Syndax Pharmaceuticals Inc: which funds bought and sold

Institutions that bought and sold Syndax Pharmaceuticals shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.

Between March 31, 2026 and June 30, 2026, 128 institutions that filed 13F reports for both quarters added to or opened positions in Syndax Pharmaceuticals, and 115 cut or closed them. Together they added a net 7.6M shares, +7.5% on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 710K shares (+2.2%); index fund managers were net buyers of 2.9M shares (+12.8%). 34 opened a new position and 38 sold out entirely.

Bought, Q2 2026 128 institutions, 34 of them new holders Sold, Q2 2026 115 institutions, 38 of them sold out

Net change, all compared +7.6M shares (+7.5%)

Net change, active managers +710K shares (+2.2%), 20 bought, 30 sold

Buyers versus sellers

institutions compared, 275

128 bought 32 115 sold

Active managers and hedge funds 20 bought · 30 sold · +710K

Index fund managers 9 bought · 2 sold · +2.9M

Other institutions 99 bought · 83 sold · +3.9M

Biggest buyers

by change in shares held

Biggest buyers
Institution	Change in shares	Shares June 30, 2026	Value
Millennium Management LLC Hedge fund	+1.9M +929.4%	2.1M	$44.9M
State Street Corp Index funds	+1.2M +27.7%	5.7M	$124M
Loomis Sayles & Co L P Active manager	+924K New position	924K	$20.2M
Goldman Sachs Group Inc	+864K +17.3%	5.9M	$128M
Candriam S.C.A.	+771K +83.3%	1.7M	$37M
Blackrock, Inc. Index funds	+766K +9.3%	9.0M	$197M
UBS Group AG	+740K +64.2%	1.9M	$41.4M
Orbimed Advisors LLC	+580K +60.2%	1.5M	$33.7M
First Trust Advisors LP	+457K New position	457K	$10M
Qube Research & Technologies Ltd Hedge fund	+441K +1223.8%	477K	$10.4M
Prosight Management, LP	+430K +55.8%	1.2M	$26.2M
Geode Capital Management, LLC Index funds	+427K +19.8%	2.6M	$56.5M
Trails Edge Capital Partners, LP	+408K +58.2%	1.1M	$24.3M
Jump Financial, LLC	+403K New position	403K	$8.8M
Jupiter Asset Management Ltd Active manager	+367K New position	367K	$8M
Jones Hill Capital LP	+340K New position	340K	$7.4M
Silverarc Capital Management, LLC	+325K +36.6%	1.2M	$26.5M
Alyeska Investment Group, L.P. Hedge fund	+309K New position	309K	$6.7M
Verition Fund Management LLC Hedge fund	+305K New position	305K	$6.7M
Panagora Asset Management Inc Active manager	+297K +119.1%	547K	$11.9M

Biggest buyers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Millennium Management LLC Hedge fund	+1.9M +929.4%	2.1M	$44.9M
Loomis Sayles & Co L P Active manager	+924K New position	924K	$20.2M
Qube Research & Technologies Ltd Hedge fund	+441K +1223.8%	477K	$10.4M
Jupiter Asset Management Ltd Active manager	+367K New position	367K	$8M
Alyeska Investment Group, L.P. Hedge fund	+309K New position	309K	$6.7M
Verition Fund Management LLC Hedge fund	+305K New position	305K	$6.7M
Panagora Asset Management Inc Active manager	+297K +119.1%	547K	$11.9M
Squarepoint Ops LLC Hedge fund	+189K +104.0%	370K	$8.1M
Franklin Resources Inc Active manager	+136K +6.3%	2.3M	$50M
Algert Global LLC Hedge fund	+123K +13.2%	1.1M	$23M

Biggest sellers

by change in shares held

Biggest sellers
Institution	Change in shares	Shares June 30, 2026	Value
Stempoint Capital LP	−2.4M Sold out	0	—
Point72 Asset Management, L.P. Hedge fund	−2.0M Sold out	0	—
Walleye Capital LLC Hedge fund	−379K −98.5%	5,636	$123,203
Citadel Advisors LLC Hedge fund	−373K −59.1%	258K	$5.6M
D. E. Shaw & Co., Inc. Hedge fund	−362K −22.6%	1.2M	$27.1M
Integral Health Asset Management, LLC	−350K Sold out	0	—
Jane Street Group, LLC	−336K Sold out	0	—
Morgan Stanley	−305K −34.1%	589K	$12.9M
Canada Pension Plan Investment Board	−230K Sold out	0	—
Bank Of America Corp	−205K −4.8%	4.0M	$88.4M
Essex Investment Management Co LLC	−199K Sold out	0	—
Alliancebernstein L.P. Active manager	−183K −63.3%	106K	$2.5M
Renaissance Technologies LLC Hedge fund	−177K −35.4%	322K	$7M
FMR LLC Active manager	−168K −96.8%	5,574	$121,852
Pale Fire Capital Se	−159K −55.9%	126K	$2.7M
Nuveen, LLC	−130K −8.7%	1.4M	$29.8M
AQR Capital Management LLC Hedge fund	−127K −13.0%	853K	$18.7M
Pfm Health Sciences, LP Hedge fund	−127K −51.7%	118K	$2.6M
Healthcare Of Ontario Pension Plan Trust Fund	−124K −37.5%	207K	$4.5M
Ensign Peak Advisors, Inc	−123K −12.4%	868K	$19M

Biggest sellers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Point72 Asset Management, L.P. Hedge fund	−2.0M Sold out	0	—
Walleye Capital LLC Hedge fund	−379K −98.5%	5,636	$123,203
Citadel Advisors LLC Hedge fund	−373K −59.1%	258K	$5.6M
D. E. Shaw & Co., Inc. Hedge fund	−362K −22.6%	1.2M	$27.1M
Alliancebernstein L.P. Active manager	−183K −63.3%	106K	$2.5M
Renaissance Technologies LLC Hedge fund	−177K −35.4%	322K	$7M
FMR LLC Active manager	−168K −96.8%	5,574	$121,852
AQR Capital Management LLC Hedge fund	−127K −13.0%	853K	$18.7M
Pfm Health Sciences, LP Hedge fund	−127K −51.7%	118K	$2.6M
Cinctive Capital Management LP Hedge fund	−117K Sold out	0	—

New positions

largest by value

Institution	Shares	Value June 30, 2026
Loomis Sayles & Co L PActive manager	924K	$20.2M
First Trust Advisors LP	457K	$10M
Jump Financial, LLC	403K	$8.8M
Jupiter Asset Management LtdActive manager	367K	$8M
Jones Hill Capital LP	340K	$7.4M
Alyeska Investment Group, L.P.Hedge fund	309K	$6.7M
Verition Fund Management LLCHedge fund	305K	$6.7M
Mackenzie Financial Corp	280K	$6.1M
Y-Intercept (Hong Kong) Ltd	213K	$4.6M
Schroder Investment Management GroupActive manager	115K	$2.5M

Sold out

largest by value

Institution	Shares	Value March 31, 2026
Stempoint Capital LP	2.4M	$56.8M
Point72 Asset Management, L.P.Hedge fund	2.0M	$46.4M
Integral Health Asset Management, LLC	350K	$8.2M
Jane Street Group, LLC	336K	$7.8M
Canada Pension Plan Investment Board	230K	$5.4M
Essex Investment Management Co LLC	199K	$4.6M
Cinctive Capital Management LPHedge fund	117K	$2.7M
Exoduspoint Capital Management, LPHedge fund	105K	$2.5M
Yelin Lapidot Holdings Management Ltd.	96K	$2.2M
Tudor Investment Corp Et AlHedge fund	69K	$1.6M

Who holds the shares

13F holdings at June 30, 2026

Institutions reporting: 241
Ten largest holders: 44.7%
Index fund managers: 23.7%
Active managers and hedge funds: 30.0%

Buying and selling by type of institution, March 31, 2026 to June 30, 2026
Type	Bought	Sold	New	Sold out	Net change in shares	Net %
Active managers and hedge funds	20	30	7	13	+710K	+2.2%
Index fund managers	9	2	0	0	+2.9M	+12.8%
Other institutions	99	83	27	25	+3.9M	+8.5%

Active managers and hedge funds: a list we maintain of about 400 well-known stock-picking firms and hedge funds, matched by SEC registration number (CIK) and checked against the filer names each quarter. Index fund managers: the large index houses, such as BlackRock, Vanguard, State Street, Geode and Northern Trust. Every other filer (banks, brokers, wealth managers, pension funds, insurers and firms not on the list) counts as another institution. A firm that files under several SEC registrations appears once for each.

What these filings can and cannot tell you

Form 13F lists the long positions in US-listed shares held by investment managers with more than $100 million in such holdings. Managers file it up to 45 days after each quarter ends, so this page shows what funds held at the end of each quarter, not what they are doing now: a position may have changed since. Short positions, most derivatives and smaller managers are not included, and a cut can mean a fund lost clients or rebalanced rather than a view on Syndax Pharmaceuticals.

Only managers that filed a holdings report for both quarters are compared (275 here). 8 other holders are left out: first-time or late filers, firms that changed their SEC registration, and filings that withheld positions under confidential treatment, any of which would otherwise look like a new position or a sale. Figures are as reported by each manager in the SEC's quarterly 13F data sets; option positions are excluded.

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