Tenax Therapeutics, Inc. (TENX) Ownership
TENX ownership summary
as of October 18, 2026- Institutions
- 113.0% of shares outstanding
- Insiders
- 0.18% of shares outstanding
- Shares outstanding
- 37.4M
- Float
- 30.8M shares available to trade
- Short interest
- 19.35% 7.2M shares short
- Days to cover
- 1.49 short interest up 30.5% vs prior month
- Institutions 113.00%
- Insiders 0.18%
TENX top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | FMR Inc | 10.53% | 3.9M | $5.4M | +3.6M (+1,122.1%) | June 30, 2026 |
| 2 | Vivo Capital, LLC | 6.68% | 2.5M | $3.4M | +2.3M (+1,100.0%) | June 30, 2026 |
| 3 | HHG PLC | 4.85% | 1.8M | $2.5M | +1.6M (+989.3%) | March 31, 2026 |
| 4 | BlackRock Inc | 4.62% | 1.7M | $2.4M | +1.7M (+10,078.4%) | June 30, 2026 |
| 5 | Perceptive Advisors LLC | 4.54% | 1.7M | $2.3M | +252,218 (+17.4%) | June 30, 2026 |
| 6 | Vanguard Capital Management, LLC | 3.07% | 1.1M | $1.6M | +883,700 (+335.5%) | June 30, 2026 |
| 7 | Millennium Management LLC | 2.34% | 876K | $1.2M | +342,341 (+64.1%) | June 30, 2026 |
| 8 | Ikarian Capital, LLC | 2.10% | 788K | $1.1M | −230,000 (−22.6%) | June 30, 2026 |
| 9 | Candriam Luxembourg S.C.A. | 2.00% | 750K | $1.0M | +749,588 (0.0%) | June 30, 2026 |
| 10 | Citadel Advisors Llc | 1.95% | 729K | $990,843 | +576,045 (+377.7%) | June 30, 2026 |
| 11 | RTW INVESTMENTS, LLC | 1.86% | 697K | $947,335 | +326,324 (+88.1%) | June 30, 2026 |
| 12 | Stonepine Capital Management Llc | 1.76% | 660K | $897,600 | −315,200 (−32.3%) | June 30, 2026 |
| 13 | Geode Capital Management, LLC | 1.71% | 640K | $869,770 | +570,377 (+824.7%) | June 30, 2026 |
| 14 | T. Rowe Price Associates, Inc. | 1.62% | 608K | $826,418 | −2.3M (−79.4%) | June 30, 2026 |
| 15 | Marshall Wace Asset Management Ltd | 1.56% | 586K | $796,386 | +233,006 (+66.1%) | June 30, 2026 |
| 16 | BRAIDWELL LP | 1.56% | 584K | $794,800 | +584,412 (0.0%) | June 30, 2026 |
| 17 | Point72 Asset Management, L.P. | 1.49% | 557K | $757,195 | +22,796 (+4.3%) | June 30, 2026 |
| 18 | Velan Capital Investment Management LP | 1.47% | 550K | $747,980 | −33,348 (−5.7%) | June 30, 2026 |
| 19 | Adage Capital Partners Gp LLC | 1.44% | 540K | $734,571 | — | June 30, 2026 |
| 20 | Woodline Partners LP | 1.42% | 531K | $722,505 | +207,343 (+64.0%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 15 holders added 14.0M shares and 4 cut 2.9M.
TENX top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | iShares Russell 2000 ETF | 2.47% | 923K | $1.3M | −10,624 (−1.1%) | September 30, 2026 |
| 2 | Vanguard MStar Total Stk Mkt Idx Invest | 2.28% | 852K | $1.2M | — | August 31, 2026 |
| 3 | RTW Biotech Opportunities Ord | 2.06% | 773K | $1.1M | +772,764 (0.0%) | December 31, 2025 |
| 4 | Fidelity Advisor Biotechnology I | 1.19% | 445K | $605,336 | — | August 31, 2026 |
| 5 | iShares Russell 2000 Value ETF | 0.90% | 336K | $457,311 | +510 (+0.2%) | September 30, 2026 |
| 6 | Fidelity Small Cap Discovery | 0.90% | 335K | $455,622 | +20,955 (+6.7%) | July 31, 2026 |
| 7 | Fidelity Series Small Cap Discovery | 0.80% | 299K | $406,776 | +18,000 (+6.4%) | July 31, 2026 |
| 8 | Fidelity Series Small Cap Core | 0.75% | 282K | $384,064 | — | July 31, 2026 |
| 9 | Fidelity Small Cap Index | 0.74% | 276K | $374,956 | +2,418 (+0.9%) | July 31, 2026 |
| 10 | CREF Total Global Stock Account R3 | 0.39% | 144K | $196,357 | +54,180 (+60.1%) | July 31, 2026 |
| 11 | Vanguard Russell 2000 ETF | 0.39% | 144K | $196,124 | +2,880 (+2.0%) | August 31, 2026 |
| 12 | BNY Mellon Sm/Md Cp Gr I | 0.33% | 122K | $165,844 | −1,355 (−1.1%) | August 31, 2026 |
| 13 | iShares Micro-Cap ETF | 0.31% | 115K | $156,463 | −793 (−0.7%) | September 30, 2026 |
| 14 | Truvalue Glb Phrmctl Blgcl Eq (QDII) A | 0.19% | 69K | $94,417 | +69,424 (0.0%) | June 30, 2026 |
| 15 | Schwab Small Cap Index | 0.16% | 61K | $83,197 | — | August 31, 2026 |
| 16 | Fidelity Enhanced Small Cap Core ETF | 0.16% | 61K | $83,089 | +126 (+0.2%) | September 30, 2026 |
| 17 | Bridgeway Ultra-Small Company | 0.16% | 60K | $81,464 | +15,000 (+33.4%) | June 30, 2026 |
| 18 | Stt Strt SPDR® Russell2000 US SmCapETF | 0.14% | 54K | $73,086 | +2,560 (+5.0%) | August 31, 2026 |
| 19 | DFA US Micro Cap I | 0.14% | 53K | $72,613 | +164 (+0.3%) | August 31, 2026 |
| 20 | ALPS Medical Breakthroughs ETF | 0.13% | 49K | $66,946 | — | September 30, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
TENX insider transactions
latest 9| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2025-12-08 | Stuart Rich | Buy | $10.10 | 2,500 | $25,250 |
| 2025-12-04 | Stuart Rich | Buy | $9.20 | 2,500 | $23,000 |
| 2025-12-03 | Stuart Rich | Buy | $9.08 | 1,500 | $13,620 |
| 2025-12-02 | Stuart Rich | Buy | $9.01 | 1,000 | $9,010 |
| 2025-11-20 | Christopher Thomas Giordano | Buy | $7.59 | 538 | $4,083 |
| 2025-11-19 | Christopher Thomas Giordano | Buy | $7.51 | 455 | $3,417 |
| 2025-11-18 | Christopher Thomas Giordano | Buy | $7.75 | 1,612 | $12,493 |
| 2025-11-17 | Thomas Mcgauley | Buy | $7.34 | 2,000 | $14,680 |
| 2025-11-17 | Thomas Mcgauley | Buy | $7.25 | 6,000 | $43,500 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
TENX shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns TENX
Institutional investors own 113.0% of Tenax Therapeutics's shares and insiders 0.18%. The largest holder is FMR Inc with 10.53% of the shares (3.9M), as of June 30, 2026. Among the top 20 institutions, 15 added shares and 4 reduced their stake in the latest filings. Short interest is 19.35% of the float, or 1.49 days of average trading volume. The share count rose 4,357,366.7% since 2014.
Related: TENX analyst forecast, TENX key metrics. See the TENX stock overview for the latest quote and news.
TENX ownership FAQ
Who owns the most Tenax Therapeutics stock?
The largest shareholders of Tenax Therapeutics are FMR Inc (10.53%), Vivo Capital, LLC (6.68%), HHG PLC (4.85%), BlackRock Inc (4.62%), Perceptive Advisors LLC (4.54%).
What percentage of Tenax Therapeutics is owned by institutions?
Institutions hold 113.0% of Tenax Therapeutics's shares outstanding; insiders hold 0.18%.
Which funds own Tenax Therapeutics?
The largest fund holders of Tenax Therapeutics are iShares Russell 2000 ETF (2.47%), Vanguard MStar Total Stk Mkt Idx Invest (2.28%), RTW Biotech Opportunities Ord (2.06%), Fidelity Advisor Biotechnology I (1.19%), iShares Russell 2000 Value ETF (0.90%).
What is Tenax Therapeutics's short interest?
7.2M shares of Tenax Therapeutics were sold short, 19.35% of the float; at the average daily volume it would take 1.49 days to cover.
Are insiders buying or selling Tenax Therapeutics?
Of the latest 9 reported insider transactions in Tenax Therapeutics (since November 17, 2025), 9 were purchases and 0 were sales.
How many shares of Tenax Therapeutics are outstanding?
Tenax Therapeutics has 37.4M shares outstanding, of which 30.8M are in the public float.