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Syndax Pharmaceuticals

218 hedge funds and large institutions have $1.25B invested in Syndax Pharmaceuticals in 2025 Q1 according to their latest regulatory filings, with 31 funds opening new positions, 88 increasing their positions, 63 reducing their positions, and 26 closing their positions.

New
Increased
Maintained
Reduced
Closed

129% more call options, than puts

Call options by funds: $18.1M | Put options by funds: $7.88M

40% more repeat investments, than reductions

Existing positions increased: 88 | Existing positions reduced: 63

25% more funds holding in top 10

Funds holding in top 10: 810 (+2)

19% more first-time investments, than exits

New positions opened: 31 | Existing positions closed: 26

2.52% more ownership

Funds ownership: 114.85%117.37% (+2.5%)

1% more funds holding

Funds holding: 215218 (+3)

3% less capital invested

Capital invested by funds: $1.3B → $1.25B (-$41.1M)

Holders
218
Holders Change
+3
Holders Change %
+1.4%
% of All Funds
2.92%
Holding in Top 10
10
Holding in Top 10 Change
+2
Holding in Top 10 Change %
+25%
% of All Funds
0.13%
New
31
Increased
88
Reduced
63
Closed
26
Calls
$18.1M
Puts
$7.88M
Net Calls
+$10.2M
Net Calls Change
-$2.9M
Name Holding Trade Value Shares
Change
Change in
Stake
Macquarie Group
76
Macquarie Group
Australia
$2.21M
Rafferty Asset Management
77
Rafferty Asset Management
New York
$2.11M -$93.4K -6,624 -4%
AllianceBernstein
78
AllianceBernstein
Tennessee
$2.07M +$1.18M +83,434 +98%
SC
79
SummitTX Capital
Texas
$2.02M +$2.32M +164,233 New
Swiss National Bank
80
Swiss National Bank
Switzerland
$1.84M
SAM
81
Simplify Asset Management
Nevada
$1.82M +$2.03K +144 +0.1%
HF
82
HRT Financial
New York
$1.78M +$566K +40,154 +38%
Man Group
83
Man Group
United Kingdom
$1.65M +$178K +12,597 +10%
Aberdeen Group
84
Aberdeen Group
United Kingdom
$1.63M +$467K +33,093 +33%
DMKJ
85
David M. Knott Jr
$1.57M
EGM
86
Engineers Gate Manager
New York
$1.55M -$299K -21,188 -14%
Fidelity Investments
87
Fidelity Investments
Massachusetts
$1.5M +$523K +37,057 +43%
RhumbLine Advisers
88
RhumbLine Advisers
Massachusetts
$1.48M +$104K +7,361 +6%
Russell Investments Group
89
Russell Investments Group
United Kingdom
$1.44M +$1.25M +88,591 +305%
YLHM
90
Yelin Lapidot Holdings Management
Israel
$1.33M
PAMP
91
Polar Asset Management Partners
Ontario, Canada
$1.31M +$305K +21,630 +25%
Jane Street
92
Jane Street
New York
$1.13M +$1.12M +79,468 +623%
PCM
93
Prelude Capital Management
New York
$1.13M +$77.5K +5,492 +6%
GCP
94
GSA Capital Partners
United Kingdom
$1.07M +$711K +50,427 +137%
Legal & General Group
95
Legal & General Group
United Kingdom
$991K -$3.16K -224 -0.3%
Invesco
96
Invesco
Georgia
$944K +$360K +25,524 +50%
Stifel Financial
97
Stifel Financial
Missouri
$913K +$520K +36,877 +98%
NRD
98
Nebula Research & Development
New York
$891K -$61.4K -4,356 -6%
California State Teachers Retirement System (CalSTRS)
99
California State Teachers Retirement System (CalSTRS)
California
$885K
Tudor Investment Corp
100
Tudor Investment Corp
Connecticut
$823K +$945K +66,988 New

SNDX Hedge Fund Activity: Q1 2025 in Review

218 of the 7,459 institutional investors tracked by Wall St. Rank reported a position in Syndax Pharmaceuticals (SNDX) for Q1 2025, worth a combined $1.25B — down 3.2% from $1.3B a quarter earlier.

Buyers outnumbered sellers: 31 funds opened new SNDX positions and 26 closed out — a net gain of 5 holders — while 88 added to existing stakes and 63 trimmed.

The largest buyer was Eversept Partners, adding an estimated $54.6M. The largest seller was Wellington Management Group, cutting an estimated $59.2M.

  • 218 institutional investors held Syndax Pharmaceuticals (SNDX) as of Q1 2025, up from 215 in Q4 2024.
  • Funds reported $1.25B of Syndax Pharmaceuticals stock for Q1 2025, down 3.2% quarter-over-quarter.
  • 31 funds opened new Syndax Pharmaceuticals positions in Q1 2025 and 26 closed out, a net change of +5 holders.
  • The largest Syndax Pharmaceuticals buyer in Q1 2025 was Eversept Partners, an estimated $54.6M added.
  • The largest Syndax Pharmaceuticals seller in Q1 2025 was Wellington Management Group, an estimated $59.2M sold.

Based on aggregated 13F filings for Q1 2025.