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
Q1 		$129K Buy
50,200
+27,600
+122% +$101K ﹤0.01% 11815
2025
Q4 		$112K Sell
22,600
-111,700
-83% -$838K ﹤0.01% 11546
2025
Q3 		$1.18M Buy
+134,300
New +$1.08M ﹤0.01% 7168

Other funds holding TGEN

VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
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 $737M AUM 158.15% 1-Year Est. Return
ACM
Arosa Capital Management Miami Beach, Florida $660M AUM 210.26% 1-Year Est. Return
PIP
Palisades Investment Partners Santa Monica, California $255M AUM 50.52% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return
MIM
Meros Investment Management Dallas, Texas $231M AUM 35.94% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return

Citadel Advisors's TGEN Position: Q1 2026 in Review

Citadel Advisors increased its Tecogen Inc (TGEN) stake by 201% in Q1 2026, buying an estimated $362K and bringing the position to 147,472 shares worth $378K. The position accounts for ﹤0.01% of the portfolio, ranked #9937.

Citadel Advisors first reported a position in TGEN in Q1 2019 and has held it in 6 quarters since. The position peaked at $1.88M in Q3 2025. 62 funds tracked by Wall St. Rank hold TGEN as of Q1 2026.

  • Citadel Advisors held 147,472 shares of Tecogen Inc worth $378K as of Q1 2026.
  • Citadel Advisors bought 98,552 Tecogen Inc shares in Q1 2026, an estimated $362K.
  • Tecogen Inc made up ﹤0.01% of Citadel Advisors's portfolio in Q1 2026, its #9937 holding.
  • Citadel Advisors first reported a position in Tecogen Inc in Q1 2019 and has held it in 6 quarters since.
  • Citadel Advisors's Tecogen Inc position peaked at $1.88M in Q3 2025.
  • 62 funds tracked by Wall St. Rank held Tecogen Inc as of Q1 2026.

Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.