Calamos Advisors LLC — 13F Holdings & Portfolio
CIK 1316507 · latest 13F-HR filed 2026-07-31
Calamos Advisors LLC manages $30.07B in 13F-reported U.S. long-equity assets across 1,059 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are NVDA (4.70%), AAPL (3.78%), CBOX (3.58%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 159 new positions, exited 361, added to 305, and trimmed 261.
AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.
NAPERVILLE, IL 60563
$30.07B
Long-equity book
1,059
Distinct positions
2026-06-30
Filed 2026-07-31
+159 / −361 / ↑305 / ↓261
vs 2026-03-31
| Name | Title / Status | Ownership | Type |
|---|
Top Adds (vs prior quarter)
- WESTERN DIGITAL CORP$426.2M +106.8%
- MICRON TECHNOLOGY INC$253.0M +232.4%
- ADVANCED MICRO DEVICES INC$216.9M +223.1%
- INTEL CORP$134.1M +311.6%
- APPLIED MATLS INC$114.4M +109.0%
Top Trims
- STATE STR SPDR S&P 500 ETF T-$448.6M -97.8%
- ISHARES TR-$167.6M -93.9%
- ISHARES TR-$126.5M -95.7%
- ISHARES TR-$125.6M -96.1%
- MICROSOFT CORP-$116.5M -13.2%
New Positions
- CALAMOS ETF TR$1.08B
- ALPHABET INC$237.3M
- ALPHABET INC$232.2M
- DOORDASH INC$126.4M
- CLOUDFLARE INC$121.0M
Exited Positions
- WAYFAIR INC$102.8M
- DUKE ENERGY CORP NEW$86.5M
- LUMENTUM HLDGS INC$84.5M
- BLOOM ENERGY CORP$79.1M
- ISHARES TR$57.1M
Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).
| # | Issuer | Symbol | CUSIP | Value | Weight | Shares | Type |
|---|---|---|---|---|---|---|---|
| 1 | NVIDIA CORPORATION | NVDA | 67066G104 | $1.41B | 4.70% | 7,059,874 | SH |
| 2 | APPLE INC | AAPL | 037833100 | $1.14B | 3.78% | 3,925,539 | SH |
| 3 | CALAMOS ETF TR | CBOX | 12811T514 | $1.08B | 3.58% | 10,693,254 | SH |
| 4 | WESTERN DIGITAL CORP | WDC | 958102AT2 | $825.1M | 2.74% | 48,728,000 | PRN |
| 5 | STATE STR SPDR S&P 500 ETF T Put | SPY | 78462F103 | $810.8M | 2.70% | 1,246,800 | SH |
| 6 | MICROSOFT CORP | MSFT | 594918104 | $762.8M | 2.54% | 2,045,038 | SH |
| 7 | ALPHABET INC | GOOGL | 02079K305 | $721.7M | 2.40% | 2,019,467 | SH |
| 8 | AMAZON COM INC | AMZN | 023135106 | $713.0M | 2.37% | 2,991,600 | SH |
| 9 | STATE STR SPDR S&P 500 ETF T Call | SPY | 78462F103 | $554.9M | 1.85% | 853,300 | SH |
| 10 | BROADCOM INC | AVGO | 11135F101 | $519.3M | 1.73% | 1,374,612 | SH |
| 11 | META PLATFORMS INC | META | 30303M102 | $370.4M | 1.23% | 657,623 | SH |
| 12 | MICRON TECHNOLOGY INC | MU | 595112103 | $361.8M | 1.20% | 313,454 | SH |
| 13 | ELI LILLY & CO | LLY | 532457108 | $339.4M | 1.13% | 283,001 | SH |
| 14 | ALPHABET INC | GOOG | 02079K107 | $320.5M | 1.07% | 907,212 | SH |
| 15 | ADVANCED MICRO DEVICES INC | AMD | 007903107 | $314.1M | 1.04% | 540,770 | SH |
| 16 | TESLA INC | TSLA | 88160R101 | $314.0M | 1.04% | 746,440 | SH |
| 17 | ALPHABET INC | GOOGM | 02079K404 | $237.3M | 0.79% | 4,662,875 | SH |
| 18 | ALPHABET INC | GOOGN | 02079K602 | $232.2M | 0.77% | 4,615,868 | SH |
| 19 | JPMORGAN CHASE & CO | JPM | 46625H100 | $231.9M | 0.77% | 708,384 | SH |
| 20 | VISA INC | V | 92826C839 | $226.9M | 0.75% | 661,467 | SH |
| 21 | ALIBABA GROUP HLDG LTD | BABAF | 01609WBG6 | $223.2M | 0.74% | 189,049,000 | PRN |
| 22 | APPLIED MATLS INC | AMAT | 038222105 | $219.4M | 0.73% | 303,395 | SH |
| 23 | INVESCO QQQ TR Put | QQQ | 46090E103 | $197.2M | 0.66% | 341,600 | SH |
| 24 | BOEING CO | BAPA | 097023204 | $185.4M | 0.62% | 2,754,965 | SH |
| 25 | HEWLETT PACKARD ENTERPRISE C | HPEPC | 42824C208 | $183.5M | 0.61% | 1,586,652 | SH |
| 26 | ORACLE CORP | ORCLPD | 68389X204 | $178.8M | 0.59% | 3,976,804 | SH |
| 27 | INTEL CORP | INTC | 458140100 | $177.1M | 0.59% | 1,268,305 | SH |
| 28 | ISHARES TR Call | EFA | 464287465 | $168.0M | 0.56% | 1,730,000 | SH |
| 29 | GOLDMAN SACHS GROUP INC | GS | 38141G104 | $167.6M | 0.56% | 165,711 | SH |
| 30 | JOHNSON & JOHNSON | JNJ | 478160104 | $164.4M | 0.55% | 647,222 | SH |
| 31 | CATERPILLAR INC | CAT | 149123101 | $160.0M | 0.53% | 150,261 | SH |
| 32 | LAM RESEARCH CORP | LRCX | 512807306 | $158.4M | 0.53% | 365,435 | SH |
| 33 | EXXON MOBIL CORP | XOM | 30231G102 | $155.3M | 0.52% | 1,135,866 | SH |
| 34 | WALMART INC | WMT | 931142103 | $154.4M | 0.51% | 1,362,951 | SH |
| 35 | MKS INC. | MKSI | 55306NAB0 | $149.9M | 0.50% | 50,767,000 | PRN |
| 36 | SNOWFLAKE INC | SNOW | 833445AD1 | $148.4M | 0.49% | 83,995,000 | PRN |
| 37 | ON SEMICONDUCTOR CORP | ON | 682189AU9 | $147.7M | 0.49% | 122,336,000 | PRN |
| 38 | GE VERNOVA INC | GEV | 36828A101 | $145.3M | 0.48% | 123,656 | SH |
| 39 | CISCO SYS INC | CSCO | 17275R102 | $138.5M | 0.46% | 1,178,914 | SH |
| 40 | UNITEDHEALTH GROUP INC | UNH | 91324P102 | $128.6M | 0.43% | 309,379 | SH |
| 41 | DOORDASH INC | DASH | 25809KAB1 | $126.4M | 0.42% | 128,612,000 | PRN |
| 42 | BERKSHIRE HATHAWAY INC DEL | BRK.B | 084670702 | $126.3M | 0.42% | 252,430 | SH |
| 43 | BANK OF AMER CORP | BAC | 060505104 | $125.8M | 0.42% | 2,207,262 | SH |
| 44 | MASTERCARD INCORPORATED | MA | 57636Q104 | $122.7M | 0.41% | 238,960 | SH |
| 45 | CLOUDFLARE INC | PSAPF | 18915MAF4 | $121.0M | 0.40% | 95,422,000 | PRN |
| 46 | CYBERARK SOFTWARE LTD | CYBR | 23248VAD7 | $120.7M | 0.40% | 72,437,000 | PRN |
| 47 | AKAMAI TECHNOLOGIES INC | AKAM | 00971TAQ4 | $114.3M | 0.38% | 78,152,000 | PRN |
| 48 | WELLS FARGO & CO | WFC | 949746101 | $112.9M | 0.38% | 1,366,153 | SH |
| 49 | MICROCHIP TECHNOLOGY INC. | MCHPP | 595017302 | $111.9M | 0.37% | 1,458,634 | SH |
| 50 | PPL CORP | PPLC | 69351T866 | $109.7M | 0.36% | 2,236,184 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-06-30 | 2026-07-31 | $30.07B | 1,059 | 0001316507-26-000003 |
| 2026-03-31 | 2026-05-04 | $28.22B | 1,269 | 0001316507-26-000002 |
| 2025-12-31 | 2026-01-29 | $26.63B | 997 | 0001316507-26-000001 |