Syndax Pharmaceuticals, Inc.
US ˙ NasdaqGS ˙ US87164F1057

SecuritySNDX / Syndax Pharmaceuticals, Inc.
InstitutionDimensional Fund Advisors Lp
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Dimensional Fund Advisors Lp closes position in SNDX / Syndax Pharmaceuticals, Inc.

On May 7, 2026 - Dimensional Fund Advisors Lp filed a 13F-HR form disclosing ownership of 0 shares of Syndax Pharmaceuticals, Inc. (US:SNDX) valued at $0 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 28,312 shares of Syndax Pharmaceuticals, Inc.. The current value of the position is $0 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-07 2026-03-31 13F SYNDAX PHARMACEUTICALS COM 87164F105 0 -100.00 0
2026-02-12 2025-12-31 13F SYNDAX PHARMACEUTICALS COM 87164F105 28,312 -93,155 -76.69 595 -68.20 0.0001
2025-11-12 2025-09-30 13F SYNDAX PHARMACEUTICALS COM 87164F105 121,467 -366,180 -75.09 1,869 -59.09 0.0004
2025-08-12 2025-06-30 13F SYNDAX PHARMACEUTICALS COM 87164F105 487,647 21,765 4.67 4,566 -20.23 0.0011
2025-05-13 2025-03-31 13F SYNDAX PHARMACEUTICALS COM 87164F105 465,882 134,582 40.62 5,725 30.74 0.0014
2025-02-13 2024-12-31 13F SYNDAX PHARMACEUTICALS COM 87164F105 331,300 283,577 594.21 4,378 376.91 0.0011
2024-11-07 2024-09-30 13F SYNDAX PHARMACEUTICALS COM 87164F105 47,723 -22,458 -32.00 919 -36.25 0.0002
2024-08-09 2024-06-30 13F SYNDAX PHARMACEUTICALS COM 87164F105 70,181 -38,464 -35.40 1,441 -44.29 0.0004
2024-05-10 2024-03-31 13F SYNDAX PHARMACEUTICALS COM 87164F105 108,645 -658 -0.60 2,586 9.44 0.0007
2024-02-07 2023-12-31 13F SYNDAX PHARMACEUTICALS COM 87164F105 109,303 3,163 2.98 2,362 53.28 0.0007
2023-11-09 2023-09-30 13F SYNDAX PHARMACEUTICALS COM 87164F105 106,140 -488,322 -82.15 1,541 -87.61 0.0005
2023-08-09 2023-06-30 13F SYNDAX PHARMACEUTICALS COM 87164F105 594,462 -725,763 -54.97 12,442 -55.38 0.0040
2023-05-12 2023-03-31 13F SYNDAX PHARMACEUTICALS COM 87164F105 1,320,225 54,096 4.27 27,882 87,031.25 0.0094
2023-02-09 2022-12-31 13F SYNDAX PHARMACEUTICALS COM 87164F105 1,266,129 143,677 12.80 32 -99.88 0.0095
2022-11-10 2022-09-30 13F SYNDAX PHARMACEUTICALS COM 87164F105 1,122,452 161,346 16.79 26,974 45.88 0.0104
2022-08-12 2022-06-30 13F SYNDAX PHARMACEUTICALS COM 87164F105 961,106 76,772 8.68 18,490 20.30 0.0066
2022-05-13 2022-03-31 13F SYNDAX PHARMACEUTICALS COM 87164F105 884,334 90,634 11.42 15,370 -11.53 0.0047
2022-02-09 2021-12-31 13F SYNDAX PHARMACEUTICALS COM 87164F105 793,700 145,674 22.48 17,374 40.29 0.0053
2021-11-12 2021-09-30 13F SYNDAX PHARMACEUTICALS COM 87164F105 648,026 146,228 29.14 12,384 43.73 0.0040
2021-08-12 2021-06-30 13F SYNDAX PHARMACEUTICALS COM 87164F105 501,798 -207,841 -29.29 8,616 -45.60 0.0027
2021-05-14 2021-03-31 13F SYNDAX PHARMACEUTICALS COM 87164F105 709,639 -66,069 -8.52 15,837 -8.21 0.0052
2021-03-08 2020-12-31 13F/A-2 SYNDAX PHARMACEUTICALS COM 87164F105 775,708 -78,260 -9.16 17,253 36.90 0.0062
2021-02-11 2020-12-31 13F SYNDAX PHARMACEUTICALS COM 87164F105 775,708 -78,260 17,253 6,230.8666
2020-11-12 2020-09-30 13F SYNDAX PHARMACEUTICALS COM 87164F105 853,968 -29,268 -3.31 12,603 -3.71 0.0053
2020-08-13 2020-06-30 13F SYNDAX PHARMACEUTICALS COM 87164F105 883,236 -5,280 -0.59 13,089 34.30 0.0058
2020-05-14 2020-03-31 13F SYNDAX PHARMACEUTICALS COM 87164F105 888,516 -49,445 -5.27 9,746 18.35 0.0051
2020-02-14 2019-12-31 13F SYNDAX PHARMACEUTICALS COM 87164F105 937,961 -18,979 -1.98 8,235 15.19 0.0030
2019-11-12 2019-09-30 13F SYNDAX PHARMACEUTICALS COM 87164F105 956,940 12,490 1.32 7,149 -18.69 0.0028
2019-08-13 2019-06-30 13F SYNDAX PHARMACEUTICALS COM 87164F105 944,450 36,597 4.03 8,792 84.47 0.0034
2019-08-12 2019-03-31 13F/A-2 SYNDAX PHARMACEUTICALS COM 87164F105 907,853 97,669 12.06 4,766 32.21 0.0019
2019-05-10 2019-03-31 13F SYNDAX PHARMACEUTICALS COM 87164F105 907,853 97,669 4,766
2019-02-26 2018-12-31 13F/A-1 SYNDAX PHARMACEUTICALS COM 87164F105 810,184 14,417 1.81 3,605 -43.92 0.0016
2019-02-13 2018-12-31 13F SYNDAX PHARMACEUTICALS COM 87164F105 810,184 14,417 3,605
2018-11-13 2018-09-30 13F SYNDAX PHARMACEUTICALS COM 87164F105 795,767 237,042 42.43 6,428 63.90 0.0024
2018-08-10 2018-06-30 13F SYNDAX PHARMACEUTICALS COM 87164F105 558,725 161,146 40.53 3,922 -30.68 0.0016
2018-05-11 2018-03-31 13F SYNDAX PHARMACEUTICALS COM 87164F105 397,579 173,821 77.68 5,658 188.67 0.0024
2018-02-12 2017-12-31 13F SYNDAX PHARMACEUTICALS COM 87164F105 223,758 168,478 304.77 1,960 202.94 0.0008
2017-11-13 2017-09-30 13F SYNDAX PHARMACEUTICALS COM 87164F105 55,280 41,537 302.24 647 236.98 0.0003
2017-08-11 2017-06-30 13F SYNDAX PHARMACEUTICALS COM 87164F105 13,743 13,743 192 0.0001
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.