Calamos Advisors Llc
Institutional manager — quarterly 13F holdings, Q ending 2026-06-30
Reported value
$30.07B
Q ending 2026-06-30
Prior quarter
$28.22B
Q ending 2026-03-31
Change
+6.5% QoQ · +18.4% YoY
Positions
980
reported holdings
Largest positions
Top 100 of 980 reported positions by value, Q ending 2026-06-30. A manager can hold shares, calls and puts on the same security at once — such positions are listed as separate rows. Type: Shares = common stock, Put/Call = option positions (valued at the underlying), Principal = debt. Tickers link to stock pages where covered.
| Holding | Ticker | Type | Value ▼ | Shares |
|---|---|---|---|---|
| Nvidia Corporation | NVDA | Shares | $1.41B | 7.1M |
| Apple Inc | AAPL | Shares | $1.14B | 3.9M |
| Calamos Etf Tr | CBOX | Shares | $1.08B | 10.7M |
| Western Digital Corp | WDC 3 11/15/28 | Principal | $825.1M | 48.7M |
| State Str Spdr S&P 500 Etf T | SPY | Put | $810.8M | 1.2M |
| Microsoft Corp | MSFT | Shares | $762.8M | 2.0M |
| Alphabet Inc | GOOGL | Shares | $721.7M | 2.0M |
| Amazon Com Inc | AMZN | Shares | $713.0M | 3.0M |
| State Str Spdr S&P 500 Etf T | SPY | Call | $554.9M | 853K |
| Broadcom Inc | AVGO | Shares | $519.3M | 1.4M |
| Meta Platforms Inc | META | Shares | $370.4M | 658K |
| Micron Technology Inc | MU | Shares | $361.8M | 313K |
| Eli Lilly & Co | LLY | Shares | $339.4M | 283K |
| Alphabet Inc | GOOG | Shares | $320.5M | 907K |
| Advanced Micro Devices Inc | AMD | Shares | $314.1M | 541K |
| Tesla Inc | TSLA | Shares | $314.0M | 746K |
| Alphabet Inc | GOOGL 6.25 05/15/29 A | Shares | $237.3M | 4.7M |
| Alphabet Inc | GOOGL 6.25 05/15/29 B | Shares | $232.2M | 4.6M |
| Jpmorgan Chase & Co | JPM | Shares | $231.9M | 708K |
| Visa Inc | V | Shares | $226.9M | 661K |
| Alibaba Group Hldg Ltd | BABA 0.5 06/01/31 | Principal | $223.2M | 189.0M |
| Applied Matls Inc | AMAT | Shares | $219.4M | 303K |
| Invesco Qqq Tr | QQQ | Put | $197.2M | 342K |
| Boeing Co | BA 6 10/15/27 | Shares | $185.4M | 2.8M |
| Hewlett Packard Enterprise C | HPE 7.625 09/01/27 | Shares | $183.5M | 1.6M |
| Oracle Corp | ORCL 6.5 01/15/29 D | Shares | $178.8M | 4.0M |
| Intel Corp | INTC | Shares | $177.1M | 1.3M |
| Ishares Tr | EFA | Call | $168.0M | 1.7M |
| Goldman Sachs Group Inc | GS | Shares | $167.6M | 166K |
| Johnson & Johnson | JNJ | Shares | $164.4M | 647K |
| Caterpillar Inc | CAT | Shares | $160.0M | 150K |
| Lam Research Corp | LRCX | Shares | $158.4M | 365K |
| Exxon Mobil Corp | XOM | Shares | $155.3M | 1.1M |
| Walmart Inc | WMT | Shares | $154.4M | 1.4M |
| Mks Inc. | MKSI 1.25 06/01/30 | Principal | $149.9M | 50.8M |
| Snowflake Inc | SNOW 0 10/01/29 | Principal | $148.4M | 84.0M |
| On Semiconductor Corp | ON 0.5 03/01/29 | Principal | $147.7M | 122.3M |
| Ge Vernova Inc | GEV | Shares | $145.3M | 124K |
| Cisco Sys Inc | CSCO | Shares | $138.5M | 1.2M |
| Unitedhealth Group Inc | UNH | Shares | $128.6M | 309K |
| Doordash Inc | DASH 0 05/15/30 | Principal | $126.4M | 128.6M |
| Berkshire Hathaway Inc Del | BRK/B | Shares | $126.3M | 252K |
| Bank Of Amer Corp | BAC | Shares | $125.8M | 2.2M |
| Mastercard Incorporated | MA | Shares | $122.7M | 239K |
| Cloudflare Inc | NET 0 06/15/30 | Principal | $121.0M | 95.4M |
| Cyberark Software Ltd | CYBR 0 06/15/30 | Principal | $120.7M | 72.4M |
| Akamai Technologies Inc | AKAM 0.25 05/15/33 | Principal | $114.3M | 78.2M |
| Wells Fargo & Co | WFC | Shares | $112.9M | 1.4M |
| Microchip Technology Inc. | MCHP 7.5 03/15/28 | Shares | $111.9M | 1.5M |
| Ppl Corp | PPL 7 02/15/29 | Shares | $109.7M | 2.2M |
| Rivian Automotive Inc | RIVN 4.625 03/15/29 | Principal | $108.6M | 91.6M |
| Uber Technologies Inc | UBER 0.875 12/01/28 2028 | Principal | $107.3M | 89.4M |
| Linde Plc | Shares | $107.2M | 207K | |
| Philip Morris Intl Inc | PM | Shares | $105.3M | 582K |
| Southern Co | SO 7.125 12/15/28 A | Shares | $105.2M | 2.1M |
| Ishares Tr | IWM | Call | $104.8M | 422K |
| Ge Aerospace | GE | Shares | $103.6M | 277K |
| Datadog Inc | DDOG 0 12/01/29 | Principal | $103.3M | 72.7M |
| Citigroup Inc | C | Shares | $102.9M | 735K |
| Nextera Energy Inc | NEE 7.375 02/15/29 | Shares | $101.9M | 2.1M |
| Abbvie Inc | ABBV | Shares | $100.6M | 400K |
| Netflix Inc. | NFLX | Shares | $98.7M | 1.4M |
| Ishares Tr | IWM | Put | $94.9M | 383K |
| Home Depot Inc | HD | Shares | $93.1M | 264K |
| Morgan Stanley | MS | Shares | $92.5M | 442K |
| Chevron Corporation | CVX | Shares | $92.1M | 556K |
| Rtx Corporation | RTX | Shares | $91.0M | 480K |
| Invesco Qqq Tr | QQQ | Call | $89.5M | 155K |
| Evergy Inc | EVRG 4.5 12/15/27 | Principal | $87.8M | 61.6M |
| Cms Energy Corp | CMS 3.375 05/01/28 | Principal | $85.9M | 76.8M |
| Etsy Inc | ETSY 1 06/15/30 | Principal | $85.2M | 73.2M |
| Akamai Technologies Inc | AKAM 1.125 02/15/29 | Principal | $84.2M | 70.6M |
| Palo Alto Networks Inc | PANW | Shares | $83.7M | 245K |
| Merck & Co Inc | MRK | Shares | $83.6M | 651K |
| Seagate Hdd Cayman | STX 3.5 06/01/28 | Principal | $81.2M | 6.9M |
| Csx Corp | CSX | Shares | $80.4M | 1.7M |
| Quanta Svcs Inc | PWR | Shares | $80.1M | 111K |
| Super Micro Computer Inc | SMCI 7 06/01/29 | Shares | $78.7M | 1.5M |
| Coca Cola Co | KO | Shares | $78.5M | 966K |
| Sandisk Corp | SNDK | Shares | $77.8M | 34K |
| Palantir Technologies Inc | PLTR | Shares | $77.5M | 664K |
| Norfolk Southn Corp | NSC | Shares | $76.1M | 242K |
| Costco Wholesale Corporation | COST | Shares | $75.2M | 80K |
| Apollo Global Mgmt Inc | APO 6.75 07/31/26 | Shares | $75.0M | 1.2M |
| Jazz Investments I Ltd | JAZZ 3.125 09/15/30 | Principal | $74.5M | 43.7M |
| Marathon Pete Corp | MPC | Shares | $74.4M | 291K |
| Southern Co | SO 3.25 06/15/28 | Principal | $71.2M | 70.4M |
| Kkr & Co Inc | KKR 6.25 03/01/28 D | Shares | $71.0M | 1.8M |
| Ishares Tr | EFA | Put | $70.6M | 727K |
| Procter & Gamble Co | PG | Shares | $70.0M | 477K |
| Union Pac Corp | UNP | Shares | $69.3M | 255K |
| Brightspring Health Svcs Inc | BTSG 6.75 02/01/27 | Shares | $69.1M | 302K |
| Ppl Cap Fdg Inc | PPL 2.875 03/15/28 | Principal | $68.7M | 60.5M |
| Albemarle Corp | ALB 7.25 03/01/27 | Shares | $68.7M | 1.2M |
| Ishares Tr | EEM | Put | $68.3M | 1.2M |
| Live Nation Entertainment In | LYV 2.875 01/15/30 | Principal | $67.6M | 56.4M |
| American Express Co | AXP | Shares | $66.9M | 198K |
| Rivian Automotive Inc | RIVN 3.625 10/15/30 | Principal | $66.5M | 62.0M |
| Sea Ltd | SEALTD 0.25 09/15/26 | Principal | $66.0M | 66.6M |
| Amphenol Corp | APH | Shares | $65.2M | 370K |
Values as reported in public regulatory filings (USD); holdings are reported quarterly, up to 45 days after quarter end, and may contain reporting errors. Nothing here is investment advice.