RDIB · Reading International Inc

$9.20 At close · Aug 17

Market Cap

$39.60M

22.89M

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.

Quarter:

Holders: 34

Total Value: $10,675,858

Total Shares: 8,506,678

Institutional Ownership Trend

26 quarters

Superinvestors Holding RDIB

All superinvestors →

Mario Gabelli $462,208 Stephen Yacktman $339,200

Holder Concentration

Across 34 13F filers · Δ vs Mar 31, 2026

Top Holder

30.5%

+4.7 pts

Top 5

80.1%

+8.7 pts

Top 10

94.3%

+4.0 pts

HHI

1,758

Moderately concentrated+381

Quarterly Activity

vs Mar 31, 2026

New

Increased

Decreased

Sold Out

Unchanged

Holder count: 0

Institutional value: -3.1%

Shares held: -0.9%

Top Buyers

vs Mar 31, 2026

Institution	Added	Now Holds	Open
Mid Krilogy Financial LLC	+28,569	2,540,688
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP	+18,204	48,469

Top Sellers

vs Mar 31, 2026

Institution	Sold	Now Holds
Mega CITADEL ADVISORS LLC	−46,410	23,556
Small WITTENBERG INVESTMENT MANAGEMENT, INC.	−14,317	971,828
Mega GEODE CAPITAL MANAGEMENT, LLC	−10,839	206,979
Large RENAISSANCE TECHNOLOGIES LLC	−9,600	502,390
Mega WELLS FARGO & COMPANY/MN	−4,581	215,522

Top New Positions

vs Mar 31, 2026

Institution	Acquired	Value (USD)	Open
Micro Liberty Atlantic Advisors LLC	10,000	$12,800
Mega BARCLAYS PLC	70	$89

Top Sold-Out Positions

vs Mar 31, 2026

Institution	Previously Held	Last Value (USD)	Open
Micro Contango Wealth Management LLC	18,500	$20,905
Mega FMR LLC	18,373	$20,761

Filter: New 2 Increased 2 Reduced 15 Sold out 2 Unchanged 15

Showing 42 of 42

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

Krilogy Financial LLC

$3,252,080

30.46%

2,540,688

Nantahala Capital Management, LLC

$2,458,992

23.03%

1,921,088

WITTENBERG INVESTMENT MANAGEMENT, INC.

$1,243,939

11.65%

971,828

VANGUARD CAPITAL MANAGEMENT LLC

$951,466

8.91%

743,333

RENAISSANCE TECHNOLOGIES LLC

$643,059

6.02%

502,390

GAMCO INVESTORS, INC. ET AL

$462,208

4.33%

361,100

YACKTMAN ASSET MANAGEMENT LP

$339,200

3.18%

265,000

WELLS FARGO & COMPANY/MN

$275,868

2.58%

215,522

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

Manager	Shares	Value (USD)	% of position	Discretion
WELLS FARGO CLEARING SERVICES, LLC	215,522	$275,868	100.0%	Defined

GEODE CAPITAL MANAGEMENT, LLC

$264,932

2.48%

206,979

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

Manager	Shares	Value (USD)	% of position	Discretion
GEODE CAPITAL MANAGEMENT TRUST COMPANY, LLC	56,557	$72,392	27.3%	Defined
Held directly	150,422	$192,540	72.7%	Defined

Teton Advisors, LLC

$177,920

1.67%

139,000

GABELLI FUNDS LLC

$111,360

1.04%

87,000

VANGUARD FIDUCIARY TRUST CO

$105,130

0.98%

82,133

BlackRock, Inc.

$66,182

0.62%

51,705

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

Manager	Shares	Value (USD)	% of position	Discretion
BlackRock Institutional Trust Company, N.A.	51,705	$66,182	100.0%	Sole

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$62,040

0.58%

48,469

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	48,469	$62,040	100.0%	Other

STATE STREET CORP

$58,795

0.55%

45,934

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

Manager	Shares	Value (USD)	% of position	Discretion
SSGA FUNDS MANAGEMENT, INC. joint	45,934	$58,795	100.0%	Defined

NORTHERN TRUST CORP

$46,409

0.43%

36,258

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

Manager	Shares	Value (USD)	% of position	Discretion
NORTHERN TRUST CO joint	36,258	$46,409	100.0%	Defined

ELKHORN PARTNERS LIMITED PARTNERSHIP

$33,280

0.31%

26,000

CITADEL ADVISORS LLC

$30,151

0.28%

23,556

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	23,556	$30,151	100.0%	Defined

Mraz, Amerine & Associates, Inc.

$24,128

0.23%

18,850

XTX Topco Ltd

$20,401

0.19%

15,939

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

Manager	Shares	Value (USD)	% of position	Discretion
XTX EXECUTION SERVICES LLC joint	15,939	$20,401	100.0%	Defined

Arax Advisory Partners

$18,949

0.18%

14,804

Liberty Atlantic Advisors LLC

$12,800

0.12%

10,000

UBS Group AG

$8,417

0.08%

6,576

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

Manager	Shares	Value (USD)	% of position	Discretion
UBS AG	6,576	$8,417	100.0%	Defined

Vanguard Global Advisers, LLC

$5,006

0.05%

3,911

CALDWELL SUTTER CAPITAL, INC.

$1,280

0.01%

1,000

Tower Research Capital LLC (TRC)

$730

0.01%

571

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

Manager	Shares	Value (USD)	% of position	Discretion
Latour Trading LLC (Latour)	571	$730	100.0%	Defined

MORGAN STANLEY

$602

0.01%

471

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	471	$602	100.0%	Defined

ROYAL BANK OF CANADA

$400

0.00%

313

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	313	$400	100.0%	Defined

BARCLAYS PLC

$89

0.00%

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

Manager	Shares	Value (USD)	% of position	Discretion
BARCLAYS CAPITAL INC.	70	$89	100.0%	Defined

JPMORGAN CHASE & CO

$44

0.00%

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

Manager	Shares	Value (USD)	% of position	Discretion
J.P. Morgan Securities plc	35	$44	100.0%	Defined

SBI Securities Co., Ltd.

0.00%

Teton Advisors, LLC RDIB

—

74,360

Vanguard Global Advisers, LLC RDIB

—

263

GAMCO INVESTORS, INC. ET AL RDIB

—

34,000

GABELLI FUNDS LLC RDIB

—

14,700

UBS Group AG RDIB

—

1,159

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

Manager	Shares	Value (USD)	% of position	Discretion
UBS AG	975	$0	—	Defined
UBS Securities LLC	184	$0	—	Defined

VANGUARD CAPITAL MANAGEMENT LLC RDIB

—

14,204

VANGUARD FIDUCIARY TRUST CO RDIB

—

1,222

INVESTMENT COUNSEL CO OF NEVADA RDIB

—

3,696

DIMENSIONAL FUND ADVISORS LP RDIB

—

17,849

CITIGROUP INC RDIB

—

4,191

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

Manager	Shares	Value (USD)	% of position	Discretion
Citigroup Financial Products Inc. joint	4,191	$0	—	Defined

Tower Research Capital LLC (TRC) RDIB

—

510

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

Manager	Shares	Value (USD)	% of position	Discretion
Latour Trading LLC (Latour)	510	$0	—	Defined

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

Manager	Shares	Value (USD)	% of position	Discretion
STRATEGIC ADVISERS LLC	18,373	$20,761	100.0%	Defined

Key facts CIK 716634 CUSIP 755408101 13F (30d) 33 filings 33 filers Visit website Investor relations