Institutional Ownership Y M Abs Therapeutics, Inc. (YMAB)
This table provides information about the institutional ownership of Y M Abs Therapeutics, Inc. (YMAB). We have compiled data on the 97 institutions that hold shares in the stock, with a total of 26 Million shares, which have been reported (via 13F filing form) to have a value of $223 Million.
| Holding | Report Date | shares Held | Holding Value (Reported) | Last Trade | Trade History |
|---|---|---|---|---|---|
|
Paradigm Biocapital Advisors LP
New York, NY |
Aug 14, 2025 Q2 2025 |
4,236,346
shares
|
$36.3 Million
0.89% of portfolio
|
Q4 2024
Added 3.67%
|
|
|
Acorn Capital Advisors, LLC
New York, NY |
Aug 14, 2025 Q2 2025 |
3,418,995
shares
|
$29.3 Million
10.09% of portfolio
|
Q2 2025
Added 5.67%
|
|
|
Black Rock Inc.
New York, NY |
Aug 13, 2024 Q2 2024 |
2,938,718
shares
|
$25.2 Million
0.0% of portfolio
|
Q2 2024
Added 2.85%
|
|
|
Sofinnova Investments, Inc.
Menlo Park, CA |
Aug 14, 2025 Q2 2025 |
2,194,278
shares
|
$18.8 Million
0.67% of portfolio
|
Q4 2019
Added 4.28%
|
|
|
Vanguard Group Inc
Valley Forge, PA |
Aug 11, 2025 Q2 2025 |
1,943,285
shares
|
$16.7 Million
0.0% of portfolio
|
Q2 2025
Reduced 0.17%
|
|
|
Polar Capital Holdings PLC
London, X0 |
Aug 14, 2025 Q2 2025 |
1,789,800
shares
|
$15.4 Million
0.05% of portfolio
|
Q2 2025
Reduced 2.25%
|
|
|
Geode Capital Management, LLC
Boston, MA |
Aug 08, 2025 Q2 2025 |
848,461
shares
|
$7.28 Million
0.0% of portfolio
|
Q2 2025
Reduced 0.12%
|
|
|
State Street Corp
Boston, MA |
Aug 14, 2025 Q2 2025 |
780,145
shares
|
$6.69 Million
0.0% of portfolio
|
Q2 2025
Reduced 1.12%
|
|
|
Boothbay Fund Management, LLC
New York, NY |
Aug 14, 2025 Q2 2025 |
693,693
shares
|
$5.95 Million
0.07% of portfolio
|
Q4 2024
Added 24.45%
|
|
|
D. E. Shaw & Co., Inc.
New York, NY |
Aug 14, 2025 Q2 2025 |
516,857
shares
|
$4.43 Million
0.0% of portfolio
|
Q2 2025
Reduced 5.97%
|
|
|
Dimensional Fund Advisors LP
Austin, TX |
Aug 12, 2025 Q2 2025 |
412,246
shares
|
$3.54 Million
0.0% of portfolio
|
Q2 2025
Reduced 1.51%
|
|
|
Nantahala Capital Management, LLC
New Canaan, CT |
Aug 14, 2025 Q2 2025 |
351,878
shares
|
$3.02 Million
0.07% of portfolio
|
Q2 2025
New holding
|
|
|
Soleus Capital Management, L.P.
Greenwich, CT |
Aug 14, 2025 Q2 2025 |
349,982
shares
|
$3 Million
0.12% of portfolio
|
Q4 2024
Reduced 12.5%
|
|
|
Northern Trust Corp
Chicago, IL |
Aug 13, 2025 Q2 2025 |
308,130
shares
|
$2.64 Million
0.0% of portfolio
|
Q2 2025
Reduced 6.03%
|
|
|
Morgan Stanley
New York, NY |
Aug 15, 2025 Q2 2025 |
292,567
shares
|
$2.51 Million
0.0% of portfolio
|
Q2 2025
Reduced 41.51%
|
|
|
Stonepine Capital Management, LLC
Bend, OR |
Aug 13, 2025 Q2 2025 |
285,300
shares
|
$2.45 Million
1.26% of portfolio
|
Q2 2025
Added 117.52%
|
|
|
Charles Schwab Investment Management Inc
San Francisco, CA |
Aug 12, 2025 Q2 2025 |
278,179
shares
|
$2.39 Million
0.0% of portfolio
|
Q2 2025
Added 0.2%
|
|
|
Bank Of America Corp
Charlotte, NC |
Aug 14, 2025 Q2 2025 |
274,164
shares
|
$2.35 Million
0.0% of portfolio
|
Q2 2025
Reduced 2.89%
|
|
|
Aqr Capital Management LLC
Greenwich, CT |
Aug 14, 2025 Q2 2025 |
252,142
shares
|
$2.16 Million
0.0% of portfolio
|
Q2 2025
Added 53.01%
|
|
|
Jpmorgan Chase & CO
New York, NY |
May 12, 2025 Q1 2025 |
247,442
shares
|
$2.12 Million
0.0% of portfolio
|
Q1 2025
Added 153.37%
|
|
|
Ubs Group Ag
|
Aug 14, 2025 Q2 2025 |
229,072
shares
|
$1.97 Million
0.0% of portfolio
|
Q2 2025
Added 150.14%
|
|
|
Goldman Sachs Group Inc
New York, NY |
Aug 14, 2025 Q2 2025 |
212,751
shares
|
$1.83 Million
0.0% of portfolio
|
Q2 2025
Added 5.44%
|
|
|
Ken Griffin
Citadel Advisors LLC | Chicago, Il
|
Aug 14, 2025 Q2 2025 |
207,642
shares
|
$1.78 Million
0.0% of portfolio
|
Q2 2025
Added 34.87%
|
|
|
Memorial Sloan Kettering Cancer Center
New York, NY |
Nov 14, 2023 Q3 2023 |
191,176
shares
|
$1.64 Million
4.24% of portfolio
|
Q4 2021
Reduced 11.87%
|
|
|
Gsa Capital Partners LLP
London, X0 |
Jul 22, 2025 Q2 2025 |
186,062
shares
|
$1.6 Million
0.06% of portfolio
|
Q2 2025
Added 801.86%
|