Who owns Calamos S&P 500 Structured Alt Protection ETF – August?
Institutional ownership of CPSA from SEC Form 13F filings across 12 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
12
13F holders
$7.1M
value, 2026 filers
19.3%
of shares outstanding (294,330 sh)
2
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30· % of fund = share of the manager's own book · % of co. = share of CPSA's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 74,759 | $2.1M | 0.0% | 4.9% | +51.2% |
| 2 | LPL Financial LLC | 51,898 | $1.4M | 0.0% | 3.4% | +2.0% |
| 3 | COMMONWEALTH EQUITY SERVICES, LLC | 47,225 | $1.3M | 0.0% | 3.1% | 0.0% |
| 4 | OSAIC HOLDINGS, INC. | 26,700 | $741,192 | 0.0% | 1.7% | +2327.3% |
| 5 | Grantvest Financial Group LLC | 21,436 | $595,063 | 0.3% | 1.4% | -38.2% |
| 6 | Capital Analysts, LLC | 20,937 | $581 | 0.0% | 1.4% | 0.0% |
| 7 | Cambridge Investment Research Advisors, Inc. | 18,682 | $518 | 0.0% | 1.2% | +63.4% |
| 8 | OLD MISSION CAPITAL LLC | 13,225 | $367,126 | 0.0% | 0.9% | -48.1% |
| 9 | J.W. COLE ADVISORS, INC.NEW | 10,720 | $297,587 | 0.0% | 0.7% | new |
| 10 | FIDUCIARY FINANCIAL ADVISORSNEW | 7,894 | $219,138 | 0.0% | 0.5% | new |
| 11 | Steward Partners Investment Advisory, LLC | 824 | $22,874 | 0.0% | 0.1% | 0.0% |
| 12 | New England Capital Financial Advisors LLC | 30 | $833 | 0.0% | 0% | 0.0% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.