Vault-13

AKTIS ONCOLOGY INC AKTS

COM · Common Stock · CUSIP 01021M104

114 institutional holders +45 vs Q1 2026
34,169,91334.2m shares reported held*
$1.1bnreported value*
51 new 27 added 18 reduced 6 sold out net sold ≈ $28.1m (-870.5k shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($10.1k this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $32.23.

Trends to Q2 2026

Institutional holders

Managers reporting a position, each quarter

050100150Q1 26: 69Q2 26: 114114Q1 26Q2 26
Numbers
QuarterHolders
Q1 202669
Q2 2026114

Biggest buyers

TCG Crossover Management, LLC New +696,560+696.6k
BlackRock, Inc. Added +166,231+166.2k
BARCLAYS PLC Added +141,972+142.0k
RENAISSANCE TECHNOLOGIES LLC New +95,400+95.4k
POLEN CAPITAL MANAGEMENT LLC New +63,514+63.5k
Tidal Investments LLC New +57,059+57.1k
STATE STREET CORP Added +55,757+55.8k
RAYMOND JAMES FINANCIAL INC New +50,464+50.5k
AQR CAPITAL MANAGEMENT LLC New +48,123+48.1k
Quantinno Capital Management LP New +46,887+46.9k

Biggest sellers

PRICE T ROWE ASSOCIATES INC /MD/ Reduced -800,697-800.7k
Avidity Partners Management LP Reduced -452,932-452.9k
WELLINGTON MANAGEMENT GROUP LLP Reduced -350,800-350.8k
UBS Group AG Reduced -253,303-253.3k
RA CAPITAL MANAGEMENT, L.P. Reduced -188,679-188.7k
Driehaus Capital Management LLC Sold out -150,000-150.0k
FMR LLC Reduced -100,748-100.7k
Laurion Capital Management LP Sold out -100,000-100.0k
Blue Owl Capital Holdings LP Reduced -91,129-91.1k
ArrowMark Colorado Holdings LLC Reduced -83,599-83.6k

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
VV Manager II, LLC 13D · may seek influence new · filed 2026-01-14
Stated purposeThe information set forth in Item 3 of this Statement is incorporated herein by reference. The Reporting Persons hold the securities of the Issuer for general investment purposes. The Reporting Persons may, from time to time, depending on prevailing market, economic and other conditions, acquire additional shares of Common Stock or other securities of the Issuer, dispose of any such securities, or engage in discussions with the Issuer concerning such acquisitions or dispositions or further investments in the Issuer. The Reporting Persons intend to review their investment in the Issuer on a continuing basis and, depending upon the price and availability of shares of Common Stock or other securities of the Issuer, subsequent developments affecting the Issuer, the Issuer's business and prospe… Full filing
10.9% new 5.8m≈ $187.9m 2026-01-14
EcoR1 Capital, LLC 13D · may seek influence new · filed 2026-01-20
Stated purposeOleg Nodelman, the manager of EcoR1, is a member of the Issuer's board of directors. The reporting persons acquired securities of the Issuer for investment purposes based on their belief that the Issuer's securities represented an attractive investment opportunity. The reporting persons will routinely monitor the Issuer regarding a wide variety of factors that affect their investment considerations, including, current and anticipated future trading prices of the Common Stock and other securities, the Issuer's operations, assets, prospects, financial position, and business development, Issuer's management, Issuer-related competitive and strategic matters, general economic, financial market and industry conditions, and other investment considerations. Depending on their evaluation of vario… Full filing
9.1% new 4.9m≈ $156.7m 2026-01-20
Blue Owl Capital Holdings LP 13G · institution new · filed 2026-05-14 5.9% new 3.2m≈ $101.9m 2026-05-14

Insider purchases and sales since 1 Apr 2026

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

Officers and directors buying vs selling

Number of people, by quarter (10% owners not included)

BuyingSelling
404Q4 24: 0 buyingQ4 24: 0 sellingQ1 25: 0 buyingQ1 25: 0 sellingQ1 25Q2 25: 0 buyingQ2 25: 0 sellingQ3 25: 0 buyingQ3 25: 0 sellingQ3 25Q4 25: 0 buyingQ4 25: 0 sellingQ1 26: 3 buyingQ1 26: 0 sellingQ1 26Q2 26: 0 buyingQ2 26: 0 sellingQ3 26: 0 buyingQ3 26: 3 sellingQ3 26
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q4 20240—0——
Q1 20250—0——
Q2 20250—0——
Q3 20250—0——
Q4 20250—0——
Q1 20263$59.2m0——
Q2 20260—0——
Q3 20260—3$3.2m$258.6k
DateInsiderTradeSharesPrice ValueTheir holding
2026-09-23 Czibere Akos Chief Medical Officer Sold plan 12,500 $20.69 $258.6k12.5k shares -100%
2026-07-20 Herrmann Ken Director Sold 4,856 $24.56 $119.3k4.9k shares -100%
2026-07-17 Herrmann Ken Director Sold 3,065 $25.21 $77.3k3.1k shares -100%
2026-07-08 Czibere Akos Chief Medical Officer Sold 50,000 $27.77 $1.4m50.0k shares -100%
2026-07-08 Ron-Bigger Shulamit Chief Operating Officer Sold 50,000 $27.75 $1.4m50.0k shares -100%

Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).

Holders, Q2 2026

#ManagerLocationShares Value% of their portfolioChangeShares change
1 MPM BIOIMPACT LLC 9.50% of their portfolio BOSTON, MA 4,835,8724.8m $155.9m $155.9m 9.50% Unchanged
2 EcoR1 Capital, LLC 7.71% of their portfolio San Francisco, CA 4,824,4694.8m $155.5m $155.5m 7.71% Unchanged
3 Blue Owl Capital Holdings LP 15.04% of their portfolio New York, NY 3,070,2193.1m $99.0m $99.0m 15.04% Reduced -91.1k -91,129
4 BlackRock, Inc. 0.00% of their portfolio New York, NY 2,278,3582.3m $73.4m $73.4m 0.00% Added +166.2k +166,231
5 T. Rowe Price Investment Management, Inc. 0.04% of their portfolio BALTIMORE, MD 2,051,4472.1m $66.1m $66.1m 0.04% Reduced -72.4k -72,365
6 WELLINGTON MANAGEMENT GROUP LLP 0.01% of their portfolio Boston, MA 1,966,2442.0m $63.4m $63.4m 0.01% Reduced -350.8k -350,800
7 RTW INVESTMENTS, LP 0.44% of their portfolio NEW YORK, NY 1,592,0431.6m $51.3m $51.3m 0.44% Unchanged
8 RA CAPITAL MANAGEMENT, L.P. 0.37% of their portfolio BOSTON, MA 1,314,4051.3m $42.4m $42.4m 0.37% Reduced -188.7k -188,679
9 Jupiter Topco LLC 0.02% of their portfolio NEW YORK, NY 1,314,2671.3m $42.4m $42.4m 0.02% First filing
10 BAKER BROS. ADVISORS LP 0.16% of their portfolio NEW YORK, NY 996,351996.4k $32.1m $32.1m 0.16% Unchanged
11 Octagon Capital Advisors LP 2.84% of their portfolio NEW YORK, NY 960,847960.8k $31.0m $31.0m 2.84% Unchanged
12 Merck & Co., Inc. 5.83% of their portfolio RAHWAY, NJ 952,844952.8k $30.7m $30.7m 5.83% Unchanged
13 VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio MALVERN, PA 817,075817.1k $26.3m $26.3m 0.00% Reduced -16.8k -16,838
14 PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio BALTIMORE, MD 763,499763.5k $24.6m $24.6m 0.00% Reduced -800.7k -800,697
15 TCG Crossover Management, LLC 0.54% of their portfolio PALO ALTO, CA 696,560696.6k $22.5m $22.5m 0.54% New
16 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 520,737520.7k $16.8m $16.8m 0.00% Added +28.8k +28,801
17 EVENTIDE ASSET MANAGEMENT, LLC 0.22% of their portfolio Boston, MA 507,000507.0k $16.3m $16.3m 0.22% Unchanged
18 Avidity Partners Management LP 2.50% of their portfolio DALLAS, TX 484,200484.2k $15.6m $15.6m 2.50% Reduced -452.9k -452,932
19 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 484,010484.0k $15.6m $15.6m 0.00% Added +55.8k +55,757
20 a16z Capital Management, L.L.C. 0.09% of their portfolio MENLO PARK, CA 415,000415.0k $13.4m $13.4m 0.09% Unchanged
21 Alyeska Investment Group, L.P. 0.02% of their portfolio CHICAGO, IL 290,000290.0k $9.3m $9.3m 0.02% Unchanged
22 FMR LLC 0.00% of their portfolio BOSTON, MA 285,631285.6k $9.2m $9.2m 0.00% Reduced -100.7k -100,748
23 ArrowMark Colorado Holdings LLC 0.33% of their portfolio Denver, CO 245,872245.9k $7.9m $7.9m 0.33% Reduced -83.6k -83,599
24 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 180,575180.6k $5.8m $5.8m 0.00% Added +31.1k +31,099
25 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio SAN FRANCISCO, CA 166,842166.8k $5.4m $5.4m 0.00% Added +4.8k +4,825
26 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 151,696151.7k $4.9m $4.9m 0.00% Added +142.0k +141,972
27 VANGUARD PORTFOLIO MANAGEMENT LLC 0.00% of their portfolio MALVERN, PA 145,220145.2k $4.7m $4.7m 0.00% Added +24.9k +24,898
28 VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio MALVERN, PA 133,834133.8k $4.3m $4.3m 0.00% Added +6.4k +6,439
29 TD Asset Management Inc 0.00% of their portfolio Toronto, A6 105,902105.9k $3.4m $3.4m 0.00% Added +4.9k +4,940
30 SOROS FUND MANAGEMENT LLC 0.04% of their portfolio NEW YORK, NY 100,000100.0k $3.2m $3.2m 0.04% Unchanged
31 Woodline Partners LP 0.01% of their portfolio San Francisco, CA 100,000100.0k $3.2m $3.2m 0.01% Unchanged
32 UBS Group AG 0.00% of their portfolio ZURICH, V8 99,960100.0k $3.2m $3.2m 0.00% Reduced -253.3k -253,303
33 RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio NEW YORK, NY 95,40095.4k $3.1m $3.1m 0.00% New
34 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 72,83572.8k $2.3m $2.3m 0.00% Added +2.9k +2,909
35 POLEN CAPITAL MANAGEMENT LLC 0.02% of their portfolio Boca Raton, FL 63,51463.5k $2.0m $2.0m 0.02% New
36 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 62,63662.6k $2.0m $2.0m 0.00% Added +31.9k +31,913
37 Tidal Investments LLC 0.00% of their portfolio Milwaukee, WI 57,05957.1k $1.8m $1.8m 0.00% New
38 RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio ST. PETERSBURG, FL 50,46450.5k $1.6m $1.6m 0.00% New
39 Nuveen, LLC 0.00% of their portfolio CHARLOTTE, NC 49,81649.8k $1.6m $1.6m 0.00% Added +25.3k +25,348
40 Bank of New York Mellon Corp 0.00% of their portfolio NEW YORK, NY 49,25049.2k $1.6m $1.6m 0.00% Added +6.3k +6,349
41 AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio Greenwich, CT 48,12348.1k $1.6m $1.6m 0.00% New
42 MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio Toronto, A6 48,04448.0k $1.5m $1.5m 0.00% Added +1.1k +1,051
43 Quantinno Capital Management LP 0.00% of their portfolio NEW YORK, NY 46,88746.9k $1.5m $1.5m 0.00% New
44 GREAT LAKES ADVISORS, LLC 0.01% of their portfolio CHICAGO, IL 43,61243.6k $1.4m $1.4m 0.01% New
45 Mirador Capital Partners LP 0.16% of their portfolio PLEASANTON, CA 40,12440.1k $1.3m $1.3m 0.16% New
46 Squarepoint Ops LLC 0.00% of their portfolio NEW YORK, NY 38,38138.4k $1.2m $1.2m 0.00% New
47 Jump Financial, LLC 0.01% of their portfolio Chicago, IL 32,77932.8k $1.1m $1.1m 0.01% New
48 Sofinnova Investments, Inc. 0.06% of their portfolio Menlo Park, CA 32,43632.4k $1.0m $1.0m 0.06% New
49 TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio NEW YORK, NY 30,91430.9k $996.4k $996.4k 0.00% New
50 READYSTATE ASSET MANAGEMENT LP 0.04% of their portfolio CHICAGO, IL 30,00030.0k $966.9k $966.9k 0.04% Unchanged
51 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 27,65927.7k $891.5k $891.5k 0.00% Added +20.0k +20,048
52 RHUMBLINE ADVISERS 0.00% of their portfolio BOSTON, MA 26,94526.9k $868.4k $868.4k 0.00% Added +5.9k +5,912
53 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 25,53725.5k $823.1k $823.1k 0.00% Reduced -49.5k -49,463
54 Ghisallo Capital Management LLC 0.02% of their portfolio BOSTON, MA 25,00025.0k $805.8k $805.8k 0.02% Unchanged
55 SEVEN GRAND MANAGERS, LLC 0.03% of their portfolio BRONXVILLE, NY 25,00025.0k $805.8k $805.8k 0.03% Unchanged
56 TUDOR INVESTMENT CORP ET AL 0.00% of their portfolio STAMFORD, CT 21,40221.4k $689.8k $689.8k 0.00% New
57 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 21,27821.3k $685.8k $685.8k 0.00% Reduced -8.9k -8,885
58 DEUTSCHE BANK AG\ 0.00% of their portfolio FRANKFURT AM MAIN, 2M 21,02221.0k $677.5k $677.5k 0.00% Added +6.9k +6,942
59 AMERIPRISE FINANCIAL INC 0.00% of their portfolio MINNEAPOLIS, MN 20,00020.0k $644.6k $644.6k 0.00% Reduced -82.9k -82,925
60 Mariner, LLC 0.00% of their portfolio Overland Park, KS 17,77017.8k $572.7k $572.7k 0.00% New
61 SEI INVESTMENTS CO 0.00% of their portfolio OAKS, PA 16,40216.4k $528.5k $528.5k 0.00% New
62 Virtus Investment Advisers, LLC 0.11% of their portfolio HARTFORD, CT 14,92014.9k $480.9k $480.9k 0.11% New
63 Invesco Ltd. 0.00% of their portfolio ATLANTA, GA 14,90814.9k $480.5k $480.5k 0.00% Added +2.8k +2,795
64 LOS ANGELES CAPITAL MANAGEMENT LLC 0.00% of their portfolio LOS ANGELES, CA 14,37914.4k $463.4k $463.4k 0.00% New
65 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 13,17713.2k $424.7k $424.7k 0.00% Added +12.2k +12,158
66 MetLife Investment Management, LLC 0.00% of their portfolio Whippany, NJ 12,99413.0k $418.8k $418.8k 0.00% Added +1.4k +1,357
67 Caprock Group, LLC 0.01% of their portfolio BOISE, ID 9,9089.9k $319.3k $319.3k 0.01% New
68 MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio CAUSEWAY BAY, K3 9,7699.8k $314.9k $314.9k 0.00% Added +118 +118
69 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 8,8358.8k $266.0k $266.0k 0.00% Added +480 +480
70 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio BALA CYNWYD, PA 8,6238.6k $277.9k $277.9k 0.00% New
71 Russell Investments Group, Ltd. 0.00% of their portfolio Seattle, WA 7,7547.8k $249.9k $249.9k 0.00% Added +6.2k +6,203
72 NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio ALBANY, NY 7,5007.5k $241.7k $241.7k 0.00% Added +4.3k +4,300
73 AXQ CAPITAL, LP 0.02% of their portfolio JERSEY CITY, NJ 7,0207.0k $226.3k $226.3k 0.02% New
74 Vanguard Global Advisers, LLC 0.00% of their portfolio MALVERN, PA 6,8866.9k $221.9k $221.9k 0.00% Reduced -2.8k -2,803
75 PNC Financial Services Group, Inc. 0.00% of their portfolio Pittsburgh, PA 6,1406.1k $197.9k $197.9k 0.00% Reduced -808 -808
76 Police & Firemen's Retirement System of New Jersey 0.00% of their portfolio TRENTON, NJ 5,5305.5k $178.2k $178.2k 0.00% Unchanged
77 LANARK FINANCIAL, INC. 0.01% of their portfolio BIRMINGHAM, AL 5,3585.4k $172.7k $172.7k 0.01% New
78 SG Americas Securities, LLC 0.00% of their portfolio NEW YORK, NY 3,3683.4k $109.0k $109.0k 0.00% New
79 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 3,2803.3k $105.7k $105.7k 0.00% Reduced -1.2k -1,200
80 STRS OHIO 0.00% of their portfolio COLUMBUS, OH 3,1003.1k $99.9k $99.9k 0.00% Reduced -500 -500
81 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 2,2682.3k $73.1k $73.1k 0.00% Added +1.3k +1,259
82 Pinnacle Wealth Planning Services, Inc. 0.01% of their portfolio MANSFIELD, OH 2,2672.3k $73.1k $73.1k 0.01% New
83 Legal & General Group Plc 0.00% of their portfolio London, X0 2,0622.1k $66.6k $66.6k 0.00% Added +236 +236
84 Ameritas Investment Partners, Inc. 0.00% of their portfolio LINCOLN, NE 1,9251.9k $62.0k $62.0k 0.00% Added +242 +242
85 SALEM INVESTMENT COUNSELORS INC 0.00% of their portfolio WINSTON-SALEM, NC 1,0001.0k $32.2k $32.2k 0.00% Unchanged
86 State of Wyoming 0.00% of their portfolio CHEYENNE, WY 985985 $31.7k $31.7k 0.00% New
87 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 797797 $25.0k $25.0k 0.00% New
88 NATIONAL BANK OF CANADA /FI/ 0.00% of their portfolio MONTREAL, A8 700700 $22.6k $22.6k 0.00% New
89 FIFTH THIRD BANCORP 0.00% of their portfolio CINCINNATI, OH 576576 $18.6k $18.6k 0.00% New
90 Rockefeller Capital Management L.P. 0.00% of their portfolio NEW YORK, NY 397397 $12.8k $12.8k 0.00% New
91 Global Retirement Partners, LLC 0.00% of their portfolio San Rafael, CA 395395 $12.7k $12.7k 0.00% First filing
92 Arax Advisory Partners 0.00% of their portfolio NEW YORK, NY 385385 $12.4k $12.4k 0.00% New
93 Integrated Wealth Concepts LLC 0.00% of their portfolio WALTHAM, MA 310310 $10.0k $10.0k 0.00% New
94 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio WEST SACRAMENTO, CA 288288 $9.3k $9.3k 0.00% New
95 Federation des caisses Desjardins du Quebec 0.00% of their portfolio LEVIS, A8 250250 $8.1k $8.1k 0.00% New
96 Sterling Capital Management LLC 0.00% of their portfolio CHARLOTTE, NC 184184 $5.9k $5.9k 0.00% Reduced -209 -209
97 Allworth Financial LP 0.00% of their portfolio FOLSOM, CA 124124 $4.0k $4.0k 0.00% New
98 IFP Advisors, Inc 0.00% of their portfolio TAMPA, FL 101101 $3.3k $3.3k 0.00% New
99 EverSource Wealth Advisors, LLC 0.00% of their portfolio BIRMINGHAM, AL 8080 $2.6k $2.6k 0.00% New
100 Farther Finance Advisors, LLC 0.00% of their portfolio SAN FRANCISCO, CA 7777 $2.4k $2.4k 0.00% New