GERN — GERON CORP
Price · 2024-08-26 → 2026-08-21
499 daily closes shownAnonymous view is capped at two years of history. A free account extends it to five, and Pro opens the whole archive back to 2016-01-04.
Performance
Technicals
Others in Healthcare
Measured signals that fired on GERN
| date | signal | measured base rate |
|---|---|---|
| 2026-08-14 | Short volume far above its own normal short | -0.76% over 21 days · t = -2.79 · n = 5,897 statistically distinguishable from its control group |
| 2026-08-11 | Bollinger bandwidth breaks out of its own compression structure | -0.63% over 21 days · t = -2.80 · n = 7,196 statistically distinguishable from its control group |
| 2026-08-05 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
| 2026-06-18 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
| 2026-05-18 | Fair value gap, bearish structure | -0.45% over 21 days · t = -3.29 · n = 108,591 statistically distinguishable from its control group |
| 2026-05-14 | Equal lows taken out structure | -0.64% over 21 days · t = -4.75 · n = 55,661 statistically distinguishable from its control group |
Excess return against a matched control group, on a point-in-time universe that includes delisted companies. Most families do not survive that. How the measurement works →
Insider transactions (Form 4)
| date | insider | what | shares | price | value |
|---|---|---|---|---|---|
| 2026-06-30 | Spiegel Robert J. Director | Grant or award | 6.1K | 1.28 | 7.8K |
| 2026-03-31 | Spiegel Robert J. Director | Grant or award | 5.2K | 1.49 | 7.8K |
| 2026-02-18 | ROBERTSON MICHELLE EVP, CHIEF FINANCIAL OFFICER | Open-market sale | 9.9K | 1.94 | 19.1K |
| 2026-02-18 | ROBERTSON MICHELLE EVP, CHIEF FINANCIAL OFFICER | Option exercise | 27.5K | 0.00 | 0 |
| 2025-12-31 | Spiegel Robert J. Director | Grant or award | 5.9K | 1.32 | 7.8K |
| 2025-09-30 | Spiegel Robert J. Director | Grant or award | 5.7K | 1.37 | 7.8K |
| 2025-06-30 | Spiegel Robert J. Director | Grant or award | 5.5K | 1.41 | 7.8K |
| 2025-05-09 | LAWLIS V BRYAN Director | Open-market purchase | 13.3K | 1.18 | 15.7K |
| 2025-03-31 | Spiegel Robert J. Director | Grant or award | 4.9K | 1.59 | 7.8K |
| 2025-02-27 | Ziegler James EVP, Chief Commercial Officer | Open-market purchase | 100.0K | 1.60 | 160.0K |
Open-market purchases (code P) are the informative ones. Grants, option exercises and tax withholding are compensation mechanics, not decisions. How to read a Form 4 →
Largest institutional holders
| manager | value | shares |
|---|---|---|
| RA CAPITAL MANAGEMENT, L.P. | 95.0M | 63.8M |
| BlackRock, Inc. | 70.5M | 47.3M |
| Soleus Capital Management, L.P. | 61.8M | 41.5M |
| Deep Track Capital, LP | 47.3M | 31.7M |
| STATE STREET CORP | 45.4M | 30.5M |
| VANGUARD CAPITAL MANAGEMENT LLC | 39.7M | 26.7M |
| CITADEL ADVISORS LLC | 32.1M | 21.6M |
| Point72 Asset Management, L.P. | 30.5M | 20.5M |
| Clearbridge Investments, LLC | 29.2M | 19.6M |
| Eversept Partners, LP | 28.1M | 18.8M |
13F positions as of 2026-03-31, filed up to 45 days after quarter end. Long-only US equity — shorts and derivatives never appear. What 13F does and does not show →
Short selling
This is off-exchange short volume, not short interest: it is flow, not position, and 40–50% is normal because market makers short to fill your buy. Why that number misleads →
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