Who owns Calamos S&P 500 Structured Alt Protection ETF – January?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of CPSY from SEC Form 13F filings across 20 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.
As of the 2026-06-30 reporting period, 20 institutions disclosed 621,502 shares of Calamos S&P 500 Structured Alt Protection ETF – January worth $14.8M — about 60.7% of shares outstanding; the largest disclosed holder is Calamos Advisors LLC. Source: SEC Form 13F filings, parsed by EvidInvest.
20
13F holders
$14.8M
value, 2026 filers
60.7%
of shares outstanding (621,502 sh)
5
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 CPSY's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | Calamos Advisors LLC | 373,266 | $9.6M | 0.0% | 36.5% | +0.3% |
| 2 | Cetera Investment Advisers | 38,038 | $977,577 | 0.0% | 3.7% | 0.0% |
| 3 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 26,816 | $689,171 | 0.0% | 2.6% | +17.3% |
| 4 | JIM SAULNIER & ASSOCIATES, LLC | 25,796 | $662,957 | 0.3% | 2.5% | 0.0% |
| 5 | Mariner, LLC | 25,578 | $657,355 | 0.0% | 2.5% | 0.0% |
| 6 | Sterling Financial Planning, Inc. | 24,970 | $641,729 | 0.2% | 2.4% | 0.0% |
| 7 | WEDBUSH SECURITIES INC | 21,407 | $550 | 0.0% | 2.1% | +0.6% |
| 8 | Cambridge Investment Research Advisors, Inc. | 14,922 | $383 | 0.0% | 1.5% | +56.3% |
| 9 | OLD MISSION CAPITAL LLC | 11,921 | $306,369 | 0.0% | 1.2% | -5.4% |
| 10 | TrustBankNEW | 11,421 | $293,520 | 0.1% | 1.1% | new |
| 11 | Calamos Wealth Management LLC | 11,125 | $285,913 | 0.0% | 1.1% | -27.7% |
| 12 | HARBOUR INVESTMENTS, INC. | 9,337 | $239,961 | 0.0% | 0.9% | 0.0% |
| 13 | Waverly Advisors, LLC | 8,512 | $218,758 | 0.0% | 0.8% | 0.0% |
| 14 | CENTAURUS FINANCIAL, INC. | 6,393 | $164 | 0.0% | 0.6% | 0.0% |
| 15 | OSAIC HOLDINGS, INC.NEW | 6,000 | $154,200 | 0.0% | 0.6% | new |
| 16 | Capital Analysts, LLC | 3,231 | $83 | 0.0% | 0.3% | 0.0% |
| 17 | UBS Group AGNEW | 1,996 | $51,297 | 0.0% | 0.2% | new |
| 18 | Essential Investment Partners LLCNEW | 500 | $12,850 | 0.0% | 0% | new |
| 19 | TUCKER ASSET MANAGEMENT LLCNEW | 147 | $3,778 | 0.0% | 0% | new |
| 20 | New England Capital Financial Advisors LLC | 126 | $3,239 | 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.