JANE STREET GROUP, LLC

Position in GERN — Geron Corp

CIK 1595888 NEW YORK, NY

Back to GERN Full portfolio

Position in GERN

as of Jun 30, 2026 · filed Aug 14, 2026 Compact

Position Value

-$1,150,235 QoQ

Shares Held

-100.0% QoQ

Ownership

0.000%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Jun 2020

24 quarters on record

Common Shares in GERN Over Time

Shares Held

Position Value (USD)

Derivatives in GERN

reported options exposure · as of Jun 30, 2026

CallValue

$246,912

CallShares

192,900

PutValue

$44,288

PutShares

34,600

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 Biotechnology

Healthcare · as of Jun 30, 2026

JANE STREET GROUP, LLC holds $1,364,050,815 across 292 Biotechnology names.

#	Ticker	Company	Shares	Value (USD)
1	BBIO	BridgeBio Pharma, Inc.	2,934,193	$218,538,693
2	MDGL	Madrigal Pharmaceuticals, Inc.	191,541	$102,847,939
3	AXSM	Axsome Therapeutics, Inc.	403,995	$98,885,855
4	TGTX	Tg Therapeutics, Inc.	1,752,646	$96,290,370
5	EXEL	Exelixis, Inc.	1,402,438	$76,306,651
6	QURE	uniQure N.V.	1,610,483	$74,178,846
7	HALO	Halozyme Therapeutics, Inc.	694,684	$54,372,915
8	TVTX	Travere Therapeutics, Inc.	938,699	$53,327,489

All Filings in GERN

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38 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$44,288	34,600	-4.9%	Put	Defined	2026-08-14
2026-06-30	$246,912	192,900	-42.4%	Call	Defined	2026-08-14
2026-03-31	$1,150,235	771,971	-23.8%	Shares	Defined	2026-05-12
2026-03-31	$498,703	334,700	+632.4%	Call	Defined	2026-05-12
2026-03-31	$54,236	36,400	-27.8%	Put	Defined	2026-05-12
2025-12-31	$60,324	45,700	-27.7%	Call	Defined	2026-02-12
2025-12-31	$66,528	50,400	+155.8%	Put	Defined	2026-02-12
2025-12-31	$1,337,162	1,013,003	-52.3%	Shares	Defined	2026-02-12
2025-09-30	$86,584	63,200	+130.7%	Call	Defined	2025-11-14
2025-09-30	$2,907,602	2,122,338	+8304.0%	Shares	Defined	2025-11-14
2025-06-30	$38,634	27,400	+140.4%	Call	Defined	2025-08-14
2025-06-30	$35,607	25,254	-95.8%	Shares	Defined	2025-08-14
2025-03-31	$957,317	602,087	+50.7%	Shares	Defined	2025-05-19
2025-03-31	$18,126	11,400	-95.7%	Call	Defined	2025-05-19
2024-12-31	$945,534	267,100	+9.8%	Call	Defined	2025-02-14
2024-12-31	$1,413,995	399,434	-58.0%	Shares	Defined	2025-02-14
2024-09-30	$89,438	19,700	-65.0%	Put	Defined	2024-11-15
2024-09-30	$4,316,022	950,666	-35.9%	Shares	Defined	2024-11-15
2024-09-30	$1,104,582	243,300	+897.1%	Call	Defined	2024-11-15
2024-06-30	$6,291,651	1,483,880	+203.8%	Shares	Defined	2024-08-15
2024-03-31	$1,612,066	488,505	-20.4%	Shares	Defined	2024-05-16
2023-12-31	$1,294,305	613,415	+225.7%	Shares	Defined	2024-02-15
2023-09-30	$399,306	188,352	-67.1%	Shares	Defined	2023-11-15
2023-06-30	$1,838,389	572,707	+103.6%	Shares	Defined	2023-08-14
2023-03-31	$610,259	281,226	+789.7%	Shares	Defined	2023-05-16
2022-12-31	$76,496	31,610	-32.2%	Shares	Defined	2023-02-15
2022-09-30	$109,132	46,638	-37.4%	Shares	Defined	2022-11-15
2022-06-30	$115,474	74,500	-45.4%	Shares	Defined	2022-08-16
2021-12-31	$166,607	136,564	+261.9%	Shares	Defined	2022-02-15
2021-09-30	$51,690	37,731	-66.6%	Shares	Defined	2021-11-16
2021-06-30	$159,264	112,954	+218.4%	Shares	Defined	2021-08-16
2021-06-30	$79,383	56,300	—	Put	Defined	2021-08-16
2021-06-30	$34,404	24,400	-82.6%	Call	Defined	2021-08-16
2021-03-31	$56,048	35,474	+23.2%	Shares	Defined	2021-05-18
2020-12-31	$45,793	28,801	-78.5%	Shares	Defined	2021-02-17
2020-09-30	$232,617	133,688	+516.8%	Shares	Defined	2020-11-17
2020-06-30	$47,247	21,673	—	Shares	Defined	2020-08-17
2020-06-30	$305,418	140,100	—	Call	Defined	2020-08-17
No filing history on record for this holder in this stock.