DOSSIER · 13F Holders · Q2 2026
TENX

TENAX THERAPEUTICS INC

117 institutions still hold TENAX THERAPEUTICS INC as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 88032L605·117 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$372M
visible holders
Holders
117
filers reporting
Concentration
15.41%
FMR LLC #1
top holder share
AI Holders Summary · Q2 2026

Tenax Therapeutics' institutional ownership was transformed almost overnight: $298.6 million in tracked institutional value across 71 holders as of the quarter ended March 31, 2026, up from a base where several of today's largest holders didn't exist a quarter earlier. T. Rowe Price Associates opened a brand-new $47.2 million position (2,951,116 shares), instantly the largest in the stock. Janus Henderson Group increased its stake nearly tenfold, from 166,666 to 1,815,474 shares (+$27.0 million), and Stonepine Capital Management grew an 11,884-share position into 975,200 shares — an 82-fold increase worth $15.4 million. Perceptive Advisors, a healthcare-focused specialist, more than tripled its holding (439,142 to 1,447,782 shares, +$17.8 million), while UBS Group grew a nominal 676-share stake to 381,419 shares. All of this activity accompanied roughly a 32% rise in TENX's share price. Against that wall of buying, selling was minimal — only two holders, Sphera Funds Management and Diadema Partners, trimmed their positions, and both cuts were modest by comparison.

Tenax Therapeutics (TENX) shows $298.6 million in tracked institutional value across 71 holders as of the quarter ended March 31, 2026 — and the composition of that book changed dramatically from the prior quarter. Nine holders in the top 20 alone are brand-new positions, and among the holders that already existed, share counts didn't just grow — several multiplied many times over. The data implies TENX's share price rose roughly 32% over the quarter (calculated from consistent per-share values embedded in the top holders' reported changes), meaning this accumulation happened while the stock was already appreciating, not as a contrarian bet into weakness.

New capital, led by a household name
Analysis generated by 13F Insight from SEC Form 13F filing data · Q2 2026. Methodology

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
FMR LLC
CIK 0000315066
$57M3.9M0.00%Q2 2026
02
PRICE T ROWE ASSOCIATES INC /MD/
CIK 0000080255
$47M3.0M0.01%Q1 2026
03
Vivo Capital, LLC
CIK 0001674712
$36M2.5M3.32%Q2 2026
04
JANUS HENDERSON GROUP PLC
CIK 0001274173
$29M1.8M0.01%Q1 2026
05
BlackRock, Inc.
CIK 0002012383
$25M1.7M0.00%Q2 2026
06
PERCEPTIVE ADVISORS LLC
CIK 0001224962
$23M1.4M0.45%Q1 2026
07
Ikarian Capital, LLC
CIK 0001778253
$18M1.1M1.47%Q1 2026
08
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$17M1.1M0.00%Q2 2026
09
CITADEL ADVISORS LLC
CIK 0001423053
$13M895K0.00%Q2 2026
10
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
$13M876K0.00%Q2 2026
11
Candriam S.C.A.
CIK 0001537014
$11M750K0.05%Q2 2026
12
Caption Management, LLC
CIK 0001706766
$11M722K0.05%Q2 2026
13
RTW INVESTMENTS, LP
CIK 0001493215
$10M697K0.09%Q2 2026
14
Stonepine Capital Management, LLC
CIK 0001440771
$10M660K5.42%Q2 2026
15
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$9M640K0.00%Q2 2026
16
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 0001446194· Market maker
$9M621K0.00%Q2 2026
17
Velan Capital Investment Management LP
CIK 0001848809
$9M619K5.48%Q2 2026
18
Point72 Asset Management, L.P.
CIK 0001603466
$9M534K0.01%Q1 2026
19
MARSHALL WACE, LLP
CIK 0001318757
$9M586K0.01%Q2 2026
20
ADAGE CAPITAL PARTNERS GP, L.L.C.
CIK 0001165408
$8M540K0.01%Q2 2026
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Insiders at TENAX THERAPEUTICS INC
Giordano Christopher ThomasStaab Thomas R IiDavidson Michael H.Proehl Gerald TRich StuartHunter RobynDoogan DeclanAlmenoff June Sherie