Zoom Telephonics (OTCMKTS:ZMTP) and Sunworks (NASDAQ:SUNW) are both small-cap computer and technology companies, but which is the better investment? We will contrast the two businesses based on the strength of their profitability, analyst recommendations, earnings, valuation, institutional ownership, risk and dividends.


This table compares Zoom Telephonics and Sunworks’ net margins, return on equity and return on assets.

Net Margins Return on Equity Return on Assets
Zoom Telephonics 1.08% 31.10% 11.39%
Sunworks -10.32% -51.82% -18.94%

Volatility and Risk

Zoom Telephonics has a beta of -1.93, suggesting that its share price is 293% less volatile than the S&P 500. Comparatively, Sunworks has a beta of 1.43, suggesting that its share price is 43% more volatile than the S&P 500.

Earnings & Valuation

This table compares Zoom Telephonics and Sunworks’ top-line revenue, earnings per share and valuation.

Gross Revenue Price/Sales Ratio Net Income Earnings Per Share Price/Earnings Ratio
Zoom Telephonics $29.42 million 0.82 -$1.36 million N/A N/A
Sunworks $77.45 million 0.12 -$7.22 million ($0.32) -1.10

Zoom Telephonics has higher earnings, but lower revenue than Sunworks.

Analyst Ratings

This is a summary of current recommendations and price targets for Zoom Telephonics and Sunworks, as provided by MarketBeat.

Sell Ratings Hold Ratings Buy Ratings Strong Buy Ratings Rating Score
Zoom Telephonics 0 0 0 0 N/A
Sunworks 0 1 0 0 2.00

Institutional & Insider Ownership

7.3% of Sunworks shares are held by institutional investors. 16.0% of Zoom Telephonics shares are held by insiders. Comparatively, 1.9% of Sunworks shares are held by insiders. Strong institutional ownership is an indication that endowments, hedge funds and large money managers believe a stock will outperform the market over the long term.


Zoom Telephonics beats Sunworks on 7 of the 10 factors compared between the two stocks.

About Zoom Telephonics

Zoom Telephonics, Inc. designs, produces, markets, sells, and supports Internet access and other communications-related products in North America and internationally. It provides cable modems, asymmetrical digital subscriber line modems, mobile broadband modems and routers, dial-up modems, local area network products, mobile broadband sensors, embedded modems, ISDN modems, telephone dialers, wireless and wired networking equipment, phone jacks and AC power adapters, and language-related specifics. The company sells its products through retailers and distributors, Internet and telephone service providers, value-added resellers, PC system integrators, and original equipment manufacturers, as well as through a direct sales force and independent sales agents. Zoom Telephonics, Inc. was founded in 1977 and is headquartered in Boston, Massachusetts.

About Sunworks

Sunworks, Inc., through its subsidiaries, provides photo voltaic based power systems for the agricultural, commercial, industrial, and residential markets in California, Nevada, Oregon, and Washington, the United States. The company also designs, arranges, finances, integrates, installs, and manages systems ranging in size from 2 kilowatt for residential loads to multi megawatt systems for larger commercial projects. In addition, it offers a range of installation services, including design, system engineering, procurement, permitting, construction, grid connection, warranty, system monitoring, and maintenance services to its solar energy customers. The company was formerly known as Solar3D, Inc. and changed its name to Sunworks, Inc. in March 2016. Sunworks, Inc. was founded in 2002 and is headquartered in Roseville, California.

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