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 company filings.
Institutional ownership of PFO from SEC Form 13F filings across 49 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, 49 institutions disclosed 4.0M shares of Flaherty & Crumrine Preferred Income Opportunity Fund Inc. worth $37.3M — about 30.9% of shares outstanding; the largest disclosed holder is SIT INVESTMENT ASSOCIATES INC. Source: SEC Form 13F filings, parsed by EvidInvest.
49
13F holders
$37.3M
value, 2026 filers
30.9%
of shares outstanding (4.0M sh)
7
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 | SIT INVESTMENT ASSOCIATES INC | 1.7M | $15.9M | 0.3% | 13.2% | +13.1% |
| 2 | CIBC Bancorp USA Inc. | 588,511 | $5.4M | 0.0% | 4.5% | 0.0% |
| 3 | 1607 Capital Partners, LLC | 200,178 | $1.8M | 0.2% | 1.5% | -37.8% |
| 4 | Private Advisor Group, LLC | 175,625 | $1.6M | 0.0% | 1.3% | -5.8% |
| 5 | Fiera Capital Corp | 128,673 | $1.2M | 0.0% | 1% | +2.7% |
| 6 | Pathstone Holdings, LLC | 101,525 | $938,091 | 0.0% | 0.8% | -62.5% |
| 7 | Noble Wealth Management PBC | 100,360 | $927,324 | 0.4% | 0.8% | +3.0% |
| 8 | Closed-End Fund Advisors, Inc. | 94,929 | $877,144 | 0.9% | 0.7% | +0.2% |
| 9 | D.A. DAVIDSON & CO. | 89,474 | $826,747 | 0.0% | 0.7% | +4.9% |
| 10 | MUSTICO FINANCIAL GROUP, INC. | 83,652 | $757,083 | 0.5% | 0.6% | +2.8% |
| 11 | MORGAN STANLEY | 77,677 | $717,735 | 0.0% | 0.6% | -18.1% |
| 12 | Cambridge Investment Research Advisors, Inc. | 63,965 | $591,000 | 0.0% | 0.5% | -5.0% |
| 13 | Atlas Wealth LLCNEW | 57,449 | $530,829 | 0.1% | 0.4% | new |
| 14 | LPL Financial LLC | 54,614 | $504,635 | 0.0% | 0.4% | +25.5% |
| 15 | Arax Advisory Partners | 54,038 | $499,314 | 0.0% | 0.4% | +1164.0% |
| 16 | Baird Financial Group, Inc. | 41,928 | $387,415 | 0.0% | 0.3% | -1.4% |
| 17 | Sowell Financial Services LLC | 39,073 | $361,035 | 0.0% | 0.3% | 0.0% |
| 18 | WELLS FARGO & COMPANY/MN | 36,061 | $333,205 | 0.0% | 0.3% | -16.3% |
| 19 | Smith Asset Management Co., LLC | 30,718 | $283,834 | 0.2% | 0.2% | -3.5% |
| 20 | CLIFFORD SWAN INVESTMENT COUNSEL LLC | 29,500 | $272,580 | 0.0% | 0.2% | 0.0% |
| 21 | GUGGENHEIM CAPITAL LLC | 25,636 | $236,877 | 0.0% | 0.2% | +0.1% |
| 22 | OSAIC HOLDINGS, INC. | 24,398 | $225,438 | 0.0% | 0.2% | +165.5% |
| 23 | TrueMark Investments, LLC | 22,537 | $208,242 | 0.0% | 0.2% | +7.1% |
| 24 | RIVERNORTH CAPITAL MANAGEMENT, LLC | 22,537 | $208,242 | 0.0% | 0.2% | +7.1% |
| 25 | Logan Stone Capital, LLC | 16,984 | $156,932 | 0.0% | 0.1% | +61.7% |
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.