Vault-13

Y-MABS THERAPEUTICS INC YMAB

COM · Common Stock · CUSIP 984241109

98 institutional holders +3 vs Q4 2023
23,317,95323.3m shares reported held*
$379.0mreported value*
19 new 26 added 43 reduced 18 sold out net bought ≈ $46.8m (+2.9m 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 ($1.6m this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $16.25. Options: 5 managers hold calls ($747.7k notional), 4 hold puts ($807.7k).

Trends to Q1 2024

Institutional holders

Managers reporting a position, each quarter

050100Q3 22: 100Q4 22: 92Q1 23: 87Q2 23: 96Q3 23: 100Q4 23: 95Q1 24: 9898Q3 22Q1 23Q3 23Q1 24
Numbers
QuarterHolders
Q3 2022100
Q4 202292
Q1 202387
Q2 202396
Q3 2023100
Q4 202395
Q1 202498

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 outQ4 22Q1 23: 46 bought or addedQ1 23: 46 cut or sold outQ1 23Q2 23: 53 bought or addedQ2 23: 41 cut or sold outQ2 23Q3 23: 41 bought or addedQ3 23: 43 cut or sold outQ3 23Q4 23: 44 bought or addedQ4 23: 47 cut or sold outQ4 23Q1 24: 45 bought or addedQ1 24: 61 cut or sold outQ1 24
Numbers
QuarterBought or addedCut or sold out
Q4 20224361
Q1 20234646
Q2 20235341
Q3 20234143
Q4 20234447
Q1 20244561

Calls vs puts

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

CallsPuts
$0$250k$500k$750k$1mQ2 23 calls: $35.6kQ2 23 puts: $10.9kQ2 23P/C 0.30Q3 23 calls: $15.8kQ3 23 puts: $0Q3 23P/C 0.00Q4 23 calls: $16.9kQ4 23 puts: $15.7kQ4 23P/C 0.93Q1 24 calls: $747.7kQ1 24 puts: $807.7kQ1 24P/C 1.08
Numbers
QuarterCallsPutsP/C
Q2 2023$35.6k$10.9k0.30
Q3 2023$15.8k$00.00
Q4 2023$16.9k$15.7k0.93
Q1 2024$747.7k$807.7k1.08

Biggest buyers

Paradigm Biocapital Advisors LP New +2,233,610+2.2m
Point72 Asset Management, L.P. New +1,527,100+1.5m
Pictet Asset Management Holding SA New +746,101+746.1k
Soleus Capital Management, L.P. Added +413,800+413.8k
MILLENNIUM MANAGEMENT LLC Added +261,490+261.5k
WELLINGTON MANAGEMENT GROUP LLP New +146,303+146.3k
DIMENSIONAL FUND ADVISORS LP Added +105,598+105.6k
MORGAN STANLEY Added +74,001+74.0k
JANE STREET GROUP, LLC Added +68,230+68.2k
Squarepoint Ops LLC New +51,937+51.9k

Biggest sellers

Caligan Partners LP Reduced -461,149-461.1k
BOOTHBAY FUND MANAGEMENT, LLC Reduced -347,583-347.6k
D. E. Shaw & Co., Inc. Reduced -255,621-255.6k
LOS ANGELES CAPITAL MANAGEMENT LLC Reduced -228,979-229.0k
Polar Capital Holdings Plc Reduced -225,872-225.9k
ACADIAN ASSET MANAGEMENT LLC Reduced -200,067-200.1k
VANGUARD GROUP INC Reduced -174,721-174.7k
Nuveen Asset Management, LLC Reduced -132,210-132.2k
MARSHALL WACE, LLP Sold out -114,786-114.8k
JACOBS LEVY EQUITY MANAGEMENT, INC Reduced -98,904-98.9k

Biggest calls

SUSQUEHANNA INTERNATIONAL GROUP, LLP New $435.8k26.8k shares
CITADEL ADVISORS LLC Added $172.4k10.6k shares
GROUP ONE TRADING LLC New $110.6k6.8k shares
SIMPLEX TRADING, LLC Added $29.0k1.8k shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. Unchanged $00 shares

Biggest puts

SUSQUEHANNA INTERNATIONAL GROUP, LLP New $439.0k27.0k shares
CITADEL ADVISORS LLC Added $344.7k21.2k shares
SIMPLEX TRADING, LLC Added $24.0k1.5k 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)

Holders, Q1 2024

#ManagerLocationShares Value% of their portfolioChangeShares change
1 BlackRock Inc. 0.00% of their portfolio New York, NY 2,857,2572.9m $46.5m $46.5m 0.00% Reduced -59.8k -59,823
2 Paradigm Biocapital Advisors LP 1.28% of their portfolio NEW YORK, NY 2,233,6102.2m $36.3m $36.3m 1.28% New
3 Sofinnova Investments, Inc. 2.11% of their portfolio Menlo Park, CA 2,194,2782.2m $35.7m $35.7m 2.11% Unchanged
4 VANGUARD GROUP INC 0.00% of their portfolio Valley Forge, PA 2,069,5172.1m $33.7m $33.7m 0.00% Reduced -174.7k -174,721
5 Polar Capital Holdings Plc 0.16% of their portfolio London, X0 1,831,0001.8m $29.8m $29.8m 0.16% Reduced -225.9k -225,872
6 Point72 Asset Management, L.P. 0.07% of their portfolio STAMFORD, CT 1,527,1001.5m $24.8m $24.8m 0.07% New
7 D. E. Shaw & Co., Inc. 0.02% of their portfolio New York, NY 1,068,1591.1m $17.4m $17.4m 0.02% Reduced -255.6k -255,621
8 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 751,073751.1k $12.2m $12.2m 0.00% Reduced -10.5k -10,459
9 Pictet Asset Management Holding SA 0.01% of their portfolio CAROUGE, V8 746,101746.1k $12.1m $12.1m 0.01% New
10 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 742,749742.7k $12.1m $12.1m 0.00% Added +4.2k +4,201
11 ACADIAN ASSET MANAGEMENT LLC 0.03% of their portfolio Boston, MA 602,314602.3k $9.8m $9.8m 0.03% Reduced -200.1k -200,067
12 Caligan Partners LP 2.52% of their portfolio NEW YORK, NY 587,276587.3k $9.5m $9.5m 2.52% Reduced -461.1k -461,149
13 Soleus Capital Management, L.P. 0.82% of their portfolio GREENWICH, CT 570,982571.0k $9.3m $9.3m 0.82% Added +413.8k +413,800
14 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 564,291564.3k $9.2m $9.2m 0.00% Added +74.0k +74,001
15 DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio AUSTIN, TX 418,699418.7k $6.8m $6.8m 0.00% Added +105.6k +105,598
16 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 365,536365.5k $5.9m $5.9m 0.00% Reduced -32.4k -32,415
17 BOOTHBAY FUND MANAGEMENT, LLC 0.16% of their portfolio NEW YORK, NY 346,511346.5k $5.6m $5.6m 0.16% Reduced -347.6k -347,583
18 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 321,715321.7k $5.2m $5.2m 0.00% Reduced -3.7k -3,724
19 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 282,551282.6k $4.6m $4.6m 0.00% Added +261.5k +261,490
20 Nuveen Asset Management, LLC 0.00% of their portfolio CHICAGO, IL 267,730267.7k $4.4m $4.4m 0.00% Reduced -132.2k -132,210
21 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio SAN FRANCISCO, CA 250,225250.2k $4.1m $4.1m 0.00% Added +2.7k +2,719
22 Connor, Clark & Lunn Investment Management Ltd. 0.01% of their portfolio VANCOUVER, A1 202,074202.1k $3.3m $3.3m 0.01% Added +32.1k +32,071
23 JACOBS LEVY EQUITY MANAGEMENT, INC 0.01% of their portfolio FLORHAM PARK, NJ 154,016154.0k $2.5m $2.5m 0.01% Reduced -98.9k -98,904
24 WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio Boston, MA 146,303146.3k $2.4m $2.4m 0.00% New
25 TWO SIGMA ADVISERS, LP 0.00% of their portfolio NEW YORK, NY 130,400130.4k $2.1m $2.1m 0.00% Reduced -34.6k -34,600
26 LOS ANGELES CAPITAL MANAGEMENT LLC 0.01% of their portfolio LOS ANGELES, CA 127,551127.6k $2.1m $2.1m 0.01% Reduced -229.0k -228,979
27 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 118,301118.3k $1.9m $1.9m 0.00% Reduced -19.2k -19,199
28 RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio NEW YORK, NY 115,300115.3k $1.9m $1.9m 0.00% Reduced -59.5k -59,500
29 Bank of New York Mellon Corp 0.00% of their portfolio NEW YORK, NY 111,980112.0k $1.8m $1.8m 0.00% Reduced -8.0k -7,987
30 TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio NEW YORK, NY 104,302104.3k $1.7m $1.7m 0.00% Added +42.5k +42,463
31 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 100,518100.5k $1.6m $1.6m 0.00% Added +68.2k +68,230
32 RICE HALL JAMES & ASSOCIATES, LLC 0.08% of their portfolio San Diego, CA 86,14686.1k $1.4m $1.4m 0.08% Added +633 +633
33 MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 0.00% of their portfolio Boston, MA 79,44279.4k $1.3m $1.3m 0.00% Reduced -175 -175
34 Cubist Systematic Strategies, LLC 0.01% of their portfolio STAMFORD, CT 77,78677.8k $1.3m $1.3m 0.01% Added +40.7k +40,674
35 Campbell & CO Investment Adviser LLC 0.11% of their portfolio BALTIMORE, MD 76,44076.4k $1.2m $1.2m 0.11% Reduced -6.0k -5,951
36 BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.02% of their portfolio HOUSTON, TX 65,60065.6k $1.1m $1.1m 0.02% Reduced -30.0k -30,000
37 PRUDENTIAL FINANCIAL INC 0.00% of their portfolio NEWARK, NJ 65,16065.2k $1.1m $1.1m 0.00% Reduced -48.5k -48,490
38 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 62,33662.3k $1.0m $1.0m 0.00% Reduced -20.4k -20,392
39 ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio NASHVILLE, TN 61,92061.9k $1.0m $1.0m 0.00% Reduced -810 -810
40 RHUMBLINE ADVISERS 0.00% of their portfolio BOSTON, MA 55,22455.2k $897.9k $897.9k 0.00% Added +1.2k +1,211
41 Squarepoint Ops LLC 0.00% of their portfolio NEW YORK, NY 51,93751.9k $844.5k $844.5k 0.00% New
42 AMERICAN CENTURY COMPANIES INC 0.00% of their portfolio KANSAS CITY, MO 45,79945.8k $744.7k $744.7k 0.00% Added +17.4k +17,355
43 FEDERATED HERMES, INC. 0.00% of their portfolio PITTSBURGH, PA 44,56544.6k $724.6k $724.6k 0.00% Added +91 +91
44 SAPIENT CAPITAL LLC 0.02% of their portfolio INDIANAPOLIS, IN 43,70043.7k $710.6k $710.6k 0.02% Unchanged
45 AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio Greenwich, CT 37,84137.8k $615.3k $615.3k 0.00% New
46 UBS Group AG 0.00% of their portfolio ZURICH, V8 37,54737.5k $610.5k $610.5k 0.00% Added +803 +803
47 Ziegler Capital Management, LLC 0.02% of their portfolio CHICAGO, IL 35,46135.5k $576.6k $576.6k 0.02% New
48 STRS OHIO 0.00% of their portfolio COLUMBUS, OH 35,10035.1k $570.0k $570.0k 0.00% Reduced -43.6k -43,600
49 STATE OF WISCONSIN INVESTMENT BOARD 0.00% of their portfolio MADISON, WI 35,00335.0k $569.1k $569.1k 0.00% Reduced -41.9k -41,900
50 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 34,87534.9k $567.1k $567.1k 0.00% Reduced -299 -299
51 Boston Partners 0.00% of their portfolio BOSTON, MA 34,16534.2k $555.5k $555.5k 0.00% New
52 FRANKLIN RESOURCES INC 0.00% of their portfolio San Mateo, CA 32,98133.0k $536.3k $536.3k 0.00% Added +17.2k +17,243
53 FMR LLC 0.00% of their portfolio BOSTON, MA 27,96628.0k $454.7k $454.7k 0.00% Reduced -8.9k -8,876
54 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 25,73825.7k $418.5k $418.5k 0.00% Reduced -24.7k -24,699
55 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio BALA CYNWYD, PA 22,41522.4k $364.5k $364.5k 0.00% Added +5.8k +5,775
56 PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio BALTIMORE, MD 21,15821.2k $345.0k $345.0k 0.00% Added +1.7k +1,657
57 MetLife Investment Management, LLC 0.00% of their portfolio Whippany, NJ 20,08620.1k $326.6k $326.6k 0.00% Unchanged
58 EXCHANGE TRADED CONCEPTS, LLC 0.01% of their portfolio Oklahoma City, OK 18,99619.0k $308.9k $308.9k 0.01% Reduced -9.1k -9,099
59 CAXTON ASSOCIATES LP 0.02% of their portfolio NEW YORK, NY 18,80718.8k $305.8k $305.8k 0.02% New
60 DEUTSCHE BANK AG\ 0.00% of their portfolio FRANKFURT AM MAIN, 2M 18,63918.6k $303.1k $303.1k 0.00% Reduced -25 -25
61 AMERICAN INTERNATIONAL GROUP, INC. 0.00% of their portfolio New York, NY 18,13218.1k $294.8k $294.8k 0.00% Reduced -155 -155
62 Verition Fund Management LLC 0.00% of their portfolio GREENWICH, CT 16,58816.6k $269.7k $269.7k 0.00% New
63 HRT FINANCIAL LP 0.00% of their portfolio NEW YORK, NY 16,21616.2k $263.0k $263.0k 0.00% New
64 Point72 (DIFC) Ltd 0.02% of their portfolio DUBAI, C0 14,76414.8k $240.1k $240.1k 0.02% First filing
65 MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio Toronto, A6 14,67514.7k $238.6k $238.6k 0.00% Reduced -907 -907
66 STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.00% of their portfolio TALLAHASSEE, FL 14,30614.3k $71.7k $71.7k 0.00% Reduced -290 -290
67 PRINCIPAL FINANCIAL GROUP INC 0.00% of their portfolio DES MOINES, IA 13,72913.7k $223.2k $223.2k 0.00% Reduced -1.1k -1,100
68 Invesco Ltd. 0.00% of their portfolio ATLANTA, GA 13,28813.3k $216.1k $216.1k 0.00% Added +27 +27
69 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 13,13713.1k $213.6k $213.6k 0.00% Reduced -23.4k -23,376
70 NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio ALBANY, NY 12,61312.6k $205.1k $205.1k 0.00% Added +6.4k +6,374
71 VOYA INVESTMENT MANAGEMENT LLC 0.00% of their portfolio ATLANTA, GA 12,53912.5k $203.9k $203.9k 0.00% Reduced -3.1k -3,066
72 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 12,01512.0k $195.4k $195.4k 0.00% Added +1.6k +1,582
73 SG Americas Securities, LLC 0.00% of their portfolio NEW YORK, NY 11,96312.0k $195.0k $195.0k 0.00% Reduced -9.6k -9,596
74 China Universal Asset Management Co., Ltd. 0.02% of their portfolio SHANGHAI, F4 8,3908.4k $136.4k $136.4k 0.02% Added +3.3k +3,340
75 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 6,7456.7k $109.7k $109.7k 0.00% Added +734 +734
76 Point72 Asia (Singapore) Pte. Ltd. 0.03% of their portfolio SINGAPORE, U0 6,0196.0k $97.9k $97.9k 0.03% New
77 Quantbot Technologies LP 0.00% of their portfolio NEW YORK, NY 4,5324.5k $73.7k $73.7k 0.00% New
78 Ameritas Investment Partners, Inc. 0.00% of their portfolio LINCOLN, NE 3,7013.7k $60.2k $60.2k 0.00% Added +1.1k +1,056
79 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio WEST SACRAMENTO, CA 3,7003.7k $60.2k $60.2k 0.00% Reduced -2.4k -2,356
80 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 3,3863.4k $55.1k $55.1k 0.00% Reduced -3.3k -3,300
81 Legal & General Group Plc 0.00% of their portfolio London, X0 3,3113.3k $53.8k $53.8k 0.00% Reduced -359 -359
82 Aquatic Capital Management LLC 0.00% of their portfolio CHICAGO, IL 3,3003.3k $53.7k $53.7k 0.00% New
83 Metropolitan Life Insurance Co/NY 0.00% of their portfolio New York, NY 2,0552.1k $33.4k $33.4k 0.00% Unchanged
84 DANSKE BANK A/S 0.00% of their portfolio COPENHAGEN V, G7 1,2761.3k $20.7k $20.7k 0.00% First filing
85 AMALGAMATED BANK 0.00% of their portfolio NEW YORK, NY 1,2171.2k $20.0k $20.0k 0.00% Reduced -2.9k -2,904
86 TUCKER ASSET MANAGEMENT LLC 0.00% of their portfolio LITTLETON, CO 1,2001.2k $19.5k $19.5k 0.00% New
87 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 837837 $13.0k $13.0k 0.00% Reduced -9.5k -9,540
88 HighMark Wealth Management LLC 0.00% of their portfolio ST. PAUL, MN 220220 $3.6k $3.6k 0.00% Unchanged
89 Daiwa Securities Group Inc. 0.00% of their portfolio CHIYODA-KU,TOKYO, M0 162162 $3.0k $3.0k 0.00% New
90 NISA INVESTMENT ADVISORS, LLC 0.00% of their portfolio ST. LOUIS, MO 7878 $1.3k $1.3k 0.00% Added +38 +38
91 CWM, LLC 0.00% of their portfolio OMAHA, NE 6666 $1.0k $1.0k 0.00% Added +1 +1
92 Eagle Bay Advisors LLC 0.00% of their portfolio NEW YORK, NY 5050 $813 $813 0.00% Unchanged
93 GAMMA Investing LLC 0.00% of their portfolio FOSTER CITY, CA 2626 $423 $423 0.00% New
94 Russell Investments Group, Ltd. 0.00% of their portfolio Seattle, WA 2525 $407 $407 0.00% Reduced -16.9k -16,903
95 Avior Wealth Management, LLC 0.00% of their portfolio OMAHA, NE 88 $130 $130 0.00% New
96 Farther Finance Advisors, LLC 0.00% of their portfolio SAN FRANCISCO, CA 11 $16 $16 0.00% Unchanged
97 CONCOURSE FINANCIAL GROUP SECURITIES, INC. 0.00% of their portfolio BIRMINGHAM, AL 00 $0 $0 0.00% Unchanged
98 NOMURA ASSET MANAGEMENT CO LTD 0.00% of their portfolio TOKYO, M0 00 $0 $0 0.00% New