NGS
$469M
$1.3M ﹤0.01%
30,246
+4,200
+16% +$171K
ARCIU
571
Archimedes Tech SPAC Partners III Units
ARCIU
$214M
$1.29M ﹤0.01%
124,000
– –
CBTJ
572
Calamos Bitcoin 80 Series Structured Alt Protection ETF - January
CBTJ
$26M
$1.28M ﹤0.01%
74,312
+20,826
+39% +$400K
WT icon
573
WisdomTree
WT
$3.77B
$1.28M ﹤0.01%
75,415
+25,085
+50% +$444K
CBTA
574
Calamos Bitcoin 80 Series Structured Alt Protection ETF - April
CBTA
$7.09M
$1.27M ﹤0.01%
63,705
+35,048
+122% +$774K
OYSE
575
Oyster Enterprises II Acquisition Corp
OYSE
$1.27M ﹤0.01%
+123,093
New +$1.26M
21 22
23
24 25

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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.