TNON Tenon Medical Inc
Tenon Medical Inc (TNON) Institutional Ownership
What the institutions did with TNON last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| Warberg Asset Management LLC | 430.4K | 44.4% |
| ARMISTICE CAPITAL, LLC | 172.1K | 17.8% |
| HRT FINANCIAL LP | 84.6K | 8.7% |
| GEODE CAPITAL MANAGEMENT, LLC | 80.6K | 8.3% |
| VANGUARD CAPITAL MANAGEMENT LLC | 71.7K | 7.4% |
| VANGUARD FIDUCIARY TRUST CO | 44.6K | 4.6% |
| SBI Securities Co., Ltd. | 39.7K | 4.1% |
| NORTHERN TRUST CORP | 31.0K | 3.2% |
| Spectrum Asset Management, Inc. (NB/CA) | 10.7K | 1.1% |
| CITIGROUP INC | 1.7K | 0.2% |
| Tower Research Capital LLC (TRC) | 915 | 0.1% |
| ACTION POINT FINANCIAL PLANNING, LLC | 190 | 0.0% |
| MORGAN STANLEY | 188 | 0.0% |
| Clear Street Group Inc. | 100 | 0.0% |
| BNP PARIBAS FINANCIAL MARKETS | 24 | 0.0% |
| Allworth Financial LP | 20 | 0.0% |
| UBS Group AG | 4 | 0.0% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| Warberg Asset Management LLC | New | 0 | 430.4K | +430.4K |
| ARMISTICE CAPITAL, LLC | New | 0 | 172.1K | +172.1K |
| GEODE CAPITAL MANAGEMENT, LLC | Reduced | 167.5K | 80.6K | -86.9K |
| HRT FINANCIAL LP | New | 0 | 84.6K | +84.6K |
| NORTHERN TRUST CORP | Increased | 18.0K | 31.0K | +13.0K |
| CITIGROUP INC | Reduced | 9.9K | 1.7K | -8.1K |
| UBS Group AG | Reduced | 4.2K | 4 | -4.2K |
| ACTION POINT FINANCIAL PLANNING, LLC | New | 0 | 190 | +190 |
| Clear Street Group Inc. | New | 0 | 100 | +100 |
| SBI Securities Co., Ltd. | Increased | 39.7K | 39.7K | +3 |
| Tower Research Capital LLC (TRC) | Reduced | 916 | 915 | -1 |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.