SEC holdings report of an institutional investment manager
What does Calamos Advisors LLC report holding?
Calamos Advisors LLC reported holdings of $30.07 billion on Form 13F for the quarter ended 30 June 2026, ranked 261st of 8,857 managers by reported value. The report was filed on .
Reported value
Calamos Advisors LLC reported holdings of $30.07 billion on Form 13F for the quarter ended 30 June 2026, ranked 261st of 8,857 managers by reported value.
In the quarter before, the quarter ended 31 March 2026, it reported $28.22 billion, so the value is up from then (+6.5%).
Its table has 1,059 entries, which make 980 positions when the lines of a security are summed.
The filing
Filed on for the quarter ended 30 June 2026; the manager is in NAPERVILLE, IL.
The SEC's accession number of the filing is 0001316507-26-000003. The filing is the manager's own. This page shows the value it states for its table and the lines of the table, summed.
As filed
Facts as filed with the SEC, and our arithmetic on them. Not investment advice.
Understanding the report of Calamos Advisors LLC
Where it stands today
Calamos Advisors LLC reported $30.1 billion for the quarter ended 30 June 2026, ranked 261st of 8,857 managers.
Where do these numbers come from?
An institutional investment manager that holds 100 million dollars or more of the securities Form 13F covers files a report with the SEC every quarter. This page shows the report of Calamos Advisors LLC for the quarter ended 30 June 2026.
Read more
The rank counts every manager that filed a holdings report for the quarter, by the total value its table states, the largest first.
The numbers behind the chart
What are the largest holdings of Calamos Advisors LLC?25 positions
| Issuer, as filed | Class | Value | Share of its value | Shares | Change from 31 March 2026 | FIGI |
|---|---|---|---|---|---|---|
| NVIDIA CORPORATION | COM | $1.41B | 4.7% | 7.06M | −13.8% | BBG001S5TZJ6 |
| APPLE INC | COM | $1.14B | 3.8% | 3.93M | −17.9% | BBG001S5N8V8 |
| CALAMOS ETF TR | TAX AWA COLL ETF | $1.08B | 3.6% | 10.7M | New | BBG021LP89G1 |
| WESTERN DIGITAL CORP | NOTE 3.000%11/1 | $825M | 2.7% | $48.7M principal | −12.4% | – |
| STATE STR SPDR [index name] ETF T | TR UNIT, put | $811M | 2.7% | 1.25M | +38.5% | BBG001S72SM3 |
| MICROSOFT CORP | COM | $763M | 2.5% | 2.05M | −13.9% | BBG001S5TD05 |
| ALPHABET INC | CAP STK CL A | $722M | 2.4% | 2.02M | −21.1% | BBG009S39JY5 |
| AMAZON COM INC | COM | $713M | 2.4% | 2.99M | −12.2% | BBG001S5PQL7 |
| STATE STR SPDR [index name] ETF T | TR UNIT, call | $555M | 1.8% | 853K | +5.5% | BBG001S72SM3 |
| BROADCOM INC | COM | $519M | 1.7% | 1.37M | −16.8% | BBG00KHY5SY8 |
| META PLATFORMS INC | CL A | $370M | 1.2% | 658K | −10.0% | BBG001SQCQC5 |
| MICRON TECHNOLOGY INC | COM | $362M | 1.2% | 313K | −2.7% | BBG001S6P675 |
| ELI LILLY & CO | COM | $339M | 1.1% | 283K | −8.3% | BBG001S5STL8 |
| ALPHABET INC | CAP STK CL C | $321M | 1.1% | 907K | −9.4% | BBG009S3NB21 |
| ADVANCED MICRO DEVICES INC | COM | $314M | 1.0% | 541K | +13.1% | BBG001S5NN36 |
| TESLA INC | COM | $314M | 1.0% | 746K | −11.3% | BBG001SQKGD7 |
| ALPHABET INC | DEP SHS RP1/20 A | $237M | 0.79% | 4.66M | New | – |
| ALPHABET INC | DEP SHS RP1/20 B | $232M | 0.77% | 4.62M | New | – |
| JPMORGAN CHASE & CO | COM | $232M | 0.77% | 708K | −12.0% | BBG001S8CRC3 |
| VISA INC | COM CL A | $227M | 0.75% | 661K | −13.2% | BBG001SRCFY3 |
| ALIBABA GROUP HLDG LTD | NOTE 0.500% 6/0 | $223M | 0.74% | $189M principal | 0.0% | – |
| APPLIED MATLS INC | COM | $219M | 0.73% | 303K | −1.2% | BBG001S5NMM7 |
| INVESCO QQQ TR | UNIT SER 1, put | $197M | 0.66% | 342K | −35.9% | BBG001S9GN63 |
| BOEING CO | DEP CONV PFD A | $185M | 0.62% | 2.75M | −3.8% | – |
| HEWLETT PACKARD ENTERPRISE C | 7.625 MAND CONV | $184M | 0.61% | 1.59M | +13.9% | – |
The table scrolls sideways; the first column stays in place.
Which positions are new in the quarter ended 30 June 2026?10 positions, the largest first
| Issuer, as filed | Class | Value |
|---|---|---|
| CALAMOS ETF TR | TAX AWA COLL ETF | $1.08B |
| ALPHABET INC | DEP SHS RP1/20 A | $237M |
| ALPHABET INC | DEP SHS RP1/20 B | $232M |
| DOORDASH INC | NOTE 5/1 | $126M |
| CLOUDFLARE INC | NOTE 6/1 | $121M |
| CYBERARK SOFTWARE LTD | NOTE 6/1 | $121M |
| AKAMAI TECHNOLOGIES INC | NOTE 0.250% 5/1 | $114M |
| ETSY INC | NOTE 1.000% 6/1 | $85.2M |
| SUPER MICRO COMPUTER INC | 7 DEP CM SR A WI | $78.7M |
| SOUTHERN CO | NOTE 3.250% 6/1 | $71.2M |
Which positions were sold out since the quarter ended 31 March 2026?10 positions, the largest first
| Issuer, as filed | Class | Value then |
|---|---|---|
| WAYFAIR INC | NOTE 3.500%11/1 | $103M |
| DUKE ENERGY CORP NEW | NOTE 4.125% 4/1 | $86.5M |
| LUMENTUM HLDGS INC | NOTE 0.500%12/1 | $84.5M |
| BLOOM ENERGY CORP | NOTE 3.000% 6/0 | $79.1M |
| ISHARES TR | RUSSELL 3000 ETF | $57.1M |
| AMERICAN WTR CAP CORP | NOTE 3.625% 6/1 | $55.6M |
| BLOCK INC | NOTE 5/0 | $40.8M |
| UNITED STS OIL FD LP | UNITS, put | $40.1M |
| HONEYWELL INTL INC | COM | $37.1M |
| CSG SYS INTL INC | NOTE 3.875% 9/1 | $36.5M |
What did Calamos Advisors LLC report in each quarter?8 quarters
| Quarter ended | Filed | Value reported | Entries | Rank |
|---|---|---|---|---|
| $30.1B | 1,059 | 261 | ||
| $28.2B | 1,269 | 234 | ||
| $26.6B | 997 | 248 | ||
| $27.1B | 1,003 | 238 | ||
| $25.4B | 991 | 232 | ||
| $23.0B | 987 | 233 | ||
| $23.9B | 1,059 | 236 | ||
| $23.1B | 1,072 | 233 |
The table scrolls sideways; the first column stays in place.
What do these figures leave out, and where are they from?Limits and source
What this number cannot tell you
- A manager reports the value of its holdings on the last day of a quarter, within 45 days after it. A report that the manager amended is shown with the amendments applied.
- Values are as filed, in dollars. A manager that files a combination report includes the holdings of the managers it names, so the same holding can be in two reports.
- Only holdings that Form 13F covers are reported: US exchange-traded stocks and some funds, options and convertible bonds. Cash, most bonds and holdings abroad are not in a report.
- The table lists a position once for each security, class, and put or call: the lines of the manager's table are summed. A line for a put or call states the value of the shares the option covers, not what the option costs or is worth.
- A share is the value of a position as a part of the value of all the lines of the manager's table.
- Where a name as filed includes the trademarked name of a stock index, the page shows [index name] in its place.
- A position is new when the manager's table for the quarter before has no line for the security, and sold out when its table for this quarter has none. It says nothing about when a position was bought or sold: only the quarter ends are compared.
- A manager can ask the SEC to keep some of its holdings confidential for a time; those holdings are missing from its report until it discloses them.
- The FIGI is the identifier the manager wrote for the line, where it wrote one. The manager's other identifiers are not shown.
Observed .
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