TGEN — TECOGEN INC NEW
As of Q2 2026, 11 SEC-registered investment managers reported holding TGEN (TECOGEN INC NEW) in their latest 13F filings, with a combined reported value of $9.72M across 1.86M shares. That is +2.7% by share count (+48.16K shares) versus the previous quarter, while reported value moved +109.3%. Ownership is concentrated: the five largest holders account for 90.4% of reported value and the top ten for 100.0%.
Compared with the prior quarter, 3 opened new positions, 5 added to existing stakes, 2 trimmed, 2 exited entirely. 13F holdings are quarter-end snapshots, so these moves reflect positioning as of Q2 2026, not real-time trading.
TGEN is classified in the Industrials sector.
All figures on this page are computed from SEC Form 13F quarterly filings. 13F filers disclose long positions of $100,000 or more within 45 days of quarter end; short positions, options overlays and intra-quarter trades are not included, so treat the numbers as a quarterly snapshot of institutional ownership rather than real-time positioning.
Q2 2026 — 11 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Citadel Advisors history | 585.58K | $3.06M | 0.00% | Add |
| UBS Group AG history | 363.05K | $1.90M | 0.00% | Add |
| Morgan Stanley history | 301.69K | $1.57M | 0.00% | Add |
| BlackRock Inc history | 251.46K | $1.31M | 0.00% | Add |
| Geode Capital Management history | 180.87K | $944.80K | 0.00% | Reduce |
| Goldman Sachs Group history | 69.53K | $362.95K | 0.00% | Add |
| Marshall Wace history | 54.81K | $286.09K | 0.00% | Reduce |
| Northern Trust Corp history | 37.57K | $196.11K | 0.00% | Hold |
| D. E. Shaw & Co history | 15.34K | $80.07K | 0.00% | New |
| Citigroup Inc history | 1.60K | $8.36K | 0.00% | New |
| Fidelity Management & Research (FMR) history | 53 | $279 | 0.00% | New |
Q1 2026 — 10 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Citadel Advisors history | 430.07K | $1.10M | 0.00% | Add |
| UBS Group AG history | 319.84K | $818.78K | 0.00% | Add |
| Renaissance Technologies history | 272.30K | $697.09K | 0.00% | Add |
| Marshall Wace history | 207.47K | $531.11K | 0.00% | Reduce |
| Geode Capital Management history | 192.00K | $491.83K | 0.00% | Add |
| BlackRock Inc history | 184.78K | $473.03K | 0.00% | Reduce |
| Morgan Stanley history | 76.74K | $196.44K | 0.00% | Add |
| Two Sigma Investments history | 67.42K | $172.59K | 0.00% | Reduce |
| Northern Trust Corp history | 37.68K | $96.46K | 0.00% | Hold |
| Goldman Sachs Group history | 25.11K | $64.27K | 0.00% | Reduce |
Q4 2025 — 17 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Vanguard Group history | 871.84K | $4.31M | 0.00% | Hold |
| Marshall Wace history | 286.32K | $1.41M | 0.00% | Add |
| Two Sigma Investments history | 218.63K | $1.08M | 0.00% | Reduce |
| BlackRock Inc history | 191.36K | $945.32K | 0.00% | Add |
| Geode Capital Management history | 177.91K | $879.45K | 0.00% | Add |
| Citadel Advisors history | 153.82K | $759.87K | 0.00% | Reduce |
| UBS Group AG history | 104.96K | $518.50K | 0.00% | Add |
| Point72 Asset Management history | 83.91K | $414.50K | 0.00% | New |
| Morgan Stanley history | 69.98K | $345.69K | 0.00% | Add |
| Goldman Sachs Group history | 67.72K | $334.56K | 0.00% | Reduce |
| Renaissance Technologies history | 54.30K | $268.24K | 0.00% | Reduce |
| Northern Trust Corp history | 37.68K | $186.14K | 0.00% | Add |
| Millennium Management history | 22.51K | $111.19K | 0.00% | Reduce |
| Charles Schwab Investment Management history | 12.00K | $59.28K | 0.00% | Hold |
| Bank of America Corp history | 10.78K | $53.27K | 0.00% | Add |
| Citigroup Inc history | 8.54K | $42.16K | 0.00% | New |
| JPMorgan Chase & Co history | 450 | $2.22K | 0.00% | Hold |
Q3 2025 — 15 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Vanguard Group history | 870.44K | $7.67M | 0.00% | Add |
| Citadel Advisors history | 458.31K | $4.04M | 0.00% | New |
| Two Sigma Investments history | 246.71K | $2.17M | 0.00% | New |
| BlackRock Inc history | 184.78K | $1.63M | 0.00% | Hold |
| Geode Capital Management history | 166.56K | $1.47M | 0.00% | Add |
| Goldman Sachs Group history | 132.76K | $1.17M | 0.00% | New |
| Renaissance Technologies history | 102.20K | $900.38K | 0.00% | New |
| Marshall Wace history | 49.09K | $432.47K | 0.00% | New |
| Millennium Management history | 48.24K | $425.04K | 0.00% | New |
| Northern Trust Corp history | 25.74K | $226.74K | 0.00% | Hold |
| Morgan Stanley history | 22.39K | $197.21K | 0.00% | Add |
| Charles Schwab Investment Management history | 12.00K | $105.72K | 0.00% | New |
| UBS Group AG history | 9.59K | $84.47K | 0.00% | Add |
| Bank of America Corp history | 4.84K | $42.60K | 0.00% | Add |
| JPMorgan Chase & Co history | 450 | $3.96K | 0.00% | Hold |
Q2 2025 — 9 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Vanguard Group history | 825.64K | $5.61M | 0.00% | New |
| BlackRock Inc history | 184.78K | $1.26M | 0.00% | New |
| Geode Capital Management history | 142.85K | $971.38K | 0.00% | New |
| Northern Trust Corp history | 25.74K | $175.01K | 0.00% | New |
| Morgan Stanley history | 600 | $4.08K | 0.00% | New |
| JPMorgan Chase & Co history | 450 | $3.06K | 0.00% | New |
| Bank of America Corp history | 116 | $789 | 0.00% | New |
| UBS Group AG history | 3 | $22 | 0.00% | New |
| Lazard Asset Management history | 1.33K | $9 | 0.00% | New |
New Positions (Q2 2026)
- D. E. Shaw & Co 15.34K sh · $80.07K
- Citigroup Inc 1.60K sh · $8.36K
- Fidelity Management & Research (FMR) 53 sh · $279
Fully Exited (vs previous quarter)
- Renaissance Technologies sold 272.30K sh · $697.09K
- Two Sigma Investments sold 67.42K sh · $172.59K
Fund Position History — shares by quarter (top 20 funds)
| Fund | Q2 2026 | Q1 2026 | Q4 2025 | Q3 2025 | Q2 2025 |
|---|---|---|---|---|---|
| Citadel Advisors | 585.58K | 430.07K | 153.82K | 458.31K | — |
| UBS Group AG | 363.05K | 319.84K | 104.96K | 9.59K | 3 |
| Morgan Stanley | 301.69K | 76.74K | 69.98K | 22.39K | 600 |
| BlackRock Inc | 251.46K | 184.78K | 191.36K | 184.78K | 184.78K |
| Geode Capital Management | 180.87K | 192.00K | 177.91K | 166.56K | 142.85K |
| Goldman Sachs Group | 69.53K | 25.11K | 67.72K | 132.76K | — |
| Marshall Wace | 54.81K | 207.47K | 286.32K | 49.09K | — |
| Northern Trust Corp | 37.57K | 37.68K | 37.68K | 25.74K | 25.74K |
| D. E. Shaw & Co | 15.34K | — | — | — | — |
| Citigroup Inc | 1.60K | — | 8.54K | — | — |
| Fidelity Management & Research (FMR) | 53 | — | — | — | — |
| Point72 Asset Management | — | — | 83.91K | — | — |
| JPMorgan Chase & Co | — | — | 450 | 450 | 450 |
| Renaissance Technologies | — | 272.30K | 54.30K | 102.20K | — |
| Two Sigma Investments | — | 67.42K | 218.63K | 246.71K | — |
| Bank of America Corp | — | — | 10.78K | 4.84K | 116 |
| Millennium Management | — | — | 22.51K | 48.24K | — |
| Charles Schwab Investment Management | — | — | 12.00K | 12.00K | — |
| Vanguard Group | — | — | 871.84K | 870.44K | 825.64K |
| Lazard Asset Management | — | — | — | — | 1.33K |
▲ Bought Low (fund opened/added, stock rose ≥5% next quarter) ▼ Sold High (fund reduced, stock fell ≥5% next quarter)
Drag / scroll to zoom · Default shows the most recent year · Annotations come from quarterly fund actions in 13F filings · Hover a marker for details