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Tecogen (TGEN) Institutional Ownership

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$2.30 -0.05 (-2.13%)
Closing price 10/13/2026 04:10 PM Eastern
Extended Trading
$2.28 -0.02 (-0.70%)
As of 07:00 AM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.
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Institutional Ownership Changes (13F Filings) for Tecogen (NYSEAMERICAN:TGEN)

Number of
Institutional Buyers
(last 12 months)
43
Total
Institutional Inflows
(last 12 months)
$2.70M
Number of
Institutional Sellers
(last 12 months)
11
Total
Institutional Outflows
(last 12 months)
$838.47K
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TGEN Institutional Buying and Selling by Quarter

Tecogen Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
9/9/2026Gratia Capital LLC388,660$2.03M1.2%N/A1.287%
9/9/2026Integrated Wealth Concepts LLC112,080$585K0.0%-48.7%0.371%
5/15/2026Granahan Investment Management LLC88,496$227K0.0%-50.2%0.296%
5/14/2026Renaissance Technologies LLC272,300$697K0.0%+401.5%0.911%
5/14/2026Gabelli Funds LLC20,000$51K0.0%N/A0.067%
5/7/2026Dimensional Fund Advisors LP11,163$29K0.0%N/A0.037%
5/1/2026Citizens Financial Group Inc. RI10,000$26K0.0%N/A0.033%
4/24/2026Shikiar Asset Management Inc.17,650$45K0.0%+32.7%0.059%
4/16/2026Thompson Davis & CO. Inc.99,000$253K0.2%-17.8%0.332%
2/18/2026Ark Wealth Advisors LLC14,881$74K0.1%N/A0.050%
2/18/2026XTX Topco Ltd54,763$271K0.0%N/A0.183%
2/18/2026Millennium Management LLC22,507$111K0.0%-53.3%0.075%
2/17/2026Arosa Capital Management LP350,000$1.73M0.2%+21.7%1.173%
2/17/2026Granahan Investment Management LLC177,822$878K0.0%+58.3%0.596%
2/17/2026Royal Bank of Canada85,545$423K0.0%-30.1%0.287%
2/17/2026Mangrove Partners IM LLC61,207$302K0.0%N/A0.205%
2/16/2026OMERS ADMINISTRATION Corp42,000$207K0.0%N/A0.141%
2/13/2026Marshall Wace LLP286,325$1.41M0.0%+483.3%0.959%
2/13/2026Gendell Jeffrey L295,541$1.46M0.0%+21.3%0.990%
2/12/2026Commonwealth Equity Services LLC11,774$58K0.0%N/A0.039%
2/12/2026Renaissance Technologies LLC54,300$268K0.0%-46.9%0.182%
2/11/2026LPL Financial LLC73,793$365K0.0%N/A0.247%
2/11/2026J.W. Cole Advisors Inc.26,300$130K0.0%-16.2%0.088%
2/10/2026Goldman Sachs Group Inc.67,724$335K0.0%-49.0%0.227%
2/9/2026Geode Capital Management LLC177,914$879K0.0%+6.8%0.596%
2/6/2026HighTower Advisors LLC132,665$655K0.0%+110.4%0.444%
2/2/2026Hidden Cove Wealth Management LLC21,087$104K0.1%+50.2%0.071%
1/22/2026Shikiar Asset Management Inc.13,300$66K0.0%-28.1%0.045%
1/20/2026Palisades Investment Partners LLC390,212$1.93M0.7%+3.6%1.307%
1/20/2026Harbor Capital Advisors Inc.40,447$200K0.0%+47.2%0.136%
1/12/2026Thompson Davis & CO. Inc.120,450$595K0.4%+2.1%0.404%
11/18/2025Advisory Services Network LLC5,000$44K0.0%-50.0%0.017%
11/17/2025NewEdge Advisors LLC10,300$91K0.0%N/A0.035%
11/17/2025Millennium Management LLC48,245$425K0.0%N/A0.162%
11/17/2025Integrated Wealth Concepts LLC216,465$1.91M0.0%+22.1%0.729%
11/17/2025Granahan Investment Management LLC112,338$990K0.0%N/A0.378%
11/17/2025Bank of America Corp DE4,836$43K0.0%+4,069.0%0.016%
11/17/2025Bard Associates Inc.690,611$6.08M1.6%+10.7%2.326%
11/17/2025Apis Capital Advisors LLC153,000$1.35M0.3%N/A0.515%
11/14/2025Raymond James Financial Inc.157,888$1.39M0.0%N/A0.532%
The AI Infrastructure Play Kevin O'Leary Is Backing (Ad)

Kevin O'Leary became a strategic investor in a NASDAQ-listed AI infrastructure company, calling it essentially a power company. The firm expects up to 190 MW of Nordic data center capacity approaching ready-for-service status by 2027-2028, as similar capacity has recently been valued at roughly $1.7 million to $2 million per MW annually. Google plans to invest $15 billion in Finland's AI infrastructure, with Cerebras also building a 165 MW facility nearby.tc pixel

See why Kevin O'Leary backed this AI infrastructure strategy
11/14/2025Virtu Financial LLC20,036$177K0.0%N/A0.067%
11/14/2025Two Sigma Investments LP246,705$2.17M0.0%N/A0.831%
11/14/2025Bridgeway Capital Management LLC25,500$225K0.0%N/A0.086%
11/14/2025Portolan Capital Management LLC595,806$5.25M0.3%+28.0%2.007%
11/13/2025Russell Investments Group Ltd.94,696$834K0.0%N/A0.319%
11/12/2025Gamco Investors INC. ET AL40,000$352K0.0%-4.8%0.135%
11/12/2025Evernest Financial Advisors LLC34,150$301K0.1%N/A0.115%
11/7/2025Vanguard Group Inc.870,440$7.67M0.0%+5.4%2.932%
11/7/2025Herald Investment Management Ltd446,078$3.90M0.5%+38.9%1.502%
11/5/2025Thompson Davis & CO. Inc.117,953$1.04M0.6%N/A0.397%
11/5/2025J.W. Cole Advisors Inc.31,400$277K0.0%N/A0.106%
11/3/2025New York State Common Retirement Fund137,200$1.21M0.0%N/A0.462%
10/30/2025Palisades Investment Partners LLC376,594$3.32M1.3%N/A1.268%
10/24/2025Hidden Cove Wealth Management LLC14,042$124K0.1%N/A0.047%
10/23/2025Clear Harbor Asset Management LLC611,600$5.39M0.3%+0.3%2.060%
10/22/2025CoreCap Advisors LLC4,944$44K0.0%N/A0.017%
10/20/2025Calamos Advisors LLC12,479$110K0.0%N/A0.042%
10/15/2025Harbor Capital Advisors Inc.27,481$242K0.0%N/A0.093%
10/15/2025ARS Investment Partners LLC43,173$380K0.0%N/A0.145%
10/14/2025Shikiar Asset Management Inc.18,500$163K0.0%-15.9%0.062%
8/15/2025Gendell Jeffrey L41,700$284K0.0%N/A0.165%
8/13/2025Gamco Investors INC. ET AL42,000$286K0.0%N/A0.166%
8/13/2025Corsair Capital Management L.P.67,760$461K0.1%N/A0.268%
8/12/2025Heron Bay Capital Management37,167$253K0.0%N/A0.147%
8/8/2025Geode Capital Management LLC142,850$971K0.0%N/A0.565%
7/24/2025Shikiar Asset Management Inc.22,000$150K0.0%N/A0.087%
7/22/2025Herald Investment Management Ltd321,078$2.19M0.3%N/A1.271%
7/18/2025PFG Investments LLC62,523$425K0.0%N/A0.247%
7/14/2025Clear Harbor Asset Management LLC610,000$4.15M0.3%N/A2.414%


TGEN Institutional Ownership - Frequently Asked Questions

During the previous two years, 50 institutional investors and hedge funds held shares of Tecogen. The most heavily invested institutionals were Vanguard Group Inc. ($7.67M), Bard Associates Inc. ($6.08M), Clear Harbor Asset Management LLC ($5.39M), Portolan Capital Management LLC ($5.25M), Herald Investment Management Ltd ($3.90M), Two Sigma Investments LP ($2.17M), and Gratia Capital LLC ($2.03M).Learn more on Tecogen's institutional investors.

Of the 47 institutional investors that purchased Tecogen's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Clear Harbor Asset Management LLC ($611.60K), Herald Investment Management Ltd ($446.08K), Palisades Investment Partners LLC ($390.21K), Gratia Capital LLC ($388.66K), Two Sigma Investments LP ($246.71K), Marshall Wace LLP ($237.24K), and Renaissance Technologies LLC ($218K).

Institutional investors have bought a total of 3,525,531 shares in the last 24 months. This purchase volume represents approximately $2.70M in transactions.

Of the 11 institutional investors that sold Tecogen's stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Integrated Wealth Concepts LLC ($106.30K), Granahan Investment Management LLC ($89.33K), Goldman Sachs Group Inc. ($65.04K), Renaissance Technologies LLC ($47.90K), Royal Bank of Canada ($36.84K), Millennium Management LLC ($25.74K), and Thompson Davis & CO. Inc. ($21.45K).

Institutional investors have sold a total of 409,896 shares in the last 24 months. This volume of shares sold represents approximately $838.47K in transactions.


Related Companies

Institutional ownership data for NYSEAMERICAN:TGEN is compiled from quarterly 13F filings submitted to the U.S. Securities and Exchange Commission (SEC), with the most recent received on 9/9/2026. New 13F filings are added each quarter as they're published.
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