NORTH BILLERICA, MA
TECOGEN INC.TGEN— Latest position per institution from SEC 13F filings
15
Institutional holders
7.75M
Total shares held
21.91M
Estimated value
387.39K
Avg. position size
VANGUARD GROUP INC
CIK 102909
Shares
871.84K
Value
4.31M
Filed
Dec 31, 2025
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
769.96K
Value
1.97M
Filed
Mar 31, 2026
BARD ASSOCIATES INC
CIK 1105907
Shares
688.31K
Value
1.76M
Filed
Mar 31, 2026
CLEAR HARBOR ASSET MANAGEMENT, LLC
CIK 1511857
Shares
650K
Value
1.66M
Filed
Mar 31, 2026
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 1446194
Shares
481.16K
Value
1.23M
Filed
Mar 31, 2026
PORTOLAN CAPITAL MANAGEMENT, LLC
CIK 1350290
Shares
443.56K
Value
1.14M
Filed
Mar 31, 2026
CITADEL ADVISORS LLC
CIK 1423053
Shares
430.07K
Value
1.10M
Filed
Mar 31, 2026
HERALD INVESTMENT MANAGEMENT LTD
CIK 1512022
Shares
420K
Value
1.08M
Filed
Mar 31, 2026
AROSA CAPITAL MANAGEMENT LP
CIK 1596053
Shares
350K
Value
896K
Filed
Mar 31, 2026
PALISADES INVESTMENT PARTNERS, LLC
CIK 1427373
Shares
333.91K
Value
854.80K
Filed
Mar 31, 2026
UBS GROUP AG
CIK 1610520
Shares
319.84K
Value
818.78K
Filed
Mar 31, 2026
MEROS INVESTMENT MANAGEMENT, LP
CIK 1911372
Shares
291.70K
Value
746.76K
Filed
Mar 31, 2026
RENAISSANCE TECHNOLOGIES LLC
CIK 1037389
Shares
272.30K
Value
697.09K
Filed
Mar 31, 2026
GENDELL JEFFREY L
CIK 1056581
Shares
245.54K
Value
628.59K
Filed
Mar 31, 2026
INTEGRATED WEALTH CONCEPTS LLC
CIK 1737109
Shares
218.38K
Value
559.05K
Filed
Mar 31, 2026
MARSHALL WACE, LLP
CIK 1318757
Shares
207.47K
Value
531.11K
Filed
Mar 31, 2026
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
192K
Value
491.83K
Filed
Mar 31, 2026
JANE STREET GROUP, LLC
CIK 1595888
Shares
191.14K
Value
489.32K
Filed
Mar 31, 2026
RAYMOND JAMES FINANCIAL INC
CIK 720005
Shares
185.79K
Value
475.63K
Filed
Mar 31, 2026
BLACKROCK, INC.
CIK 2012383
Shares
184.78K
Value
473.03K
Filed
Mar 31, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | VANGUARD GROUP INC | 102909 | 871.84K | 4.31M | Dec 31, 2025 |
| 2 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 769.96K | 1.97M | Mar 31, 2026 |
| 3 | BARD ASSOCIATES INC | 1105907 | 688.31K | 1.76M | Mar 31, 2026 |
| 4 | CLEAR HARBOR ASSET MANAGEMENT, LLC | 1511857 | 650K | 1.66M | Mar 31, 2026 |
| 5 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 1446194 | 481.16K | 1.23M | Mar 31, 2026 |
| 6 | PORTOLAN CAPITAL MANAGEMENT, LLC | 1350290 | 443.56K | 1.14M | Mar 31, 2026 |
| 7 | CITADEL ADVISORS LLC | 1423053 | 430.07K | 1.10M | Mar 31, 2026 |
| 8 | HERALD INVESTMENT MANAGEMENT LTD | 1512022 | 420K | 1.08M | Mar 31, 2026 |
| 9 | AROSA CAPITAL MANAGEMENT LP | 1596053 | 350K | 896K | Mar 31, 2026 |
| 10 | PALISADES INVESTMENT PARTNERS, LLC | 1427373 | 333.91K | 854.80K | Mar 31, 2026 |
| 11 | UBS GROUP AG | 1610520 | 319.84K | 818.78K | Mar 31, 2026 |
| 12 | MEROS INVESTMENT MANAGEMENT, LP | 1911372 | 291.70K | 746.76K | Mar 31, 2026 |
| 13 | RENAISSANCE TECHNOLOGIES LLC | 1037389 | 272.30K | 697.09K | Mar 31, 2026 |
| 14 | GENDELL JEFFREY L | 1056581 | 245.54K | 628.59K | Mar 31, 2026 |
| 15 | INTEGRATED WEALTH CONCEPTS LLC | 1737109 | 218.38K | 559.05K | Mar 31, 2026 |
| 16 | MARSHALL WACE, LLP | 1318757 | 207.47K | 531.11K | Mar 31, 2026 |
| 17 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 192K | 491.83K | Mar 31, 2026 |
| 18 | JANE STREET GROUP, LLC | 1595888 | 191.14K | 489.32K | Mar 31, 2026 |
| 19 | RAYMOND JAMES FINANCIAL INC | 720005 | 185.79K | 475.63K | Mar 31, 2026 |
| 20 | BLACKROCK, INC. | 2012383 | 184.78K | 473.03K | Mar 31, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.