Company · Ownership research

Syndax Pharmaceuticals Inc SNDX

CIK 0001395937 · CUSIP 87164F105

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 87164F105 (SNDX), not CUSIP 87164F905 (SNDX), CUSIP 87164F955 (SNDX), and does not merge CUSIPs.

This page lists the top 20 of 73 rows by value; the complete set is available through the API.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$43.46M 2,311,016 shares	0.00%	-273.12K(-10.60%)Reduced	SEC filing ↗ Nov 6, 2026	▾
02	Aberdeen Group plc CIK 1716774 · View history	$36.64M 80,319 shares	0.05%	-292.45K(-78.50%)Reduced	SEC filing ↗ Nov 6, 2026	▾
03	Candriam S.C.A. CIK 1537014 · View history	$31.52M 1,670,510 shares	0.14%	-25.53K(-1.50%)Reduced	SEC filing ↗ Nov 3, 2026	▾
04	Bank of New York Mellon Corp CIK 1390777 · View history	$18.94M 1,007,235 shares	0.00%	-32.84K(-3.20%)Reduced	SEC filing ↗ Nov 5, 2026	▾
05	Hennion & Walsh Asset Management, Inc. CIK 1861642 · View history	$7.26M 386,364 shares	0.21%	+43.48K(+12.70%)Added	SEC filing ↗ Oct 13, 2026	▾
06	MACKENZIE FINANCIAL CORP CIK 919859 · View history	$5.94M 316,157 shares	0.01%	+36.08K(+12.90%)Added	SEC filing ↗ Nov 2, 2026	▾
07	CenterBook Partners LP CIK 1872738 · View history	$5.14M 273,253 shares	0.24%	+273.25KNew	SEC filing ↗ Nov 2, 2026	▾
08	Vienna Powszechne Towarzystwo Emerytalne S.A. Vienna Insurance Group CIK 2033881 · View history	$3.76M 200,000 shares	0.81%	0(0.00%)Unchanged	SEC filing ↗ Nov 5, 2026	▾
09	BARCLAYS PLC CIK 312069 · View history	$2.91M 154,558 shares	0.00%	+105.86K(+217.40%)Added	SEC filing ↗ Nov 6, 2026	▾
10	Torray Investment Partners LLC CIK 98758 · View history	$2.51M 133,654 shares	0.33%	-181(-0.10%)Reduced	SEC filing ↗ Oct 30, 2026	▾
11	Russell Investments Group, Ltd. CIK 1692234 · View history	$2.46M 130,909 shares	0.00%	-4.10K(-3.00%)Reduced	SEC filing ↗ Nov 6, 2026	▾
12	DEUTSCHE BANK AG\ CIK 948046 · View history	$1.65M 87,826 shares	0.00%	-7.49K(-7.90%)Reduced	SEC filing ↗ Nov 6, 2026	▾
13	CITIGROUP INC CIK 831001 · View history	$1.14M 60,876 shares	0.00%	-134.83K(-68.90%)Reduced	SEC filing ↗ Nov 4, 2026	▾
14	Pavaki Capital Management LLC CIK 2143027 · View history	$1.13M 60,000 shares	0.56%	0(0.00%)Unchanged	SEC filing ↗ Oct 26, 2026	▾
15	Creative Planning CIK 1540235 · View history	$883.00K 46,968 shares	0.00%	+23.55K(+100.60%)Added	SEC filing ↗ Nov 2, 2026	▾
16	Assenagon Asset Management S.A. CIK 1546007 · View history	$784.66K 41,737 shares	0.00%	0(0.00%)Unchanged	SEC filing ↗ Oct 15, 2026	▾
17	PROFUND ADVISORS LLC CIK 1129919 · View history	$737.28K 39,217 shares	0.02%	-10.20K(-20.60%)Reduced	SEC filing ↗ Oct 29, 2026	▾
18	Harbour Capital Advisors, LLC CIK 1682501 · View history	$661.48K 35,185 shares	0.12%	+14.54K(+70.40%)Added	SEC filing ↗ Oct 13, 2026	▾
19	Inspire Investing, LLC CIK 1670139 · View history	$641.49K 34,122 shares	0.03%	+3.16K(+10.20%)Added	SEC filing ↗ Oct 22, 2026	▾
20	Diversified Trust Co CIK 1479844 · View history	$609.50K 32,420 shares	0.01%	0(0.00%)Unchanged	SEC filing ↗ Nov 6, 2026	▾

Showing 20 / 73 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

Cancelled or null records excluded

Disclosed shares

7,469,875

Not deduplicated across managers

Disclosed value

$175.64M

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

Syndax Pharmaceuticals Inc · Q3 2026

Explore all 73 reporting institutions.

This page includes 20 of 73 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.

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Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.