Who owns SenesTech (SNES)
Which tracked institutional funds hold SNES, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See SNES company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
Conviction spread
SNES’s largest tracked holder by dollar value, SABBY MANAGEMENT, LLC, sizes it at 1.8% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 1.8pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in SNES divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, across 17 tracked filers holding SNES, 5 increased or opened the position and 11 reduced or closed it; over the same quarter, open-market insider Form 4s were net purchases.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| SABBY MANAGEMENT, LLC trimmed | 141,756 | $211K | 16.3% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 82,616 | $123K | 9.5% | 2026-Q2 |
| CITADEL ADVISORS LLC added | 46,671 | $70K | 5.4% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC trimmed | 44,339 | $66K | 5.1% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC trimmed | 34,762 | $52K | 4.0% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO trimmed | 26,594 | $40K | 3.1% | 2026-Q2 |
| ESSEX INVESTMENT MANAGEMENT CO LLC trimmed | 26,203 | $39K | 3.0% | 2026-Q2 |
| NORTHERN TRUST CORP new | 17,587 | $26K | 2.0% | 2026-Q2 |
| DIVERSIFY WEALTH MANAGEMENT, LLC | 19,119 | $25K | 2.0% | 2026-Q2 |
| Diversify Advisory Services, LLC added | 19,119 | $25K | 2.0% | 2026-Q2 |
| STATE STREET CORP | 16,662 | $25K | 1.9% | 2026-Q2 |
| XTX Topco Ltd trimmed | 10,308 | $15K | 1.2% | 2026-Q2 |
| MORGAN STANLEY | 3,400 | $5K | 0.4% | 2026-Q2 |
| UBS Group AG trimmed | 1,307 | $2K | 0.2% | 2026-Q2 |
| OSAIC HOLDINGS, INC. trimmed | 1,000 | $1K | 0.1% | 2026-Q2 |
| BARCLAYS PLC new | 106 | $158 | 0.0% | 2026-Q2 |
| Caitong International Asset Management Co., Ltd new | 13 | $19 | 0.0% | 2026-Q2 |
| JANE STREET GROUP, LLC added | 16,666 | $27K | 2.1% | 2026-Q1 stale (1 quarter behind) |
| TWO SIGMA SECURITIES, LLC new | 10,894 | $18K | 1.4% | 2026-Q1 stale (1 quarter behind) |
| DRW Securities, LLC added | 82,107 | $176K | 13.5% | 2025-Q4 stale (2 quarters behind) |
| VANGUARD GROUP INC added | 68,356 | $146K | 11.3% | 2025-Q4 stale (2 quarters behind) |
| CORSAIR CAPITAL MANAGEMENT, L.P. trimmed | 38,166 | $82K | 6.3% | 2025-Q4 stale (2 quarters behind) |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP new | 22,461 | $48K | 3.7% | 2025-Q4 stale (2 quarters behind) |
| MILLENNIUM MANAGEMENT LLC trimmed | 13,564 | $29K | 2.2% | 2025-Q4 stale (2 quarters behind) |
| Tower Research Capital LLC (TRC) trimmed | 765 | $2K | 0.1% | 2025-Q4 stale (2 quarters behind) |
| BANK OF AMERICA CORP /DE/ added | 47 | $100 | 0.0% | 2025-Q4 stale (2 quarters behind) |
| CITIGROUP INC trimmed | 1 | $2 | 0.0% | 2025-Q4 stale (2 quarters behind) |
| WELLS FARGO & COMPANY/MN new | 10,000 | $44K | 3.4% | 2025-Q3 stale (3 quarters behind) |
| SBI Securities Co., Ltd. new | 2 | $9 | 0.0% | 2025-Q3 stale (3 quarters behind) |
| RAYMOND JAMES FINANCIAL INC new | 8 | $41 | 0.0% | 2025-Q2 stale (4 quarters behind) |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 0 | — | 0.0% | 2025-Q2 stale (4 quarters behind) |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.