• $45.5M
    Market Cap
  • -3.64%
    1-Year Change
  • Scientific & Technical Instruments
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
GAMCO INVESTORS, INC. ET AL
11.83%
670,781
+18,305 (+2.73%)
Mar 31, 2026
BARD ASSOCIATES INC
8.64%
489,857
-1,975 (-0.40%)
Mar 31, 2026
RENAISSANCE TECHNOLOGIES LLC
2.94%
166,594
+5,773 (+3.47%)
Mar 31, 2026
FULL VALUE ADVISORS, LLC
2.70%
153,134
-31,756 (-20.74%)
Sep 30, 2009
VANGUARD GROUP INC
2.39%
135,677
+478 (+0.35%)
Dec 31, 2025
N/A
2.03%
114,994
+114,994 (+100.00%)
Mar 31, 2026
DIMENSIONAL FUND ADVISORS LP
1.75%
99,240
0 (0.00%)
Mar 31, 2026

Current Ownership Distribution

  • Institutions27.6M (85.40%)
  • Mutual Funds3.3M (10.14%)
  • Insiders1.4M (4.46%)
  • Other0 (0.00%)

Insider Transactions

  • 4.46% (1.4M)
    Current InsiderOwnership (%, shares)
  • 0
    Number of InsiderBuying (last 12 months)
  • $0.00
    Amount of InsiderBuying (last 12 months)
  • 1
    Number of InsiderSelling (last 12 months)
  • $7,799.81
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
GABELLI MARIO J
Sell
Jun 15, 2026
$124.10
10,342
$0.01
660,326
Kilrain Colin J.
Award
Mar 26, 2026
$0.00
2,067
$0.00
2,067
DeRemer Darlene T.
Award
Mar 26, 2026
$0.00
2,067
$0.00
7,249
Aslansan Kaan Kerem
Award
Mar 26, 2026
$0.00
2,067
$0.00
7,249
Kalha Manjit
Award
Mar 26, 2026
$0.00
2,067
$0.00
32,060
Huvane Patrick
EVP - Business Development
In Kind
Jan 21, 2026
$9,308.25
1,379
$6.75
8,621
Hayden Tiffany Renee
Vice President
Award
Jan 16, 2026
$0.00
10,000
$0.00
10,000
Lamb Jason D
Chief Executive Officer
Award
Jan 16, 2026
$0.00
50,000
$0.00
50,000
Biles Linda M
Vice President / Controller
Award
Jan 16, 2026
$0.00
10,000
$0.00
18,820
Huvane Patrick
EVP - Business Development
Award
Jan 16, 2026
$0.00
10,000
$0.00
10,000
GABELLI MARIO J
Exempt
Jan 16, 2026
$807,466.75
169,993
$4.75
670,668
Lamb Jason D
Chief Executive Officer
Award
Jan 16, 2026
$0.00
50,000
$0.00
50,000
Kalha Manjit
Award
Mar 25, 2025
$0.00
2,308
$0.00
29,993
Foufas Timothy
Co-Chief Executive Officer
Award
Mar 25, 2025
$0.00
2,308
$0.00
43,724
Francois Herve
Award
Mar 25, 2025
$0.00
2,308
$0.00
5,182
GABELLI MARC
Award
Mar 25, 2025
$0.00
2,308
$0.00
85,762
Aslansan Kaan Kerem
Award
Mar 25, 2025
$0.00
2,308
$0.00
5,182
DeRemer Darlene T.
Award
Mar 25, 2025
$0.00
2,308
$0.00
5,182
FERRANTINO MICHAEL J JR
Award
Mar 25, 2025
$0.00
2,308
$0.00
31,903