§ 13F · FUND PROFILE
Calamos Advisors LLC.
AUM · $30.1B (13F)Positions · 1059Turnover · 100% · Q4Filed · Jul 31, 2026
CONCENTRATION
27%
Top 10 holdings
NEW BUYS
+997
+$3.2B deployed
EXITS
0
No exits
SECTOR SHIFT
RETAIL → SEMICONDUCTORS
-0pp · +1pp
§ 01 · TOP HOLDINGS
The book · Q4 2025
FILED JUL 31, 2026
| # | Ticker | Name | Shares | $ value | % port | Δ Q4 |
|---|---|---|---|---|---|---|
| 1 | NVDA | NVIDIA CORPORATION | 7.06M | $1.4B | 4.7% | −14% |
| 2 | AAPL | APPLE INC | 3.93M | $1.1B | 3.8% | −15% |
| 3 | CBOX | CALAMOS ETF TR | 10.69M | $1.1B | 3.6% | NEW |
| 4 | WDC 3 11/15/28 | WESTERN DIGITAL CORP | 48.73M | $825M | 2.7% | −12% |
| 5 | SPY | STATE STR SPDR S&P 500 ETF T | 1.25M | $811M | 2.7% | −12% |
| 6 | MSFT | MICROSOFT CORP | 2.05M | $763M | 2.5% | −13% |
| 7 | GOOGL | ALPHABET INC | 2.02M | $722M | 2.4% | −21% |
| 8 | AMZN | AMAZON COM INC | 2.99M | $713M | 2.4% | −11% |
| 9 | SPY | STATE STR SPDR S&P 500 ETF T | 853K | $555M | 1.8% | — |
| 10 | AVGO | BROADCOM INC | 1.37M | $519M | 1.7% | −16% |
§ 02 · SECTOR ALLOCATION
Where the money is
Other25.4% (±0)
Technology11.3% (±0)
Semiconductors9.1% (+1pp)
Media6.9% (+1pp)
Retail5.1% (±0)
Financial Services3.9% (±0)
§ 03 · THE CALAMOS SIGNAL
AC read
Calamos Advisors LLC is a Other fund managing $30.1 billion in assets. The fund runs a massive portfolio of 1,059 positions, broad diversification across holdings, with the top 10 accounting for 27%. Trading activity is aggressive at 100% quarterly turnover, with 997 new positions and 0 exits last quarter. Top sector allocations: Other (25%), Technology (11%), Semiconductors (9%).
Read the full dossier →§ 04 · FILING HISTORY
Q-by-Q deltas
2 OF 2 FILINGS MEASURED
Q4 2025
Busy quarter
+997 buys · −0 exits · 0 changed
Q2 2025
Steady book
+0 buys · −0 exits · 0 changed