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PFO · Flaherty & Crumrine PREFERRED & INCOME OPPORTUNITY FUND INC

$9.02 -0.06 (-0.66%) At close · Jul 29
Market Cap
$117.96M
Shares
13.08M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

The Jun 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out.
Holders: 51
Total Value: $40,436,032
Total Shares: 4,457,072

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 51 13F filers
Top Holder
34.5%
Jun 2023 → Mar 2026 · range 10.1% – 34.5%
of institutional value
Top 5
69.3%
Jun 2023 → Mar 2026 · range 40.4% – 69.3%
of institutional value
Top 10
82.8%
Jun 2023 → Mar 2026 · range 63.8% – 82.8%
of institutional value
HHI
1,580
Jun 2023 → Mar 2026 · range 513 – 1,580
Moderately concentrated
Showing 51 of 51
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 882071 CUSIP 33848E106 13F (30d) 15 filings 15 filers Visit website