# TECOGEN INC NEW (TGEN)

> Institutional ownership reported to the SEC as of Q2 2026, from Form 13F filings. Source: https://holderbook.com/stocks/TGEN/

- Reporting holders: 70
- Reported value: $62.9M
- Shares held by institutions: 9,904,881 of 30,187,822 outstanding
- Held through calls: 12.4%
- Held through puts: 5.4%

A 13F reports long US equity positions only. Shorts, bonds, foreign listings and cash are not visible here, and positions are disclosed up to 45 days after the quarter ends.

## Largest holders

| Manager | Value | Shares | Share of their book | Quarters held |
|---|---|---|---|---|
| [Portolan Capital Management, LLC](https://holderbook.com/funds/1350290-portolan-capital-management-llc/) | $8.1M | 1,551,113 | 0.3% | 5 |
| [CITADEL ADVISORS LLC](https://holderbook.com/funds/1423053-citadel-advisors-llc/) | $6.1M | 484,552 | 0.0% | 4 |
| [VANGUARD CAPITAL MANAGEMENT LLC](https://holderbook.com/funds/2100119-vanguard-capital-management-llc/) | $4.1M | 788,670 | 0.0% | 2 |
| [BARD ASSOCIATES INC](https://holderbook.com/funds/1105907-bard-associates-inc/) | $3.6M | 682,221 | 0.8% | 5 |
| [Clear Harbor Asset Management, LLC](https://holderbook.com/funds/1511857-clear-harbor-asset-management-llc/) | $3.4M | 650,000 | 0.2% | 5 |
| [SUSQUEHANNA INTERNATIONAL GROUP, LLP](https://holderbook.com/funds/1446194-susquehanna-international-group-llp/) | $2.8M | 315,831 | 0.0% | 4 |
| [PEAK6 LLC](https://holderbook.com/funds/1389958-peak6-llc/) | $2.5M | 0 | 0.0% | 1 |
| [JANE STREET GROUP, LLC](https://holderbook.com/funds/1595888-jane-street-group-llc/) | $2.3M | 49,087 | 0.0% | 4 |
| [HERALD INVESTMENT MANAGEMENT Ltd](https://holderbook.com/funds/1512022-herald-investment-management-ltd/) | $2.2M | 420,000 | 0.3% | 5 |
| [GRATIA CAPITAL, LLC](https://holderbook.com/funds/1599793-gratia-capital-llc/) | $2.0M | 388,660 | 1.2% | 1 |
| [UBS Group AG](https://holderbook.com/funds/1610520-ubs-group-ag/) | $1.9M | 363,049 | 0.0% | 5 |
| [Meros Investment Management, LP](https://holderbook.com/funds/1911372-meros-investment-management-lp/) | $1.8M | 353,487 | 0.6% | 2 |
| [Palisades Investment Partners, LLC](https://holderbook.com/funds/1427373-palisades-investment-partners-llc/) | $1.7M | 323,090 | 0.5% | 4 |
| [MORGAN STANLEY](https://holderbook.com/funds/895421-morgan-stanley/) | $1.6M | 301,695 | 0.0% | 5 |
| [RAYMOND JAMES FINANCIAL INC](https://holderbook.com/funds/720005-raymond-james-financial-inc/) | $1.5M | 290,260 | 0.0% | 4 |
| [BlackRock, Inc.](https://holderbook.com/funds/2012383-blackrock-inc/) | $1.3M | 251,464 | 0.0% | 5 |
| [IMC-Chicago, LLC](https://holderbook.com/funds/1452861-imc-chicago-llc/) | $1.2M | 61,800 | 0.0% | 3 |
| [Integrated Wealth Concepts LLC](https://holderbook.com/funds/1737109-integrated-wealth-concepts-llc/) | $1.2M | 224,160 | 0.0% | 2 |
| [Huntleigh Advisors, Inc.](https://holderbook.com/funds/1367653-huntleigh-advisors-inc/) | $1.1M | 220,074 | 0.2% | 1 |
| [HEARTLAND ADVISORS INC](https://holderbook.com/funds/937394-heartland-advisors-inc/) | $950.6K | 182,100 | 0.0% | 1 |
| [GEODE CAPITAL MANAGEMENT, LLC](https://holderbook.com/funds/1214717-geode-capital-management-llc/) | $944.8K | 180,870 | 0.0% | 5 |
| [GROUP ONE TRADING LLC](https://holderbook.com/funds/932540-group-one-trading-llc/) | $856.5K | 49,872 | 0.0% | 4 |
| [THOMPSON DAVIS & CO., INC.](https://holderbook.com/funds/1017284-thompson-davis-co-inc/) | $755.9K | 144,840 | 0.5% | 4 |
| [STATE STREET CORP](https://holderbook.com/funds/93751-state-street-corp/) | $722.7K | 138,452 | 0.0% | 5 |
| [NEW YORK STATE COMMON RETIREMENT FUND](https://holderbook.com/funds/810265-new-york-state-common-retirement-fund/) | $716.2K | 137,200 | 0.0% | 4 |

## Quarter by quarter

| Quarter | Holders | Reported value |
|---|---|---|
| Q2 2026 | 70 | $62.9M |
| Q1 2026 | 61 | $22.2M |
| Q4 2025 | 67 | $41.8M |
| Q3 2025 | 71 | $77.6M |
| Q2 2025 | 30 | $26.8M |
| Q1 2025 | 1 | $28.0K |
| Q4 2023 | 1 | $260.1K |
| Q3 2023 | 1 | $272.9K |
| Q2 2023 | 1 | $320.9K |
| Q1 2023 | 1 | $381.3K |
| Q4 2022 | 1 | $401.0K |
| Q3 2022 | 1 | $304.0K |