Who owns TECOGEN INC.?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of TGEN from SEC Form 13F filings across 69 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 69 institutions disclosed 9.5M shares of TECOGEN INC. worth $49.5M — about 31.6% of shares outstanding; the largest disclosed holder is Portolan Capital Management, LLC. Source: SEC Form 13F filings, parsed by EvidInvest.
69
13F holders
$49.5M
value, 2026 filers
31.6%
of shares outstanding (9.5M sh)
20
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of TGEN's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | Portolan Capital Management, LLC | 1.6M | $8.1M | 0.3% | 5.2% | +249.7% |
| 2 | VANGUARD CAPITAL MANAGEMENT LLC | 788,670 | $4.1M | 0.0% | 2.6% | +2.4% |
| 3 | BARD ASSOCIATES INC | 682,221 | $3.6M | 0.8% | 2.3% | -0.9% |
| 4 | Clear Harbor Asset Management, LLC | 650,000 | $3.4M | 0.2% | 2.2% | 0.0% |
| 5 | HERALD INVESTMENT MANAGEMENT Ltd | 420,000 | $2.2M | 0.3% | 1.4% | 0.0% |
| 6 | GRATIA CAPITAL, LLCNEW | 388,660 | $2.0M | 1.2% | 1.3% | new |
| 7 | UBS Group AG | 363,049 | $1.9M | 0.0% | 1.2% | +13.5% |
| 8 | Meros Investment Management, LP | 353,487 | $1.8M | 0.6% | 1.2% | +21.2% |
| 9 | Palisades Investment Partners, LLC | 323,090 | $1.7M | 0.5% | 1.1% | -3.2% |
| 10 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 315,831 | $1.6M | 0.0% | 1.1% | +188.5% |
| 11 | MORGAN STANLEY | 301,695 | $1.6M | 0.0% | 1% | +293.2% |
| 12 | RAYMOND JAMES FINANCIAL INC | 290,260 | $1.5M | 0.0% | 1% | +56.2% |
| 13 | BlackRock, Inc. | 251,464 | $1.3M | 0.0% | 0.8% | +36.1% |
| 14 | CITADEL ADVISORS LLC | 242,276 | $1.3M | 0.0% | 0.8% | +64.3% |
| 15 | Huntleigh Advisors, Inc.NEW | 220,074 | $1.1M | 0.2% | 0.7% | new |
| 16 | HEARTLAND ADVISORS INCNEW | 182,100 | $950,562 | 0.0% | 0.6% | new |
| 17 | GEODE CAPITAL MANAGEMENT, LLC | 180,870 | $944,802 | 0.0% | 0.6% | -5.8% |
| 18 | THOMPSON DAVIS & CO., INC. | 144,840 | $755,856 | 0.5% | 0.5% | +46.3% |
| 19 | NEW YORK STATE COMMON RETIREMENT FUND | 137,200 | $716,184 | 0.0% | 0.5% | 0.0% |
| 20 | GSA CAPITAL PARTNERS LLP | 126,451 | $660,000 | 0.0% | 0.4% | +34.3% |
| 21 | Arosa Capital Management LP | 125,000 | $652,500 | 0.1% | 0.4% | -64.3% |
| 22 | Integrated Wealth Concepts LLC | 112,080 | $585,058 | 0.0% | 0.4% | -48.7% |
| 23 | Apis Capital Advisors, LLC | 112,000 | $584,640 | 0.1% | 0.4% | +45.5% |
| 24 | VANGUARD FIDUCIARY TRUST CO | 105,956 | $553,090 | 0.0% | 0.4% | +9.9% |
| 25 | GOLDMAN SACHS GROUP INC | 69,530 | $362,946 | 0.0% | 0.2% | +176.9% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.