Vault-13

Y-MABS THERAPEUTICS INC YMAB

COM · Common Stock · CUSIP 984241109

98 institutional holders +0 vs Q1 2024
24,369,70324.4m shares reported held*
$294.4mreported value*
15 new 34 added 35 reduced 16 sold out net bought ≈ $11.6m (+958.9k 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 ($96.5k this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $12.08. Options: 4 managers hold calls ($329.5k notional), 2 hold puts ($3.6k).

Trends to Q2 2024

Institutional holders

Managers reporting a position, each quarter

050100Q3 22: 100Q4 22: 92Q1 23: 87Q2 23: 96Q3 23: 100Q4 23: 95Q1 24: 98Q2 24: 9898Q3 22Q1 23Q3 23Q1 24Q2 24
Numbers
QuarterHolders
Q3 2022100
Q4 202292
Q1 202387
Q2 202396
Q3 2023100
Q4 202395
Q1 202498
Q2 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 outQ2 23: 53 bought or addedQ2 23: 41 cut or sold outQ2 23Q3 23: 41 bought or addedQ3 23: 43 cut or sold outQ4 23: 44 bought or addedQ4 23: 47 cut or sold outQ4 23Q1 24: 45 bought or addedQ1 24: 61 cut or sold outQ2 24: 49 bought or addedQ2 24: 51 cut or sold outQ2 24
Numbers
QuarterBought or addedCut or sold out
Q4 20224361
Q1 20234646
Q2 20235341
Q3 20234143
Q4 20234447
Q1 20244561
Q2 20244951

Calls vs puts

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

CallsPuts
$0$250k$500k$750k$1mQ3 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 1.08Q2 24 calls: $329.5kQ2 24 puts: $3.6kQ2 24P/C 0.01
Numbers
QuarterCallsPutsP/C
Q3 2023$15.8k$00.00
Q4 2023$16.9k$15.7k0.93
Q1 2024$747.7k$807.7k1.08
Q2 2024$329.5k$3.6k0.01

Biggest buyers

Paradigm Biocapital Advisors LP Added +1,636,984+1.6m
Cormorant Asset Management, LP New +1,450,000+1.4m
CITADEL ADVISORS LLC Added +143,443+143.4k
BlackRock Inc. Added +81,461+81.5k
Soleus Capital Management, L.P. Added +77,000+77.0k
Squarepoint Ops LLC Added +74,452+74.5k
MILLENNIUM MANAGEMENT LLC Added +67,233+67.2k
DIMENSIONAL FUND ADVISORS LP Added +65,732+65.7k
Swiss National Bank New +60,300+60.3k
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC New +58,299+58.3k

Biggest sellers

Point72 Asset Management, L.P. Reduced -1,168,155-1.2m
MORGAN STANLEY Reduced -361,151-361.2k
ACADIAN ASSET MANAGEMENT LLC Reduced -279,139-279.1k
GOLDMAN SACHS GROUP INC Reduced -226,797-226.8k
Nuveen Asset Management, LLC Reduced -155,247-155.2k
D. E. Shaw & Co., Inc. Reduced -141,702-141.7k
LOS ANGELES CAPITAL MANAGEMENT LLC Sold out -127,551-127.6k
VANGUARD GROUP INC Reduced -112,178-112.2k
Pictet Asset Management Holding SA Reduced -86,429-86.4k
Cubist Systematic Strategies, LLC Reduced -71,189-71.2k

Biggest calls

CITADEL ADVISORS LLC Added $234.4k19.4k shares
GROUP ONE TRADING LLC Unchanged $82.1k6.8k shares
SIMPLEX TRADING, LLC Reduced $13.0k1.1k shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. Unchanged $00 shares

Biggest puts

CITADEL ADVISORS LLC Reduced $3.6k300 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, Q2 2024

#ManagerLocationShares Value% of their portfolioChangeShares change
1 Paradigm Biocapital Advisors LP 1.79% of their portfolio NEW YORK, NY 3,870,5943.9m $46.8m $46.8m 1.79% Added +1.6m +1,636,984
2 BlackRock Inc. 0.00% of their portfolio New York, NY 2,938,7182.9m $35.5m $35.5m 0.00% Added +81.5k +81,461
3 Sofinnova Investments, Inc. 1.67% of their portfolio Menlo Park, CA 2,194,2782.2m $26.5m $26.5m 1.67% Unchanged
4 VANGUARD GROUP INC 0.00% of their portfolio Valley Forge, PA 1,957,3392.0m $23.6m $23.6m 0.00% Reduced -112.2k -112,178
5 Polar Capital Holdings Plc 0.13% of their portfolio London, X0 1,831,0001.8m $22.1m $22.1m 0.13% Unchanged
6 Cormorant Asset Management, LP 1.02% of their portfolio BOSTON, MA 1,450,0001.4m $17.5m $17.5m 1.02% New
7 D. E. Shaw & Co., Inc. 0.02% of their portfolio New York, NY 926,457926.5k $11.2m $11.2m 0.02% Reduced -141.7k -141,702
8 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 804,612804.6k $9.7m $9.7m 0.00% Added +53.5k +53,539
9 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 765,643765.6k $9.3m $9.3m 0.00% Added +22.9k +22,894
10 Pictet Asset Management Holding SA 0.01% of their portfolio CAROUGE, V8 659,672659.7k $8.0m $8.0m 0.01% Reduced -86.4k -86,429
11 Soleus Capital Management, L.P. 0.69% of their portfolio GREENWICH, CT 647,982648.0k $7.8m $7.8m 0.69% Added +77.0k +77,000
12 Caligan Partners LP 1.64% of their portfolio NEW YORK, NY 582,078582.1k $7.0m $7.0m 1.64% Reduced -5.2k -5,198
13 DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio AUSTIN, TX 484,431484.4k $5.9m $5.9m 0.00% Added +65.7k +65,732
14 BOOTHBAY FUND MANAGEMENT, LLC 0.14% of their portfolio NEW YORK, NY 369,360369.4k $4.5m $4.5m 0.14% Added +22.8k +22,849
15 Point72 Asset Management, L.P. 0.01% of their portfolio STAMFORD, CT 358,945358.9k $4.3m $4.3m 0.01% Reduced -1.2m -1,168,155
16 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 349,784349.8k $4.2m $4.2m 0.00% Added +67.2k +67,233
17 ACADIAN ASSET MANAGEMENT LLC 0.01% of their portfolio Boston, MA 323,175323.2k $3.9m $3.9m 0.01% Reduced -279.1k -279,139
18 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 317,805317.8k $3.8m $3.8m 0.00% Reduced -3.9k -3,910
19 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 261,744261.7k $3.2m $3.2m 0.00% Added +143.4k +143,443
20 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio SAN FRANCISCO, CA 255,595255.6k $3.1m $3.1m 0.00% Added +5.4k +5,370
21 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 203,140203.1k $2.5m $2.5m 0.00% Reduced -361.2k -361,151
22 Connor, Clark & Lunn Investment Management Ltd. 0.01% of their portfolio VANCOUVER, A1 176,055176.1k $2.1m $2.1m 0.01% Reduced -26.0k -26,019
23 WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio Boston, MA 160,444160.4k $1.9m $1.9m 0.00% Added +14.1k +14,141
24 JACOBS LEVY EQUITY MANAGEMENT, INC 0.01% of their portfolio FLORHAM PARK, NJ 149,681149.7k $1.8m $1.8m 0.01% Reduced -4.3k -4,335
25 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 138,739138.7k $1.7m $1.7m 0.00% Reduced -226.8k -226,797
26 Squarepoint Ops LLC 0.01% of their portfolio NEW YORK, NY 126,389126.4k $1.5m $1.5m 0.01% Added +74.5k +74,452
27 Bank of New York Mellon Corp 0.00% of their portfolio NEW YORK, NY 120,954121.0k $1.5m $1.5m 0.00% Added +9.0k +8,974
28 Nuveen Asset Management, LLC 0.00% of their portfolio CHICAGO, IL 112,483112.5k $1.4m $1.4m 0.00% Reduced -155.2k -155,247
29 TWO SIGMA ADVISERS, LP 0.00% of their portfolio NEW YORK, NY 97,70097.7k $1.2m $1.2m 0.00% Reduced -32.7k -32,700
30 RICE HALL JAMES & ASSOCIATES, LLC 0.07% of their portfolio San Diego, CA 89,73589.7k $1.1m $1.1m 0.07% Added +3.6k +3,589
31 MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 0.00% of their portfolio Boston, MA 82,20282.2k $993.0k $993.0k 0.00% Added +2.8k +2,760
32 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 81,95982.0k $990.1k $990.1k 0.00% Reduced -18.6k -18,559
33 BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.02% of their portfolio HOUSTON, TX 76,00076.0k $918.1k $918.1k 0.02% Added +10.4k +10,400
34 FRANKLIN RESOURCES INC 0.00% of their portfolio San Mateo, CA 66,97767.0k $809.1k $809.1k 0.00% Added +34.0k +33,996
35 RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio NEW YORK, NY 64,63764.6k $780.8k $780.8k 0.00% Reduced -50.7k -50,663
36 PRUDENTIAL FINANCIAL INC 0.00% of their portfolio NEWARK, NJ 62,72562.7k $757.7k $757.7k 0.00% Reduced -2.4k -2,435
37 Campbell & CO Investment Adviser LLC 0.06% of their portfolio BALTIMORE, MD 62,04662.0k $749.5k $749.5k 0.06% Reduced -14.4k -14,394
38 TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio NEW YORK, NY 61,31661.3k $740.7k $740.7k 0.00% Reduced -43.0k -42,986
39 Swiss National Bank 0.00% of their portfolio ZURICH, V8 60,30060.3k $728.4k $728.4k 0.00% New
40 UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio NEW YORK, NY 58,29958.3k $704.3k $704.3k 0.00% New
41 ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio NASHVILLE, TN 58,14058.1k $702.3k $702.3k 0.00% Reduced -3.8k -3,780
42 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 54,96255.0k $663.9k $663.9k 0.00% Reduced -7.4k -7,374
43 RHUMBLINE ADVISERS 0.00% of their portfolio BOSTON, MA 54,36854.4k $656.8k $656.8k 0.00% Reduced -856 -856
44 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 44,68344.7k $539.8k $539.8k 0.00% Added +31.5k +31,546
45 FEDERATED HERMES, INC. 0.00% of their portfolio PITTSBURGH, PA 44,47444.5k $537.2k $537.2k 0.00% Reduced -91 -91
46 Balyasny Asset Management L.P. 0.00% of their portfolio Chicago, IL 43,97344.0k $531.2k $531.2k 0.00% New
47 SAPIENT CAPITAL LLC 0.01% of their portfolio INDIANAPOLIS, IN 43,70043.7k $527.9k $527.9k 0.01% Unchanged
48 STRS OHIO 0.00% of their portfolio COLUMBUS, OH 43,40043.4k $524.3k $524.3k 0.00% Added +8.3k +8,300
49 STATE OF WISCONSIN INVESTMENT BOARD 0.00% of their portfolio MADISON, WI 41,20741.2k $497.8k $497.8k 0.00% Added +6.2k +6,204
50 ALPS ADVISORS INC 0.00% of their portfolio Denver, CO 34,22434.2k $413.4k $413.4k 0.00% New
51 Legal & General Group Plc 0.00% of their portfolio London, X0 32,69032.7k $394.9k $394.9k 0.00% Added +29.4k +29,379
52 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio WEST SACRAMENTO, CA 30,44930.4k $367.8k $367.8k 0.00% Added +26.7k +26,749
53 FMR LLC 0.00% of their portfolio BOSTON, MA 29,59429.6k $357.5k $357.5k 0.00% Added +1.6k +1,628
54 VIRTUS ADVISERS, LLC 0.16% of their portfolio HARTFORD, CT 27,33227.3k $330.2k $330.2k 0.16% New
55 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 26,95627.0k $325.6k $325.6k 0.00% Reduced -7.9k -7,919
56 XTX Topco Ltd 0.03% of their portfolio LONDON, X0 24,62124.6k $297.4k $297.4k 0.03% New
57 SHERBROOKE PARK ADVISERS LLC 0.05% of their portfolio WHITE PLAINS, NY 23,64723.6k $285.7k $285.7k 0.05% New
58 DEUTSCHE BANK AG\ 0.00% of their portfolio FRANKFURT AM MAIN, 2M 22,53622.5k $272.2k $272.2k 0.00% Added +3.9k +3,897
59 PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio BALTIMORE, MD 22,27922.3k $270.0k $270.0k 0.00% Added +1.1k +1,121
60 MetLife Investment Management, LLC 0.00% of their portfolio Whippany, NJ 22,14122.1k $267.5k $267.5k 0.00% Added +2.1k +2,055
61 AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio Greenwich, CT 21,92621.9k $264.9k $264.9k 0.00% Reduced -15.9k -15,915
62 Corebridge Financial, Inc. 0.00% of their portfolio HOUSTON, TX 19,78719.8k $239.0k $239.0k 0.00% First filing
63 UBS Group AG 0.00% of their portfolio ZURICH, V8 19,00419.0k $229.6k $229.6k 0.00% Reduced -18.5k -18,543
64 MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio CAUSEWAY BAY, K3 17,89717.9k $216.2k $216.2k 0.00% First filing
65 JANUS HENDERSON GROUP PLC 0.00% of their portfolio LONDON, X0 16,30016.3k $196.7k $196.7k 0.00% New
66 STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.00% of their portfolio TALLAHASSEE, FL 14,59614.6k $176.3k $176.3k 0.00% Added +290 +290
67 EXCHANGE TRADED CONCEPTS, LLC 0.00% of their portfolio Oklahoma City, OK 14,48914.5k $175.0k $175.0k 0.00% Reduced -4.5k -4,507
68 MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio Toronto, A6 14,42214.4k $174.2k $174.2k 0.00% Reduced -253 -253
69 Invesco Ltd. 0.00% of their portfolio ATLANTA, GA 14,22714.2k $171.9k $171.9k 0.00% Added +939 +939
70 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 12,97813.0k $156.8k $156.8k 0.00% Reduced -12.8k -12,760
71 NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio ALBANY, NY 12,61012.6k $152.3k $152.3k 0.00% Reduced -3 -3
72 VOYA INVESTMENT MANAGEMENT LLC 0.00% of their portfolio ATLANTA, GA 12,60112.6k $152.2k $152.2k 0.00% Added +62 +62
73 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 11,77611.8k $142.3k $142.3k 0.00% Reduced -239 -239
74 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 8,9699.0k $108.3k $108.3k 0.00% Added +2.2k +2,224
75 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 6,9026.9k $83.4k $83.4k 0.00% Added +3.5k +3,516
76 Cubist Systematic Strategies, LLC 0.00% of their portfolio STAMFORD, CT 6,5976.6k $79.7k $79.7k 0.00% Reduced -71.2k -71,189
77 EntryPoint Capital, LLC 0.03% of their portfolio NEW YORK, NY 6,1526.2k $74.3k $74.3k 0.03% New
78 China Universal Asset Management Co., Ltd. 0.01% of their portfolio SHANGHAI, F4 5,1565.2k $62.3k $62.3k 0.01% Reduced -3.2k -3,234
79 Ameritas Investment Partners, Inc. 0.00% of their portfolio LINCOLN, NE 3,7013.7k $44.7k $44.7k 0.00% Unchanged
80 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 3,4593.5k $42.0k $42.0k 0.00% Added +2.6k +2,622
81 CANADA LIFE ASSURANCE Co 0.00% of their portfolio WINNIPEG, A2 3,0483.0k $37.0k $37.0k 0.00% New
82 Mirae Asset Global Investments Co., Ltd. 0.00% of their portfolio SEOUL, M5 1,3101.3k $16.2k $16.2k 0.00% New
83 DANSKE BANK A/S 0.00% of their portfolio COPENHAGEN V, G7 1,2761.3k $15.4k $15.4k 0.00% Unchanged
84 AMALGAMATED BANK 0.00% of their portfolio NEW YORK, NY 1,2171.2k $15.0k $15.0k 0.00% Unchanged
85 HighMark Wealth Management LLC 0.00% of their portfolio ST. PAUL, MN 220220 $2.7k $2.7k 0.00% Unchanged
86 Russell Investments Group, Ltd. 0.00% of their portfolio Seattle, WA 188188 $2.3k $2.3k 0.00% Added +163 +163
87 Daiwa Securities Group Inc. 0.00% of their portfolio CHIYODA-KU,TOKYO, M0 162162 $2.0k $2.0k 0.00% Unchanged
88 CWM, LLC 0.00% of their portfolio OMAHA, NE 6767 $1.0k $1.0k 0.00% Added +1 +1
89 SIGNATUREFD, LLC 0.00% of their portfolio ATLANTA, GA 6464 $773 $773 0.00% New
90 NISA INVESTMENT ADVISORS, LLC 0.00% of their portfolio ST. LOUIS, MO 5353 $640 $640 0.00% Reduced -25 -25
91 Point72 (DIFC) Ltd 0.00% of their portfolio DUBAI, C0 5353 $637 $637 0.00% Reduced -14.7k -14,711
92 Eagle Bay Advisors LLC 0.00% of their portfolio NEW YORK, NY 5050 $604 $604 0.00% Unchanged
93 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 3030 $362 $362 0.00% New
94 GAMMA Investing LLC 0.00% of their portfolio FOSTER CITY, CA 55 $60 $60 0.00% Reduced -21 -21
95 AlphaQuest LLC 0.00% of their portfolio New York, NY 11 $12 $12 0.00% New
96 Farther Finance Advisors, LLC 0.00% of their portfolio SAN FRANCISCO, CA 11 $12 $12 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% Unchanged