CSP

CSPI · NASDAQ

$7.35−$0.26 (−3.42%)TodayMarket closed · Oct 20, 4:10 PM ET

Prev close $7.61

Who owns CSPI

Largest institutional holders, from their latest 13F filings

The 10 largest institutions hold 46.0% of CSPI’s shares.

Nerges (Joseph R)14.1%
Dellovo (Victor)8.6%
Visionary Wealth Advisors, LLC8.0%
Vanguard Capital Management, LLC3.5%
Next 6 largest institutions11.8%
All other shareholders54.0%

Top institutional holders of CSPI
Holder	Shares	% of shares	Change, last filing	Filed
Nerges (Joseph R)	1.42M	14.09%	+3.37K	Jun 10, 2026
Dellovo (Victor)	866.61K	8.61%	+35.00K	Mar 27, 2026
Visionary Wealth Advisors, LLC	801.09K	7.96%	+16.28K	Jun 30, 2026
Vanguard Capital Management, LLC	354.15K	3.52%	−276	Jun 30, 2026
Dimensional Fund Advisors, L.P.	351.67K	3.49%	−8.38K	Jun 30, 2026
Renaissance Technologies LLC	267.71K	2.66%	−9.71K	Jun 30, 2026
Levine (Gary W)	216.62K	2.15%	+259	Jul 31, 2026
Southwell (Gary)	135.10K	1.34%	+15.00K	Mar 27, 2026
Newbanks (Mike)	110.61K	1.10%	+10.00K	Dec 19, 2025
Azeri (Ismail)	108.49K	1.08%	+2.50K	May 13, 2026

Largest mutual fund holders

Top mutual fund holders of CSPI
Holder	Shares	% of shares	Change, last filing	Filed
Vanguard Total Stock Market Index Fund	272.26K	2.70%	+0	Jul 31, 2026
DFA US Small Cap Value Portfolio	105.00K	1.04%	−2.40K	May 31, 2026
DFA U.S. Micro Cap Portfolio	96.38K	0.96%	+0	May 31, 2026
Vanguard Extended Market Index Fund	87.68K	0.87%	+14.92K	Jul 31, 2026
DFA US Small Cap Portfolio	50.13K	0.50%	+0	Apr 30, 2026

Insider trades

Form 4 filings by officers, directors and large holders

Over the last 6 months, insiders bought $174.71K (24 trades) of CSPI on the open market, with no sales.

Latest CSPI insider transactions
Insider	Date	Type	Shares	Price	Value
NERGES JOSEPH R	Sep 15, 2026	Buy	472	$7.96	$3.76K
NERGES JOSEPH R	Sep 15, 2026	Buy	28	$7.90	$221
NERGES JOSEPH R	Sep 14, 2026	Buy	500	$7.90	$3.95K
NERGES JOSEPH R	Sep 11, 2026	Buy	1.00K	$7.90	$7.90K
NERGES JOSEPH R	Sep 11, 2026	Buy	1.00K	$7.85	$7.85K
NERGES JOSEPH R	Sep 11, 2026	Buy	1.60K	$7.75	$12.40K
LEVINE GARY W	Jul 31, 2026	Award	259	$7.51	$1.95K
NERGES JOSEPH R	Jun 10, 2026	Buy	100	$8.32	$832
NERGES JOSEPH R	Jun 10, 2026	Buy	71	$8.30	$589
NERGES JOSEPH R	Jun 9, 2026	Buy	199	$8.05	$1.60K

Short interest

Settled Sep 30, 2026

Shares short: 82.98K
Days to cover: 9.73
% of shares outstanding: 0.82%
Average daily volume: 8.53K
Change since last report: +2.3%

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