QBAK Qualstar

Qualstar, founded in 1984, is a diversified electronics manufacturer specializing in data storage and power supplies. Qualstar is a leading provider of high efficiency and high-density power supplies marketed under the N2Power™ brand, and of data storage systems marketed under the Qualstar™ brand. Our N2Power power supply products provide compact and efficient power conversion for a wide variety of industries and applications including, but not limited to, telecom, networking, broadcast, industrial, lighting, gaming and test equipment. Our Qualstar data storage products are used to provide highly scalable and reliable solutions to store and retrieve very large quantities of electronic data. Qualstar’s products are known throughout the world for high quality and Simply Reliable™ designs that provide years of trouble-free service. More information is available at or or by phone at 805-583-7744.

Company profile

Steven Nathan Bronson
Fiscal year end
IRS number

QBAK stock data



19 Mar 20
21 Apr 21
31 Dec 21
Date Owner Security Transaction Code Indirect 10b5-1 $Price #Shares $Value #Remaining
6 Mar 20 Bronson Steven N Common Stock Option exercise Aquire M No No 0 25,000 0 39,617
6 Mar 20 Bronson Steven N RSU Common Stock Option exercise Dispose M No No 0 25,000 0 25,000
29 Oct 19 Bronson Steven N RSU Common Stock Grant Aquire A No No 0 50,000 0 50,000

Data for the last complete 13F reporting period. To see the most recent changes to ownership, click the ownership history button above.

0.5% owned by funds/institutions
13F holders
Current Prev Q Change
Total holders 2 14 -85.7%
Opened positions 0 1 EXIT
Closed positions 12 6 +100.0%
Increased positions 0 1 EXIT
Reduced positions 1 3 -66.7%
13F shares
Current Prev Q Change
Total value 26K 627K -95.9%
Total shares 10.3K 234.09K -95.6%
Total puts 0 0
Total calls 0 0
Total put/call ratio
Largest owners
Shares Value Change
Wedbush Securities 10.23K $25K -34.8%
Edge Wealth Management 75 $1K 0.0%
Largest transactions
Shares Bought/sold Change
Renaissance Technologies 0 -139.5K EXIT
Dimensional Fund Advisors 0 -25.3K EXIT
Vanguard 0 -23.3K EXIT
NTRS Northern Trust 0 -13.14K EXIT
Geode Capital Management 0 -11.99K EXIT
Wedbush Securities 10.23K -5.47K -34.8%
MS Morgan Stanley 0 -2.4K EXIT
Wealthcare Advisory Partners 0 -1K EXIT
UBS UBS Group AG - Registered Shares 0 -995 EXIT
Advisor 0 -500 EXIT

Financial report summary

Management Discussion
  • The increase in net revenues is attributed to the segment-specific factors as set forth below.
  • Power Supplies – The decrease in sales is attributed to decreased demand from our existing customers. Key customers that incorporate our power supplies have variable life cycles and production demands. As some projects are accelerating and others approach end of life, the timing of new production creates a fluctuation in sales.
  • Storage – For the fiscal year ending December 31, 2019 compared to the prior year period, we experienced revenue growth from the sale of both products and services in our data storage segment. The increase in product revenues is attributed to new vertical channel partnerships focused on media and entertainment, digital forensics, eDiscovery and video surveillance markets. With the release of the LTO8 (Linear Tape-Open) tape technology and the capacity of tape libraries increasing by 100%, the Company has seen a shift in sales to entry level and mid-size libraries. Our Q-Series product portfolio caters to the entry level and mid-size market requirements. Our service revenue increased compared to the previous year, primarily due to the product development service revenue received from our partnership with Sony Imaging Products & Solutions Inc. (“Sony”) for the development of an enterprise class optical disk archive (“ODA”) library offset with a decrease in our technical support revenue. In the quarter ended March 31, 2020, Qualstar provided a notice of termination to Sony and completed its remaining obligations under its contract with Sony.
Content analysis
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