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SIMPLEX TRADING, LLC

Position in GERN — Geron Corp

CIK 1488542 CHICAGO, IL

Position in GERN

as of Jun 30, 2026 · filed Aug 12, 2026
Position Value
$144,625
-$32,685 QoQ
Shares Held
112,989
-5.1% QoQ
Ownership
0.018%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#115
of 259 holders
Holding Since
Mar 2020
18 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in GERN Over Time

Shares Held

Position Value (USD)

Position in Biotechnology

Healthcare · as of Jun 30, 2026

SIMPLEX TRADING, LLC holds $82,538,439 across 183 Biotechnology names. GERN ranks #72 (0.2% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in GERN

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18 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $144,625 112,989
2026-03-31 $177,310 119,000
2025-12-31 $45,670 34,599
2025-09-30 $87,134 63,602
2025-06-30 $193,745 137,408
2025-03-31 $302,133 190,021
2024-12-31 $504,740 142,582
2024-06-30 $308,277 72,707
2023-09-30 $42,794 20,186
2023-03-31 $167,929 77,387
2022-09-30 $425,678 181,914
2021-09-30 $75,200 54,891
2021-06-30 $77,396 54,891
2021-03-31 $1,306 827
2020-12-31 $66,484 41,814
2020-09-30 $44,502 25,576
2020-06-30 $872 400
2020-03-31 $2,648 2,226