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Syndax Pharmaceuticals

246 hedge funds and large institutions have $2.32B invested in Syndax Pharmaceuticals in 2026 Q1 according to their latest regulatory filings, with 45 funds opening new positions, 99 increasing their positions, 68 reducing their positions, and 25 closing their positions.

New
Increased
Maintained
Reduced
Closed

86% more call options, than puts

Call options by funds: $15.2M | Put options by funds: $8.14M

80% more first-time investments, than exits

New positions opened: 45 | Existing positions closed: 25

46% more repeat investments, than reductions

Existing positions increased: 99 | Existing positions reduced: 68

11% more capital invested

Capital invested by funds: $2.1B → $2.32B (+$222M)

7% more funds holding

Funds holding: 229246 (+17)

2.28% less ownership

Funds ownership: 114.94%112.66% (-2.3%)

9% less funds holding in top 10

Funds holding in top 10: 1110 (-1)

Holders
246
Holders Change
+17
Holders Change %
+7.42%
% of All Funds
3.03%
Holding in Top 10
10
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-9.09%
% of All Funds
0.12%
New
45
Increased
99
Reduced
68
Closed
25
Calls
$15.2M
Puts
$8.14M
Net Calls
+$7.04M
Net Calls Change
-$8.56M
Name Holding Trade Value Shares
Change
Change in
Stake
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
51
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
Ontario, Canada
$7.75M +$4.22M +194,036 +141%
GIM
52
Granahan Investment Management
Massachusetts
$7.16M -$1.31M -60,472 -16%
Aberdeen Group
53
Aberdeen Group
United Kingdom
$6.7M -$1.86M -85,823 -23%
SGA
54
Sector Gamma AS
Norway
$6.68M +$738K +33,945 +13%
PFCS
55
Pale Fire Capital SE
Czech Republic
$6.64M
Ameriprise
56
Ameriprise
Minnesota
$6.64M +$36K +1,658 +0.6%
SSA
57
Schonfeld Strategic Advisors
New York
$6.09M +$5.38M +247,526 +1,890%
AllianceBernstein
58
AllianceBernstein
Tennessee
$6.06M +$4.21M +193,687 +204%
Invesco
59
Invesco
Georgia
$5.9M +$2M +92,236 +57%
PAM
60
Panagora Asset Management
Massachusetts
$5.83M +$2.7M +124,308 +99%
JP Morgan Chase
61
JP Morgan Chase
New York
$5.81M -$2.61M -119,985 -32%
PHS
62
PFM Health Sciences
California
$5.72M +$44.6K +2,054 +0.8%
Canada Pension Plan Investment Board
63
Canada Pension Plan Investment Board
Ontario, Canada
$5.36M
SEI Investments
64
SEI Investments
Pennsylvania
$5.08M +$1.26M +57,962 +36%
DCM
65
DAFNA Capital Management
California
$5.08M -$1.31M -60,500 -22%
HWAM
66
Hennion & Walsh Asset Management
New Jersey
$5.02M +$674K +31,005 +17%
BHCM
67
Brevan Howard Capital Management
Jersey
$4.79M -$6.74M -310,284 -60%
PFPG
68
Pinnacle Financial Partners (Georgia)
Georgia
$4.73M -$93.8K -4,319 -2%
TI
69
Trexquant Investment
Connecticut
$4.71M +$2.48M +114,263 +131%
VIG
70
Vienna Insurance Group
Poland
$4.67M
Millennium Management
71
Millennium Management
New York
$4.66M +$3.21M +147,587 +284%
EIM
72
Essex Investment Management
Massachusetts
$4.65M +$4.32M +198,985 New
Susquehanna International Group
73
Susquehanna International Group
Pennsylvania
$4.59M +$3.88M +178,468 +983%
Man Group
74
Man Group
United Kingdom
$4.25M +$2.99M +137,378 +308%
Squarepoint
75
Squarepoint
New York
$4.24M +$3.51M +161,738 +816%

SNDX Hedge Fund Activity: Q1 2026 in Review

246 of the 8,126 institutional investors tracked by Wall St. Rank reported a position in Syndax Pharmaceuticals (SNDX) for Q1 2026, worth a combined $2.32B — up 11% from $2.1B a quarter earlier.

Buyers outnumbered sellers: 45 funds opened new SNDX positions and 25 closed out — a net gain of 20 holders — while 99 added to existing stakes and 68 trimmed.

The largest buyer was Deerfield Management, opening a new position worth an estimated $82.1M. The largest seller was Point72 Asset Management, cutting an estimated $62.9M.

  • 246 institutional investors held Syndax Pharmaceuticals (SNDX) as of Q1 2026, up from 229 in Q4 2025.
  • Funds reported $2.32B of Syndax Pharmaceuticals stock for Q1 2026, up 11% quarter-over-quarter.
  • 45 funds opened new Syndax Pharmaceuticals positions in Q1 2026 and 25 closed out, a net change of +20 holders.
  • The largest Syndax Pharmaceuticals buyer in Q1 2026 was Deerfield Management, an estimated $82.1M added.
  • The largest Syndax Pharmaceuticals seller in Q1 2026 was Point72 Asset Management, an estimated $62.9M sold.

Based on aggregated 13F filings for Q1 2026.