Calamos ETF Trust - Russell 2000 Structured Alt Protection ETF - July
US ˙ ARCA

SecurityCPRJ / Calamos ETF Trust - Russell 2000 Structured Alt Protection ETF - July
InstitutionAdvisor OS, LLC
Latest Disclosed Ownership9,645 shares
Latest Disclosed Value $ 259,933
Advisor OS, LLC ownership in CPRJ / Calamos ETF Trust - Russell 2000 Structured Alt Protection ETF - July

On May 7, 2026 - Advisor OS, LLC filed a 13F-HR form disclosing ownership of 9,645 shares of Calamos ETF Trust - Russell 2000 Structured Alt Protection ETF - July (US:CPRJ) valued at $259,933 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 4, 2026 disclosing 9,645 shares of Calamos ETF Trust - Russell 2000 Structured Alt Protection ETF - July. This represents a change in shares of 0.00% during the quarter. The current value of the position is $265,816 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-07 2026-03-31 13F CALAMOS ETF TR RUSSELL 2000 STR 12811T837 9,645 0 0.00 260 0.39 0.0073
2026-02-04 2025-12-31 13F CALAMOS ETF TR RUSSELL 2000 STR 12811T837 9,645 -1,437 -12.97 258 -11.64 0.0076
2025-11-12 2025-09-30 13F CALAMOS ETF TR RUSSELL 2000 STR 12811T837 11,082 1,437 14.90 293 17.74 0.0253
2025-08-14 2025-06-30 13F CALAMOS ETF TR RUSSELL 2000 STR 12811T837 9,645 -1,437 -12.97 249 -9.82 0.0245
2025-05-06 2025-03-31 13F CALAMOS ETF TR RUSSELL 2000 STR 12811T837 11,082 0 0.00 275 -2.48 0.0313
2025-02-05 2024-12-31 13F CALAMOS ETF TR RUSSELL 2000 STR 12811T837 11,082 1,437 14.90 282 16.05 0.0327
2024-11-04 2024-09-30 13F CALAMOS ETF TR RUSSELL 2000 STR 12811T837 9,645 9,645 243 0.0242
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.