Calamos Advisors Llc
Institutional manager — quarterly 13F holdings, Q ending 2026-03-31
Reported value
$28.22B
Q ending 2026-03-31
Prior quarter
$26.63B
Q ending 2025-12-31
Change
+6.0% QoQ · +22.9% YoY
Positions
1,196
reported holdings
Largest positions
Top 100 of 1,196 reported positions by value, Q ending 2026-03-31. 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 | $1.43B | 8.2M |
| Apple Inc | AAPL | Shares | $1.21B | 4.8M |
| Microsoft Corp | MSFT | Shares | $879.3M | 2.4M |
| Alphabet Inc | GOOGL | Shares | $735.6M | 2.6M |
| Amazon Com Inc | AMZN | Shares | $709.3M | 3.4M |
| State Str Spdr S&P 500 Etf T | SPY | Put | $613.9M | 900K |
| State Str Spdr S&P 500 Etf T | SPY | Call | $551.5M | 809K |
| Broadcom Inc | AVGO | Shares | $511.4M | 1.7M |
| State Str Spdr S&P 500 Etf T | SPY | Shares | $458.6M | 705K |
| Meta Platforms Inc | META | Shares | $418.2M | 731K |
| Western Digital Corp | WDC 3 11/15/28 | Principal | $398.9M | 55.6M |
| Invesco Qqq Tr | QQQ | Put | $327.3M | 533K |
| Tesla Inc | TSLA | Shares | $312.8M | 841K |
| Alphabet Inc | GOOG | Shares | $287.4M | 1.0M |
| Eli Lilly & Co | LLY | Shares | $283.7M | 308K |
| Alibaba Group Hldg Ltd | BABA 0.5 06/01/31 | Principal | $262.4M | 189.0M |
| Jpmorgan Chase & Co | JPM | Shares | $236.8M | 805K |
| Visa Inc | V | Shares | $230.3M | 762K |
| Exxon Mobil Corp | XOM | Shares | $217.5M | 1.3M |
| Walmart Inc | WMT | Shares | $194.8M | 1.6M |
| Johnson & Johnson | JNJ | Shares | $189.0M | 773K |
| Boeing Co | BA 6 10/15/27 | Shares | $185.8M | 2.9M |
| Oracle Corp | ORCL 6.5 01/15/29 D | Shares | $183.8M | 4.1M |
| Ishares Tr | IVV | Shares | $178.4M | 273K |
| Netflix Inc. | NFLX | Shares | $167.8M | 1.7M |
| Goldman Sachs Group Inc | GS | Shares | $144.6M | 171K |
| Chevron Corporation | CVX | Shares | $143.0M | 691K |
| Wells Fargo & Co | WFC | Shares | $133.9M | 1.7M |
| Ge Vernova Inc | GEV | Shares | $133.5M | 153K |
| Ishares Tr | IVW | Shares | $132.2M | 1.2M |
| Berkshire Hathaway Inc Del | BRK/B | Shares | $131.2M | 274K |
| Invesco Qqq Tr | QQQ | Call | $130.9M | 213K |
| Ishares Tr | IVE | Shares | $130.7M | 619K |
| Mks Inc. | MKSI 1.25 06/01/30 | Principal | $129.8M | 78.3M |
| Mastercard Incorporated | MA | Shares | $124.1M | 248K |
| Ishares Tr | IWM | Call | $117.1M | 476K |
| Lumentum Hldgs Inc | LITE 1.5 12/15/29 | Principal | $114.8M | 11.4M |
| Ppl Corp | PPL 7 02/15/29 | Shares | $114.7M | 2.2M |
| Ishares Tr | IWM | Put | $112.1M | 455K |
| Bank America Corp | BAC | Shares | $111.7M | 2.3M |
| Linde Plc | Shares | $111.7M | 225K | |
| Micron Technology Inc | MU | Shares | $108.9M | 322K |
| Uber Technologies Inc | UBER 0.875 12/01/28 2028 | Principal | $108.8M | 90.0M |
| Palantir Technologies Inc | PLTR | Shares | $108.5M | 742K |
| Home Depot Inc | HD | Shares | $107.9M | 328K |
| Nextera Energy Inc | NEE 7.375 02/15/29 | Shares | $107.1M | 2.1M |
| Southern Co | SO 7.125 12/15/28 A | Shares | $107.0M | 2.1M |
| Microchip Technology Inc. | MCHP 7.5 03/15/28 | Shares | $106.9M | 1.9M |
| Advanced Energy Inds | AEIS 2.5 09/15/28 | Principal | $105.8M | 44.1M |
| Abbvie Inc | ABBV | Shares | $105.2M | 484K |
| Applied Matls Inc | AMAT | Shares | $105.0M | 307K |
| On Semiconductor Corp | ON 0.5 03/01/29 | Principal | $104.4M | 106.2M |
| Wayfair Inc | W 3.5 11/15/28 | Principal | $102.8M | 58.7M |
| Rivian Automotive Inc | RIVN 4.625 03/15/29 | Principal | $98.5M | 92.0M |
| Philip Morris Intl Inc | PM | Shares | $98.0M | 593K |
| Advanced Micro Devices Inc | AMD | Shares | $97.2M | 478K |
| Rtx Corporation | RTX | Shares | $97.0M | 503K |
| Caterpillar Inc | CAT | Shares | $95.4M | 135K |
| Merck & Co Inc | MRK | Shares | $93.5M | 778K |
| Costco Wholesale Corporation | COST | Shares | $90.7M | 91K |
| Cisco Sys Inc | CSCO | Shares | $89.9M | 1.2M |
| Hewlett Packard Enterprise C | HPE 7.625 09/01/27 | Shares | $89.8M | 1.4M |
| Albemarle Corp | ALB 7.25 03/01/27 | Shares | $89.7M | 1.2M |
| Lam Research Corp | LRCX | Shares | $88.3M | 413K |
| Morgan Stanley | MS | Shares | $88.2M | 536K |
| Duke Energy Corp New | DUK 4.125 04/15/26 | Principal | $86.5M | 78.5M |
| Lumentum Hldgs Inc | LITE 0.5 12/15/26 | Principal | $84.5M | 12.0M |
| Strategy Inc | MSTR 0 12/01/29 | Principal | $83.4M | 99.5M |
| Evergy Inc | EVRG 4.5 12/15/27 | Principal | $83.3M | 61.7M |
| Citigroup Inc | C | Shares | $83.2M | 734K |
| Ge Aerospace | GE | Shares | $82.0M | 289K |
| Bloom Energy Corp | BE 3 06/01/28 | Principal | $79.1M | 11.0M |
| Snowflake Inc | SNOW 0 10/01/29 | Principal | $78.2M | 64.0M |
| Marathon Pete Corp | MPC | Shares | $77.9M | 319K |
| American Express Co | AXP | Shares | $76.6M | 253K |
| Intuitive Surgical Inc | ISRG | Shares | $76.4M | 166K |
| Coca Cola Co | KO | Shares | $76.0M | 999K |
| Lowes Cos Inc | LOW | Shares | $74.3M | 315K |
| Ishares Tr | ACWX | Shares | $73.4M | 1.1M |
| Tjx Cos Inc New | TJX | Shares | $73.1M | 458K |
| Procter & Gamble Co | PG | Shares | $72.0M | 499K |
| Apollo Global Mgmt Inc | APO 6.75 07/31/26 | Shares | $71.9M | 1.2M |
| Kkr & Co Inc | KKR 6.25 03/01/28 D | Shares | $71.6M | 1.8M |
| Ppl Cap Fdg Inc | PPL 2.875 03/15/28 | Principal | $71.6M | 61.1M |
| Chubb Ltd Switz | Shares | $71.3M | 219K | |
| Csx Corp | CSX | Shares | $70.7M | 1.7M |
| Cms Energy Corp | CMS 3.375 05/01/28 | Principal | $70.5M | 62.4M |
| Norfolk Southn Corp | NSC | Shares | $70.2M | 245K |
| Boeing Co | BA | Shares | $68.9M | 346K |
| Thermo Fisher Scientific Inc | TMO | Shares | $68.4M | 139K |
| Union Pac Corp | UNP | Shares | $68.1M | 281K |
| Unitedhealth Group Inc | UNH | Shares | $67.9M | 251K |
| Ishares Tr | EFA | Call | $67.2M | 700K |
| Sea Ltd | SEALTD 0.25 09/15/26 | Principal | $65.2M | 66.6M |
| Arista Networks Inc | ANET | Shares | $64.6M | 526K |
| Strategy Inc | MSTR 2.25 06/15/32 | Principal | $63.4M | 61.9M |
| Victory Portfolios Ii | UITB | Shares | $62.7M | 1.3M |
| Live Nation Entertainment In | LYV 2.875 01/15/30 | Principal | $61.9M | 57.1M |
| Jazz Investments I Ltd | JAZZ 3.125 09/15/30 | Principal | $61.8M | 43.7M |
| Oracle Corp | ORCL | Shares | $61.2M | 416K |
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.