We are live on ! Find out more
YMAB

Y-mAbs Therapeutics
YMAB

Delisted

YMAB was delisted on the 15th of September, 2025.

Back to rankings

88 hedge funds and large institutions have $266M invested in Y-mAbs Therapeutics in 2022 Q1 according to their latest regulatory filings, with 15 funds opening new positions, 28 increasing their positions, 31 reducing their positions, and 24 closing their positions.

New
Increased
Maintained
Reduced
Closed

0% more funds holding in top 10

Funds holding in top 10: 2 → 2 (0)

10% less repeat investments, than reductions

Existing positions increased: 28 | Existing positions reduced: 31

1.08% less ownership

Funds ownership: 58.97% → 57.89% (-1.1%)

9% less funds holding

Funds holding: 97 → 88 (-9)

32% less capital invested

Capital invested by funds: $394M → $266M (-$128M)

38% less first-time investments, than exits

New positions opened: 15 | Existing positions closed: 24

Holders
88
Holders Change
-9
Holders Change %
-9.28%
% of All Funds
1.39%
Holding in Top 10
2
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.03%
New
15
Increased
28
Reduced
31
Closed
24
Calls
$2.68M
Puts
–
Net Calls
+$2.68M
Net Calls Change
+$2.68M

Top Buyers

Rank Fund Capital Flow
1
PCH
Polar Capital Holdings
United Kingdom
+$15.4M
2
AllianceBernstein
AllianceBernstein
Tennessee
+$10.5M
3
State Street
State Street
Massachusetts
+$8.75M
4
Fidelity Investments
Fidelity Investments
Massachusetts
+$4.56M
5
Bank of America
Bank of America
North Carolina
+$3.25M

Top Sellers

Rank Fund Capital Flow
1
Artisan Partners
Artisan Partners
Wisconsin
-$25.6M
2
Wellington Management Group
Wellington Management Group
Massachusetts
-$24.2M
3
LGM
Logos Global Management
California
-$4.05M
4
New York State Common Retirement Fund
New York State Common Retirement Fund
New York
-$2.17M
5
LOAMS
Lombard Odier Asset Management (Switzerland)
Switzerland
-$1.68M
Name Holding Trade Value Shares
Change 		Change in
Stake
ACM
26
Ashford Capital Management
Delaware
$1.27M -$1.23M -119,410 -53%
N
27
Nuveen
North Carolina
$1.26M +$12.9K +1,261 +1%
Bank of New York Mellon
28
Bank of New York Mellon
New York
$1.24M +$8.11K +790 +0.8%
State of Wisconsin Investment Board
29
State of Wisconsin Investment Board
Wisconsin
$1.09M +$525K +51,100 +125%
Renaissance Technologies
30
Renaissance Technologies
New York
$1.08M -$78K -7,600 -8%
RHJA
31
Rice Hall James & Associates
California
$1.07M +$61.4K +5,980 +7%
Swiss National Bank
32
Swiss National Bank
Switzerland
$737K +$48.3K +4,700 +8%
JP Morgan Chase
33
JP Morgan Chase
New York
$503K +$48.8K +4,752 +13%
California State Teachers Retirement System (CalSTRS)
34
California State Teachers Retirement System (CalSTRS)
California
$443K -$39.4K -3,833 -9%
RhumbLine Advisers
35
RhumbLine Advisers
Massachusetts
$429K -$3.34K -325 -0.9%
Susquehanna International Group
36
Susquehanna International Group
Pennsylvania
$409K +$42.5K +4,137 +14%
Citigroup
37
Citigroup
New York
$361K -$384K -37,353 -55%
Allianz Asset Management
38
Allianz Asset Management
Germany
$341K -$10.5K -1,019 -3%
VOYA Investment Management
39
VOYA Investment Management
Georgia
$331K +$146K +14,174 +104%
Citadel Advisors
40
Citadel Advisors
Florida
$320K -$1.01M -98,771 -79%
Connor, Clark & Lunn Investment Management (CC&L)
41
Connor, Clark & Lunn Investment Management (CC&L)
British Columbia, Canada
$314K +$272K +26,443 New
CF
42
CNA Financial
Illinois
$302K +$74.1K +7,220 +40%
SO
43
STRS Ohio
Ohio
$298K +$258K +25,100 New
New York State Common Retirement Fund
44
New York State Common Retirement Fund
New York
$292K -$2.17M -211,705 -90%
BGIM
45
Brandywine Global Investment Management
Pennsylvania
$290K – – –
VEA
46
Virtus ETF Advisers
New York
$281K – – –
E
47
Ergoteles
New York
$274K +$46.2K +4,497 +24%
PPA
48
Parametric Portfolio Associates
Washington
$253K +$63K +6,131 +41%
MIM
49
MetLife Investment Management
New Jersey
$246K +$74.6K +7,268 +54%
CS
50
Credit Suisse
Switzerland
$228K +$12.3K +1,199 +7%
1
2
3 4 5

YMAB Hedge Fund Activity: Q1 2022 in Review

88 of the 6,341 institutional investors tracked by Wall St. Rank reported a position in Y-mAbs Therapeutics (YMAB) for Q1 2022, worth a combined $266M — down 32% from $394M a quarter earlier.

Sellers outnumbered buyers: 24 funds closed out of YMAB and 15 opened new positions — a net loss of 9 holders — while 31 trimmed existing stakes and 28 added.

The largest buyer was Polar Capital Holdings, adding an estimated $15.4M. The largest seller was Artisan Partners, exiting entirely with an estimated $25.6M sold.

  • 88 institutional investors held Y-mAbs Therapeutics (YMAB) as of Q1 2022, down from 97 in Q4 2021.
  • Funds reported $266M of Y-mAbs Therapeutics stock for Q1 2022, down 32% quarter-over-quarter.
  • 15 funds opened new Y-mAbs Therapeutics positions in Q1 2022 and 24 closed out, a net change of -9 holders.
  • The largest Y-mAbs Therapeutics buyer in Q1 2022 was Polar Capital Holdings, an estimated $15.4M added.
  • The largest Y-mAbs Therapeutics seller in Q1 2022 was Artisan Partners, an estimated $25.6M sold.

Based on aggregated 13F filings for Q1 2022.