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JANE STREET GROUP, LLC

Position in TGEN — Tecogen Inc.

CIK 1595888 NEW YORK, NY

Position in TGEN

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$256,233
-$44,160 QoQ
Shares Held
49,087
-58.2% QoQ
Ownership
0.163%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#36
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)

Derivatives in TGEN

reported options exposure · as of Jun 30, 2026
CallValue
$1,585,836
CallShares
303,800
PutValue
$424,908
PutShares
81,400

Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.

Position in Electrical Equipment & Parts

Industrials · as of Jun 30, 2026

JANE STREET GROUP, LLC holds $2,410,126,684 across 33 Electrical Equipment & Parts names. TGEN ranks #22 (0.0% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in TGEN

Export CSV
12 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $424,908 81,400
2026-06-30 $1,585,836 303,800
2026-06-30 $256,233 49,087
2026-03-31 $140,032 54,700
2026-03-31 $48,896 19,100
2026-03-31 $300,393 117,342
2025-12-31 $127,946 25,900
2025-12-31 $1,025,578 207,607
2025-12-31 $417,430 84,500
2025-09-30 $693,347 78,700
2025-09-30 $820,298 93,110
2025-09-30 $440,500 50,000