Vanguard Group
TGEN

Vanguard Group’s Tecogen Inc TGEN Stock Holding History

Vanguard Group’s Portfolio TGEN Stock Details TGEN Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q4 		$4.31M Buy
871,840
+1,400
+0.2% +$10.5K ﹤0.01% 3311
2025
Q3 		$7.67M Buy
870,440
+44,797
+5% +$359K ﹤0.01% 3120
2025
Q2 		$5.61M Buy
+825,643
New +$4.29M ﹤0.01% 3175
2020
Q2 		– Sell
-288,042
Closed -$268K – 4102
2020
Q1 		$268K Sell
288,042
-113,002
-28% -$211K ﹤0.01% 3818
2019
Q4 		$850K Sell
401,044
-71,115
-15% -$170K ﹤0.01% 3675
2019
Q3 		$1.12M Buy
472,159
+34,500
+8% +$103K ﹤0.01% 3622
2019
Q2 		$1.64M Buy
437,659
+13,440
+3% +$49.6K ﹤0.01% 3529
2019
Q1 		$1.69M Buy
424,219
+2,100
+0.5% +$8.07K ﹤0.01% 3503
2018
Q4 		$1.53M Buy
422,119
+12,742
+3% +$45K ﹤0.01% 3451
2018
Q3 		$1.29M Hold
409,377
– – ﹤0.01% 3657
2018
Q2 		$1.52M Buy
409,377
+11,649
+3% +$40.1K ﹤0.01% 3573
2018
Q1 		$1.14M Buy
397,728
+6,304
+2% +$15.3K ﹤0.01% 3622
2017
Q4 		$1.06M Buy
391,424
+38,807
+11% +$108K ﹤0.01% 3600
2017
Q3 		$1.13M Hold
352,617
– – ﹤0.01% 3560
2017
Q2 		$1.17M Buy
+352,617
New +$1.26M ﹤0.01% 3531

Other funds holding TGEN

BA
Bard Associates Chicago, Illinois $398M AUM 54.32% 1-Year Est. Return
CHAM
Clear Harbor Asset Management Stamford, Connecticut $1.45B AUM 23.7% 1-Year Est. Return
PCM
Portolan Capital Management Boston, Massachusetts $1.88B AUM 115.74% 1-Year Est. Return
HIM
Herald Investment Management London, United Kingdom $718M AUM 91.16% 1-Year Est. Return
PIP
Palisades Investment Partners Santa Monica, California $255M AUM 50.52% 1-Year Est. Return
ACM
Arosa Capital Management Miami Beach, Florida $660M AUM 210.26% 1-Year Est. Return
Susquehanna International Group
Susquehanna International Group Bala Cynwyd, Pennsylvania $893B AUM 36.07% 1-Year Est. Return
GJL
Gendell Jeffrey L $7.34B AUM 183.72% 1-Year Est. Return
Marshall Wace
Marshall Wace London, United Kingdom $100B AUM 35.1% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $124B AUM 33.93% 1-Year Est. Return

Vanguard Group's TGEN Position: Q4 2025 in Review

Vanguard Group increased its Tecogen Inc (TGEN) stake by 0.16% in Q4 2025, buying an estimated $10.5K and bringing the position to 871,840 shares worth $4.31M. The position accounts for ﹤0.01% of the portfolio, ranked #3311.

Vanguard Group first reported a position in TGEN in Q2 2017 and has held it in 15 quarters since. The position peaked at $7.67M in Q3 2025. 65 funds tracked by Wall St. Rank hold TGEN as of Q4 2025.

  • Vanguard Group held 871,840 shares of Tecogen Inc worth $4.31M as of Q4 2025.
  • Vanguard Group bought 1,400 Tecogen Inc shares in Q4 2025, an estimated $10.5K.
  • Tecogen Inc made up ﹤0.01% of Vanguard Group's portfolio in Q4 2025, its #3311 holding.
  • Vanguard Group first reported a position in Tecogen Inc in Q2 2017 and has held it in 15 quarters since.
  • Vanguard Group's Tecogen Inc position peaked at $7.67M in Q3 2025.
  • 65 funds tracked by Wall St. Rank held Tecogen Inc as of Q4 2025.

Based on Vanguard Group's 13F filing for Q4 2025, filed 29 Jan 2026.