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Overview
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Business Summary
Filings
Ownership
Valuation
Ownership — CLFD
Institutional Holdings
Insider Transactions
US Institutional Ownership
54.2%
Institution
Shares
Value
Ownership %
Change
Filing Date
BlackRock, Inc.
897.9K
$23.0M
6.59%
-29.2K
2026-03-31
ACK Asset Management LLC
735.2K
$19.0M
5.40%
+110.0K
2026-03-31
MAIRS & POWER INC
731.7K
$19.0M
5.37%
+1.5K
2026-03-31
VANGUARD CAPITAL MANAGEMENT LLC
509.8K
$13.0M
3.74%
--
2026-03-31
VANGUARD PORTFOLIO MANAGEMENT LLC
355.8K
$9.0M
2.61%
--
2026-03-31
DIMENSIONAL FUND ADVISORS LP
353.5K
$9.0M
2.60%
+36.8K
2026-03-31
STATE STREET CORP
322.2K
$8.0M
2.37%
+39.6K
2026-03-31
CITADEL ADVISORS LLC
313.7K
$8.0M
2.30%
+195.2K
2026-03-31
PUNCH & ASSOCIATES INVESTMENT MANAGEMENT, INC.
289.6K
$7.0M
2.13%
+11.5K
2026-03-31
GEODE CAPITAL MANAGEMENT, LLC
285.8K
$7.0M
2.10%
+7.0K
2026-03-31
ROYCE & ASSOCIATES LP
257.0K
$6.0M
1.89%
-122.9K
2026-03-31
Dana Investment Advisors, Inc.
179.4K
$4.0M
1.32%
+49.7K
2026-03-31
MARSHALL WACE, LLP
141.7K
$3.0M
1.04%
-11.0K
2026-03-31
D. E. Shaw & Co., Inc.
141.0K
$3.0M
1.04%
+5.6K
2026-03-31
RENAISSANCE TECHNOLOGIES LLC
136.7K
$3.0M
1.00%
+35.0K
2026-03-31
NORTHERN TRUST CORP
122.0K
$3.0M
0.90%
+3.3K
2026-03-31
BANK OF AMERICA CORP /DE/
115.2K
$3.0M
0.85%
+11.8K
2026-03-31
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
93.7K
$2.0M
0.69%
-3.1K
2026-03-31
Trexquant Investment LP
91.0K
$2.0M
0.67%
-16.5K
2026-03-31
TUDOR INVESTMENT CORP ET AL
83.4K
$2.0M
0.61%
+2.9K
2026-03-31
GOLDMAN SACHS GROUP INC
75.7K
$2.0M
0.56%
+7.6K
2026-03-31
VANGUARD FIDUCIARY TRUST CO
75.0K
$1.0M
0.55%
--
2026-03-31
Russell Investments Group, Ltd.
71.4K
$1.0M
0.52%
-32.3K
2026-03-31
UBS Group AG
70.4K
$1.0M
0.52%
-35.5K
2026-03-31
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
70.3K
$1.0M
0.52%
-1.0K
2026-03-31
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