Vault-13

Y-MABS THERAPEUTICS INC YMAB

COM · Common Stock · CUSIP 984241109

107 institutional holders +9 vs Q2 2024
25,766,65225.8m shares reported held*
$338.9mreported value*
18 new 37 added 28 reduced 10 sold out net bought ≈ $17.1m (+1.3m 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 ($20.9k this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $13.15. Options: 5 managers hold calls ($563.2k notional), 2 hold puts ($5.3k).

Trends to Q3 2024

Institutional holders

Managers reporting a position, each quarter

050100150Q3 22: 100Q4 22: 92Q1 23: 87Q2 23: 96Q3 23: 100Q4 23: 95Q1 24: 98Q2 24: 98Q3 24: 107107Q3 22Q1 23Q3 23Q1 24Q3 24
Numbers
QuarterHolders
Q3 2022100
Q4 202292
Q1 202387
Q2 202396
Q3 2023100
Q4 202395
Q1 202498
Q2 202498
Q3 2024107

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
1000100Q4 22: 43 bought or addedQ4 22: 61 cut or sold outQ1 23: 46 bought or addedQ1 23: 46 cut or sold outQ1 23Q2 23: 53 bought or addedQ2 23: 41 cut or sold outQ3 23: 41 bought or addedQ3 23: 43 cut or sold outQ3 23Q4 23: 44 bought or addedQ4 23: 47 cut or sold outQ1 24: 45 bought or addedQ1 24: 61 cut or sold outQ1 24Q2 24: 49 bought or addedQ2 24: 51 cut or sold outQ3 24: 55 bought or addedQ3 24: 38 cut or sold outQ3 24
Numbers
QuarterBought or addedCut or sold out
Q4 20224361
Q1 20234646
Q2 20235341
Q3 20234143
Q4 20234447
Q1 20244561
Q2 20244951
Q3 20245538

Calls vs puts

Options held, notional value, last 4 quarters. P/C = puts ÷ calls

CallsPuts
$0$250k$500k$750k$1mQ4 23 calls: $16.9kQ4 23 puts: $15.7kQ4 23P/C 0.93Q1 24 calls: $747.7kQ1 24 puts: $807.7kQ1 24P/C 1.08Q2 24 calls: $329.5kQ2 24 puts: $3.6kQ2 24P/C 0.01Q3 24 calls: $563.2kQ3 24 puts: $5.3kQ3 24P/C 0.01
Numbers
QuarterCallsPutsP/C
Q4 2023$16.9k$15.7k0.93
Q1 2024$747.7k$807.7k1.08
Q2 2024$329.5k$3.6k0.01
Q3 2024$563.2k$5.3k0.01

Biggest buyers

Logos Global Management LP New +800,000+800.0k
Caligan Partners LP Added +613,175+613.2k
STATE STREET CORP Added +405,169+405.2k
Paradigm Biocapital Advisors LP Added +215,752+215.8k
BOOTHBAY FUND MANAGEMENT, LLC Added +188,069+188.1k
GOLDMAN SACHS GROUP INC Added +83,861+83.9k
VANGUARD GROUP INC Added +78,024+78.0k
BARCLAYS PLC Added +56,244+56.2k
GEODE CAPITAL MANAGEMENT, LLC Added +47,846+47.8k
MORGAN STANLEY Added +45,582+45.6k

Biggest sellers

MILLENNIUM MANAGEMENT LLC Reduced -278,198-278.2k
Point72 Asset Management, L.P. Reduced -263,562-263.6k
Soleus Capital Management, L.P. Reduced -248,000-248.0k
ACADIAN ASSET MANAGEMENT LLC Reduced -217,398-217.4k
D. E. Shaw & Co., Inc. Reduced -138,921-138.9k
MASSACHUSETTS FINANCIAL SERVICES CO /MA/ Sold out -82,202-82.2k
Connor, Clark & Lunn Investment Management Ltd. Reduced -81,830-81.8k
JANE STREET GROUP, LLC Reduced -63,023-63.0k
Balyasny Asset Management L.P. Sold out -43,973-44.0k
RENAISSANCE TECHNOLOGIES LLC Reduced -36,737-36.7k

Biggest calls

CITADEL ADVISORS LLC Added $266.9k20.3k shares
JANE STREET GROUP, LLC New $263.0k20.0k shares
SIMPLEX TRADING, LLC Added $28.0k2.2k shares
GROUP ONE TRADING LLC Reduced $5.3k400 shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. Unchanged $00 shares

Biggest puts

CITADEL ADVISORS LLC Added $5.3k400 shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. Unchanged $00 shares

Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.

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
ACORN BIOVENTURES, L.P. 13G · passive investor -0.8 pts · filed 2025-08-20 6.2% -0.8 pts 2.8m 2025-08-20

Fell to 5% or below in the last year: HBM Healthcare Investments (Cayman) Ltd. (0.0%, 2025-11-14), Beryl Capital Management LLC (0.0%, 2025-11-14), Caligan Partners LP (0.0%, 2025-11-14), Paradigm Biocapital Advisors LP (0.0%, 2025-11-14), GLAZER CAPITAL, LLC (0.0%, 2025-11-13)

Holders, Q3 2024

#ManagerLocationShares Value% of their portfolioChangeShares change
1 Paradigm Biocapital Advisors LP 1.88% of their portfolio NEW YORK, NY 4,086,3464.1m $53.7m $53.7m 1.88% Added +215.8k +215,752
2 BlackRock, Inc. 0.00% of their portfolio New York, NY 3,025,2353.0m $39.8m $39.8m 0.00% First filing
3 Sofinnova Investments, Inc. 2.39% of their portfolio Menlo Park, CA 2,194,2782.2m $28.9m $28.9m 2.39% Unchanged
4 VANGUARD GROUP INC 0.00% of their portfolio Valley Forge, PA 2,035,3632.0m $26.8m $26.8m 0.00% Added +78.0k +78,024
5 Polar Capital Holdings Plc 0.14% of their portfolio London, X0 1,831,0001.8m $24.1m $24.1m 0.14% Unchanged
6 Cormorant Asset Management, LP 1.01% of their portfolio BOSTON, MA 1,450,0001.4m $19.1m $19.1m 1.01% Unchanged
7 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 1,209,7811.2m $15.9m $15.9m 0.00% Added +405.2k +405,169
8 Caligan Partners LP 4.98% of their portfolio NEW YORK, NY 1,195,2531.2m $15.7m $15.7m 4.98% Added +613.2k +613,175
9 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 813,489813.5k $10.7m $10.7m 0.00% Added +47.8k +47,846
10 Logos Global Management LP 1.18% of their portfolio San Francisco, CA 800,000800.0k $10.5m $10.5m 1.18% New
11 D. E. Shaw & Co., Inc. 0.01% of their portfolio New York, NY 787,536787.5k $10.4m $10.4m 0.01% Reduced -138.9k -138,921
12 Pictet Asset Management Holding SA 0.01% of their portfolio CAROUGE, V8 687,980688.0k $9.0m $9.0m 0.01% Added +28.3k +28,308
13 BOOTHBAY FUND MANAGEMENT, LLC 0.22% of their portfolio NEW YORK, NY 557,429557.4k $7.3m $7.3m 0.22% Added +188.1k +188,069
14 DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio AUSTIN, TX 477,664477.7k $6.3m $6.3m 0.00% Reduced -6.8k -6,767
15 Soleus Capital Management, L.P. 0.44% of their portfolio GREENWICH, CT 399,982400.0k $5.3m $5.3m 0.44% Reduced -248.0k -248,000
16 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 337,287337.3k $4.4m $4.4m 0.00% Added +19.5k +19,482
17 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio SAN FRANCISCO, CA 279,577279.6k $3.7m $3.7m 0.00% Added +24.0k +23,982
18 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 274,547274.5k $3.6m $3.6m 0.00% Added +12.8k +12,803
19 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 248,722248.7k $3.3m $3.3m 0.00% Added +45.6k +45,582
20 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 222,600222.6k $2.9m $2.9m 0.00% Added +83.9k +83,861
21 Squarepoint Ops LLC 0.01% of their portfolio NEW YORK, NY 154,931154.9k $2.0m $2.0m 0.01% Added +28.5k +28,542
22 JACOBS LEVY EQUITY MANAGEMENT, INC 0.01% of their portfolio FLORHAM PARK, NJ 149,681149.7k $2.0m $2.0m 0.01% Unchanged
23 WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio Boston, MA 136,714136.7k $1.8m $1.8m 0.00% Reduced -23.7k -23,730
24 Nuveen Asset Management, LLC 0.00% of their portfolio CHICAGO, IL 112,483112.5k $1.5m $1.5m 0.00% Unchanged
25 RICE HALL JAMES & ASSOCIATES, LLC 0.08% of their portfolio San Diego, CA 108,684108.7k $1.4m $1.4m 0.08% Added +18.9k +18,949
26 ACADIAN ASSET MANAGEMENT LLC 0.00% of their portfolio Boston, MA 105,777105.8k $1.4m $1.4m 0.00% Reduced -217.4k -217,398
27 Point72 Asset Management, L.P. 0.00% of their portfolio STAMFORD, CT 95,38395.4k $1.3m $1.3m 0.00% Reduced -263.6k -263,562
28 Connor, Clark & Lunn Investment Management Ltd. 0.01% of their portfolio VANCOUVER, A1 94,22594.2k $1.2m $1.2m 0.01% Reduced -81.8k -81,830
29 Bank of New York Mellon Corp 0.00% of their portfolio NEW YORK, NY 91,55591.6k $1.2m $1.2m 0.00% Reduced -29.4k -29,399
30 TWO SIGMA ADVISERS, LP 0.00% of their portfolio NEW YORK, NY 85,00085.0k $1.1m $1.1m 0.00% Reduced -12.7k -12,700
31 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 79,72079.7k $1.0m $1.0m 0.00% Added +35.0k +35,037
32 BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.02% of their portfolio HOUSTON, TX 76,00076.0k $999.4k $999.4k 0.02% Unchanged
33 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 71,58671.6k $941.4k $941.4k 0.00% Reduced -278.2k -278,198
34 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 69,22269.2k $910.3k $910.3k 0.00% Added +56.2k +56,244
35 FRANKLIN RESOURCES INC 0.00% of their portfolio San Mateo, CA 67,28967.3k $978.4k $978.4k 0.00% Added +312 +312
36 TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio NEW YORK, NY 67,14167.1k $882.9k $882.9k 0.00% Added +5.8k +5,825
37 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 60,67060.7k $797.8k $797.8k 0.00% Added +5.7k +5,708
38 Swiss National Bank 0.00% of their portfolio ZURICH, V8 60,30060.3k $792.9k $792.9k 0.00% Unchanged
39 Campbell & CO Investment Adviser LLC 0.06% of their portfolio BALTIMORE, MD 56,59056.6k $744.2k $744.2k 0.06% Reduced -5.5k -5,456
40 STATE OF WISCONSIN INVESTMENT BOARD 0.00% of their portfolio MADISON, WI 55,66855.7k $732.0k $732.0k 0.00% Added +14.5k +14,461
41 ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio NASHVILLE, TN 54,78054.8k $720.4k $720.4k 0.00% Reduced -3.4k -3,360
42 RHUMBLINE ADVISERS 0.00% of their portfolio BOSTON, MA 52,31552.3k $687.9k $687.9k 0.00% Reduced -2.1k -2,053
43 UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio NEW YORK, NY 44,59144.6k $586.4k $586.4k 0.00% Reduced -13.7k -13,708
44 UBS Group AG 0.00% of their portfolio ZURICH, V8 44,58644.6k $586.3k $586.3k 0.00% Added +25.6k +25,582
45 FEDERATED HERMES, INC. 0.00% of their portfolio PITTSBURGH, PA 44,47444.5k $584.8k $584.8k 0.00% Unchanged
46 SAPIENT CAPITAL LLC 0.01% of their portfolio INDIANAPOLIS, IN 43,70043.7k $574.7k $574.7k 0.01% Unchanged
47 STRS OHIO 0.00% of their portfolio COLUMBUS, OH 43,40043.4k $570.7k $570.7k 0.00% Unchanged
48 FMR LLC 0.00% of their portfolio BOSTON, MA 36,41636.4k $478.9k $478.9k 0.00% Added +6.8k +6,822
49 Rafferty Asset Management, LLC 0.00% of their portfolio New York, NY 35,07735.1k $461.3k $461.3k 0.00% New
50 ALPS ADVISORS INC 0.00% of their portfolio Denver, CO 34,23134.2k $450.1k $450.1k 0.00% Added +7 +7
51 Legal & General Group Plc 0.00% of their portfolio London, X0 33,80433.8k $444.5k $444.5k 0.00% Added +1.1k +1,114
52 PRUDENTIAL FINANCIAL INC 0.00% of their portfolio NEWARK, NJ 30,62530.6k $402.7k $402.7k 0.00% Reduced -32.1k -32,100
53 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio WEST SACRAMENTO, CA 29,48129.5k $387.7k $387.7k 0.00% Reduced -968 -968
54 RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio NEW YORK, NY 27,90027.9k $366.9k $366.9k 0.00% Reduced -36.7k -36,737
55 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 27,35927.4k $359.8k $359.8k 0.00% Added +18.4k +18,390
56 VIRTUS ADVISERS, LLC 0.17% of their portfolio HARTFORD, CT 27,33227.3k $359.4k $359.4k 0.17% Unchanged
57 AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio Greenwich, CT 27,24727.2k $358.3k $358.3k 0.00% Added +5.3k +5,321
58 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 26,41926.4k $347.4k $347.4k 0.00% Reduced -537 -537
59 PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio BALTIMORE, MD 22,53722.5k $297.0k $297.0k 0.00% Added +258 +258
60 MetLife Investment Management, LLC 0.00% of their portfolio Whippany, NJ 22,14122.1k $291.2k $291.2k 0.00% Unchanged
61 DEUTSCHE BANK AG\ 0.00% of their portfolio FRANKFURT AM MAIN, 2M 21,19421.2k $278.7k $278.7k 0.00% Reduced -1.3k -1,342
62 PRINCIPAL FINANCIAL GROUP INC 0.00% of their portfolio DES MOINES, IA 20,29420.3k $266.9k $266.9k 0.00% New
63 MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio CAUSEWAY BAY, K3 20,27320.3k $266.6k $266.6k 0.00% Added +2.4k +2,376
64 Corebridge Financial, Inc. 0.00% of their portfolio HOUSTON, TX 19,66619.7k $258.6k $258.6k 0.00% Reduced -121 -121
65 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 18,93618.9k $249.0k $249.0k 0.00% Reduced -63.0k -63,023
66 EntryPoint Capital, LLC 0.13% of their portfolio NEW YORK, NY 17,07117.1k $224.5k $224.5k 0.13% Added +10.9k +10,919
67 JANUS HENDERSON GROUP PLC 0.00% of their portfolio LONDON, X0 16,30016.3k $214.2k $214.2k 0.00% Unchanged
68 Empire Financial Management Company, LLC 0.06% of their portfolio NEW YORK, NY 16,00016.0k $210.4k $210.4k 0.06% New
69 MARSHALL WACE, LLP 0.00% of their portfolio LONDON, X0 15,50915.5k $203.9k $203.9k 0.00% New
70 STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.00% of their portfolio TALLAHASSEE, FL 14,59614.6k $191.9k $191.9k 0.00% Unchanged
71 Invesco Ltd. 0.00% of their portfolio ATLANTA, GA 14,55614.6k $191.4k $191.4k 0.00% Added +329 +329
72 HRT FINANCIAL LP 0.00% of their portfolio NEW YORK, NY 14,26014.3k $187.0k $187.0k 0.00% New
73 MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio Toronto, A6 14,08614.1k $185.2k $185.2k 0.00% Reduced -336 -336
74 SG Americas Securities, LLC 0.00% of their portfolio NEW YORK, NY 13,56613.6k $178.0k $178.0k 0.00% New
75 EXCHANGE TRADED CONCEPTS, LLC 0.00% of their portfolio Oklahoma City, OK 12,87212.9k $169.3k $169.3k 0.00% Reduced -1.6k -1,617
76 VOYA INVESTMENT MANAGEMENT LLC 0.00% of their portfolio ATLANTA, GA 12,43312.4k $163.5k $163.5k 0.00% Reduced -168 -168
77 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 11,32711.3k $148.9k $148.9k 0.00% Reduced -449 -449
78 XTX Topco Ltd 0.01% of their portfolio LONDON, X0 11,30011.3k $148.6k $148.6k 0.01% Reduced -13.3k -13,321
79 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 10,35010.3k $136.0k $136.0k 0.00% Added +6.9k +6,891
80 INTECH INVESTMENT MANAGEMENT LLC 0.00% of their portfolio WEST PALM BEACH, FL 10,14910.1k $133.5k $133.5k 0.00% New
81 NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio ALBANY, NY 10,11010.1k $132.9k $132.9k 0.00% Reduced -2.5k -2,500
82 China Universal Asset Management Co., Ltd. 0.01% of their portfolio SHANGHAI, F4 8,5728.6k $112.7k $112.7k 0.01% Added +3.4k +3,416
83 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 5,3905.4k $70.9k $70.9k 0.00% Reduced -1.5k -1,512
84 LAZARD ASSET MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 4,2184.2k $55.0k $55.0k 0.00% New
85 Ameritas Investment Partners, Inc. 0.00% of their portfolio LINCOLN, NE 3,7013.7k $48.7k $48.7k 0.00% Unchanged
86 Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% of their portfolio ZURICH, V8 3,3243.3k $43.7k $43.7k 0.00% New
87 CANADA LIFE ASSURANCE Co 0.00% of their portfolio WINNIPEG, A2 3,0483.0k $40.0k $40.0k 0.00% Unchanged
88 Mirae Asset Global Investments Co., Ltd. 0.00% of their portfolio SEOUL, M5 1,6121.6k $20.9k $20.9k 0.00% Added +302 +302
89 AMALGAMATED BANK 0.00% of their portfolio NEW YORK, NY 1,2171.2k $16.0k $16.0k 0.00% Unchanged
90 AlphaQuest LLC 0.00% of their portfolio New York, NY 387387 $5.1k $5.1k 0.00% Added +386 +386
91 BESSEMER GROUP INC 0.00% of their portfolio WOODBRIDGE, NJ 180180 $2.0k $2.0k 0.00% New
92 NISA INVESTMENT ADVISORS, LLC 0.00% of their portfolio ST. LOUIS, MO 164164 $2.2k $2.2k 0.00% Added +111 +111
93 Daiwa Securities Group Inc. 0.00% of their portfolio CHIYODA-KU,TOKYO, M0 162162 $2.0k $2.0k 0.00% Unchanged
94 CWM, LLC 0.00% of their portfolio OMAHA, NE 7575 $1.0k $1.0k 0.00% Added +8 +8
95 Eagle Bay Advisors LLC 0.00% of their portfolio NEW YORK, NY 5050 $658 $658 0.00% Unchanged
96 GAMMA Investing LLC 0.00% of their portfolio FOSTER CITY, CA 4040 $526 $526 0.00% Added +35 +35
97 Sterling Capital Management LLC 0.00% of their portfolio CHARLOTTE, NC 3838 $500 $500 0.00% First filing
98 Lindbrook Capital, LLC 0.00% of their portfolio CALABASAS, CA 3232 $421 $421 0.00% New
99 Smartleaf Asset Management LLC 0.00% of their portfolio BOSTON, MA 3131 $401 $401 0.00% New
100 ROTHSCHILD INVESTMENT LLC 0.00% of their portfolio CHICAGO, IL 2525 $329 $329 0.00% New