Citadel Advisors
TGEN

Citadel Advisors’s Tecogen Inc TGEN Stock Holding History

Citadel Advisors’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
2026
Q2 		$1.14M Sell
219,100
-13,300
-6% -$66.6K ﹤0.01% 7888
2026
Q1 		$595K Buy
232,400
+150,100
+182% +$551K ﹤0.01% 8873
2025
Q4 		$407K Sell
82,300
-28,000
-25% -$210K ﹤0.01% 9501
2025
Q3 		$972K Buy
+110,300
New +$884K ﹤0.01% 7588

Other funds holding TGEN

PCM
Portolan Capital Management Boston, Massachusetts $2.67B AUM 169.09% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
BA
Bard Associates Chicago, Illinois $451M AUM 66.6% 1-Year Est. Return
CHAM
Clear Harbor Asset Management Stamford, Connecticut $1.62B AUM 38.77% 1-Year Est. Return
HIM
Herald Investment Management London, United Kingdom $737M AUM 158.15% 1-Year Est. Return
GC
Gratia Capital Los Angeles, California $165M AUM 34.15% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return
MIM
Meros Investment Management Dallas, Texas $315M AUM 58.44% 1-Year Est. Return
PIP
Palisades Investment Partners Santa Monica, California $352M AUM 76.79% 1-Year Est. Return
Susquehanna International Group
Susquehanna International Group Bala Cynwyd, Pennsylvania $1.28T AUM 58.89% 1-Year Est. Return

Citadel Advisors's TGEN Position: Q2 2026 in Review

Citadel Advisors increased its Tecogen Inc (TGEN) stake by 64% in Q2 2026, buying an estimated $475K and bringing the position to 242,276 shares worth $1.26M. The position accounts for ﹤0.01% of the portfolio, ranked #7624.

Citadel Advisors first reported a position in TGEN in Q1 2019 and has held it in 7 quarters since. The position peaked at $1.88M in Q3 2025. 69 funds tracked by Wall St. Rank hold TGEN as of Q2 2026.

  • Citadel Advisors held 242,276 shares of Tecogen Inc worth $1.26M as of Q2 2026.
  • Citadel Advisors bought 94,804 Tecogen Inc shares in Q2 2026, an estimated $475K.
  • Tecogen Inc made up ﹤0.01% of Citadel Advisors's portfolio in Q2 2026, its #7624 holding.
  • Citadel Advisors first reported a position in Tecogen Inc in Q1 2019 and has held it in 7 quarters since.
  • Citadel Advisors's Tecogen Inc position peaked at $1.88M in Q3 2025.
  • 69 funds tracked by Wall St. Rank held Tecogen Inc as of Q2 2026.

Based on Citadel Advisors's 13F filing for Q2 2026, filed 14 Aug 2026.