Go Pro
→ Read now. Do not delete. You’ve been warned. (From Porter & Company) (Ad)tc pixel Free QMCO Stock Alerts

Quantum (QMCO) Institutional Ownership

Quantum logo
$10.04 +0.37 (+3.85%)
As of 10:39 AM Eastern
This is a fair market value price provided by Massive. Learn more.
Compare

Institutional Ownership Changes (13F Filings) for Quantum (NASDAQ:QMCO)

Current
Institutional Ownership
Percentage
63.66%
Number of
Institutional Buyers
(last 12 months)
24
Total
Institutional Inflows
(last 12 months)
$6.51M
Number of
Institutional Sellers
(last 12 months)
1
Total
Institutional Outflows
(last 12 months)
$49.31K
Get QMCO Insider Trade Alerts

Want to know when executives and insiders are buying or selling Quantum stock? Sign up for InsiderTrades.com's daily newsletter to get the latest insider transactions delivered to your inbox daily.

Subscribe Now
SMS is currently available in Australia, Belgium, Canada, France, Germany, Ireland, Italy, New Zealand, the Netherlands, Singapore, South Africa, Spain, Switzerland, the United Kingdom, and the United States. By entering your phone number and clicking the sign-up button, you agree to receive periodic text messages from MarketBeat at the phone number you submitted, including texts that may be sent using an automatic telephone dialing system. Message and data rates may apply. Message frequency will vary. Messages will consist of stock alerts, news stories, and partner advertisements/offers. Consent is not a condition of the purchase of any goods or services. Text HELP for help/customer support. Unsubscribe at any time by replying "STOP" to any text message that you receive from MarketBeat or by visiting our mailing preferences page. Read our full terms of service and privacy policy.
Skip Chart & View Institutional Buying and Selling Data

QMCO Institutional Buying and Selling by Quarter

Quantum Major Shareholders & Ownership History

Export
Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
5/15/2026Sona Asset Management US LLC70,092$333K0.0%N/A0.479%
4/29/2026R Squared Ltd12,245$58K0.0%N/A0.084%
2/18/2026XTX Topco Ltd11,948$77K0.0%N/A0.087%
2/18/2026Millennium Management LLC11,244$73K0.0%N/A0.082%
2/18/2026Engineers Gate Manager LP16,407$106K0.0%N/A0.120%
2/17/2026Price T Rowe Associates Inc. MD15,901$103K0.0%N/A0.116%
2/16/2026Barclays PLC14,197$92K0.0%+3,020.2%0.103%
2/13/2026Marshall Wace LLP21,740$140K0.0%N/A0.158%
2/13/2026State Street Corp90,714$585K0.0%+231.7%0.661%
2/11/2026LPL Financial LLC18,364$118K0.0%N/A0.134%
2/9/2026Geode Capital Management LLC156,871$1.01M0.0%+97.5%1.143%
1/29/2026NBC Securities Inc.4,000$26K0.0%N/A0.029%
1/21/2026Flagship Harbor Advisors LLC26,585$171K0.0%+17.1%0.194%
11/17/2025Bank of America Corp DE2,896$29K0.0%+337.5%0.022%
11/13/2025UBS Group AG162,605$1.61M0.0%+170.0%1.214%
11/13/2025BNP Paribas Financial Markets3,461$34K0.0%+322.1%0.026%
11/12/2025Riverview Capital Advisers LLC10,000$99K0.0%N/A0.075%
11/7/2025Vanguard Group Inc.303,597$3.01M0.0%+18.3%2.266%
11/5/2025Flagship Harbor Advisors LLC22,710$225K0.0%N/A0.171%
11/3/2025AlphaQuest LLC35,536$353K0.0%+655.0%0.267%
11/3/2025Hollencrest Capital Management6,560$65K0.0%+228.0%0.049%
8/14/2025Raymond James Financial Inc.4,615$46K0.0%N/A0.066%
8/13/2025Sassicaia Capital Advisers LLC23,267$232K0.1%N/A0.335%
8/13/2025Marshall Wace LLP178,021$1.78M0.0%N/A2.561%
8/8/2025Geode Capital Management LLC69,384$692K0.0%+9.1%0.998%
8/8/2025SBI Securities Co. Ltd.5,636$56K0.0%+99.4%0.081%
7/31/2025AlphaQuest LLC4,707$47K0.0%-51.2%0.068%
7/25/2025Apollon Wealth Management LLC10,714$107K0.0%N/A0.154%
5/15/2025Activest Wealth Management4,283$62K0.0%+428,200.0%0.062%
5/14/2025AlphaQuest LLC9,653$139K0.0%N/A0.139%
5/12/2025Virtu Financial LLC19,721$284K0.0%N/A0.284%
5/5/2025Allianz Asset Management GmbH962,127$13.84M0.0%+87.8%13.844%
2/17/2025Squarepoint Ops LLC9,375$506K0.0%N/A0.163%
2/17/2025Bridgeway Capital Management LLC8,240$444K0.0%N/A0.143%
2/17/2025Bank of America Corp DE75,305$4.06M0.0%+125,408.3%1.307%
2/14/2025Itau Unibanco Holding S.A.56,000$3.02M0.1%N/A0.972%
2/14/2025Jane Street Group LLC33,612$1.81M0.0%N/A0.584%
2/14/2025Schonfeld Strategic Advisors LLC6,400$345K0.0%N/A0.111%
2/14/2025Northern Trust Corp10,407$561K0.0%-7.0%0.181%
2/14/2025Price T Rowe Associates Inc. MD5,030$272K0.0%N/A0.087%
Elon Is Quietly Doubling Down on This Bizarre Asset (Ad)

Yahoo Finance reports this technology 'May Unlock $400 Trillion' - and Bloomberg calls it 'unavoidable.' Elon Musk has been quietly doubling down on it, even attempting to deploy it during his time at DOGE before being shut down. Investing legend Jeff Brown - who identified Bitcoin, Tesla, and Nvidia early - has spent six years analyzing this sector he calls 'W.T.E.' He believes it could be 90 times bigger than AI and 1,900 times bigger than Bitcoin.tc pixel

Click here to see Jeff Brown's full breakdown and how to invest
2/13/2025Marshall Wace LLP6,188$334K0.0%N/A0.107%
2/12/2025Diametric Capital LP12,423$670K0.5%N/A0.213%
2/12/2025CIBC Private Wealth Group LLC11,000$593K0.0%N/A0.191%
2/11/2025LPL Financial LLC7,354$397K0.0%N/A0.128%
2/6/2025SBI Securities Co. Ltd.3,598$194K0.0%N/A0.062%
1/29/2025UNICOM Systems Inc.75,237$4.06M1.0%N/A1.551%
1/21/2025Flagship Harbor Advisors LLC4,194$226K0.0%N/A0.086%
1/15/2025Arkadios Wealth Advisors8,642$466K0.0%N/A0.178%
11/19/2024TCW Group Inc.106,010$371K0.0%-95.0%2.186%
11/15/2024State Street Corp17,114$60K0.0%-95.0%0.357%
10/8/2024Advance Capital Management Inc.17,310$61K0.0%-82.4%0.018%
8/16/2024Pacific Ridge Capital Partners LLC1,264,992$518K0.1%-3.9%1.320%
5/17/2024Tidal Investments LLC44,165$26K0.0%N/A0.046%
5/15/2024Price T Rowe Associates Inc. MD100,600$60K0.0%-42.6%0.106%
5/14/2024B. Riley Financial Inc.695,958$418K0.4%-65.1%0.732%
5/10/2024Acadian Asset Management LLC58,580$34K0.0%-71.4%0.062%
5/9/2024Pacific Ridge Capital Partners LLC1,316,467$783K0.2%-1.7%1.385%
4/19/2024Kovack Advisors Inc.263,901$157K0.0%+33.5%0.278%
2/14/2024Neuberger Berman Group LLC14,819,147$5.17M0.0%-3.3%15.593%
2/12/2024Pacific Ridge Capital Partners LLC1,338,647$467K0.1%-4.5%1.409%
2/9/2024Neuberger Berman Group LLC14,819,147$5.17M0.0%-3.3%15.593%
2/9/2024King Luther Capital Management Corp980,000$342K0.0%-29.2%1.031%
11/13/2023Connor Clark & Lunn Investment Management Ltd.64,066$39K0.0%+151.5%0.067%
11/13/2023B. Riley Financial Inc.1,995,303$1.22M0.4%-18.1%2.099%
11/13/2023Pacific Ridge Capital Partners LLC1,402,456$855K0.2%-2.5%1.476%
8/8/2023B. Riley Financial Inc.2,436,303$2.63M0.7%-19.6%2.580%
8/7/2023Acadian Asset Management LLC401,362$433K0.0%+8.8%0.425%
7/21/2023Kovack Advisors Inc.515,477$557K0.1%+2.2%0.550%
5/17/2023Long Focus Capital Management LLC5,250,364$6.04M0.3%+2.8%4.990%
5/16/2023Solas Capital Management LLC3,728,108$4.29M2.3%-26.7%3.543%
5/15/2023Roumell Asset Management LLC1,687,553$1.94M4.4%-5.2%1.604%
5/12/2023Long Focus Capital Management LLC3,364,033$3.87M0.4%-34.1%3.197%
5/11/2023King Luther Capital Management Corp1,384,915$1.59M0.0%+1.5%1.316%
5/11/2023Acadian Asset Management LLC368,850$422K0.0%+35.1%0.351%
5/9/2023B. Riley Financial Inc.3,030,746$3.49M0.9%-20.8%2.881%
5/4/2023Herald Investment Management Ltd1,000,000$1.13M0.3%+33.9%0.950%
4/21/2023Kovack Advisors Inc.504,477$580K0.1%+43.3%0.479%
3/1/2023B. Riley Financial Inc.3,824,811$4.17M0.9%-4.5%3.635%
2/22/2023Kovack Advisors Inc.352,001$384K0.1%+49.2%0.335%
2/14/2023AWM Investment Company Inc.657,280$716K0.1%-20.9%0.625%
2/14/2023Marathon Capital Management60,000$65K0.0%-81.4%0.057%
2/14/2023Pacific Ridge Capital Partners LLC1,370,413$1.49M0.4%-1.9%1.303%
2/13/2023Neuberger Berman Group LLC15,287,580$16.66M0.0%-3.0%14.531%
2/10/2023Senvest Management LLC2,550,931$2.78M0.1%-54.8%2.425%
2/8/2023Russell Investments Group Ltd.25,476$28K0.0%-83.2%0.024%
2/7/2023B. Riley Financial Inc.3,824,811$4.17M0.9%-4.5%3.635%
11/15/2022Union Square Park Capital Management LLC115,275$124K0.1%-71.2%0.111%
11/15/2022Long Focus Capital Management LLC4,912,602$5.31M0.5%+19.6%4.731%
11/15/2022Marathon Capital Management323,422$349K0.1%-3.2%0.311%
11/14/2022Ergoteles LLC177,559$192K0.0%-33.9%0.171%
Read now. Do not delete. You’ve been warned. (Ad)

Three Nobel Prize Winners expose this once-in-a-generation wealth shift: “Don’t Say I Didn’t Warn You” Porter Stansberry exposes how the convergence of three immense forces is about to rewrite everything about the American way of life: how you work, save, invest… it’s all about to change.tc pixel

Don’t be left behind. Click here now.
11/14/2022Kovack Advisors Inc.235,923$255K0.0%+8.0%0.227%
11/10/2022King Luther Capital Management Corp1,364,915$1.47M0.0%+36.5%1.314%
11/10/2022Senvest Management LLC5,646,026$6.10M0.3%+27.1%5.437%
11/10/2022Pacific Ridge Capital Partners LLC1,396,711$1.51M0.4%-2.9%1.345%
11/9/2022B. Riley Financial Inc.4,005,440$4.33M0.8%-32.4%3.857%
11/7/2022Virtu Financial LLC25,660$28K0.0%N/A0.025%
11/4/2022Russell Investments Group Ltd.151,886$162K0.0%+138.8%0.148%
8/16/2022B. Riley Asset Management LLC772,519$1.10M0.5%+36.4%0.752%
8/15/2022Laurion Capital Management LP24,051$34K0.0%N/A0.023%
8/12/2022AWM Investment Company Inc.830,994$1.18M0.2%+128.7%0.809%


QMCO Institutional Ownership - Frequently Asked Questions

During the previous two years, 40 institutional investors and hedge funds held shares of Quantum. The most heavily invested institutionals were Allianz Asset Management GmbH ($13.84M), UNICOM Systems Inc. ($4.06M), Itau Unibanco Holding S.A. ($3.02M), Vanguard Group Inc. ($3.01M), Jane Street Group LLC ($1.81M), UBS Group AG ($1.61M), and Geode Capital Management LLC ($1.01M).Learn more on Quantum's institutional investors.

63.66% of Quantum's stock is owned by institutional investors. Learn more on QMCO's institutional investor holdings.

Of the 36 institutional investors that purchased Quantum's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Allianz Asset Management GmbH ($449.71K), Marshall Wace LLP ($205.95K), UBS Group AG ($102.38K), Geode Capital Management LLC ($83.25K), Bank of America Corp DE ($77.48K), UNICOM Systems Inc. ($75.24K), and Sona Asset Management US LLC ($70.09K).

Institutional investors have bought a total of 787,878 shares in the last 24 months. This purchase volume represents approximately $6.51M in transactions.

The following institutional investors have sold Quantum stock in the last 24 months: AlphaQuest LLC ($4.95K).

Institutional investors have sold a total of 4,946 shares in the last 24 months. This volume of shares sold represents approximately $49.31K in transactions.


Related Companies

This page (NASDAQ:QMCO) was last updated on 7/14/2026 by MarketBeat.com Staff.
From Our Partners
SPCX Warning - and Worst News for Stocks in 50 Years
Goldman Sachs and Morgan Stanley are now predicting what could be the worst news for the U.S. stock market in ...
TradeSmith | Sponsoredtc pixel
They told you not to miss this one
The largest companies in the SP 500 are now more overvalued relative to fundamentals than they were at the abs...
Thor Metals | Sponsoredtc pixel
Trump's gold order: the announcement they won't put on the front page
On August 15, 1971, Nixon interrupted prime-time television and ended the gold standard in 15 minutes - no deb...
Reagan Gold Group | Sponsoredtc pixel
The 1934 playbook
In 1934, a legal government maneuver transferred billions in wealth overnight. Most Americans never saw it com...
American Alternative | Sponsoredtc pixel
American’s Biggest Threat Is Here
This feels like one of those ''where were you when Kennedy was shot'' moments. It felt like a moment in time, ...
Goldco Direct, LLC | Sponsoredtc pixel
They proved it worked in '76. Then buried it.
In 1976, Chevron tapped an energy source with no fuel costs, no carbon, and no supply chain - then killed the ...
Behind the Markets | Sponsoredtc pixel
Buy this stock today
Marc Chaikin, founder of Chaikin Analytics, is sharing a strategy he calls 'Sell This, Buy That' - a way to mo...
Chaikin Analytics | Sponsoredtc pixel
This Is How Financial Freedom Dies—And Most People Never See It Coming
While the trade war grabs headlines, the Department of Justice has quietly argued in court that cash may not b...
Priority Gold | Sponsoredtc pixel