SNDX

Syndax Pharmaceuticals Inc
Health CareUSCUSIP 87164F105◍ Confluence graph
Tracked 13F Holders
220
-126 QoQ
13F Value (tracked)
$2.3B
Insider Net · 180d
-$2.1M
0↑ 3↓
Recent Filings
15
Smart-money sentimentMixed
BearishBullish
13F funds (latest Q)48 adding · 18 trimming
Insider net (180d)-$2.1M

Who owns SNDX?

220 tracked 13F filers

220 tracked 13F filers disclose a position in SNDX as of the latest SEC 13F filings, a combined $2.3B in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.

All quarters use one ordinary-share-equivalent series. Historical ADS are converted at 2 ADS = 1 ordinary share. Expand a row for the exact calculation; the residual is not classified as a trade.
#FundPosition valueSharesLast moveAs ofHistory
1BlackRock, Inc.
$192.8M
8.3M
+0.2%
Added · +15K sh
Q1 2026
2Kynam Capital Management, LP
$188.1M
8.1M
Held
Q1 2026
3STATE STREET CORP
$123.7M
5.7M
+28%
Added · +1.2M sh
Q2 2026
4GOLDMAN SACHS GROUP INC
$116.7M
5.0M
−12%
Reduced · −699K sh
Q1 2026
5BANK OF AMERICA CORP /DE/
$99.3M
4.2M
−9.8%
Reduced · −461K sh
Q1 2026
6VANGUARD CAPITAL MANAGEMENT LLC
$89.3M
3.8M
First observed position
No prior filed position
Q1 2026
7DEERFIELD MANAGEMENT COMPANY, L.P.
$88.3M
3.8M
New
+3.8M sh
Q1 2026
8Eversept Partners, LP
$61.2M
2.8M
−3.0%
Reduced · −87K sh
Q2 2026
9GEODE CAPITAL MANAGEMENT, LLC
$56.5M
2.6M
+20%
Added · +427K sh
Q2 2026
10Hood River Capital Management LLC
$56.1M
2.6M
+8.9%
Added · +210K sh
Q2 2026
11KINGDON CAPITAL MANAGEMENT, L.L.C.
$58.4M
2.5M
+6.4%
Added · +150K sh
Q1 2026
12FRANKLIN RESOURCES INC
$50.2M
2.2M
−11%
Reduced · −272K sh
Q1 2026
13Point72 Asset Management, L.P.
$46.4M
2.0M
−59%
Reduced · −2.9M sh
Q1 2026
14VANGUARD PORTFOLIO MANAGEMENT LLC
$40.6M
1.7M
First observed position
No prior filed position
Q1 2026
15BNP Paribas Asset Management Holding S.A.
$40.5M
1.7M
+26%
Added · +357K sh
Q1 2026
16Candriam S.C.A.
$37.0M
1.7M
+83%
Added · +771K sh
Q2 2026
17Soleus Capital Management, L.P.
$35.6M
1.6M
−5.7%
Reduced · −99K sh
Q2 2026
18D. E. Shaw & Co., Inc.
$37.4M
1.6M
+31%
Added · +382K sh
Q1 2026
19TWO SIGMA INVESTMENTS, LP
$36.9M
1.6M
+38%
Added · +433K sh
Q1 2026
20Nuveen, LLC
$34.9M
1.5M
+0.8%
Added · +12K sh
Q1 2026
21MPM BioImpact LLC
$31.3M
1.3M
+0.2%
Added · +3K sh
Q1 2026
22Woodline Partners LP
$29.2M
1.3M
~0%
Added · +92 sh
Q1 2026
23STEMPOINT CAPITAL LP
$28.4M
1.2M
−9.2%
Reduced · −124K sh
Q1 2026
24Catalio Capital Management, LP
$26.6M
1.2M
+16%
Added · +172K sh
Q2 2026
25SILVERARC CAPITAL MANAGEMENT, LLC
$26.5M
1.2M
+37%
Added · +325K sh
Q2 2026

Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.

Is SNDX being bought or sold by institutions?

Last quarter, 8 funds opened a new position in SNDX and 40 added to an existing one, while 18 reduced and 0 exited entirely — based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).

Opened (NEW)
8
funds
Added
40
funds
Reduced
18
funds
Exited
0
funds

Funds that own SNDX also own

CompanyCo-held byCombined value
ELI LILLY & COLLY102 funds$53.9B
AMAZON.COM INCAMZN100 funds$126.3B
NVIDIA CORPNVDA99 funds$258.3B
UNITEDHEALTH GROUP INCUNH99 funds$20.7B
MICROSOFT CORPMSFT97 funds$173.7B
BOSTON SCIENTIFIC CORPBSX97 funds$11.3B
BROADCOM INCAVGO95 funds$107.3B
META PLATFORMS INC-CLASS AMETA95 funds$72.8B
MICRON TECHNOLOGY INCMU95 funds$28.3B
INTUITIVE SURGICAL INCISRG94 funds$19.3B
LAM RESEARCH CORPLRCX93 funds$23.3B
MERCK & CO. INC.MRK93 funds$17.4B

Ranked by how many of SNDX's institutional holders also hold each name, a cross-fund conviction signal.

Insider activity (Form 4)

Full insider page →
Buys · 180d
$0
0 insiders
Sells · 180d
$2.1M
3 insiders
Net
-$2.1M
5 P/S txns
Signal
Net Selling
open-market
DateInsiderRoleActionSharesValue
Jul 8, 2026Metzger Michael AChief Executive Officer, DirectorSell (S)32K$785K
Jun 12, 2026Botwood Nicholas A.J.Head of R&D, CMOSell (S)31K$567K
Jun 11, 2026Botwood Nicholas A.J.Head of R&D, CMOSell (S)34K$617K
Jun 1, 2026Goldan Keith A.Chief Financial OfficerSell (S)1K$22K
Jun 1, 2026Metzger Michael AChief Executive Officer, DirectorSell (S)7K$130K
Feb 9, 2026Goldan Keith A.Chief Financial OfficerSell (S)3K$72K
Feb 9, 2026Metzger Michael AChief Executive Officer, DirectorSell (S)17K$361K
Feb 6, 2026Goldan Keith A.Chief Financial OfficerSell (S)2K$43K
Feb 6, 2026Metzger Michael AChief Executive Officer, DirectorSell (S)7K$153K
Sep 8, 2025Metzger Michael AChief Executive Officer, DirectorSell (S)157K$2.6M
Aug 18, 2025Podlesak DennisDirectorSell (S)19K$304K
Aug 15, 2025Podlesak DennisDirectorSell (S)19K$298K

Institutional ownership over time

90 funds-65 since Q3 2024
0108216Q3 2024Q1 2025Q3 2025Q1 2026Q2 2026
funds holding aggregate valuelatest $591.9M

Recent filings

15 shown

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Connected entities for SNDX

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Ask your agent what changed in SNDX

This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.

Copy-paste
curl -H "Authorization: Bearer YOUR_API_KEY" \
  "https://arkolith.com/api/v1/stocks/SNDX/capital-change-brief"
Ask your agent
Use Arkolith's capital_change_brief for SNDX.
Tell me what changed, whether insider activity
corroborates it, and cite the SEC evidence.

13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for SNDX. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.