Latest Period
Q1 2026
Security Snapshot
Syndax Pharmaceuticals Inc - Common Stock, par value $0.0001 per share (SNDX) Institutional Ownership
CUSIP: 87164F105
13F Institutional Holders and Ownership History from Q1 2016 to Q1 2026
Institutions Reporting
244
Shares (Excl. Options)
99,364,328
Price
$23.36
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- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 99,364,328
- Total reported value
- $2,320,325,100
- Portfolio coverage rank
- 0.01%
- Share change
- -613,200
- Value change
- -$8,246,195
- Number of holders
- 244
- Security type / class
- Equity / Common Stock, par value $0.0001 per share
- Symbol
- SNDX on Nasdaq
- Shares outstanding
- 86,328,130
- Reported price per share
- $21.43
- Price from insider filings
- $21.43
Latest holder snapshot
7 facts
Security identity
2 facts
Issuer context
3 facts
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors
Key facts
- SNDX - Syndax Pharmaceuticals Inc - Common Stock, par value $0.0001 per share is tracked under CUSIP 87164F105.
- 244 institutions reported positions in Q1 2026.
- 8 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 227 to 244 between Q4 2025 and Q1 2026.
- Reported value moved from $2,098,468,154 to $2,320,325,100.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC Evidence
Latest holder context comes from 244 institutions filings for Q1 2026.
Security key
87164F105
Latest holder period
Q1 2026
13F holders
244
13D/G owners
8
CIK / CUSIP context first
Open Q1 2026 holders
SNDX full holder history
Syndax Pharmaceuticals Inc SEC filings
Syndax Pharmaceuticals Inc company facts
Syndax Pharmaceuticals Inc insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 87164F105:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
8
Security
SNDX
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| Kynam Capital Management, LP | 10% | $113,571,600 | 8,520,000 | Kynam Capital Management, LP | 31 Dec 2024 | |||
| BlackRock, Inc. | 7.8% | $89,898,173 | 6,744,049 | BlackRock, Inc. | 31 Mar 2025 | |||
| GOLDMAN SACHS GROUP INC | 6.5% | +26% | $51,576,091 | +$9,897,509 | 5,581,828 | +24% | THE GOLDMAN SACHS GROUP, INC. | 30 Jun 2025 |
| STATE STREET CORP | 5.3% | $96,527,592 | 4,596,552 | STATE STREET CORPORATION | 31 Dec 2025 | |||
| VANGUARD CAPITAL MANAGEMENT LLC | 5% | $104,118,860 | 4,457,143 | Vanguard Capital Management | 31 Mar 2026 | |||
| MORGAN STANLEY | 2.4% | -65% | $27,193,373 | -$44,284,339 | 2,040,013 | -62% | Morgan Stanley | 31 Mar 2025 |
| Point72 Asset Management, L.P. | 2.3% | -54% | $46,382,378 | -$54,718,581 | 1,985,547 | -54% | Point72 Asset Management, L.P. | 31 Mar 2026 |
| WELLINGTON MANAGEMENT GROUP LLP | 0% | $475,628 | 35,681 | Wellington Management Group LLP | 28 Feb 2025 |
As of 31 Mar 2026, 244 institutional investors reported holding 99,364,328 shares of Syndax Pharmaceuticals Inc - Common Stock, par value $0.0001 per share (SNDX). This represents 115% of the company’s total 86,328,130 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
81%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 9.6% | 8,254,426 | +0.19% | 0% | $192,823,390 |
| Kynam Capital Management, LP | 9.3% | 8,050,959 | 0% | 12% | $188,070,402 |
| GOLDMAN SACHS GROUP INC | 5.8% | 4,996,787 | -12% | 0.02% | $116,724,944 |
| STATE STREET CORP | 5.1% | 4,430,076 | -3.6% | 0% | $103,486,575 |
| BANK OF AMERICA CORP /DE/ | 4.9% | 4,249,836 | -9.8% | 0.01% | $99,276,168 |
| VANGUARD CAPITAL MANAGEMENT LLC | 4.4% | 3,822,579 | 0% | 0% | $89,295,445 |
| DEERFIELD MANAGEMENT COMPANY, L.P. | 4.4% | 3,779,900 | 1% | $88,298,464 | |
| Eversept Partners, LP | 3.3% | 2,885,622 | -13% | 4.4% | $67,408,130 |
| KINGDON CAPITAL MANAGEMENT, L.L.C. | 2.9% | 2,500,000 | +6.4% | 9.8% | $58,400,000 |
| Hood River Capital Management LLC | 2.7% | 2,354,285 | +1.6% | 0.55% | $54,996,098 |
| GEODE CAPITAL MANAGEMENT, LLC | 2.5% | 2,157,058 | +3.2% | 0% | $50,399,089 |
| FRANKLIN RESOURCES INC | 2.5% | 2,150,079 | -11% | 0.01% | $50,225,842 |
| Point72 Asset Management, L.P. | 2.3% | 1,985,547 | -59% | 0.08% | $46,382,378 |
| Elmind Capital, LP | 2.1% | 1,855,000 | 0% | 12% | $43,332,800 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 2% | 1,737,141 | 0% | 0% | $40,579,614 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 2% | 1,732,541 | +26% | 0.05% | $40,472,158 |
| Soleus Capital Management, L.P. | 2% | 1,726,908 | -23% | 1.6% | $40,340,571 |
| D. E. Shaw & Co., Inc. | 1.9% | 1,601,896 | +31% | 0.03% | $37,420,290 |
| TWO SIGMA INVESTMENTS, LP | 1.8% | 1,579,596 | +38% | 0.03% | $36,899,363 |
| Nuveen, LLC | 1.7% | 1,494,645 | +0.79% | 0.01% | $34,914,908 |
| MPM BIOIMPACT LLC | 1.6% | 1,340,733 | +0.23% | 2.4% | $31,319,523 |
| Aisling Capital Management LP | 1.5% | 1,316,806 | 0% | 6.5% | $30,760,588 |
| Woodline Partners LP | 1.4% | 1,250,760 | +0.01% | 0.11% | $29,217,754 |
| STEMPOINT CAPITAL LP | 1.4% | 1,215,743 | -9.2% | 5.5% | $28,399,756 |
| UBS Group AG | 1.3% | 1,153,662 | +61% | 0% | $26,949,545 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
41
Latest
Q1 2026
Rows shown
1-25 of 41
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 99,364,328 | $2,320,325,100 | -$8,246,195 | $23.36 | 244 |
| 2025 Q4 | 99,897,685 | $2,098,468,154 | -$24,363,545 | $21.01 | 227 |
| 2025 Q3 | 101,125,579 | $1,555,833,342 | +$19,170,271 | $15.38 | 226 |
| 2025 Q2 | 101,743,087 | $952,765,629 | -$3,412,831 | $9.36 | 214 |
| 2025 Q1 | 100,841,762 | $1,238,937,353 | +$32,280,128 | $12.28 | 215 |
| 2024 Q4 | 98,036,463 | $1,295,985,057 | +$87,204,107 | $13.22 | 214 |
| 2024 Q3 | 88,967,889 | $1,713,503,490 | +$22,962,287 | $19.25 | 208 |
| 2024 Q2 | 87,359,094 | $1,793,463,324 | -$71,085,162 | $20.53 | 195 |
| 2024 Q1 | 90,291,619 | $2,148,803,982 | +$45,990,918 | $23.80 | 188 |
| 2023 Q4 | 88,660,945 | $1,915,962,261 | +$405,830,138 | $21.61 | 176 |
| 2023 Q3 | 71,017,590 | $1,031,468,287 | -$1,236,482 | $14.52 | 174 |
| 2023 Q2 | 70,660,286 | $1,478,899,897 | -$48,383,346 | $20.93 | 165 |
| 2023 Q1 | 72,989,203 | $1,541,067,785 | +$23,662,697 | $21.12 | 161 |
| 2022 Q4 | 71,468,832 | $1,818,847,118 | +$262,720,878 | $25.45 | 159 |
| 2022 Q3 | 59,986,014 | $1,441,473,166 | +$97,845,580 | $24.03 | 136 |
| 2022 Q2 | 55,225,664 | $1,062,543,225 | +$21,478,133 | $19.24 | 116 |
| 2022 Q1 | 54,572,890 | $948,388,792 | -$36,428,045 | $17.38 | 136 |
| 2021 Q4 | 52,428,774 | $1,146,955,026 | +$54,297,905 | $21.89 | 129 |
| 2021 Q3 | 49,078,197 | $938,007,416 | -$20,732,602 | $19.11 | 121 |
| 2021 Q2 | 50,204,902 | $861,938,071 | +$12,311,173 | $17.17 | 113 |
| 2021 Q1 | 48,482,656 | $1,083,969,550 | +$46,478,159 | $22.36 | 130 |
| 2020 Q4 | 46,493,166 | $1,034,139,433 | +$269,937,051 | $22.24 | 140 |
| 2020 Q3 | 34,234,622 | $505,296,990 | +$23,535,263 | $14.76 | 98 |
| 2020 Q2 | 32,648,161 | $483,839,331 | +$177,178,450 | $14.82 | 96 |
| 2020 Q1 | 20,764,120 | $227,777,510 | +$45,430,574 | $10.97 | 81 |