Syndax Pharmaceuticals (SNDX) Held by Superinvestors
SYNDAX PHARMACEUTICALS INC (SNDX) is currently held by 2 superinvestors tracked by InsiderSet, with a combined reported market value of approximately $9.96M based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Renaissance Technologies LLC is currently the largest disclosed institutional shareholder of SNDX tracked by InsiderSet, reporting ownership valued at approximately $7.03M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $5.46M, representing an estimated loss of -22.28% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 100% of the total disclosed SNDX value among the investors covered in this analysis. Major shareholders include Renaissance Technologies LLC, Torray Fund, and several other long-term asset managers with concentrated positions in SYNDAX PHARMACEUTICALS INC (SNDX).
This page ranks the largest institutional SNDX shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Renaissance Technologies LLC | Jim Simons | 0.01% | 321,600 | $7,030,176 | $5,463,984 | -$1,566,192 | -22.28% |
| Torray Fund | Robert Torray | 0.39% | 133,835 | $2,925,633 | $2,273,857 | -$651,776 | -22.28% |
Frequently asked questions about SNDX
Who are the largest superinvestors holding SNDX?
The largest superinvestors holding SNDX in the latest SEC Form 13F filings include Renaissance Technologies LLC and Torray Fund. InsiderSet ranks these superinvestors by their latest reported SNDX position.
What does the SNDX superinvestors page include?
This page tracks SNDX positions reported by a curated group of notable institutional investors and fund managers through SEC Form 13F. SYNDAX PHARMACEUTICALS INC (SNDX) on this page reflects disclosed 13F holdings among those superinvestors, not every institutional shareholder of the stock.
How many superinvestors hold SNDX?
InsiderSet currently tracks 2 superinvestors reporting SNDX holdings in the latest available 13F data. This is the curated set on this page, not the total number of institutions that own SNDX.
How much SNDX stock do superinvestors hold?
Superinvestors tracked by InsiderSet disclosed approximately $9.96M in SNDX holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value, and it covers the curated superinvestors on this page rather than every institutional filer.
When were SNDX superinvestor holdings last updated?
The latest SNDX superinvestor holdings on InsiderSet are based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time holdings.
Are superinvestor SNDX holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by these superinvestors as of the end of the reporting quarter. A superinvestor may have changed its SNDX position after the reporting date.
Are superinvestors buying or selling SNDX?
Buying and selling can be analyzed by comparing SNDX positions across consecutive 13F reporting periods. InsiderSet's SNDX Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View SNDX ownership changes.
How have superinvestor SNDX holdings changed over time?
InsiderSet tracks SNDX holdings among these superinvestors across multiple 13F reporting periods, so holder counts, reported value, and reported shares can be compared over time.