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Disclosery

SNDX SYNDAX PHARMACEUTICALS INC

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COM (common), issuer CIK 1395937

234 managers (242 13F filers) reported a position in SNDX shares at 2026-06-30, 108,096,508 shares in all. 34 filers opened a position and 39 filers sold out during the quarter.

Managers
234
13F filers
242
New
34
Added
95
Reduced
77
Sold out
39
Shares held by filers
108,096,508

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q2 2026

Filers in the available 13F reports with a share position at 2026-06-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
BlackRock, Inc.in group BlackRock, Inc.9,020,006$197M<0.01%+765,58013F-HRTimelineGroup
Kynam Capital Management, LP8,050,959$176M9.73%013F-HRTimeline
VANGUARD GROUP INCgroup of 6 filers holding6,595,559$144M+326,225Timeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC5,861,265$128M0.01%+864,47813F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP5,658,424$124M<0.01%+1,228,34813F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/4,045,094$88.4M0.01%-204,74213F-HRTimelineGroup
DEERFIELD MANAGEMENT COMPANY, L.P.in group DEERFIELD MANAGEMENT COMPANY,…3,779,900$82.6M0.86%013F-HRTimelineGroup
Eversept Partners, LP2,798,210$61.2M3.33%-87,41213F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC2,584,136$56.5M<0.01%+427,07813F-HRTimelineGroup
Hood River Capital Management LLC2,564,279$56.1M0.41%+209,99413F-HRTimeline
KINGDON CAPITAL MANAGEMENT, L.L.C.2,500,000$54.6M7.37%013F-HRTimeline
FRANKLIN RESOURCES INCin group Franklin Resources2,286,499$50M0.01%+136,42013F-HRTimelineGroup
UBS Group AGgroup of 2 filers holding2,055,073$44.9M+751,614Timeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC2,053,960$44.9M0.03%+1,854,43613F-HRTimelineGroup
Elmind Capital, LP1,855,000$40.6M10.19%013F-HRTimeline
BNP PARIBAS ASSET MANAGEMENT Holding S.…in group BNP PARIBAS ASSET MANAGEMENT …1,790,173$39.1M0.04%+57,63213F-HRTimelineGroup
Candriam S.C.A.1,696,040$37M0.17%+770,70813F-HRTimeline
Soleus Capital Management, L.P.1,628,039$35.6M1.23%-98,86913F-HRTimeline
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP1,578,125$34.5M0.03%-1,47113F-HRTimelineGroup
ORBIMED ADVISORS LLCin group ORBIMED ADVISORS LLC1,542,000$33.7M0.64%+579,70013F-HRTimelineGroup
Nuveen, LLCin group TIAA1,364,575$29.8M0.01%-130,07013F-HRTimelineGroup
MPM BIOIMPACT LLC1,333,523$29.2M1.78%-7,21013F-HRTimeline
Aisling Capital Management LP1,316,806$28.8M6.1%013F-HRTimeline
Woodline Partners LP1,250,760$27.3M0.08%013F-HRTimeline
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.1,239,954$27.1M0.02%-361,94213F-HRTimelineGroup
Catalio Capital Management, LP1,215,698$26.6M4.99%+172,02813F-HRTimeline
SILVERARC CAPITAL MANAGEMENT, LLCin group SILVERARC CAPITAL MANAGEMENT,…1,214,390$26.5M2.95%+325,40313F-HRTimelineGroup
Prosight Management, LP1,200,000$26.2M4.52%+430,00013F-HRTimeline
Trails Edge Capital Partners, LP1,110,000$24.3M3.85%+408,17913F-HRTimeline
ALGERT GLOBAL LLC1,051,465$23M0.27%+122,89713F-HRTimeline
Bank of New York Mellon Corpin group Bank of New York Mellon Corp1,040,079$22.7M<0.01%+35,58113F-HRTimelineGroup
SPHERA FUNDS MANAGEMENT LTD.in group SPHERA FUNDS MANAGEMENT LTD.1,014,606$22.2M3.17%+290,04313F-HRTimelineGroup
LOOMIS SAYLES & CO L Pin group LOOMIS SAYLES & CO L P923,624$20.2M0.03%new13F-HRTimelineGroup
Parkman Healthcare Partners LLC877,256$19.2M1.97%-24,25513F-HRTimeline
Ensign Peak Advisors, Inc867,831$19M0.03%-123,13813F-HRTimeline
Palo Alto Investors LP864,986$18.9M2.61%013F-HR/ATimeline
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC853,304$18.7M0.01%-127,01013F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP845,537$18.5M<0.01%+89,81813F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co814,303$17.8M<0.01%+99,15013F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY588,979$12.9M<0.01%-304,95413F-HRTimelineGroup
Rhenman & Partners Asset Management AB560,250$12.2M1.16%+181,00013F-HRTimeline
Apis Capital Advisors, LLC556,000$12.2M1.18%+6,00013F-HRTimeline
PANAGORA ASSET MANAGEMENT INC546,517$11.9M0.04%+297,11013F-HRTimeline
Qube Research & Technologies Ltd477,182$10.4M0.01%+441,13513F-HRTimeline
FIRST TRUST ADVISORS LPin group FIRST TRUST ADVISORS LP456,700$9.98M0.01%new13F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…454,101$9.93M0.01%+257,48013F-HRTimelineGroup
Granahan Investment Management, LLC446,988$9.77M0.35%+140,66713F-HRTimeline
Knott David M Jr437,245$9.56M5.05%+15,24513F-HRTimeline
Jump Financial, LLCin group Jump Financial, LLC402,846$8.81M0.08%new13F-HRTimelineGroup
Aberdeen Group plcin group Aberdeen Group plc372,766$8.15M0.01%+85,79713F-HRTimelineGroup
Squarepoint Ops LLCin group Squarepoint Ops LLC370,317$8.1M0.02%+188,76513F-HRTimelineGroup
JUPITER ASSET MANAGEMENT LTDin group JUPITER ASSET MANAGEMENT LTD366,568$8.01M0.04%new13F-HRTimelineGroup
HRT FINANCIAL LP363,147$7.94M0.01%+274,24313F-HRTimeline
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC346,852$7.58M<0.01%+62,60713F-HRTimelineGroup
Hennion & Walsh Asset Management, Inc.342,883$7.5M0.21%+128,07613F-HRTimeline
Jones Hill Capital LP340,000$7.43M1.58%new13F-HRTimeline
DAFNA Capital Management LLC335,255$7.33M1.4%+117,90013F-HRTimeline
ENVESTNET ASSET MANAGEMENT INCin group ENVESTNET ASSET MANAGEMENT INC327,617$7.16M<0.01%+285,74513F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC321,600$7.03M0.01%-176,60013F-HRTimeline
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…309,065$6.76M0.09%+104,22013F-HRTimelineGroup
Alyeska Investment Group, L.P.in group Alyeska Investment Group, L.P.308,507$6.74M0.02%new13F-HRTimelineGroup
Verition Fund Management LLC304,939$6.67M0.05%new13F-HR/ATimeline
MACKENZIE FINANCIAL CORP280,079$6.12M0.01%new13F-HRTimeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC258,278$5.65M<0.01%-372,66413F-HRTimelineGroup
Trexquant Investment LP255,949$5.6M0.03%+54,17213F-HRTimeline
SECTOR GAMMA AS241,739$5.28M1.15%-44,26813F-HRTimeline
Schonfeld Strategic Advisors LLC236,717$5.17M0.03%-23,90913F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO231,446$5.13M<0.01%-27,07313F-HRTimelineGroup
Pinnacle Financial Partners, Inc.in group Pinnacle Financial Partners, …217,173$4.75M0.03%+14,89113F-HRTimelineGroup
Man Group plcin group Man Group plc213,703$4.67M0.01%+31,68713F-HRTimelineGroup
Y-Intercept (Hong Kong) Ltd212,713$4.65M0.09%new13F-HRTimeline
HEALTHCARE OF ONTARIO PENSION PLAN TRUS…207,250$4.53M0.01%-124,41513F-HRTimeline
Pictet Asset Management Holding SAin group Pictet Asset Management Holdi…207,936$4.53M<0.01%+195,58013F-HRTimelineGroup
Vienna Powszechne Towarzystwo Emerytaln…200,000$4.37M1.15%013F-HRTimeline
CITIGROUP INCin group CITIGROUP INC195,703$4.28M<0.01%+175,37113F-HRTimelineGroup
SEI INVESTMENTS COin group SEI INVESTMENTS CO193,134$4.22M<0.01%-24,46613F-HRTimelineGroup
NOMURA ASSET MANAGEMENT INTERNATIONAL I…in group NOMURA ASSET MANAGEMENT CO LTD180,000$3.94M0.01%013F-HRTimelineGroup
Swiss National Bank168,100$3.67M<0.01%+6,70013F-HRTimeline
Atom Investors LP162,524$3.55M0.32%+6,55913F-HRTimeline
SummitTX Capital, L.P.140,797$3.08M0.08%+74,45713F-HRTimeline
Invesco Ltd.in group Invesco Ltd.138,060$3.02M<0.01%-114,70113F-HRTimelineGroup
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…135,012$2.95M<0.01%+33,52013F-HRTimelineGroup
Torray Investment Partners LLC133,835$2.93M0.39%+28,96713F-HRTimeline
RHUMBLINE ADVISERS132,358$2.89M<0.01%+17,59613F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN130,054$2.84M<0.01%+49,66013F-HRTimelineGroup
PRICE T ROWE ASSOCIATES INC /MD/128,199$2.8M<0.01%+21,06613F-HRTimeline
Pale Fire Capital SEin group Pale Fire Capital125,550$2.74M0.2%-158,91013F-HRTimelineGroup
CAPITAL FUND MANAGEMENT S.A.125,091$2.73M0.02%-20,47513F-HRTimeline
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…124,241$2.72M<0.01%+65513F-HRTimelineGroup
PFM Health Sciences, LP118,422$2.59M0.22%-126,59913F-HRTimeline
SCHRODER INVESTMENT MANAGEMENT GROUP115,208$2.51M<0.01%new13F-HRTimeline
ALLIANCEBERNSTEIN L.P.106,040$2.48M<0.01%-182,52713F-HRTimeline
Rafferty Asset Management, LLC97,787$2.14M<0.01%-26,93613F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\95,315$2.08M<0.01%+20,33213F-HRTimelineGroup
CALIFORNIA STATE TEACHERS RETIREMENT SY…93,481$2.04M<0.01%-9,52813F-HR/ATimeline
HUSSMAN STRATEGIC ADVISORS, INC.84,000$1.84M0.42%new13F-HRTimeline
Aquatic Capital Management LLC78,922$1.73M0.06%+9,83913F-HRTimeline
WINTON GROUP Ltdin group WINTON GROUP Ltd76,500$1.67M0.05%+66,20013F-HRTimelineGroup
Seven Fleet Capital Management LP77,930$1.65M0.27%new13F-HRTimeline
Tidal Investments LLCin group Tidal Investments LLC72,212$1.58M<0.01%+6,88613F-HRTimelineGroup
Tema ETFs LLC72,212$1.58M0.05%+13,86413F-HRTimeline
1492 Capital Management LLC66,997$1.46M0.43%new13F-HRTimeline
Legal & General Group Plcin group Legal & General Group Plc65,483$1.43M<0.01%+6,42513F-HRTimelineGroup
Virtus Investment Advisers, LLCin group Virtus Investment Advisers, L…63,720$1.39M0.32%+22,27513F-HRTimelineGroup
GSA CAPITAL PARTNERS LLP62,775$1.37M0.09%+14,22113F-HRTimeline
Pavaki Capital Management LLC60,000$1.31M0.75%013F-HRTimeline
XTX Topco Ltdin group XTX Topco Ltd59,164$1.29M0.02%-19,84313F-HRTimelineGroup
Mirae Asset Global Investments Co., Ltd.group of 2 filers holding56,323$1.23M+2,496Timeline
Headlands Technologies LLC56,227$1.23M0.13%+30,83513F-HRTimeline
IEQ CAPITAL, LLC54,835$1.2M0.01%-54,78813F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…51,930$1.14M0.01%+5,09213F-HRTimelineGroup
PROFUND ADVISORS LLC49,412$1.08M0.03%-6,49213F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC48,695$1.06M<0.01%-1,62813F-HRTimelineGroup
STATE OF WISCONSIN INVESTMENT BOARD45,209$988K<0.01%-63713F-HRTimeline
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …44,305$969K<0.01%+4,40113F-HRTimelineGroup
STIFEL FINANCIAL CORPin group STIFEL FINANCIAL CORP43,714$956K<0.01%+2,00013F-HRTimelineGroup
Assenagon Asset Management S.A.41,737$912K<0.01%013F-HR/ATimeline
Connor, Clark & Lunn Investment Managem…40,891$894K<0.01%new13F-HRTimeline
HighTower Advisors, LLC39,355$860K<0.01%+2,32413F-HRTimeline
Jupiter Topco LLCin group Janus Henderson39,335$860K<0.01%13F-HRTimelineGroup
Mariner, LLCin group Mariner, LLC38,128$833K<0.01%-35,07113F-HRTimelineGroup
VICTORY CAPITAL MANAGEMENT INC37,928$829K<0.01%-40313F-HRTimeline
Palumbo Wealth Management LLC37,631$823K0.17%+44813F-HRTimeline
WESBANCO BANK INC37,000$809K0.02%013F-HRTimeline
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC36,874$806K<0.01%-16,20313F-HRTimelineGroup
Cetera Investment Advisers36,443$797K<0.01%+13,68413F-HRTimeline
Zurcher Kantonalbank (Zurich Cantonalba…36,151$790K<0.01%+11,41213F-HRTimeline
Lion Point Capital, LP36,000$787K3.76%013F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS32,601$713K<0.01%-7,78013F-HRTimelineGroup
DIVERSIFIED TRUST CO32,420$709K0.01%+18,76013F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND31,284$684K<0.01%+5,90013F-HRTimeline
SG Americas Securities, LLC31,254$683K<0.01%-7,29413F-HRTimeline
Inspire Investing, LLCin group Inspire Investing, LLC30,965$677K0.03%+8,93413F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA30,555$667K<0.01%+7,17413F-HRTimelineGroup
Quantinno Capital Management LP30,440$665K<0.01%+7,86413F-HRTimeline
TWINBEECH CAPITAL LP28,077$614K0.11%-61,92913F-HRTimeline
State of New Jersey Common Pension Fund…in group State of New Jersey Common Pe…27,093$592K<0.01%-87513F-HRTimelineGroup
Entropy Technologies, LP26,453$578K0.02%new13F-HRTimeline
Police & Firemen's Retirement System of…26,262$574K<0.01%+2,89113F-HRTimeline
Marex Group Ltdin group Marex Group Ltd25,260$552K<0.01%+5,20013F-HRTimelineGroup
Magnetar Financial LLCin group Magnetar Financial LLC24,891$544K<0.01%+14,10013F-HRTimelineGroup
INTECH INVESTMENT MANAGEMENT LLC24,760$541K<0.01%-5,54013F-HRTimeline
LOS ANGELES CAPITAL MANAGEMENT LLC23,850$521K<0.01%-4,68813F-HRTimeline
Creative Planningin group Creative Planning23,415$512K<0.01%-8,48713F-HRTimelineGroup
ARIZONA STATE RETIREMENT SYSTEM23,120$505K<0.01%+64213F-HRTimeline
INCEPTIONR LLC22,691$496K0.12%new13F-HRTimeline
DNB Asset Management ASin group DNB Asset Management AS22,514$492K<0.01%+5,86213F-HRTimelineGroup
Harbour Capital Advisors, LLC20,650$488K0.09%+7,00013F-HRTimeline
WEALTH ENHANCEMENT ADVISORY SERVICES, L…19,950$471K<0.01%-2,59513F-HRTimeline
Engineers Gate Manager LP21,401$468K0.01%-17,00713F-HRTimeline
VIRGINIA RETIREMENT SYSTEMS ET Al21,000$459K<0.01%new13F-HRTimeline
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC20,539$457K<0.01%-2,92213F-HRTimelineGroup
PSP Research LLC20,000$437K0.23%013F-HRTimeline
Graham Capital Management, L.P.19,615$429K0.01%new13F-HRTimeline
Allspring Global Investments Holdings, …in group Allspring Global Investments …20,166$421K<0.01%+60213F-HRTimelineGroup
STATE BOARD OF ADMINISTRATION OF FLORID…18,968$415K<0.01%013F-HRTimeline
MERCER GLOBAL ADVISORS INC /ADV18,490$404K<0.01%-5,14713F-HR/ATimeline
Cerity Partners LLCin group Cerity Partners LLC17,623$385K<0.01%-21,46013F-HRTimelineGroup
KLP KAPITALFORVALTNING AS17,600$385K<0.01%013F-HRTimeline
GUGGENHEIM CAPITAL LLCin group GUGGENHEIM CAPITAL LLC15,785$345K<0.01%-27113F-HRTimelineGroup
SECTORAL ASSET MANAGEMENT INC15,680$343K0.24%-16,00013F-HRTimeline
PRUDENTIAL FINANCIAL INCin group PRUDENTIAL FINANCIAL INC14,680$321K<0.01%+1,27013F-HRTimelineGroup
ProShare Advisors LLC14,564$318K<0.01%-1,85813F-HRTimeline
China Universal Asset Management Co., L…14,102$308K0.02%-1,55013F-HRTimeline
E Fund Management Co., Ltd.13,788$301K0.01%-1,89013F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION…13,746$300K<0.01%013F-HRTimeline
VARCOV Co.12,972$284K0.11%new13F-HRTimeline
Arrowpoint Investment Partners (Singapo…in group Arrowpoint Investment Partner…12,755$279K0.08%new13F-HRTimelineGroup
WEDBUSH SECURITIES INC12,705$278K0.01%+3,65113F-HRTimeline
Post Resch Tallon Group Inc.12,500$273K0.19%013F-HRTimeline
LETKO, BROSSEAU & ASSOCIATES INC12,450$272K<0.01%new13F-HRTimeline
BANK OF MONTREAL /CAN/in group BANK OF MONTREAL /CAN/12,138$265K<0.01%-3,10413F-HRTimelineGroup
Velan Capital Investment Management LP10,000$219K0.13%013F-HRTimeline
TEACHER RETIREMENT SYSTEM OF TEXAS9,743$213K<0.01%-79713F-HRTimeline
Pallas Capital Advisors LLC9,460$207K0.01%-25613F-HRTimeline
Bridgefront Capital, LLC9,386$205K0.05%-21,71513F-HRTimeline
Ameritas Investment Partners, Inc.group of 2 filers holding8,085$177K+966Timeline
CANADA LIFE ASSURANCE Coin group CANADA LIFE ASSURANCE Co7,182$157K<0.01%013F-HRTimelineGroup
Arax Advisory Partners6,812$149K<0.01%+6,22713F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…5,743$126K<0.01%-8,68913F-HRTimelineGroup
Walleye Capital LLCgroup of 2 filers holding5,636$123K-379,753Timeline
FMR LLCin group FMR LLC5,574$122K<0.01%-168,41913F-HRTimelineGroup
GROUP ONE TRADING LLC4,861$106K<0.01%new13F-HRTimeline
US BANCORP \DE\in group US BANCORP \DE\4,544$99.3K<0.01%-2913F-HRTimelineGroup
Cape Investment Advisory, Inc.3,709$81.1K0.02%new13F-HRTimeline
Integrated Wealth Concepts LLC3,351$73.3K<0.01%new13F-HRTimeline
Nykredit A/Sin group Nykredit A/S3,279$71.7K<0.01%13F-HRTimelineGroup
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…3,209$70.1K<0.01%013F-HRTimelineGroup
Bayforest Capital Ltd3,153$68.9K0.06%new13F-HRTimeline
KBC Group NVin group KBC Group NV3,062$67K<0.01%013F-HRTimelineGroup
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.2,992$65.4K<0.01%+73213F-HRTimelineGroup
SIMPLEX TRADING, LLC2,991$65.4K<0.01%-17,83413F-HRTimeline
Smartleaf Asset Management LLC2,579$56.2K<0.01%013F-HRTimeline
Larson Financial Group LLC2,313$50.6K<0.01%-28113F-HRTimeline
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP2,300$49K<0.01%+1,71113F-HRTimelineGroup
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…2,085$45.6K<0.01%-113F-HRTimelineGroup
GF FUND MANAGEMENT CO. LTD.1,868$40.8K<0.01%-8413F-HRTimeline
Pacer Advisors, Inc.1,633$36K<0.01%new13F-HRTimeline
Allworth Financial LP1,169$25.6K<0.01%-51713F-HRTimeline
Steward Partners Investment Advisory, L…931$20.4K<0.01%+60013F-HRTimeline