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ITOS

iTeos Therapeutics
ITOS

Delisted

ITOS was delisted on the 28th of August, 2025.

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81 hedge funds and large institutions have $1.03B invested in iTeos Therapeutics in 2021 Q1 according to their latest regulatory filings, with 19 funds opening new positions, 35 increasing their positions, 13 reducing their positions, and 9 closing their positions.

New
Increased
Maintained
Reduced
Closed

169% more repeat investments, than reductions

Existing positions increased: 35 | Existing positions reduced: 13

111% more first-time investments, than exits

New positions opened: 19 | Existing positions closed: 9

14% more funds holding

Funds holding: 71 → 81 (+10)

13% more capital invested

Capital invested by funds: $907M → $1.03B (+$121M)

8.97% more ownership

Funds ownership: 76.75% → 85.72% (+9%)

0% more funds holding in top 10

Funds holding in top 10: 4 → 4 (0)

Holders
81
Holders Change
+10
Holders Change %
+14.08%
% of All Funds
1.42%
Holding in Top 10
4
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.07%
New
19
Increased
35
Reduced
13
Closed
9
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

Rank Fund Capital Flow
1
RI
RTW Investments
New York
+$61M
2
Adage Capital Partners
Adage Capital Partners
Massachusetts
+$33.6M
3
CAC
Cowen and Company
New York
+$21.3M
4
State Street
State Street
Massachusetts
+$18.6M
5
BlackRock
BlackRock
New York
+$16.9M

Top Sellers

Rank Fund Capital Flow
1
Janus Henderson Group
Janus Henderson Group
United Kingdom
-$29.4M
2
ACA
Avoro Capital Advisors
New York
-$15.6M
3
Citadel Advisors
Citadel Advisors
Florida
-$10.3M
4
RSCM
Rock Springs Capital Management
Maryland
-$5.41M
5
LGM
Logos Global Management
California
-$3.38M
Name Holding Trade Value Shares
Change 		Change in
Stake
RCM
1
RA Capital Management
Massachusetts
$151M – – –
BC
2
Boxer Capital
California
$149M – – –
MAM
3
MPM Asset Management
Massachusetts
$127M – – –
RI
4
RTW Investments
New York
$94.4M +$61M +1,688,625 +157%
MB
5
MPM BioImpact
Massachusetts
$80.5M – – –
BlackRock
6
BlackRock
New York
$52.4M +$16.9M +468,576 +44%
Adage Capital Partners
7
Adage Capital Partners
Massachusetts
$43M +$33.6M +930,036 +285%
Janus Henderson Group
8
Janus Henderson Group
United Kingdom
$40.1M -$29.4M -814,922 -41%
AllianceBernstein
9
AllianceBernstein
Tennessee
$40M +$2.6M +71,901 +7%
AG
10
Artal Group
Luxembourg
$37.4M – – –
Fidelity Investments
11
Fidelity Investments
Massachusetts
$28M +$3.01M +83,200 +11%
State Street
12
State Street
Massachusetts
$24M +$18.6M +514,008 +272%
Vanguard Group
13
Vanguard Group
Pennsylvania
$23.7M +$1.52M +41,973 +6%
CAC
14
Cowen and Company
New York
$20.1M +$21.3M +588,238 New
Citadel Advisors
15
Citadel Advisors
Florida
$17.5M -$10.3M -286,316 -36%
ABG
16
Ally Bridge Group
New York
$11M – – –
CAM
17
Cormorant Asset Management
Massachusetts
$10.3M – – –
Geode Capital Management
18
Geode Capital Management
Massachusetts
$9.41M +$3.41M +94,297 +52%
EC
19
EcoR1 Capital
California
$8.89M – – –
PHS
20
PFM Health Sciences
California
$7.94M +$8.39M +232,216 New
Northern Trust
21
Northern Trust
Illinois
$6.59M +$2.2M +60,766 +46%
BBA
22
Baker Bros. Advisors
New York
$5.14M – – –
N
23
Nuveen
North Carolina
$4.3M +$2.56M +70,784 +129%
Axa
24
Axa
France
$4.23M +$4.47M +123,702 New
ACM
25
Asymmetry Capital Management
California
$3.5M -$1.3M -36,098 -26%
1
2 3 4

ITOS Hedge Fund Activity: Q1 2021 in Review

81 of the 5,695 institutional investors tracked by Wall St. Rank reported a position in iTeos Therapeutics (ITOS) for Q1 2021, worth a combined $1.03B — up 13% from $907M a quarter earlier.

Buyers outnumbered sellers: 19 funds opened new ITOS positions and 9 closed out — a net gain of 10 holders — while 35 added to existing stakes and 13 trimmed.

The largest buyer was RTW Investments, adding an estimated $61M. The largest seller was Janus Henderson Group, cutting an estimated $29.4M.

  • 81 institutional investors held iTeos Therapeutics (ITOS) as of Q1 2021, up from 71 in Q4 2020.
  • Funds reported $1.03B of iTeos Therapeutics stock for Q1 2021, up 13% quarter-over-quarter.
  • 19 funds opened new iTeos Therapeutics positions in Q1 2021 and 9 closed out, a net change of +10 holders.
  • The largest iTeos Therapeutics buyer in Q1 2021 was RTW Investments, an estimated $61M added.
  • The largest iTeos Therapeutics seller in Q1 2021 was Janus Henderson Group, an estimated $29.4M sold.

Based on aggregated 13F filings for Q1 2021.