Syndax Pharmaceuticals SNDX Institutional Ownership

NASDAQ SNDX

$13.15 -0.10 (-0.75%)

At close: Oct 21, 2026 · 4:00 PM EDT

Institutions by Trading Activity

242 Institutions

Increased 133 55.0%

Unchanged 33 13.6%

Reduced 76 31.4%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

—

13F totals exceed reported shares outstanding

Shares Held by Institutions

108.10Mn

of 89.15Mn outstanding

▲+9.65% QoQ

Shares Outstanding

89.15Mn

Institutional Investors

242

filed 13F for Jun 2026

▼-1 vs prior quarter

Net Shares Added (QoQ)

+9.51Mn

accumulated since last quarter

Value of Holdings

$1.43Bn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Updated Oct 11, 2026

Syndax Pharmaceuticals Inc (NASDAQ:SNDX) was held by 242 institutional investors that filed 13F reports for the quarter ended June 30, 2026.

Total shares held in Syndax Pharmaceuticals rose 9.65% versus Q1 2026, while the number of holders rose 13.08% versus Q2 2025.
Of the 242 holders, 133 added to their positions, 76 reduced their stakes and 33 left their positions unchanged in Q2 2026.
Combined, institutional investors held 108.1Mn shares of SNDX as of Q2 2026, up 9.51Mn from the prior quarter and up 8.01Mn from a year earlier.
As of June 30, 2026, the biggest holder of Syndax Pharmaceuticals was BlackRock, Inc. with 9.02Mn shares.
Among holders that already owned Syndax Pharmaceuticals, the biggest buyers in Q2 2026 were Millennium Management LLC (+1.85Mn shares), State Street Corp (+1.23Mn shares), Goldman Sachs Group Inc (+864.48K shares), Candriam S.C.A. (+770.71K shares) and BlackRock, Inc. (+765.58K shares).
On the other side, among holders that kept a position in Syndax Pharmaceuticals, the largest reductions in Q2 2026 came from Walleye Capital LLC (-379.34K shares), Citadel Advisors LLC (-372.66K shares), D. E. Shaw & Co., Inc. (-361.94K shares), Morgan Stanley (-304.95K shares) and Bank of America Corp (-204.74K shares).
According to Business Quant data, the leading holders of SNDX for Q2 2026 were BlackRock, Inc. (9.02Mn shares), Kynam Capital Management, LP (8.05Mn shares), Goldman Sachs Group Inc (5.86Mn shares), State Street Corp (5.66Mn shares), Bank of America Corp (4.05Mn shares), Vanguard Capital Management LLC (3.93Mn shares), Deerfield Management Company, L.P. (3.78Mn shares), Eversept Partners, LP (2.8Mn shares), Geode Capital Management, LLC (2.58Mn shares) and Hood River Capital Management LLC (2.56Mn shares).

Form 13F Holdings

242 Institutional Holders

Report period 30 Jun, 2026

Total shares held 108.10Mn

Of outstanding —

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	BlackRock, Inc.	0002012383	9,020,006	10.12%	▲765,580	+9.27%	$197.18Mn
2	Kynam Capital Management, LP	0001907884	8,050,959	9.03%	0	0.00%	$175.99Mn
3	Goldman Sachs Group Inc	0000886982	5,861,265	6.57%	▲864,478	+17.30%	$128.13Mn
4	State Street Corp	0000093751	5,658,424	6.35%	▲1,228,348	+27.73%	$123.69Mn
5	Bank Of America Corp /De/	0000070858	4,045,094	4.54%	▼204,742	-4.82%	$88.43Mn
6	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	3,927,892	4.41%	▲105,313	+2.76%	$85.86Mn
7	DEERFIELD MANAGEMENT COMPANY, L.P.	0001009258	3,779,900	4.24%	0	0.00%	$82.63Mn
8	Eversept Partners, LP	0001697013	2,798,210	3.14%	▼87,412	-3.03%	$61.17Mn
9	GEODE CAPITAL MANAGEMENT, LLC	0001214717	2,584,136	2.90%	▲427,078	+19.80%	$56.50Mn
10	Hood River Capital Management LLC	0001578177	2,564,279	2.88%	▲209,994	+8.92%	$56.06Mn
11	KINGDON CAPITAL MANAGEMENT, L.L.C.	0001000097	2,500,000	2.80%	0	0.00%	$54.65Mn
12	Franklin Templeton Inc	0000038777	2,286,499	2.56%	▲136,420	+6.34%	$49.98Mn
13	MILLENNIUM MANAGEMENT LLC	0001273087	2,053,960	2.30%	▲1,854,436	+929.43%	$44.90Mn
14	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	1,921,796	2.16%	▲184,655	+10.63%	$42.01Mn
15	UBS Group AG	0001610520	1,893,750	2.12%	▲740,088	+64.15%	$41.40Mn
16	Elmind Capital, LP	0002052213	1,855,000	2.08%	0	0.00%	$40.55Mn
17	BNP Paribas Asset Management Holding S.A.	0001520354	1,790,173	2.01%	▲57,632	+3.33%	$39.13Mn
18	Candriam S.C.A.	0001537014	1,696,040	1.90%	▲770,708	+83.29%	$37.04Mn
19	Soleus Capital Management, L.P.	0001802630	1,628,039	1.83%	▼98,869	-5.73%	$35.59Mn
20	TWO SIGMA INVESTMENTS, LP	0001179392	1,578,125	1.77%	▼1,471	-0.09%	$34.50Mn

Showing 1 to 20 of 242 holders