Aktis OncologyAKTS

13F holders, Q1 2026 (March 31)
69holders
3famous investors
$17.89avg. 13F price*

At the end of Q1 2026, 69 institutions reported holding Aktis Oncology Inc. (AKTS) in their 13F filings. The largest holders were MPM Bioimpact LLC ($86.5M), EcoR1 Capital, LLC ($86.3M) and Blue Owl Capital Holdings LP ($56.6M). 3 famous investors held it, including George Soros (0.0% of Soros Fund Management's portfolio), Ken Griffin (0.0% of Citadel Advisors's portfolio) and David E. Shaw (0.0% of D. E. Shaw & Co.'s portfolio).

Company
Aktis Oncology Inc.
CUSIP
01021M104
Latest filing quarter
Q2 2026

History

Number of 13F holders

050100150 Q1 2026: 69Q1 2026Q2 2026: 113Q2 2026

Total Exit/New Position Q1 2026

InstitutionsTotal Value
New Positions65$601.5M
Exits0$0

Ownership 69 holders

MPM Bioimpact LLC 6.68% New 4,835,872 $86.5M
EcoR1 Capital, LLC 3.69% New 4,824,469 $86.3M
Blue Owl Capital Holdings LP 15.29% New 3,161,348 $56.6M
Wellington Management Group LLP 0.01% New 2,317,044 $41.5M
T. Rowe Price Investment Management, Inc. 0.03% New 2,123,812 $38.0M
BlackRock, Inc. 0.00% New 2,112,127 $37.8M
RTW Investments, LP 0.28% New 1,592,043 $28.5M
T. Rowe Price Associates Inc. 0.00% New 1,564,196 $28.0M
Ra Capital Management, L.P. 0.29% New 1,503,084 $26.9M
Janus Henderson Group PLC 0.01% New 1,454,267 $26.0M
Baker Bros. Advisors LP 0.10% New 996,351 $17.8M
Octagon Capital Advisors LP 1.90% New 960,847 $17.2M
Merck & Co., Inc. 4.88% New 952,844 $17.0M
Vanguard Capital Management LLC 0.00% — 833,913 $14.9M
Eventide Asset Management, LLC 0.15% New 507,000 $9.1M
Geode Capital Management, LLC 0.00% New 491,936 $8.8M
Avidity Partners Management LP 1.70% New 468,566 $8.4M
State Street Corp. 0.00% New 428,253 $7.7M
a16z Capital Management, L.L.C. 0.58% New 415,000 $7.4M
FMR LLC 0.00% New 386,379 $6.9M
UBS Group AG 0.00% New 353,263 $6.3M
ArrowMark Colorado Holdings LLC 0.16% New 329,471 $5.9M
Alyeska Investment Group, L.P. 0.01% New 290,000 $5.2M
Charles Schwab Investment Management Inc. 0.00% New 162,017 $2.9M
Driehaus Capital Management LLC 0.02% New 150,000 $2.7M
Northern Trust Corp. 0.00% New 149,476 $2.7M
Vanguard Fiduciary Trust Co. 0.00% — 127,395 $2.3M
Vanguard Portfolio Management LLC 0.00% — 120,322 $2.2M
Ameriprise Financial Inc. 0.00% New 102,925 $1.8M
TD Asset Management Inc 0.00% New 100,962 $1.8M
Laurion Capital Management LP 0.18% New 100,000 $1.8M
Soros Fund Management 0.03% New 100,000 $1.8M
Woodline Partners LP 0.01% New 100,000 $1.8M
Citadel Advisors 0.00% New 75,000 $1.3M
Bank of America Corp. 0.00% New 69,926 $1.3M
Manufacturers Life Insurance Company, The 0.00% New 46,993 $841K
Bank of New York Mellon Corp 0.00% New 42,901 $767K
Morgan Stanley 0.00% New 30,723 $550K
Goldman Sachs Group Inc. 0.00% New 30,163 $540K
Readystate Asset Management LP 0.06% New 30,000 $537K
Seven Grand Managers, LLC 0.03% New 25,000 $447K
Ghisallo Capital Management LLC 0.01% New 25,000 $447K
Nuveen, LLC 0.00% New 24,468 $438K
Rhumbline Advisers 0.00% New 21,033 $376K
D. E. Shaw & Co. 0.00% New 17,062 $305K
Zimmer Partners, LP 0.01% New 15,000 $268K
Universal- Beteiligungs- und Servicegesellschaft mbH 0.00% New 14,185 $254K
Deutsche Bank AG 0.00% New 14,080 $252K
XTX Topco Ltd 0.00% New 13,990 $250K
Invesco Ltd. 0.00% New 12,113 $217K
MetLife Investment Management, LLC 0.00% New 11,637 $208K
Barclays PLC 0.00% New 9,724 $174K
Vanguard Global Advisers, LLC 0.00% — 9,689 $173K
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% New 9,651 $173K
JPMorgan Chase & Co. 0.00% New 8,355 $138K
Wells Fargo & Company 0.00% New 7,611 $136K
PNC Financial Services Group, Inc. 0.00% New 6,948 $124K
Police & Firemen's Retirement System of New Jersey 0.00% New 5,530 $99K
BNP Paribas Financial Markets 0.00% New 4,480 $80K
STRS Ohio 0.00% New 3,600 $64K
New York State Common Retirement Fund 0.00% New 3,200 $57K
Legal & General Group Plc 0.00% New 1,826 $33K
Ameritas Investment Partners, Inc. 0.00% New 1,683 $30K
Russell Investments Group, Ltd. 0.00% New 1,551 $28K
Citigroup Inc. 0.00% New 1,019 $18K
Tower Research Capital LLC (TRC) 0.00% New 1,009 $18K
Salem Investment Counselors Inc. 0.00% New 1,000 $18K
Sterling Capital Management LLC 0.00% New 393 $7K
Cwm, LLC 0.00% New 21 $376

"% of holder's portfolio" is AKTS's weight in each manager's 13F, not the share of Aktis Oncology Inc. the manager owns.