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GERN

Geron Corp
$1.36 +0.09 (+7.09%) At close · Jul 2
Market Cap
$872.47M
Shares
641,520,974

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 255
Total Value: $736,886,360
Total Shares: 494,554,707
Showing 1–100 of 264 holdings by value · page 1 of 3

Institutional Ownership Trend

25 quarters

Holder Concentration

Across 255 13F filers · Δ vs Dec 31, 2025
Top Holder
12.9%
Jun 2023 → Mar 2026 · range 9.5% – 13.3%
−0.4 pts
Top 5
43.4%
Jun 2023 → Mar 2026 · range 34.2% – 43.7%
+0.8 pts
Top 10
65.2%
Jun 2023 → Mar 2026 · range 54.3% – 68.0%
+2.1 pts
HHI
548
Jun 2023 → Mar 2026 · range 392 – 572
Broadly held+10

Quarterly Activity

vs Dec 31, 2025
New
36
Increased
93
Decreased
55
Sold Out
43
Unchanged
71
Holder count: -7
Institutional value: +16.2%
Shares held: +2.9%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds Open
Mid Soleus Capital Management, L.P. +18,218,659 41,508,659
Mega CITADEL ADVISORS LLC +11,347,683 22,110,669
Mega Clearbridge Investments, LLC +5,377,367 19,620,320
Mega STATE STREET CORP +3,629,861 30,497,183
Mid Kynam Capital Management, LP +3,380,000 6,836,318

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds Open
Mid Vivo Capital, LLC −18,553,495 8,671,797
Mid Vestal Point Capital, LP −8,780,000 2,540,000
Mega GOLDMAN SACHS GROUP INC −4,997,807 11,176,591
Large Qube Research & Technologies Ltd −1,661,670 1,445,859
Mega FMR LLC −1,479,809 6,597,156

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD) Open
Mega VANGUARD CAPITAL MANAGEMENT LLC 26,669,029 $39,736,853
Large Point72 Asset Management, L.P. 20,457,134 $30,481,129
Mega VANGUARD FIDUCIARY TRUST CO 3,835,146 $5,714,367
Large MARSHALL WACE, LLP 2,960,047 $4,410,470
Mid J. Goldman & Co LP 610,659 $909,881

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD) Open
Mega VANGUARD GROUP INC 35,660,969 $47,072,477
Large Aberdeen Group plc 9,527,083 $12,575,749
Large Woodline Partners LP 7,504,094 $9,905,404
Mid ALGERT GLOBAL LLC 3,499,747 $4,619,666
Mid Affinity Asset Advisors, LLC 1,500,000 $1,980,000
Filter: New 36 Increased 93 Reduced 55 Sold out 43 Unchanged 71
Showing 100 of 264
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Open
Mid RA CAPITAL MANAGEMENT, L.P. $95,019,335 12.89% 63,771,366
Mega BlackRock, Inc. $70,506,465 9.57% 47,319,779
Mid Soleus Capital Management, L.P. $61,847,901 8.39% 41,508,659
Mid Deep Track Capital, LP $47,263,214 6.41% 31,720,278
Mega STATE STREET CORP $45,440,802 6.17% 30,497,183
Mega VANGUARD CAPITAL MANAGEMENT LLC $39,736,853 5.39% 26,669,029
Mega CITADEL ADVISORS LLC $32,149,087 4.36% 21,576,569
Large Point72 Asset Management, L.P. $30,481,129 4.14% 20,457,134
Mega Clearbridge Investments, LLC $29,234,276 3.97% 19,620,320
Mid Eversept Partners, LP $28,063,975 3.81% 18,834,883
Mega GEODE CAPITAL MANAGEMENT, LLC $20,369,468 2.76% 13,670,785
Mega MORGAN STANLEY $18,871,023 2.56% 12,665,119
Mid Nantahala Capital Management, LLC $16,725,250 2.27% 11,225,000
Mega GOLDMAN SACHS GROUP INC $16,653,119 2.26% 11,176,591
Mid Vivo Capital, LLC $12,920,977 1.75% 8,671,797
Mega MILLENNIUM MANAGEMENT LLC $10,909,067 1.48% 7,321,522
Mid Kynam Capital Management, LP $10,186,113 1.38% 6,836,318
Mega FMR LLC $9,829,761 1.33% 6,597,156
Mega DEUTSCHE BANK AG\ Bank $7,753,238 1.05% 5,203,516
Mid Pale Fire Capital SE $7,283,572 0.99% 4,888,304
Mega NORTHERN TRUST CORP Bank $7,244,771 0.98% 4,862,264
Mid SEGALL BRYANT & HAMILL, LLC $7,062,671 0.96% 4,740,048
Mega BANK OF AMERICA CORP /DE/ Bank $6,788,851 0.92% 4,556,278
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $6,680,230 0.91% 4,483,376
Large Candriam S.C.A. $5,842,999 0.79% 3,921,476
Mega VANGUARD FIDUCIARY TRUST CO Bank $5,714,367 0.78% 3,835,146
Mega UBS Group AG $5,503,066 0.75% 3,693,333
Large MARSHALL WACE, LLP $4,410,470 0.60% 2,960,047
Mega Nuveen, LLC $4,367,918 0.59% 2,931,489
Mid Vestal Point Capital, LP $3,784,600 0.51% 2,540,000
Mid EDMOND DE ROTHSCHILD HOLDING S.A. $3,471,700 0.47% 2,330,000
Mega JANUS HENDERSON GROUP PLC $3,305,111 0.45% 2,218,196
Mega TWO SIGMA INVESTMENTS, LP $2,815,307 0.38% 1,889,468
Large RENAISSANCE TECHNOLOGIES LLC $2,681,286 0.36% 1,799,521
Mega Bank of New York Mellon Corp Bank $2,294,949 0.31% 1,540,236
Large Qube Research & Technologies Ltd $2,154,329 0.29% 1,445,859
Small NAN FUNG TRINITY (HK) LTD $2,046,589 0.28% 1,373,550
Mega Invesco Ltd. $1,943,640 0.26% 1,304,458
Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC $1,893,807 0.26% 1,271,014
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $1,862,525 0.25% 1,250,017
Large HRT FINANCIAL LP $1,809,980 0.25% 1,214,752
Mid World Investment Advisors $1,540,330 0.21% 1,033,779
Mid XTX Topco Ltd $1,432,126 0.19% 961,159
Mega Swiss National Bank Bank $1,411,775 0.19% 947,500
Large Rafferty Asset Management, LLC $1,316,556 0.18% 883,595
Mega JANE STREET GROUP, LLC $1,150,235 0.16% 771,971
Large CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Pension $1,098,343 0.15% 737,143
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $1,046,278 0.14% 702,200
Mega RHUMBLINE ADVISERS $1,043,150 0.14% 700,101
Mega AMERIPRISE FINANCIAL INC $970,264 0.13% 651,185
Mega CITIGROUP INC $943,915 0.13% 633,501
Small Virtus Investment Advisers, LLC $924,984 0.13% 620,795
Mid J. Goldman & Co LP $909,881 0.12% 610,659
Micro Lion Point Capital, LP $861,220 0.12% 578,000
Mega ALLIANCEBERNSTEIN L.P. $827,994 0.11% 555,701
Large ALPS ADVISORS INC $776,944 0.11% 521,439
Small Nvest Financial, LLC $757,626 0.10% 508,474
Mega WELLS FARGO & COMPANY/MN $686,486 0.09% 460,729
Mega CITADEL ADVISORS LLC $673,331 0.09% 451,900
Mega BNP PARIBAS ARBITRAGE, SA $635,780 0.09% 426,698
Small Seven Fleet Capital Management LP $632,028 0.09% 424,180
Mid Private Advisor Group, LLC $630,758 0.09% 423,328
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $614,476 0.08% 412,400
Large Man Group plc $591,392 0.08% 396,908
Mid Hennion & Walsh Asset Management, Inc. $590,981 0.08% 396,632
Mid PROFUND ADVISORS LLC $588,414 0.08% 394,909
Mega PRICE T ROWE ASSOCIATES INC /MD/ $581,123 0.08% 390,016
Large PANAGORA ASSET MANAGEMENT INC $537,659 0.07% 360,845
Small Inspire Investing, LLC $520,944 0.07% 349,627
Mega JANE STREET GROUP, LLC $498,703 0.07% 334,700
Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. Mutual Fund $475,024 0.06% 318,809
Mega VANGUARD ASSET MANAGEMENT, Ltd $466,544 0.06% 313,117
Mega Legal & General Group Plc $442,292 0.06% 296,841
Small MOODY NATIONAL BANK TRUST DIVISION Bank $440,183 0.06% 295,425
Mega JPMORGAN CHASE & CO $434,837 0.06% 291,838
Mega RAYMOND JAMES FINANCIAL INC $433,261 0.06% 290,780
Large SG Americas Securities, LLC Broker-Dealer $415,833 0.06% 279,083
Mid GSA CAPITAL PARTNERS LLP $385,036 0.05% 258,414
Mid Aquatic Capital Management LLC $381,331 0.05% 255,927
Large MetLife Investment Management, LLC $373,486 0.05% 250,662
Mid Quadrature Capital Ltd $346,174 0.05% 232,332
Large Creative Planning $328,699 0.04% 220,604
Mega Vanguard Global Advisers, LLC $327,551 0.04% 219,833
Mid GROUP ONE TRADING LLC $309,891 0.04% 207,981
Mega BARCLAYS PLC $306,889 0.04% 205,967
Large STATE OF WISCONSIN INVESTMENT BOARD $303,253 0.04% 203,526
Mid ADAR1 Capital Management, LLC $298,000 0.04% 200,000
Large Cresset Asset Management, LLC $289,751 0.04% 194,464
Large NEW YORK STATE COMMON RETIREMENT FUND Pension $255,464 0.03% 171,453
Large State of New Jersey Common Pension Fund D Pension $243,796 0.03% 163,622
Large Police & Firemen's Retirement System of New Jersey Pension $228,522 0.03% 153,371
Mega LPL Financial LLC $223,286 0.03% 149,857
Mega MANUFACTURERS LIFE INSURANCE COMPANY, THE Insurance $221,516 0.03% 148,669
Mid INTECH INVESTMENT MANAGEMENT LLC $213,834 0.03% 143,513
Large STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM Pension $211,761 0.03% 142,122
Small Scientech Research LLC $199,430 0.03% 133,846
Mega Amundi $197,226 0.03% 132,367
Large ARIZONA STATE RETIREMENT SYSTEM Pension $195,945 0.03% 131,507
Large TORONTO DOMINION BANK Bank $190,289 0.03% 127,711
Large Vanguard Investments Australia, Ltd. $184,593 0.03% 123,888
Key facts CIK 886744 CUSIP 374163103 13F (30d) 2 filings 1 filers Visit website Investor relations

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