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GROUP ONE TRADING LLC

Position in TGEN — Tecogen Inc.

CIK 932540 CHICAGO, IL

Position in TGEN

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$260,331
+$45,491 QoQ
Shares Held
49,872
-40.6% QoQ
Ownership
0.165%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
#34
of 69 holders
Holding Since
Sep 2025
4 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in TGEN Over Time

Shares Held

Position Value (USD)

Position in Electrical Equipment & Parts

Industrials · as of Jun 30, 2026

GROUP ONE TRADING LLC holds $55,808,267 across 19 Electrical Equipment & Parts names. TGEN ranks #10 (0.5% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in TGEN

Export CSV
4 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $260,331 49,872
2026-03-31 $214,840 83,922
2025-12-31 $279,495 56,578
2025-09-30 $299,117 33,952