Who owns Flaherty & Crumrine Preferred Income Opportunity Fund Inc.?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from SEC filings.
Institutional ownership of PFO from SEC Form 13F filings across 36 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, 36 institutions disclosed 1.5M shares of Flaherty & Crumrine Preferred Income Opportunity Fund Inc. worth $12.4M — about 11.2% of shares outstanding; the largest disclosed holder is CIBC Bancorp USA Inc.. Source: SEC Form 13F filings, parsed by EvidInvest.
36
13F holders
$12.4M
value, 2026 filers
11.2%
of shares outstanding (1.5M sh)
6
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 PFO's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | CIBC Bancorp USA Inc. | 588,511 | $5.4M | 0.0% | 4.5% | 0.0% |
| 2 | Cambridge Investment Research Advisors, Inc. | 127,930 | $1,182 | 0.0% | 1% | +90.1% |
| 3 | Pathstone Holdings, LLC | 101,525 | $938,091 | 0.0% | 0.8% | -62.5% |
| 4 | D.A. DAVIDSON & CO. | 89,474 | $826,747 | 0.0% | 0.7% | +4.9% |
| 5 | MUSTICO FINANCIAL GROUP, INC. | 83,652 | $757,083 | 0.5% | 0.6% | +2.8% |
| 6 | MORGAN STANLEY | 77,677 | $717,735 | 0.0% | 0.6% | -18.1% |
| 7 | LPL Financial LLC | 54,614 | $504,635 | 0.0% | 0.4% | +25.5% |
| 8 | Arax Advisory Partners | 54,038 | $499,314 | 0.0% | 0.4% | +1164.0% |
| 9 | Baird Financial Group, Inc. | 41,928 | $387,415 | 0.0% | 0.3% | -1.4% |
| 10 | WELLS FARGO & COMPANY/MN | 36,061 | $333,205 | 0.0% | 0.3% | -16.3% |
| 11 | CLIFFORD SWAN INVESTMENT COUNSEL LLC | 29,500 | $272,580 | 0.0% | 0.2% | 0.0% |
| 12 | OSAIC HOLDINGS, INC. | 24,398 | $225,438 | 0.0% | 0.2% | +165.5% |
| 13 | Traub Capital Management LLCNEW | 16,759 | $154,853 | 0.1% | 0.1% | new |
| 14 | BANK OF AMERICA CORP /DE/ | 14,564 | $134,571 | 0.0% | 0.1% | 0.0% |
| 15 | Cetera Investment Advisers | 13,733 | $126,897 | 0.0% | 0.1% | +17.2% |
| 16 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 13,484 | $124,592 | 0.0% | 0.1% | -2.6% |
| 17 | JAG CAPITAL MANAGEMENT, LLC | 12,700 | $117,348 | 0.0% | 0.1% | 0.0% |
| 18 | MOSAIC FAMILY WEALTH PARTNERS, LLC | 11,824 | $109,251 | 0.0% | 0.1% | 0.0% |
| 19 | Clear Creek Financial Management, LLC | 11,080 | $102,379 | 0.0% | 0.1% | +0.3% |
| 20 | CITADEL ADVISORS LLCNEW | 11,062 | $102,213 | 0.0% | 0.1% | new |
| 21 | AlphaCore Capital LLC | 10,600 | $97,944 | 0.0% | 0.1% | -17.8% |
| 22 | UBS Group AG | 8,578 | $79,261 | 0.0% | 0.1% | +38.4% |
| 23 | Basepoint Wealth LLC | 6,387 | $59,013 | 0.0% | 0% | -35.7% |
| 24 | ROYAL BANK OF CANADA | 5,498 | $51,000 | 0.0% | 0% | +408.1% |
| 25 | MERCER GLOBAL ADVISORS INC /ADVNEW | 4,637 | $42,846 | 0.0% | 0% | new |
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.