SIC 3661
Telephone & Telegraph Apparatus
9 companies · 0 with disclosed financials
Total revenue (latest)
—
Total net income
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Avg net margin
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Median net margin
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5-year industry trend
Total revenue summed across 9 companies in the most recent fiscal year. Median margin is the cross-sectional median per year.
Largest by revenue
- 1CIENCIENA CORP
$82.54B cap
—
revenue
- 2CLFDClearfield, Inc.
$581.4M cap
—
revenue
- 3SONMDNA X, Inc.
$5.9M cap
—
revenue
- 4CLROCLEARONE INC
$8.4M cap
—
revenue
- 5VPLMVoip-pal.com Inc
$36.1M cap
—
revenue
- 6FIEEFiEE, Inc.
$51.0M cap
—
revenue
- 7FKWLFRANKLIN WIRELESS CORP
$35.7M cap
—
revenue
- 8FNFabrinet
$25.22B cap
—
revenue
- 9ADTNADTRAN Holdings, Inc.
$1.27B cap
—
revenue
Insider activity in this industry · last 12 months
Insider buying
$5.4M
Insider selling
$128.1M
Net flow
−$122.8M
Distinct insiders
33
Open-market trades summed across all 4 companies in the industry where insiders bought. Sales counted across all companies regardless. Filed via SEC Form 4.
Recently filed in this industry
Related industries
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SIC 3674 · 22 cos
Communications Equipment, NEC
SIC 3669 · 6 cos
Miscellaneous Electrical Machinery, Equipment & Supplies
SIC 3690 · 5 cos
Electronic Components, NEC
SIC 3679 · 5 cos
Printed Circuit Boards
SIC 3672 · 4 cos
Electrical Industrial Apparatus
SIC 3620 · 2 cos
Household Appliances
SIC 3630 · 2 cos
Motors & Generators
SIC 3621 · 1 cos
About the Telephone & Telegraph Apparatus industry on ActaClear
ActaClear tracks 9 US-listed public companies classified under SEC SIC code 3661 (Telephone & Telegraph Apparatus).
Every name on this page links to a full company dashboard with 5-year SEC financials, live market data, ratios, AI-summarised business description, insider transactions, and institutional ownership. Data is sourced directly from SEC EDGAR XBRL filings and refreshed continuously.