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Calamos Advisors LLC

SEC CIK
0001316507
Latest filing
Jul 31, 2026

Holdings in Q4 2023

Holdings as of Dec 31, 2023, filed Jan 31, 2024. Long positions only; changes compare share counts with Q3 2023.

Institution overview
Positions
884
−15 vs. Q3 2023
Portfolio value
$19.5B
+$1.13B (+6.1%) vs. Q3 2023
Filed
Jan 31, 2024
SEC
Holdings of Calamos Advisors LLC in Q4 2023
SecurityClassSharesValue% of portfolioShare changeActionHistory
MSFTMicrosoft CorpStock2,569,757$966.3M4.9%−29,669−1.1%ReducedHistory
AAPLApple Inc.Stock4,620,372$889.6M4.6%−46,573−1.0%ReducedHistory
AMZNAmazon Com IncStock3,386,166$514.5M2.6%−56,013−1.6%ReducedHistory
NVDANVIDIA CorpStock890,380$440.9M2.3%−6,321−0.7%ReducedHistory
GOOGLAlphabet Inc.Stock2,734,757$382.0M2.0%−23,695−0.9%ReducedHistory
Palo Alto Networks Inc697435AF2NOTE 0.375% 6/0–$362.0M1.9%–––
METAMeta Platforms, Inc.Stock709,854$251.3M1.3%−925−0.1%ReducedHistory
LLYEli Lilly & CoStock373,844$217.9M1.1%−2,892−0.8%ReducedHistory
Pioneer Nat Res Co723787AP2NOTE 0.250% 5/1–$202.9M1.0%–––
UNHUnitedHealth Group IncStock381,601$200.9M1.0%−9,048−2.3%ReducedHistory
VVisa Inc.Stock768,344$200.0M1.0%−68,371−8.2%ReducedHistory
GOOGAlphabet Inc.Stock1,354,309$190.9M1.0%−15,161−1.1%ReducedHistory
TSLATesla, Inc.Stock674,959$167.7M0.9%+267,946+65.8%AddedHistory
AVGOBroadcom Inc.Stock138,004$154.0M0.8%−8,024−5.5%ReducedHistory
MongoDB, Inc.60937PAD8NOTE 0.250% 1/1–$142.5M0.7%–––
JPMJPMorgan Chase & CoStock775,446$131.9M0.7%−5,462−0.7%ReducedHistory
Airbnb, Inc.009066AB7NOTE 3/1–$124.0M0.6%–––
MAMastercard IncStock281,852$120.2M0.6%−1,832−0.6%ReducedHistory
On Semiconductor Corp682189AS4NOTE 5/0–$119.3M0.6%–––
Akamai Technologies Inc00971TAL5NOTE 0.375% 9/0–$113.9M0.6%–––
Royal Caribbean Group780153BQ4NOTE 6.000% 8/1–$111.1M0.6%–––
Unity Software Inc.91332UAB7NOTE 11/1–$107.0M0.5%–––
BACBank of America CorpStock3,094,403$104.2M0.5%−30,507−1.0%ReducedHistory
BRK.BBerkshire Hathaway IncStock287,962$102.7M0.5%−3,761−1.3%ReducedHistory
MRKMerck & Co., Inc.Stock941,273$102.6M0.5%−29,334−3.0%ReducedHistory
Sea Ltd81141RAG5NOTE 0.250% 9/1–$101.3M0.5%–––
JNJJohnson & JohnsonStock642,688$100.7M0.5%−3,843−0.6%ReducedHistory
LINLinde PLCStock244,347$100.4M0.5%−43,492−15.1%ReducedHistory
DraftKings Inc.26142RAB0NOTE 3/1–$100.3M0.5%–––
Ford MTR Co Del345370CZ1NOTE 3/1–$94.8M0.5%–––
HDHome Depot, Inc.Stock269,719$93.5M0.5%−2,291−0.8%ReducedHistory
WFCWells Fargo & CompanyStock1,885,052$92.8M0.5%+75,730+4.2%AddedHistory
WMTWalmart Inc.Stock568,010$89.5M0.5%−1,546−0.3%ReducedHistory
Cyberark Software Ltd23248VAB1NOTE 11/1–$89.3M0.5%–––
Apollo Global Mgmt Inc03769M304SER A MAND CNV1,556,884$87.8M0.4%−3,945−0.3%Reduced–
ORCLOracle CorpStock825,357$87.0M0.4%−55,136−6.3%ReducedHistory
AMDAdvanced Micro Devices IncStock585,971$86.4M0.4%−101,395−14.8%ReducedHistory
PGProcter & Gamble CoStock583,495$85.5M0.4%−3,658−0.6%ReducedHistory
HONHoneywell International IncCOM405,821$85.1M0.4%+6,385+1.6%AddedHistory
Wayfair Inc.94419LAP6NOTE 3.250% 9/1–$85.0M0.4%–––
CVXChevron CorpStock561,653$83.8M0.4%−108,707−16.2%ReducedHistory
Snap Inc83304AAF3NOTE 5/0–$83.5M0.4%–––
HESHess CorpStock577,500$83.3M0.4%+290,245+101.0%AddedHistory
PXDPioneer Natural Resources CoCOM363,746$81.8M0.4%+224,753+161.7%AddedHistory
XOMExxonMobil Holdings CorpCOM814,495$81.4M0.4%−4,448−0.5%ReducedHistory
CSXCSX CorpStock2,304,312$79.9M0.4%−73,319−3.1%ReducedHistory
ADBEAdobe Inc.Stock133,296$79.5M0.4%+5,967+4.7%AddedHistory
Uber Technologies, Inc90353TAJ9NOTE 12/1–$78.0M0.4%–––
Confluent, Inc.20717MAB9NOTE 1/1–$77.9M0.4%–––
Akamai Technologies Inc00971TAJ0NOTE 0.125% 5/0–$76.6M0.4%–––
DHRDanaher CorpStock329,902$76.3M0.4%+87,658+36.2%AddedHistory
TMOThermo Fisher Scientific Inc.Stock143,623$76.2M0.4%−23,327−14.0%ReducedHistory
Dexcom Inc252131AK3NOTE 0.250%11/1–$75.0M0.4%–––
CRMSalesforce, Inc.Stock282,483$74.3M0.4%−2,487−0.9%ReducedHistory
NOWServiceNow, Inc.Stock105,121$74.3M0.4%−375−0.4%ReducedHistory
COSTCostco Wholesale CorpStock112,269$74.1M0.4%−1,391−1.2%ReducedHistory
Datadog, Inc.23804LAB9NOTE 0.125% 6/1–$74.0M0.4%–––
NFLXNetflix IncStock150,982$73.5M0.4%−14,535−8.8%ReducedHistory
ABBVAbbVie Inc.Stock468,468$72.6M0.4%−3,918−0.8%ReducedHistory
SHIFT4 PMTS Inc82452JAB5NOTE 12/1–$70.1M0.4%–––
MSMorgan StanleyStock741,520$69.1M0.4%−9,196−1.2%ReducedHistory
LOWLowes Companies IncStock310,564$69.1M0.4%+11,379+3.8%AddedHistory
Tesla, Inc.88160RAG6NOTE 2.000% 5/1–$68.0M0.3%–––
Square Inc852234AF0NOTE 0.125% 3/0–$67.7M0.3%–––
UNPUnion Pacific CorpStock275,216$67.6M0.3%+10,936+4.1%AddedHistory
KOCoca Cola CoStock1,127,992$66.5M0.3%−144,585−11.4%ReducedHistory
Spotify USA Inc84921RAB6NOTE 3/1–$66.3M0.3%–––
NKENIKE, Inc.Stock604,858$65.7M0.3%+38,999+6.9%AddedHistory
Bill Com Hldgs Inc090043AB6NOTE 12/0–$65.3M0.3%–––
Digitalocean Hldgs Inc25402DAB8NOTE 12/0–$65.3M0.3%–––
INTUIntuit Inc.Stock103,699$64.8M0.3%−917−0.9%ReducedHistory
BSXBoston Scientific CorpStock1,120,564$64.8M0.3%−4,939−0.4%ReducedHistory
CSCOCisco Systems, Inc.Stock1,270,904$64.2M0.3%−13,555−1.1%ReducedHistory
Jazz Investments I Ltd472145AF8NOTE 2.000% 6/1–$63.2M0.3%–––
NCL Corp Ltd62886HBD2NOTE 1.125% 2/1–$63.1M0.3%–––
TMUST-Mobile US, Inc.Stock379,640$60.9M0.3%−1,518−0.4%ReducedHistory
Sarepta Therapeutics, Inc.803607AD2NOTE 1.250% 9/1–$60.4M0.3%–––
MCDMcDonalds CorpStock201,589$59.8M0.3%−1,406−0.7%ReducedHistory
ACNAccenture plcStock169,166$59.4M0.3%−21,401−11.2%ReducedHistory
Halozyme Therapeutics, Inc.40637HAF6NOTE 1.000% 8/1–$59.3M0.3%–––
CONMED Corp207410AH4NOTE 2.250% 6/1–$58.1M0.3%–––
Splunk Inc848637AD6NOTE 1.125% 9/1–$57.8M0.3%–––
MIDDLEBY Corp596278AB7NOTE 1.000% 9/0–$57.7M0.3%–––
CMCSAComcast CorpStock1,310,683$57.5M0.3%−9,004−0.7%ReducedHistory
Alnylam Pharmaceuticals, Inc.02043QAB3NOTE 1.000% 9/1–$55.9M0.3%–––
Booking Holdings Inc.09857LAN8NOTE 0.750% 5/0–$55.8M0.3%–––
GSGoldman Sachs Group IncStock144,032$55.6M0.3%−1,335−0.9%ReducedHistory
MPCMarathon Petroleum CorpStock372,944$55.3M0.3%−3,218−0.9%ReducedHistory
John Bean Technologies Corp477839AB0NOTE 0.250% 5/1–$55.2M0.3%–––
Cloudflare, Inc.18915MAC1NOTE 8/1–$54.6M0.3%–––
AXPAmerican Express CoStock291,425$54.6M0.3%−32,541−10.0%ReducedHistory
MRSHMarsh & McLennan Companies, Inc.Stock286,490$54.3M0.3%−745−0.3%ReducedHistory
PMPhilip Morris International Inc.Stock565,777$53.2M0.3%−3,725−0.7%ReducedHistory
DISWalt Disney CoStock588,408$53.1M0.3%−4,608−0.8%ReducedHistory
PEPPepsiCo IncStock305,749$51.9M0.3%−15,304−4.8%ReducedHistory
Blackline, Inc.09239BAD1NOTE 3/1–$51.9M0.3%–––
Fastly, Inc.31188VAB6NOTE 3/1–$51.0M0.3%–––
DISH Network CORP25470MAF6NOTE 12/1–$50.9M0.3%–––
AIGAmerican International Group, Inc.Stock741,431$50.2M0.3%−4,292−0.6%ReducedHistory
Nextera Energy Inc65339F713UNIT 09/01/20251,299,914$49.6M0.3%−53,977−4.0%Reduced–

Options (35)

Puts and calls in the same filing. Amounts are the market value of the underlying shares, which is what 13F reports.

Option positions of Calamos Advisors LLC in Q4 2023
SecurityClassPutsCalls
Invesco QQQ Trust Series I46090E103ETF$457.0M–
SPYSPDR S&P 500 ETF TrustETF$110.7M$86.8M
iShares Tr46428743220 YR TR BD ETF$42.6M$42.6M
iShares MSCI India ETF46429B598ETF$65.4M–
iShares Russell 2000 ETF464287655ETF–$47.7M
FLYYSpirit Aviation Holdings, Inc.COM$25.4M–
GOOGLAlphabet Inc.Stock$7.26M$14.5M
NVDANVIDIA CorpStock$9.87M$9.87M
LVSLas Vegas Sands CorpCOM–$18.8M
BABAAlibaba Group Holding LtdADR–$16.6M
MSFTMicrosoft CorpStock–$13.2M
AMZNAmazon Com IncStock–$12.0M
iShares MSCI Eafe ETF464287465ETF–$9.64M
AAPLApple Inc.Stock–$8.56M
MMYTMakeMyTrip LtdStock–$8.35M
NENoble Corp plcORD SHS A–$8.24M
iShares Inc464286772MSCI STH KOR ETF–$8.16M
UBERUber Technologies, IncStock–$6.71M
BACBank of America CorpStock–$6.41M
TSMTaiwan Semiconductor Manufacturing Co LtdADR–$5.39M
BYNDBeyond Meat, Inc.COM$5.29M–
TMToyota Motor CorpADS–$3.92M
ASMLASML Holding NVADR–$3.53M
EDUNew Oriental Education & Technology Group Inc.SPON ADR–$3.02M
DISHDISH Network CORPCL A$2.93M–
Global X FDS37950E259GB MSCI AR ETF–$2.89M
PDDPDD Holdings Inc.SPONSORED ADS–$2.83M
PBRPetrobras - Petroleo Brasileiro SASPONSORED ADR–$2.83M
INMDInMode Ltd.SHS–$2.00M
TCOMTrip.com Group LtdADS–$1.80M
CXCemex SAB de CVSPON ADR NEW–$1.37M
iShares Tr46429B614MSCI INDIA SM CP$864.7K–
IRBTiRobot CorpCOM–$773.2K
BEKEKE Holdings Inc.SPONSORED ADS–$760.5K
ProShares Tr74347X831ULTRAPRO QQQ$327.7K–

Sold out since Q3 2023 (119)

Positions held at the end of Q3 2023 that are gone from this filing.

The largest 100 of 119 by value last quarter.

Positions of Calamos Advisors LLC sold out since Q3 2023
SecurityClassShares in Q3 2023Value in Q3 2023% of portfolio in Q3 2023History
Dexcom Inc252131AH0NOTE 0.750%12/0–$67.9M0.4%–
Teradyne, Inc880770AG7NOTE 1.250%12/1–$47.8M0.3%–
AES Corp00130H204UNIT 99/99/9999741,033$45.2M0.2%–
ATVIActivision Blizzard, Inc.COM417,229$39.1M0.2%History
Carnival Corp143658BT8NOTE 5.750%10/0–$33.8M0.2%–
Western Digital Corp958102AP0NOTE 1.500% 2/0–$27.6M0.1%–
DENDenbury IncCOM265,179$26.0M0.1%History
SGENSeagen Inc.COM119,000$25.2M0.1%History
VMWVmware LLCCL A COM143,016$23.8M0.1%History
Pinduoduo Inc722304AC6NOTE 12/0–$22.7M0.1%–
Abcam PLC000380204ADS873,713$19.8M0.1%–
NATINational Instruments CorpCOM276,662$16.5M0.1%History
IVCBInvest Acquisition CorpCLASS A ORD SHS1,500,000$16.3M0.1%History
World Wrestling Entmt Inc98156QAB4NOTE 3.375%12/1–$14.0M0.1%–
NFYSEnphys Acquisition Corp.CL A ORD SHS1,250,000$13.1M0.1%History
Farfetch Ltd30744WAD9NOTE 3.750% 5/0–$12.5M0.1%–
Chegg, Inc163092AD1NOTE 0.125% 3/1–$12.1M0.1%–
HZNPHorizon Therapeutics Public Ltd CoSHS100,000$11.6M0.1%History
PRLHPearl Holdings Acquisition CorpCLASS A ORD SHS1,000,000$10.7M0.1%History
OKLOOklo Inc.COM CL A1,000,000$10.3M0.1%History
PNCPNC Financial Services Group, Inc.Stock73,683$9.05M<0.1%History
SDCL EDGE Acquisition CorpG79471101CL A ORD SHS800,000$8.48M<0.1%–
Forbion European Acqustn CorG3619H102CLASS A ORD SHS750,000$8.24M<0.1%–
Smart Global Hldgs Inc83205YAB0NOTE 2.250% 2/1–$6.62M<0.1%–
Sunnova Energy Intl Inc.86745KAF1NOTE 0.250%12/0–$6.46M<0.1%–
CDAQCompass Digital Acquisition Corp.CLASS A ORD500,000$5.25M<0.1%History
NEWRNew Relic, Inc.COM60,000$5.14M<0.1%History
Tabula Rasa HealthCare, Inc.873379AA9NOTE 1.750% 2/1–$4.91M<0.1%–
Intercept Pharmaceuticals IN45845PAB4NOTE 2.000% 5/1–$4.90M<0.1%–
Sunrun Inc.86771WAB1NOTE 2/0–$4.78M<0.1%–
RELYRemitly Global, Inc.COM186,410$4.70M<0.1%History
IBNIcici Bank LtdADR199,047$4.60M<0.1%History
ECHOEchoStar CORPCL A205,075$3.44M<0.1%History
SEDGSolaredge Technologies, Inc.COM26,100$3.38M<0.1%History
RCELAVITA Medical, Inc.COM210,796$3.08M<0.1%History
KEXKirby CorpCOM35,164$2.91M<0.1%History
Pono Cap Three IncG71704129UNIT 01/11/2028255,000$2.71M<0.1%–
MNDYmonday.com Ltd.SHS15,035$2.39M<0.1%History
ACLSAxcelis Technologies IncStock14,274$2.33M<0.1%History
Opy Acquisition Corp. I671005106COM CL A218,489$2.30M<0.1%–
NENoble Corp plcORD SHS A40,054$2.03M<0.1%History
PENGPenguin Solutions, Inc.SHS76,376$1.86M<0.1%History
EXTRExtreme Networks IncCOM74,806$1.81M<0.1%History
FLYWFlywire CorpCOM VTG55,303$1.76M<0.1%History
CAMTCamtek LtdORD27,870$1.74M<0.1%History
BELFBBel Fuse IncCL B27,211$1.30M<0.1%History
SITESiteOne Landscape Supply, Inc.COM7,885$1.29M<0.1%History
SYMSymbotic Inc.Stock38,288$1.28M<0.1%History
MTDRMatador Resources CoCOM21,429$1.27M<0.1%History
Air Transport Services Grp I00922RAB1NOTE 1.125%10/1–$1.22M<0.1%–
MYRGMyr Group Inc.COM9,032$1.22M<0.1%History
WKWorkiva IncCOM CL A10,837$1.10M<0.1%History
GXOGXO Logistics, Inc.Stock18,534$1.09M<0.1%History
OGNOrganon & Co.Stock51,781$898.9K<0.1%History
ATIAti IncStock20,743$853.6K<0.1%History
IXOrix CorpSPONSORED ADR9,083$852.7K<0.1%History
HUBSHubSpot IncCOM1,646$810.7K<0.1%History
ALTRAltair Engineering Inc.COM CL A11,672$730.2K<0.1%History
HQYHealthequity, Inc.COM9,742$711.7K<0.1%History
STVNStevanato Group S.p.A.ORD SHS20,512$609.6K<0.1%History
CXMSprinklr, Inc.CL A43,128$596.9K<0.1%History
SUMSummit Materials, Inc.CL A17,736$552.3K<0.1%History
AIPArteris, Inc.COM84,164$547.9K<0.1%History
HXLHexcel CorpCOM8,038$523.6K<0.1%History
PENPenumbra IncCOM1,927$466.2K<0.1%History
GLBEGlobal-E Online Ltd.SHS10,743$426.9K<0.1%History
NVMINova Ltd.COM3,542$398.3K<0.1%History
APPAppLovin CorpCOM CL A9,427$376.7K<0.1%History
KRTKarat Packaging Inc.COM15,222$351.0K<0.1%History
INODInnodata IncCOM NEW33,977$289.8K<0.1%History
CALXCalix, IncCOM6,149$281.9K<0.1%History
BOOTBoot Barn Holdings, Inc.COM3,054$248.0K<0.1%History
ENSEnerSysCOM2,458$232.7K<0.1%History
RGFReal Good Food Company, Inc.COM CL A68,509$229.5K<0.1%History
Forbion European Acqustn CorG3619H110*W EXP 12/10/202250,000$137.5K<0.1%–
On Semiconductor Corp682189AP0NOTE 1.625%10/1–$112.1K<0.1%–
Byte Acquisition CorpG1R25Q113*W EXP 03/18/202250,000$56.1K<0.1%–
Athena Consumer Acq Corp04684M114*W EXP 07/31/202150,000$54.0K<0.1%–
Healthwell Acquisition Corp42227R117*W EXP 08/05/202256,033$52.5K<0.1%–
Nabors Energy Transition Cor629567116*W EXP 11/17/202200,000$34.0K<0.1%–
KnightSwan Acquisition Corp499103117*W EXP 99/99/999500,000$32.8K<0.1%–
Infinite Acquisition Corp.G48028123*W EXP 11/23/202750,000$30.0K<0.1%–
BioPlus Acquisition Corp.G11217125*W EXP 12/02/202500,000$28.0K<0.1%–
Mercato Partners Acquisition Corp58759A116*W EXP 99/99/999125,000$26.3K<0.1%–
Shoulderup Technology Acquis82537G112*W EXP 11/17/2021,000,000$25.0K<0.1%–
Perception Capital Corp IIG7007D110*W EXP 10/25/202192,245$19.3K<0.1%–
Shuaa Partners Acquistn CorpG81173117*W EXP 02/24/202250,000$16.9K<0.1%–
Infint Acquisition CorpG47862126*W EXP 99/99/999438,223$16.5K<0.1%–
Alsp Orchid Acquisition CorpG0231L123*W EXP 11/30/202500,000$15.1K<0.1%–
Accretion Acquisition Corp00438Y123RIGHT 03/01/2028160,000$13.9K<0.1%–
Ares Acquisition CorporationG33032122*W EXP 99/99/99920,000$13.7K<0.1%–
Industrial Tech Acqstns II I45635R116*W EXP 03/31/202375,000$13.1K<0.1%–
Eg Acquisition Corp26846A118*W EXP 05/28/20275,000$12.8K<0.1%–
Acropolis Infrastructure Acq005029111*W EXP 03/30/202205,467$12.3K<0.1%–
Omnilit Acquisition Corp68218C116*W EXP 11/08/202250,000$11.3K<0.1%–
Liv Capital Acquisitn Corp IG5510R113*W EXP 02/07/202375,000$11.1K<0.1%–
Innovative Intl Acqusitin CoG4809M125*W EXP 07/01/202200,000$10.8K<0.1%–
Worldwide Webb Acquisition CG97775111*W EXP 10/20/202289,507$10.5K<0.1%–
Disruptive Acquisition CorpG2770Y128*W EXP 03/06/202166,666$9.14K<0.1%–
Anzu Special Acquisitin Corp03737A119*W EXP 01/27/202100,000$8.50K<0.1%–