SNDX · Syndax Pharmaceuticals Inc · Holdings

$12.90 -0.75 (-5.49%) At close · Oct 16

Russell 2000 member Rebalance outlook locked

Market Cap

$1.15B

89.30M

Volume · Oct 16 2.84M Avg daily vol (3M) 1.67M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Use institutional holdings through the 13F API or MCP →

Some SEC filings for this period have not finished importing. Holder totals and changes may be incomplete; these filings remain queued for recovery.

The Sep 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out. Each fund's Change is measured against its own previous reported quarter, shown in the Reported column. Pick a completed quarter in the Quarter selector below to put every fund on one quarter and see the stock-wide activity breakdown.

Quarter:

Holders: 242

Total Value: $2,370,365,509

Total Shares: 108,510,743

Showing 1–100 of 251 holdings by value · page 1 of 3

Institutional Ownership Trend

27 quarters

Holder Concentration

Across 243 13F filers

Top Holder

8.3%

of institutional value

Top 5

30.0%

of institutional value

Top 10

44.4%

of institutional value

HHI

295

Broadly held

Showing 100 of 251

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

BlackRock, Inc.

$197,177,323

8.32%

9,020,006

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BLACKROCK FINANCIAL MANAGEMENT INC/DE	287,052	$6,274,956	3.2%	Sole
BlackRock Investment Management (Australia) Ltd	127	$2,776	0.0%	Sole
BlackRock Asset Management Canada Ltd	621	$13,575	0.0%	Sole
BlackRock Investment Management, LLC	331,962	$7,256,689	3.7%	Sole
BLACKROCK ADVISORS LLC	775,799	$16,958,966	8.6%	Sole
BlackRock Fund Advisors	3,971,387	$86,814,519	44.0%	Sole
BlackRock Institutional Trust Company, N.A.	3,120,681	$68,218,086	34.6%	Sole
BlackRock Japan Co. Ltd	7,580	$165,698	0.1%	Sole
BlackRock Fund Managers Ltd.	15,244	$333,233	0.2%	Sole
BlackRock Investment Management (UK) Ltd.	121,052	$2,646,196	1.3%	Sole
BlackRock Asset Management Ireland Ltd	306,182	$6,693,138	3.4%	Sole
BlackRock (Luxembourg) S.A.	7,430	$162,419	0.1%	Sole
BlackRock Asset Management Schweiz AG	15,125	$330,632	0.2%	Sole
Aperio Group, LLC	59,730	$1,305,697	0.7%	Sole
SpiderRock Advisors, LLC	34	$743	0.0%	Sole

Kynam Capital Management, LP

$175,993,963

7.42%

8,050,959

GOLDMAN SACHS GROUP INC

$128,127,252

5.41%

5,861,265

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GOLDMAN SACHS & CO. LLC	5,439,905	$118,916,323	92.8%	Defined
GOLDMAN SACHS ASSET MANAGEMENT, L.P.	410,889	$8,982,033	7.0%	Defined
Goldman Sachs Trust Company, N.A. joint	10,471	$228,896	0.2%	Other

STATE STREET CORP

$123,693,148

5.22%

5,658,424

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
STATE STREET GLOBAL ADVISORS EUROPE LIMITED joint	5,658,424	$123,693,148	100.0%	Defined

BANK OF AMERICA CORP /DE/

$88,425,753

3.73%

4,045,094

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BANK OF AMERICA NA	495,102	$10,822,929	12.2%	Defined
MERRILL LYNCH, PIERCE, FENNER & SMITH INC.	646,321	$14,128,577	16.0%	Defined
BOFA SECURITIES, INC.	2,125,979	$46,473,900	52.6%	Defined
MANAGED ACCOUNT ADVISORS LLC	777,692	$17,000,347	19.2%	Defined

VANGUARD CAPITAL MANAGEMENT LLC

$85,863,719

3.62%

3,927,892

DEERFIELD MANAGEMENT COMPANY, L.P.

$82,628,614

3.49%

3,779,900

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Deerfield UGP, LLC	3,779,900	$82,628,614	100.0%	Defined

Eversept Partners, LP

$61,168,870

2.58%

2,798,210

GEODE CAPITAL MANAGEMENT, LLC

$56,489,212

2.38%

2,584,136

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GEODE CAPITAL MANAGEMENT TRUST COMPANY, LLC	329,123	$7,194,628	12.7%	Defined
Held directly	2,255,013	$49,294,584	87.3%	Defined

Hood River Capital Management LLC

$56,055,138

2.36%

2,564,279

KINGDON CAPITAL MANAGEMENT, L.L.C.

$54,650,000

2.31%

2,500,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Manager 1 joint	2,500,000	$54,650,000	100.0%	Defined

FRANKLIN RESOURCES INC

$49,982,867

2.11%

2,286,499

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
FIDUCIARY TRUST INTERNATIONAL LLC	5,888	$128,711	0.3%	Defined
FRANKLIN ADVISERS INC	2,280,611	$49,854,156	99.7%	Defined

MILLENNIUM MANAGEMENT LLC

$44,899,565

1.89%

2,053,960

VANGUARD PORTFOLIO MANAGEMENT LLC

$42,010,460

1.77%

1,921,796

UBS Group AG

$41,397,374

1.75%

1,893,750

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Financial Services Inc	25,298	$553,014	1.3%	Defined
UBS AG	1,632,252	$35,681,028	86.2%	Defined
UBS Switzerland AG	85,500	$1,869,030	4.5%	Defined
UBS Europe SE	150,700	$3,294,302	8.0%	Defined

Elmind Capital, LP

$40,550,300

1.71%

1,855,000

BNP PARIBAS ASSET MANAGEMENT Holding S.A.

$39,133,180

1.65%

1,790,173

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BNP PARIBAS ASSET MANAGEMENT Europe	1,230	$26,887	0.1%	Defined
BNP Paribas Asset Management USA, Inc.	1,788,943	$39,106,293	99.9%	Defined

Candriam S.C.A.

$37,075,434

1.56%

1,696,040

Soleus Capital Management, L.P.

$35,588,932

1.50%

1,628,039

TWO SIGMA INVESTMENTS, LP

$34,497,812

1.46%

1,578,125

ORBIMED ADVISORS LLC

$33,708,120

1.42%

1,542,000

Nuveen, LLC

$29,829,608

1.26%

1,364,575

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Nuveen Asset Management, LLC joint	44,815	$979,655	3.3%	Defined
TIAA CREF INVESTMENT MANAGEMENT LLC joint	429,857	$9,396,674	31.5%	Defined
TEACHERS ADVISORS, LLC joint	889,903	$19,453,279	65.2%	Defined

MPM BIOIMPACT LLC

$29,150,812

1.23%

1,333,523

Aisling Capital Management LP

$28,785,379

1.21%

1,316,806

Woodline Partners LP

$27,341,613

1.15%

1,250,760

D. E. Shaw & Co., Inc.

$27,105,393

1.14%

1,239,954

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
D. E. SHAW & CO, L.P.	950,610	$20,780,334	76.7%	Defined
D. E. Shaw Investment Management, L.L.C. joint	289,344	$6,325,059	23.3%	Defined

Catalio Capital Management, LP

$26,575,158

1.12%

1,215,698

SILVERARC CAPITAL MANAGEMENT, LLC

$26,546,565

1.12%

1,214,390

Prosight Management, LP

$26,232,000

1.11%

1,200,000

Trails Edge Capital Partners, LP

$24,264,600

1.02%

1,110,000

ALGERT GLOBAL LLC

$22,985,024

0.97%

1,051,465

Bank of New York Mellon Corp

$22,736,122

0.96%

1,040,079

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Mellon Investments Corporation	74,574	$1,630,187	7.2%	Defined
BNY Mellon Securities Corporation	9,643	$210,795	0.9%	Defined
The Bank of New York Mellon	159,329	$3,482,931	15.3%	Defined
BNY Mellon, NA joint	1,078	$23,565	0.1%	Defined
BNY Mellon Advisors, Inc. joint	8,233	$179,973	0.8%	Other
Newton Investment Management North America, LLC joint	787,221	$17,208,650	75.7%	Defined
Held directly	1	$21	0.0%	Defined

SPHERA FUNDS MANAGEMENT LTD.

$22,179,287

0.94%

1,014,606

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Sphera Global Healthcare Management LP joint	1,014,606	$22,179,287	100.0%	Defined

LOOMIS SAYLES & CO L P

$20,190,420

0.85%

923,624

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
LOOMIS SAYLES TRUST COMPANY, LLC	155,618	$3,401,809	16.8%	Defined
Held directly	768,006	$16,788,611	83.2%	Defined

Parkman Healthcare Partners LLC

$19,176,816

0.81%

877,256

Ensign Peak Advisors, Inc

$18,970,785

0.80%

867,831

Palo Alto Investors LP

$18,908,593

0.80%

864,986

AQR CAPITAL MANAGEMENT LLC

$18,653,222

0.79%

853,304

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
RF&L WEALTH MANAGEMENT, LLC	24	$524	0.0%	Other
Prism Planning Partners LLC	100	$2,186	0.0%	Other
Arax Advisory Partners	5,052	$110,436	0.6%	Other
HALBERT HARGROVE GLOBAL ADVISORS, LLC	3,073	$67,175	0.4%	Other
Stokes Family Office, LLC	2,329	$50,911	0.3%	Other
Held directly	842,726	$18,421,990	98.8%	Defined

NORTHERN TRUST CORP

$18,483,436

0.78%

845,537

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
NORTHERN TRUST CO joint	777,248	$16,990,640	91.9%	Defined
NORTHERN TRUST GLOBAL INVESTMENTS LTD	54,553	$1,192,528	6.5%	Defined
DWS INVESTMENT MANAGEMENT AMERICAS, INC joint	13,736	$300,268	1.6%	Other

CHARLES SCHWAB INVESTMENT MANAGEMENT INC

$17,800,663

0.75%

814,303

VANGUARD FIDUCIARY TRUST CO

$13,848,506

0.58%

633,509

MORGAN STANLEY

$12,875,078

0.54%

588,979

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY & CO. LLC	251,911	$5,506,774	42.8%	Defined
MORGAN STANLEY CAPITAL SERVICES, LLC	172,590	$3,772,817	29.3%	Defined
MORGAN STANLEY SMITH BARNEY LLC	28,137	$615,074	4.8%	Defined
PARAMETRIC PORTFOLIO ASSOCIATES LLC	136,341	$2,980,413	23.1%	Defined

Rhenman & Partners Asset Management AB

$12,247,065

0.52%

560,250

Apis Capital Advisors, LLC

$12,154,160

0.51%

556,000

PANAGORA ASSET MANAGEMENT INC

$11,946,861

0.50%

546,517

Qube Research & Technologies Ltd

$10,431,198

0.44%

477,182

FIRST TRUST ADVISORS LP

$9,983,462

0.42%

456,700

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$9,926,647

0.42%

454,101

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	454,101	$9,926,647	100.0%	Other

Granahan Investment Management, LLC

$9,771,157

0.41%

446,988

Knott David M Jr

$9,558,175

0.40%

437,245

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Dorset Partners LLC	437,245	$9,558,175	100.0%	Defined

Jump Financial, LLC

$8,806,213

0.37%

402,846

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jump Trading Holdings, LLC	1,546	$33,795	0.4%	Defined
Leap GP LLC joint	401,300	$8,772,418	99.6%	Defined

Aberdeen Group plc

$8,148,664

0.34%

372,766

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
abrdn Inc.	372,766	$8,148,664	100.0%	Defined

Squarepoint Ops LLC

$8,095,129

0.34%

370,317

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Squarepoint Capital LLP	370,317	$8,095,129	100.0%	Defined

JUPITER ASSET MANAGEMENT LTD

$8,013,176

0.34%

366,568

HRT FINANCIAL LP

$7,938,393

0.33%

363,147

AMERIPRISE FINANCIAL INC

$7,582,184

0.32%

346,852

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Columbia Management Investment Advisers, LLC	344,354	$7,527,578	99.3%	Defined
Ameriprise Financial Services, LLC	2,498	$54,606	0.7%	Defined

Jones Hill Capital LP

$7,432,400

0.31%

340,000

DAFNA Capital Management LLC

$7,328,674

0.31%

335,255

Hennion & Walsh Asset Management, Inc.

$7,263,643

0.31%

386,364

ENVESTNET ASSET MANAGEMENT INC

$7,161,707

0.30%

327,617

RENAISSANCE TECHNOLOGIES LLC

$7,030,176

0.30%

321,600

Brevan Howard Capital Management LP

$6,756,160

0.29%

309,065

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Brevan Howard Investment Products Ltd	309,065	$6,756,160	100.0%	Defined

Alyeska Investment Group, L.P.

$6,743,963

0.28%

308,507

Verition Fund Management LLC

$6,665,966

0.28%

304,939

MACKENZIE FINANCIAL CORP

$6,122,526

0.26%

280,079

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$5,670,484

0.24%

259,400

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	259,400	$5,670,484	100.0%	Other

CITADEL ADVISORS LLC

$5,645,957

0.24%

258,278

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	258,278	$5,645,957	100.0%	Defined

Trexquant Investment LP

$5,595,045

0.24%

255,949

SECTOR GAMMA AS

$5,284,414

0.22%

241,739

Schonfeld Strategic Advisors LLC

$5,174,633

0.22%

236,717

JPMORGAN CHASE & CO

$5,059,406

0.21%

231,446

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
J.P. Morgan Trust Co of Delaware	251	$5,486	0.1%	Other
JPMorgan Chase Bank, N.A.	46,493	$1,016,336	20.1%	Defined
J.P. Morgan Investment Management Inc.	179,170	$3,916,656	77.4%	Defined
J.P. Morgan Securities LLC	1	$21	0.0%	Defined
J.P. Morgan Securities plc	5,531	$120,907	2.4%	Defined

Pinnacle Financial Partners, Inc.

$4,747,401

0.20%

217,173

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SYNOVUS TRUST CO NA	217,173	$4,747,401	100.0%	Defined

Man Group plc

$4,671,547

0.20%

213,703

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Numeric Investors LLC	213,703	$4,671,547	100.0%	Defined

Pictet Asset Management Holding SA

$4,545,480

0.19%

207,936

HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND

$4,530,485

0.19%

207,250

Vienna Powszechne Towarzystwo Emerytalne S.A. Vienna Insurance Group

$4,372,000

0.18%

200,000

CITIGROUP INC

$4,278,066

0.18%

195,703

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citibank, N.A. joint	20	$437	0.0%	Defined
Citigroup Financial Products Inc. joint	195,683	$4,277,629	100.0%	Defined

SEI INVESTMENTS CO

$4,221,908

0.18%

193,134

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SEI INVESTMENTS MANAGEMENT CORP	1,843	$40,287	1.0%	Sole
SEI TRUST CO	191,291	$4,181,621	99.0%	Sole

NOMURA ASSET MANAGEMENT INTERNATIONAL INC.

$3,934,800

0.17%

180,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
NOMURA HOLDINGS INC joint	180,000	$3,934,800	100.0%	Defined

Swiss National Bank

$3,674,666

0.16%

168,100

Atom Investors LP

$3,552,774

0.15%

162,524

UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC

$3,526,517

0.15%

161,323

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Group AG	2,023	$44,222	1.3%	Defined
UBS Asset Management Switzerland AG	123,731	$2,704,759	76.7%	Defined
UBS Asset Management (UK) Ltd.	18,761	$410,114	11.6%	Defined
Held directly	16,808	$367,422	10.4%	Defined

SummitTX Capital, L.P.

$3,077,822

0.13%

140,797

Invesco Ltd.

$3,017,990

0.13%

138,060

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Invesco Advisers, Inc. joint	13,801	$301,689	10.0%	Defined
Invesco Trust Co joint	35,470	$775,374	25.7%	Defined
Invesco Capital Management LLC	88,789	$1,940,927	64.3%	Defined

Russell Investments Group, Ltd.

$2,951,360

0.12%

135,012

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Russell Investment Management, LLC	25,038	$547,330	18.5%	Defined
Russell Investments Capital, LLC	102,836	$2,247,994	76.2%	Defined
Russell Investments Trust Company	7,138	$156,036	5.3%	Defined

Torray Investment Partners LLC

$2,925,633

0.12%

133,835

RHUMBLINE ADVISERS

$2,893,345

0.12%

132,358

WELLS FARGO & COMPANY/MN

$2,842,978

0.12%

130,054

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
WELLS FARGO BANK N A	126,011	$2,754,600	96.9%	Defined
WELLS FARGO ADVISORS FINANCIAL NETWORK, LLC	216	$4,721	0.2%	Defined
WELLS FARGO CLEARING SERVICES, LLC	3,809	$83,264	2.9%	Defined
WELLS FARGO INVESTMENT INSTITUTE, INC.	18	$393	0.0%	Defined

PRICE T ROWE ASSOCIATES INC /MD/

$2,802,430

0.12%

128,199

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
T. Rowe Price International Ltd	128,199	$2,802,430	100.0%	Defined

Pale Fire Capital SE

$2,744,523

0.12%

125,550

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Barta Jan joint	125,550	$2,744,523	100.0%	Defined

CAPITAL FUND MANAGEMENT S.A.

$2,734,489

0.12%

125,091

WELLINGTON MANAGEMENT GROUP LLP

$2,715,906

0.11%

124,241

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Wellington Management Company LLP	108,244	$2,366,213	87.1%	Defined
Wellington Managment Canada LLC	913	$19,958	0.7%	Defined
Wellington Trust Company, NA joint	12,994	$284,048	10.5%	Defined
Wellington Management Europe GmbH	2,090	$45,687	1.7%	Defined

PFM Health Sciences, LP

$2,588,704

0.11%

118,422

SCHRODER INVESTMENT MANAGEMENT GROUP

$2,518,446

0.11%

115,208

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Schroder Investment Management Limited	113,967	$2,491,318	98.9%	Sole
Schroder Investment Management North America Inc.	1,241	$27,128	1.1%	Sole

ALLIANCEBERNSTEIN L.P.

$2,318,034

0.10%

106,040

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Equitable Holdings, Inc.	106,040	$2,318,034	100.0%	Defined

Rafferty Asset Management, LLC

$2,137,623

0.09%

97,787

DEUTSCHE BANK AG\

$2,083,585

0.09%

95,315

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
DWS INVESTMENT MANAGEMENT AMERICAS, INC	1,680	$36,724	1.8%	Defined
DWS Investments UK Ltd	93,635	$2,046,861	98.2%	Defined

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM

$2,043,494

0.09%

93,481

HUSSMAN STRATEGIC ADVISORS, INC.

$1,836,240

0.08%

84,000

Aquatic Capital Management LLC

$1,725,234

0.07%

78,922

Showing the top 100 of 251 holders. Create a free account to see every holder, past quarters, search, filters and CSV export.

Key facts CIK 1395937 CUSIP 87164F105 13F (30d) 17 filings 17 filers Visit website Investor relations