Geron Corporation
DE ˙ DB ˙ US3741631036
1,03 € ↑0,01 (1,23%)
2026-06-04
CENA AKCJI
SecurityDE:GON / Geron Corporation
InstitutionJanus Henderson Group Plc
Latest Disclosed Ownership2,218,196 shares
Latest Disclosed Value $ 3,303,915
Janus Henderson Group Plc reports 826.73% increase in ownership of GON / Geron Corporation

On May 18, 2026 - Janus Henderson Group Plc filed a 13F-HR/A form disclosing ownership of 2,218,196 shares of Geron Corporation (DE:GON) valued at $2,727,272 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 239,357 shares of Geron Corporation. This represents a change in shares of 826.73% during the quarter. The current value of the position is $2,288,069 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-18 2026-03-31 13F/A-1 GERON COM 374163103 2,218,196 1,978,839 826.73 3,304 941.96 0.0006
2026-05-15 2026-03-31 13F GERON COM 374163103 2,218,196 1,978,839 3,304 0.0006
2026-02-17 2025-12-31 13F GERON COM 374163103 239,357 0 0.00 317 -3.65 0.0001
2025-11-14 2025-09-30 13F GERON COM 374163103 239,357 0 0.00 329 -2.08 0.0002
2025-08-14 2025-06-30 13F GERON COM 374163103 239,357 -18,653,618 -98.73 336 -98.92 0.0002
2025-05-15 2025-03-31 13F GERON COM 374163103 18,892,975 -8,189,486 -30.24 31,109 -67.52 0.0171
2025-02-14 2024-12-31 13F GERON COM 374163103 27,082,461 4,516,615 20.02 95,769 -6.29 0.0487
2024-11-14 2024-09-30 13F GERON COM 374163103 22,565,846 13,163,889 140.01 102,193 156.66 0.0523
2024-08-14 2024-06-30 13F GERON COM 374163103 9,401,957 9,220,920 5,093.39 39,817 6,580.70 0.0213
2024-05-15 2024-03-31 13F GERON COM 374163103 181,037 19 0.01 597 56.02 0.0003
2024-02-14 2023-12-31 13F GERON COM 374163103 181,018 -292 -0.16 383 -0.26 0.0002
2023-11-14 2023-09-30 13F GERON COM 374163103 181,310 50 0.03 383 -34.19 0.0003
2023-08-14 2023-06-30 13F GERON COM 374163103 181,260 -220 -0.12 583 48.47 0.0004
2023-05-15 2023-03-31 13F GERON COM 374163103 181,480 132,063 267.24 393 229.41 0.0003
2023-02-14 2022-12-31 13F GERON COM 374163103 49,417 -18 -0.04 119 2.59 0.0001
2023-01-13 2022-09-30 13F/A-1 GERON COM 374163103 49,435 188 0.38 116 52.63 0.0001
2022-11-14 2022-09-30 13F GERON COM 374163103 49,435 188 116 0.0001
2022-08-15 2022-06-30 13F GERON COM 374163103 49,247 201 0.41 76 13.43 0.0001
2022-05-16 2022-03-31 13F GERON COM 374163103 49,046 21 0.04 67 11.67 0.0000
2022-02-14 2021-12-31 13F GERON COM 374163103 49,025 24,741 101.88 60 81.82 0.0000
2021-11-16 2021-09-30 13F GERON COM 374163103 24,284 24,284 33 0.0000
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.