Clearfield

CLFD · NASDAQ

$29.31−$1.29 (−4.22%)TodayMarket closed · Oct 20, 7:30 PM ET

Prev close $30.60

Who owns CLFD

Largest institutional holders, from their latest 13F filings

The 10 largest institutions hold 46.8% of CLFD’s shares.

Roth (Ronald G)10.7%
BlackRock Institutional Trust Company, N.A.6.4%
ACK Asset Management LLC6.0%
AIGH Capital Management, LLC.5.6%
Next 6 largest institutions18.2%
All other shareholders53.2%

Top institutional holders of CLFD
Holder	Shares	% of shares	Change, last filing	Filed
Roth (Ronald G)	1.46M	10.73%	+2.54K	Feb 27, 2026
BlackRock Institutional Trust Company, N.A.	864.55K	6.36%	+46.27K	Jun 30, 2026
ACK Asset Management LLC	810.20K	5.96%	+75.00K	Jun 30, 2026
AIGH Capital Management, LLC.	762.16K	5.61%	+762.16K	Jun 30, 2026
Beranek (Cheryl P)	501.77K	3.69%	−1.78K	Jul 1, 2026
Vanguard Capital Management, LLC	481.82K	3.55%	−28.02K	Jun 30, 2026
Mairs and Power, Inc.	393.79K	2.90%	−351.19K	Jun 30, 2026
Vanguard Portfolio Management, LLC	371.25K	2.73%	+15.49K	Jun 30, 2026
State Street Investment Management (US)	363.21K	2.67%	+40.96K	Jun 30, 2026
Dimensional Fund Advisors, L.P.	357.10K	2.63%	+3.62K	Jun 30, 2026

Largest mutual fund holders

Top mutual fund holders of CLFD
Holder	Shares	% of shares	Change, last filing	Filed
Vanguard Total Stock Market Index Fund	342.43K	2.52%	+0	Jul 31, 2026
iShares Russell 2000 ETF	296.50K	2.18%	−1.30K	Jul 31, 2026
Vanguard Information Technology Index Fund	295.50K	2.17%	+1.23K	Jul 31, 2026
Mairs & Power Fund	197.48K	1.45%	−230.00K	Jun 30, 2026
Mairs and Power Small Cap Fund	164.13K	1.21%	−55.57K	Jun 30, 2026

Insider trades

Form 4 filings by officers, directors and large holders

Over the last 6 months, insiders sold $1.04M (7 trades) of CLFD on the open market, with no buys.

Latest CLFD insider transactions
Insider	Date	Type	Shares	Price	Value
Beranek Cheryl	Jul 1, 2026	Sale	1.78K	$40.06	$71.23K
Khemakhem Anis	Jun 30, 2026	Award	158	$24.78	$3.92K
Hill John P	Jun 30, 2026	Award	459	$24.78	$11.37K
Beranek Cheryl	Jun 30, 2026	Award	210	$24.78	$5.20K
HERZOG DANIEL R	Jun 30, 2026	Award	752	$24.78	$18.63K
Khemakhem Anis	Jun 9, 2026	Sale	1.68K	$39.90	$67.19K
Beranek Cheryl	Jun 1, 2026	Sale	7.50K	$46.92	$351.90K
Beranek Cheryl	May 27, 2026	Sale	2.50K	$50.00	$125.00K
Jones Walter Louis JR	May 11, 2026	Sale	2.39K	$46.05	$110.11K
Beranek Cheryl	May 11, 2026	Sale	2.50K	$45.02	$112.55K

Short interest

Settled Sep 30, 2026

Shares short: 1.30M
Days to cover: 9.24
% of shares outstanding: 9.60%
Average daily volume: 141.20K
Change since last report: −5.0%

Information on this page is provided for informational purposes only and is not a recommendation to buy, sell or hold any security. Investing involves risk, including possible loss of principal. Market data is delayed at least 15 minutes and is provided without warranty. Analyst ratings, price targets and company data come from third-party sources. Past performance does not guarantee future results.