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Livermore
Livermore
ZHEN

Calamos Advisors LLC

SEC CIK
0001316507
Latest filing
Jul 31, 2026

The latest 13F from Calamos Advisors LLC covers Q2 2026 (filed Jul 31, 2026): 942 long positions worth $27.6B. The top 10 holdings make up 28.6% of the portfolio, and the largest is NVIDIA Corp (NVDA) at 5.1%. Livermore has 22 filings on Form 13F from this institution, going back to Q1 2021.

What changed in Q2 2026

Share counts compared with Q1 2026: how many positions were new, added to, reduced or sold out, and the biggest buys and sells. Dollar amounts are estimated at the quarter-end prices implied by the filing.

Full comparison
New
156
Est. +$3.21B
Added
138
Est. +$436.9M
Reduced
369
Est. −$3.92B
Sold out
358
Est. −$1.23B

Top 5 holdings

Share of this quarter's portfolio value

  1. NVDANVIDIA Corp
    5.1%$1.41BHistory
  2. AAPLApple Inc.
    4.1%$1.14BHistory
  3. Calamos ETF Tr12811T514
    3.9%$1.08B
  4. Western Digital Corp958102AT2
    3.0%$825.1M
  5. MSFTMicrosoft Corp
    2.8%$762.8MHistory

Biggest buys

New and added positions, by estimated amount bought

  1. Calamos ETF Tr12811T514
    +$1.08BNew
  2. GOOGMAlphabet Inc.
    +$237.3MNewHistory
  3. GOOGNAlphabet Inc.
    +$232.2MNewHistory
  4. DoorDash, Inc.25809KAB1
    +$126.4MNew
  5. Cloudflare, Inc.18915MAF4
    +$121.0MNew

Largest weight increases

New and added positions, by percentage points of the portfolio gained

  1. Calamos ETF Tr12811T514
    +3.91 pp0.0% → 3.9%
  2. GOOGMAlphabet Inc.
    +0.86 pp0.0% → 0.9%History
  3. GOOGNAlphabet Inc.
    +0.84 pp0.0% → 0.8%History
  4. AMDAdvanced Micro Devices Inc
    +0.76 pp0.4% → 1.1%History
  5. INTCIntel Corp
    +0.48 pp0.2% → 0.6%History

Biggest sells

Reduced and sold-out positions, by estimated amount sold

  1. SPYSPDR S&P 500 ETF Trust
    −$516.6MReducedHistory
  2. AAPLApple Inc.
    −$246.9MReducedHistory
  3. NVDANVIDIA Corp
    −$225.2MReducedHistory
  4. iShares Core S&P 500 ETF464287200
    −$193.8MReduced
  5. GOOGLAlphabet Inc.
    −$192.5MReducedHistory

Largest weight decreases

Reduced and sold-out positions, by percentage points of the portfolio lost

  1. SPYSPDR S&P 500 ETF Trust
    −1.74 pp1.8% → <0.1%History
  2. iShares Core S&P 500 ETF464287200
    −0.65 pp0.7% → <0.1%
  3. MSFTMicrosoft Corp
    −0.63 pp3.4% → 2.8%History
  4. AAPLApple Inc.
    −0.57 pp4.7% → 4.1%History
  5. iShares S&P 500 Growth ETF464287309
    −0.49 pp0.5% → <0.1%

Metrics

13F metrics for Q2 2026, computed only from the numbers in the filings. Definitions below.

Portfolio value
$27.6B
+$1.71B (+6.6%) vs. prior quarter
Positions
942
−202 vs. prior quarter
Top 10 concentration
28.6%
Top 10 as share of value
Turnover
13.7%
Q2 2026, one quarter
Average holding period
14.5 quarters
Weighted by value

How these are calculated

  • Portfolio value: the market value of all long positions in the 13F, as reported at quarter end, excluding options.
  • Top 10 concentration: the combined value of the 10 largest positions as a share of portfolio value.
  • Turnover: the smaller of this quarter's estimated purchases and estimated sales, divided by the average of this and last quarter's portfolio value. Estimates multiply the change in shares by the quarter-end price implied by the filing (market value divided by shares); new positions use this quarter's value and sold-out positions last quarter's. Only positions reported in shares count, and it is not calculated when the previous quarter was not filed.
  • Average holding period: how many consecutive quarters each current position has been held (including this one; a quarter without the position or without a filing starts the count over), weighted by this quarter's value. Counting starts with the first 13F in Livermore (Q1 2021), so positions held before then are understated.

13F filings by quarter

22 quarters, going back to Q1 2021. Bars show each quarter's 13F portfolio value; quarters without a filing are left blank.

Peak $27.6B (Q2 2026)

Q1 2021: $16.9BQ2 2021: $20.1BQ3 2021: $21.2BQ4 2021: $24.9BQ1 2022: $25.7BQ2 2022: $22.3BQ3 2022: $21.0BQ4 2022: $20.7BQ1 2023: $19.9BQ2 2023: $19.7BQ3 2023: $18.4BQ4 2023: $19.5BQ1 2024: $20.6BQ2 2024: $20.6BQ3 2024: $21.3BQ4 2024: $21.7BQ1 2025: $21.2BQ2 2025: $23.4BQ3 2025: $24.7BQ4 2025: $24.3BQ1 2026: $25.9BQ2 2026: $27.6B
Q1 2021Q2 2026
13F filings of Calamos Advisors LLC by quarter
QuarterFiledPositionsValueTop 3 holdingsChangesFiling
Q2 2026Jul 31, 2026942$27.6BNVDAAAPLCalamos ETF Trvs. Q1 2026SEC
Q1 2026May 4, 20261,144$25.9BNVDAAAPLMSFTvs. Q4 2025SEC
Q4 2025Jan 29, 2026883$24.3BNVDAAAPLMSFTvs. Q3 2025SEC
Q3 2025Oct 20, 2025876$24.7BNVDAMSFTAAPLvs. Q2 2025SEC
Q2 2025Aug 8, 2025868$23.4BNVDAMSFTAAPLvs. Q1 2025SEC
Q1 2025Apr 29, 2025861$21.2BAAPLMSFTNVDAvs. Q4 2024SEC
Q4 2024Jan 24, 2025865$21.7BAAPLNVDAMSFTvs. Q3 2024SEC
Q3 2024Nov 7, 2024902$21.3BMSFTAAPLNVDAvs. Q2 2024SEC
Q2 2024Jul 25, 2024909$20.6BMSFTNVDAAAPLvs. Q1 2024SEC
Q1 2024May 8, 2024926$20.6BMSFTNVDAAAPLvs. Q4 2023SEC
Q4 2023Jan 31, 2024884$19.5BMSFTAAPLAMZNvs. Q3 2023SEC
Q3 2023Oct 26, 2023899$18.4BMSFTAAPLAMZNvs. Q2 2023SEC
Q2 2023Jul 28, 2023968$19.7BAAPLMSFTAMZNvs. Q1 2023SEC
Q1 2023May 4, 20231,103$19.9BAAPLMSFTAMZNvs. Q4 2022SEC
Q4 2022Jan 26, 20231,202$20.7BMSFTAAPLVanguard S&P 500 ETFvs. Q3 2022SEC
Q3 2022Oct 24, 20221,245$21.0BAAPLMSFTAMZNvs. Q2 2022SEC
Q2 2022Aug 1, 20221,112$22.3BMSFTAAPLSPYvs. Q1 2022SEC
Q1 2022May 3, 20221,134$25.7BAAPLMSFTAMZNvs. Q4 2021SEC
Q4 2021Feb 1, 20221,083$24.9BMSFTAAPLAMZNvs. Q3 2021SEC
Q3 2021Oct 26, 2021948$21.2BMSFTAAPLAMZNvs. Q2 2021SEC
Q2 2021Jul 22, 2021919$20.1BMSFTAAPLAMZNvs. Q1 2021SEC
Q1 2021Apr 12, 2021877$16.9BMSFTAAPLSPY–SEC

13D and 13G filings

Companies where Calamos Advisors LLC reports owning 5% or more on Schedule 13D or 13G, and its latest filings.

Current stakes of 5% or more

Calamos Advisors LLC does not currently report owning 5% or more of any company.

Latest filings

4 filings on file made by Calamos Advisors LLC or listing it as a reporting person, newest first.

Schedule 13D and 13G filings by Calamos Advisors LLC
CompanyFiled (ET)FilerFormStakeChangeEvent dateFiling
Calamos Aksia Hedged Strategies FundClass I Common StockJul 7, 20262:12 PM ETCalamos John P Srand 2 others13D16.20%950.8K shares−8.30 ppfrom 24.50%Jun 29, 2026SEC
Calamos Aksia Hedged Strategies FundClass I SharesFeb 4, 20263:20 PM ETCalamos John P Srand 2 others13G/A40.40%944.3K shares−24.00 ppfrom 64.40%Dec 31, 2025SEC
Calamos Aksia Hedged Strategies FundClass I SharesNov 14, 20256:32 AM ETCalamos John P Srand 2 others13G64.40%944.3K sharesNewSep 30, 2025SEC
Calamos Aksia Private Equity & Alternatives FundClass I SharesAug 15, 20258:12 PM ETCalamos John P Srand 3 others13G9.70%1.97M sharesNewJun 26, 2025SEC