Calamos Advisors LLC
SEC Form 13F institutional filer · CIK 0001316507
13F-HR · 359 reported holdings · 2026-03-31
Calamos Advisors LLC is an asset manager.
Reported long-US-equity value
$18.47B
Top-10 concentration
37.6%
Calamos Advisors LLC — $18.5B AUM allocation strategy
Calamos Advisors LLC files SEC Form 13F and reports $18.5B of long US equity value across 359 reported holdings for 2026-03-31.
Its largest sector bet is Information Technology 23.2%, followed by Communication Services 7.8% and Consumer Discretionary 5.6%.
The top 10 holdings account for 38% of reported value — a broadly spread portfolio. The sector and industry splits below are of the same reported value. Track quarter-over-quarter adds, trims, new positions and exits below — sourced from SEC 13F filings, public domain.
Calamos Advisors LLC — latest SEC 13F insights
Reported long-US-equity value (13F AUM)
$18.5B
total across 359 reported holdings · 2026-03-31 · excludes shorts, cash, non-US
Top-10 concentration
38% of value
higher = narrower conviction; lower = spread / hedging
Biggest adds (shares)
+$ORCL +4.07M sh · +$161M+$AES +1.32M sh · +$18.5M+$BLK +1.07M sh · +$123M
Biggest trims (shares)
−$IVZ −538K sh · −$8.33M−$HBAN −517K sh · −$9.65M−$HPE −496K sh · −$36.1M
Exited to nil (held last quarter, gone now)
$QTOP ($28.4M last qtr)$COHR ($11M last qtr)$HOOD ($10.6M last qtr)$EXPD ($542K last qtr)
Sector allocation (share of reported value)
each slice is a share of the reported long-US-equity value — smaller sectors and the rest of the book roll into “Other holdings”
Qtr shift = share-point change vs the prior quarter's filing — first period tracked for this filer; the column fills in with the next quarterly refresh.
Industry allocation (share of reported value)
- Semiconductors10.5%—
- Interactive Media & Services7.8%—
- Technology Hardware, Storage & Peripherals6.6%—
- Systems Software4.8%—
- Broadline Retail3.9%—
- Pharmaceuticals2.6%—
- Automobile Manufacturers1.7%—
- Aerospace & Defense1.4%—
- Other holdings60.9%—
the finer GICS cut of the same book — same denominator — smaller industries roll into “Other holdings”
Qtr shift = share-point change vs the prior quarter's filing — first period tracked for this filer; the column fills in with the next quarterly refresh.
Top S&P 500 holdings
9 of 9 rows · sorted by Value ↓
| Ticker | Holding | Shares | Value | Δ QoQ | Weight |
|---|---|---|---|---|---|
| $NVDA | NVIDIA Corporation | 8.19M | $1.43B | +971K | 7.7% |
| $AAPL | Apple Inc | 4.78M | $1.21B | +804K | 6.6% |
| $MSFT | Microsoft Corporation | 2.38M | $879M | +247K | 4.8% |
| $GOOG | Alphabet Inc. Class C Capital Stock | 2.56M | $736M | +273K | 4.0% |
| $AMZN | Amazon.com Inc | 3.41M | $709M | +265K | 3.8% |
| $AVGO | Broadcom Inc | 1.65M | $511M | +269K | 2.8% |
| $META | Meta Platforms Inc | 731K | $418M | +67.8K | 2.3% |
| $TSLA | Tesla Inc | 841K | $313M | +43K | 1.7% |
| $GOOGL | Alphabet Inc | 1M | $287M | +77.8K | 1.6% |
…and 350 more holdings in the full 13F filing (top positions only shown).
SEC Form 13F data sets · public domain · 45-day filing lag · >$100M AUM managers · as reported
← All 13F filers·← QuantOrb.pro
How to read Δ QoQ — the five insight categories, and the caveats
The categories. Analysts, quants and retail traders look past total portfolio value to isolate actionable signals. Five categories matter.
Conviction & concentration shifts
New positions vs complete exits — a brand-new stock signals high conviction; a full liquidation suggests a broken thesis or tax-loss harvesting. Aggressive sizing — look at share count, not dollars: a 20% share increase during a drawdown is strong dip-buying. Concentration — a narrowing top-5/10 means conviction; spreading capital across more names means hedging.
Sector & macro allocation rotations
Aggregating Δ QoQ moves across sectors shows where smart money is leaning in or sneaking out — rotating out of growth into defensives or energy, for example. The fund's total long equity exposure quarter-over-quarter is a proxy for overall institutional risk appetite.
Crowding & smart-money consensus
When several managers initiate or expand the same stock in the same quarter, that is institutional consensus. Contrarian reads: top pickers buying hard into a beaten-down name the market is selling.
Derivative & option overlays
Reported call/put changes indicate whether managers are adding downside hedges or leveraging upside exposure. Note: a long increase may be half of a market-neutral pair trade.
Who reads this
| Retail "cloners" | High-conviction ideas to replicate ~45 days after quarter-end. |
| Corporate IR | Which funds bought or dumped the stock, before the next call. |
| Quant / algo traders | Cross-sectional factor inputs: flow, momentum, ownership. |
Four caveats before you trade on it
- 45-day lag — holdings are quarter-end; positions may already be closed.
- Long-only — 13Fs miss shorts, pair trades and cash.
- No non-US / fixed income — the picture is US equities plus options.
- Corporate actions — splits and spinoffs distort raw share deltas.
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