PFO · Flaherty & Crumrine PREFERRED & INCOME OPPORTUNITY FUND INC · Holdings

$8.96 +0.00 (+0.00%) At close · Sep 11

Market Cap

$119.13M

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.

Use institutional holdings through the 13F API or MCP →

Quarter:

Holders: 49

Total Value: $37,360,292

Total Shares: 4,043,324

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 49 13F filers · Δ vs Mar 31, 2026

Top Holder

42.5%

+8.0 pts

Top 5

69.6%

+0.3 pts

Top 10

81.2%

−1.7 pts

HHI

2,121

Moderately concentrated+541

Quarterly Activity

vs Mar 31, 2026

New

Increased

Decreased

Sold Out

Unchanged

Holder count: -2

Institutional value: -6.2%

Shares held: -8.2%

Top Buyers

vs Mar 31, 2026

Institution	Added	Now Holds
Mid SIT INVESTMENT ASSOCIATES INC	+199,859	1,720,165
Mid Arax Advisory Partners	+49,763	54,038
Large OSAIC HOLDINGS, INC.	+15,210	24,398
Mega LPL Financial LLC	+11,110	54,614
Small Logan Stone Capital, LLC	+6,480	16,984

Top Sellers

vs Mar 31, 2026

Institution	Sold	Now Holds
Large Pathstone Holdings, LLC	−169,257	101,525
Mid 1607 Capital Partners, LLC	−121,402	200,178
Mega MORGAN STANLEY	−17,153	77,677
Mid Private Advisor Group, LLC	−10,716	175,625
Mega WELLS FARGO & COMPANY/MN	−7,019	36,061

Top New Positions

vs Mar 31, 2026

Institution	Acquired	Value (USD)
Small Atlas Wealth LLC	57,449	$530,828
Micro Traub Capital Management LLC	16,759	$154,853
Mega CITADEL ADVISORS LLC	11,062	$102,212
Mid WOLVERINE ASSET MANAGEMENT LLC	5,416	$50,043
Micro Paladin Partners, LLC	3,271	$30,224

Top Sold-Out Positions

vs Mar 31, 2026

Institution	Previously Held	Last Value (USD)
Mid Advisors Asset Management, Inc.	350,620	$3,169,604
Mid Independent Advisor Alliance	22,140	$200,145
Small Catalina Capital Group, LLC	18,823	$170,159
Mega Invesco Ltd.	18,471	$166,977
Large COMMONWEALTH EQUITY SERVICES, LLC	11,220	$101,428

Filter: New 7 Increased 18 Reduced 13 Sold out 9 Unchanged 11

Showing 49 of 49

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

SIT INVESTMENT ASSOCIATES INC

$15,894,324

42.54%

1,720,165

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SIT FIXED INCOME ADVISORS II LLC /ADV	1,720,165	$15,894,324	100.0%	Sole

CIBC Bancorp USA Inc.

$5,437,841

14.56%

588,511

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
CIBC Private Wealth Advisors, Inc.	588,511	$5,437,841	100.0%	Defined

1607 Capital Partners, LLC

$1,849,644

4.95%

200,178

Private Advisor Group, LLC

$1,622,775

4.34%

175,625

Fiera Capital Corp

$1,188,938

3.18%

128,673

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Fiera Capital Inc.	128,673	$1,188,938	100.0%	Other

Pathstone Holdings, LLC

$938,091

2.51%

101,525

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
ADVISOR PARTNERS II, LLC	101,525	$938,091	100.0%	Defined

Noble Wealth Management PBC

$927,326

2.48%

100,360

Closed-End Fund Advisors, Inc.

$877,143

2.35%

94,929

D.A. DAVIDSON & CO.

$826,739

2.21%

89,474

MUSTICO FINANCIAL GROUP, INC.

$772,944

2.07%

83,652

MORGAN STANLEY

$717,735

1.92%

77,677

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY SMITH BARNEY LLC	77,677	$717,735	100.0%	Defined

Cambridge Investment Research Advisors, Inc.

$591,036

1.58%

63,965

Atlas Wealth LLC

$530,828

1.42%

57,449

LPL Financial LLC

$504,633

1.35%

54,614

Arax Advisory Partners

$499,311

1.34%

54,038

Baird Financial Group, Inc.

$387,414

1.04%

41,928

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Robert W. Baird & Co. Inc	41,928	$387,414	100.0%	Defined

Sowell Financial Services LLC

$361,034

0.97%

39,073

WELLS FARGO & COMPANY/MN

$333,203

0.89%

36,061

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
WELLS FARGO ADVISORS FINANCIAL NETWORK, LLC	6,486	$59,930	18.0%	Defined
WELLS FARGO CLEARING SERVICES, LLC	29,575	$273,273	82.0%	Defined

Smith Asset Management Co., LLC

$283,834

0.76%

30,718

CLIFFORD SWAN INVESTMENT COUNSEL LLC

$272,580

0.73%

29,500

GUGGENHEIM CAPITAL LLC

$236,876

0.63%

25,636

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GUGGENHEIM FUNDS DISTRIBUTORS, LLC	25,086	$231,794	97.9%	Defined
SECURITY INVESTORS LLC	550	$5,082	2.1%	Defined

OSAIC HOLDINGS, INC.

$225,437

0.60%

24,398

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
OSAIC WEALTH, INC.	4,575	$42,273	18.8%	Defined
CW Advisors, LLC	18,823	$173,924	77.1%	Sole
Osaic Advisory Services, LLC	1,000	$9,240	4.1%	Defined

RIVERNORTH CAPITAL MANAGEMENT, LLC

$208,241

0.56%

22,537

TrueMark Investments, LLC

$208,241

0.56%

22,537

Logan Stone Capital, LLC

$156,932

0.42%

16,984

Traub Capital Management LLC

$154,853

0.41%

16,759

BANK OF AMERICA CORP /DE/

$134,571

0.36%

14,564

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MERRILL LYNCH, PIERCE, FENNER & SMITH INC.	14,564	$134,571	100.0%	Defined

Cetera Investment Advisers

$126,892

0.34%

13,733

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$124,592

0.33%

13,484

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
G1 EXECUTION SERVICES, LLC	13,484	$124,592	100.0%	Other

JAG CAPITAL MANAGEMENT, LLC

$117,348

0.31%

12,700

MOSAIC FAMILY WEALTH PARTNERS, LLC

$109,253

0.29%

11,824

Clear Creek Financial Management, LLC

$102,379

0.27%

11,080

CITADEL ADVISORS LLC

$102,212

0.27%

11,062

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	11,062	$102,212	100.0%	Defined

AlphaCore Capital LLC

$97,944

0.26%

10,600

UBS Group AG

$79,260

0.21%

8,578

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Financial Services Inc	8,578	$79,260	100.0%	Defined

Basepoint Wealth LLC

$59,015

0.16%

6,387

ROYAL BANK OF CANADA

$50,801

0.14%

5,498

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
RBC Capital Markets, LLC	5,498	$50,801	100.0%	Defined

WOLVERINE ASSET MANAGEMENT LLC

$50,043

0.13%

5,416

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Wolverine Holdings, LLC	5,416	$50,043	100.0%	Defined

Thomas J. Herzfeld Advisors, Inc.

$33,993

0.09%

3,679

Paladin Partners, LLC

$30,224

0.08%

3,271

MATHER GROUP, LLC.

$29,919

0.08%

3,238

Rockefeller Capital Management L.P.

$27,720

0.07%

3,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
ROCKEFELLER FINANCIAL LLC	3,000	$27,720	100.0%	Defined

West Branch Capital LLC

$22,194

0.06%

2,402

ACTION POINT FINANCIAL PLANNING, LLC

$15,708

0.04%

1,700

Clear Street Group Inc.

$14,183

0.04%

1,535

Federation des caisses Desjardins du Quebec

$12,012

0.03%

1,300

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Desjardins Securities inc.	1,300	$12,012	100.0%	Defined

BLUE BELL PRIVATE WEALTH MANAGEMENT, LLC

$5,516

0.01%

597

HARBOUR INVESTMENTS, INC.

$3,696

0.01%

400

HIGHLINE WEALTH PARTNERS LLC

$2,864

0.01%

310

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Invesco Investment Advisers LLC	18,471	$166,977	100.0%	Defined

Key facts CIK 882071 CUSIP 33848E106 13F (30d) 12 filings 12 filers Visit website