Hyperion DeFi, Inc. (HYPD) shareholders
HYPDNasdaqFinance ServicesFiscal year ends December 31
Financials through Q2 FY2026, quarter ended Jun 30, 2026Last filing: 10-Q on Aug 13, 2026Score 11/3048% below fair value
$2.72+0.01 (+0.37%)
Close on Nov 12, 2026Market cap $42.27MP/E –Yield –
Ownership
Institutional holdings as of Jun 30, 2026, from 13F filings
Held by institutions
16.2%
3M of 16M shares
Institutional holders
33
10 new, 6 sold out
Net institutional buying
1M
In Q2 2026
Insider trades, 12 months
13 buys · 0 sales
Net bought $641.05K
Shares held by institutions
Holders of more than 5%
Latest Schedule 13D (active) or 13G (passive) filed by each holder
| Holder | Shares | % of class | Filing | As of |
|---|---|---|---|---|
| Armistice Capital, LLC Joint filing with Steven Boyd (9.95%) | 8,600,000 | 9.95% | 13G (passive) amendment | Sep 30, 2024 |
| Hyunsu Jung | 500,000 | 9.30% | 13D (active) | Jun 17, 2025 |
| Avenue Capital Management II, L.P. Joint filing with Marc Lasry (6.20%) | 354,291 | 6.20% | 13D (active) amendment | Sep 12, 2025 |
Top institutional holders
13F holdings as of Jun 30, 2026
| Holder | Shares | % of HYPD | Value | Change | % of portfolio |
|---|---|---|---|---|---|
| Vanguard Capital Management LLC | 466,798 | 3.00% | $1.47M | +382,389 | 0.00% |
| Franklin Resources Inc | 395,939 | 2.55% | $1.24M | New | 0.00% |
| Arrington Capital Management, LLC | 297,777 | 1.92% | $935.02K | New | 0.57% |
| Morgan Stanley | 237,986 | 1.53% | $747.28K | – | 0.00% |
| Almanack Investment Partners, LLC. | 169,013 | 1.09% | $530.70K | New | 0.07% |
| Geode Capital Management, LLC | 130,707 | 0.84% | $410.47K | +53,627 | 0.00% |
| Jane Street Group, LLC | 127,491 | 0.82% | $400.32K | −789 | 0.00% |
| Oppenheimer & Co Inc | 126,365 | 0.81% | $396.79K | +62,097 | 0.00% |
| BlackRock, Inc. | 114,400 | 0.74% | $359.22K | +33,292 | 0.00% |
| Goldman Sachs Group Inc | 91,390 | 0.59% | $286.97K | New | 0.00% |
| Vanguard Fiduciary Trust Co | 74,455 | 0.48% | $233.79K | +46,307 | 0.00% |
| Citadel Advisors LLC | 56,299 | 0.36% | $176.78K | −56,607 | 0.00% |
| State Street Corp | 54,357 | 0.35% | $170.68K | +28,500 | 0.00% |
| UBS Group AG | 33,179 | 0.21% | $104.18K | −15,611 | 0.00% |
| Northern Trust Corp | 30,896 | 0.20% | $97.01K | +12,165 | 0.00% |
| Price T Rowe Associates Inc /Md/ | 20,500 | 0.13% | $65.00K | – | 0.00% |
| Peak6 LLC | 20,000 | 0.13% | $62.80K | New | 0.00% |
| Investment House LLC | 17,300 | 0.11% | $54.32K | −34,575 | 0.00% |
| JPMorgan Chase & Co | 16,107 | 0.10% | $51.22K | +16,099 | 0.00% |
| XTX Topco Ltd | 12,289 | 0.08% | $38.59K | −13,286 | 0.00% |
Institutional buying and selling by quarter
Positions opened, added to, reduced and closed by 13F filers
| Quarter | Holders | Shares held | % of shares | New / added | Reduced / closed | Shares bought | Shares sold |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 33 | 3M | 16.2% | 10 / 9 | 6 / 6 | 2M | 0M |
| Q1 2026 | 29 | 1M | 8.6% | 6 / 6 | 5 / 6 | 1M | 0M |
| Q4 2025 | 30 | 1M | 7.3% | 11 / 5 | 6 / 2 | 1M | 0M |
| Q3 2025 | 23 | 1M | 4.7% | 12 / 8 | 2 / 7 | 1M | 0M |
| Q2 2025 | 18 | 0M | 0.9% | 5 / 5 | 4 / 5 | 0M | 0M |
| Q1 2025 | 18 | 0M | 1.8% | 18 / 0 | 0 / 0 | 0M | 0M |
Top mutual fund and ETF holders
Latest monthly portfolio reports (Form N-PORT)
13 funds held HYPD in Q2 2026, 51% of their shares through ETFs. Each fund counts once per quarter, from its quarter-end report.
| Fund | Shares | % of HYPD | Value | % of fund | As of |
|---|---|---|---|---|---|
| Vanguard Total Stock Market Index Fund | 290,757 | 1.87% | $912.98K | 0.00% | Jun 30, 2026 |
| Putnam Small Cap Value Fund | 286,628 | 1.84% | $1.00M | 0.34% | May 31, 2026 |
| Vanguard Extended Market Index Fund | 176,041 | 1.13% | $552.77K | 0.00% | Jun 30, 2026 |
| Putnam VT Small Cap Value Fund | 109,172 | 0.70% | $342.80K | 0.28% | Jun 30, 2026 |
| Fidelity Extended Market Index Fund | 37,727 | 0.24% | $132.04K | 0.00% | May 31, 2026 |
| iShares Micro-Cap ETF | 33,999 | 0.22% | $106.76K | 0.01% | Jun 30, 2026 |
| T. Rowe Price Extended Equity Market Index Fund | 20,500 | 0.13% | $64.37K | 0.01% | Jun 30, 2026 |
| Fidelity Total Market Index Fund | 13,409 | 0.09% | $46.93K | 0.00% | May 31, 2026 |
| Fidelity Series Total Market Index Fund | 10,255 | 0.07% | $35.89K | 0.00% | May 31, 2026 |
| Fidelity Nasdaq Composite Index Fund | 3,922 | 0.03% | $13.73K | 0.00% | May 31, 2026 |
| 1290 VT Micro Cap Portfolio | 2,293 | 0.01% | $7.20K | 0.00% | Jun 30, 2026 |
| Total Stock Market Index Trust | 212 | 0.00% | $666 | 0.00% | Jun 30, 2026 |
| Blackstone Alternative Multi-Strategy Fund | -4,651 | -0.03% | -$14.60K | -0.00% | Jun 30, 2026 |
Officers, directors and major owners
People who filed Forms 3, 4 or 5 in the last two years
| Name | Role | Shares owned | % of shares | Latest filing |
|---|---|---|---|---|
| Hyunsu Jung | See Remarks, Director | 1,345,676 | 8.66% | Aug 18, 2026 |
| Michael M. Rowe | Chief Executive Officer, Director | 7,975 | 0.05% | Jul 9, 2025 |
| David R. Knox | Chief Financial Officer | 287,556 | 1.85% | Sep 30, 2026 |
| Robert Rubenstein | General Counsel | 75,000 | 0.48% | Jan 12, 2026 |
| Bren Kern | Chief Operating Officer | 50,031 | 0.32% | Apr 23, 2025 |
| Happy David Walters | Director | 170,847 | 1.10% | Jul 1, 2026 |
| Ellen R. Strahlman | Director | 184,947 | 1.19% | Jul 1, 2026 |
| Rachel Jacobson | Director | 115,218 | 0.74% | Jul 1, 2026 |
| Michael S. Geltzeiler | Director | 146,932 | 0.95% | Jul 1, 2026 |
| Ram Palanki | Director | 4,235 | 0.03% | Apr 29, 2025 |
| Charles E. Mather Iv | Director | 9,950 | 0.06% | Apr 29, 2025 |
| Tsontcho Ianchulev | Director | 17,780 | 0.11% | Apr 29, 2025 |
| Avenue Capital Management II, L.P. | 10% owner | 30,619 | 0.20% | Jun 3, 2025 |
| Marc Lasry | 10% owner | – | – | Jun 3, 2025 |
| Avenue Venture Opportunities Fund II, L.P. | 10% owner | 30,619 | 0.20% | Jun 3, 2025 |
| Avenue Venture Opportunities Fund, L.P. | 10% owner | – | – | Jun 3, 2025 |
Insider trades
Common stock transactions reported on Form 4, newest first
| Insider | Date | Transaction | Shares | Price | Value | Shares after |
|---|---|---|---|---|---|---|
| David R. Knox Chief Financial Officer | Sep 29, 2026 | Tax withholding | −19,563 | – | – | 287,556 |
| Hyunsu Jung See Remarks, Director | Aug 16, 2026 | Tax withholding | −40,000 | – | – | 1,345,676 |
| Happy David Walters Director | Jun 30, 2026 | Award | +58,917 | – | – | 170,847 |
| Michael S. Geltzeiler Director | Jun 30, 2026 | Award | +58,917 | – | – | 146,932 |
| Ellen R. Strahlman Director | Jun 30, 2026 | Award | +58,917 | – | – | 150,078 |
| Rachel Jacobson Director | Jun 30, 2026 | Award | +58,917 | – | – | 115,218 |
| Hyunsu Jung See Remarks, Director | Jun 2, 2026 | Buy | +500 | $3.68 | $1.84K | 1,385,676 |
| Hyunsu Jung See Remarks, Director | Jun 2, 2026 | Buy | +500 | $3.64 | $1.82K | 1,385,176 |
| Hyunsu Jung See Remarks, Director | Jun 1, 2026 | Buy | +2,000 | $3.81 | $7.62K | 1,384,676 |
| Hyunsu Jung See Remarks, Director | Jun 1, 2026 | Buy | +5,000 | $3.66 | $18.30K | 1,382,676 |
| Hyunsu Jung See Remarks, Director | May 27, 2026 | Tax withholding | −40,000 | – | – | 1,377,676 |
| David R. Knox Chief Financial Officer | Mar 30, 2026 | Tax withholding | −20,831 | – | – | 307,119 |
| Robert Rubenstein General Counsel | Jan 12, 2026 | Award | +75,000 | – | – | 75,000 |
| David R. Knox Chief Financial Officer | Dec 31, 2025 | Buy | +27,950 | $3.59 | $100.34K | 327,950 |
| Ellen R. Strahlman Director | Dec 29, 2025 | Buy | +11,856 | $3.61 | $42.80K | 34,869 |
| Ellen R. Strahlman Director | Dec 29, 2025 | Buy | +12,112 | $3.60 | $43.60K | 91,161 |
| Hyunsu Jung See Remarks, Director | Dec 29, 2025 | Tax withholding | −82,324 | – | – | 1,417,676 |
| Ellen R. Strahlman Director | Dec 26, 2025 | Buy | +3,311 | $3.86 | $12.78K | 23,013 |
| Ellen R. Strahlman Director | Dec 26, 2025 | Buy | +3,601 | $3.86 | $13.90K | 79,049 |
| Ellen R. Strahlman Director | Dec 18, 2025 | Buy | +19,702 | $3.14 | $61.86K | 95,150 |
| Ellen R. Strahlman Director | Dec 18, 2025 | Buy | +18,742 | $3.14 | $58.85K | 75,448 |
| Michael S. Geltzeiler Director | Dec 17, 2025 | Buy | +30,000 | $3.01 | $90.30K | 88,015 |
| Happy David Walters Director | Dec 17, 2025 | Buy | +61,930 | $3.02 | $187.03K | 111,930 |
| David R. Knox Chief Financial Officer | Sep 29, 2025 | Award | +200,000 | – | – | 300,000 |
| David R. Knox Chief Financial Officer | Sep 29, 2025 | Award | +100,000 | – | – | 100,000 |
| Happy David Walters Director | Sep 8, 2025 | Award | +50,000 | – | – | 50,000 |
| Michael S. Geltzeiler Director | Aug 18, 2025 | Award | +50,000 | – | – | 58,015 |
| Rachel Jacobson Director | Aug 18, 2025 | Award | +50,000 | – | – | 56,301 |
| Hyunsu Jung Chief Investment Officer, Director | Aug 18, 2025 | Award | +1,000,000 | – | – | 1,500,000 |
| Ellen R. Strahlman Director | Aug 18, 2025 | Award | +50,000 | – | – | 56,706 |
| Hyunsu Jung Chief Investment Officer, Director | Jun 17, 2025 | Award | +500,000 | – | – | 500,000 |
| Michael M. Rowe Chief Executive Officer, Director | Jun 13, 2025 | Award | +6,600 | – | – | 7,975 |
| Rachel Jacobson Director | Jun 13, 2025 | Award | +5,000 | – | – | 6,301 |
| Ellen R. Strahlman Director | Jun 13, 2025 | Award | +5,000 | – | – | 6,706 |
| Michael S. Geltzeiler Director | Jun 13, 2025 | Award | +7,000 | – | – | 8,015 |
| Rachel Jacobson Director | Apr 21, 2025 | Award | +3,000 | – | – | 4,301 |
| Ellen R. Strahlman Director | Apr 21, 2025 | Award | +3,000 | – | – | 4,706 |
| Charles E. Mather Iv Director | Apr 21, 2025 | Award | +8,000 | – | – | 9,950 |
| Ram Palanki Director | Apr 21, 2025 | Award | +3,000 | – | – | 4,235 |
| Michael S. Geltzeiler Director | Apr 21, 2025 | Award | +5,000 | – | – | 6,015 |
| Tsontcho Ianchulev Director | Apr 21, 2025 | Award | +5,000 | – | – | 10,122 |
| Michael S. Geltzeiler Director | Apr 21, 2025 | Award | +5,000 | – | – | 6,016 |
| Ram Palanki Director | Apr 21, 2025 | Award | +3,000 | – | – | 4,236 |
| Ellen R. Strahlman Director | Apr 21, 2025 | Award | +3,000 | – | – | 4,707 |
| Bren Kern Chief Operating Officer | Apr 21, 2025 | Award | +50,000 | – | – | 50,031 |
| Charles E. Mather Iv Director | Apr 21, 2025 | Award | +8,000 | – | – | 9,953 |
| Rachel Jacobson Director | Apr 21, 2025 | Award | +3,000 | – | – | 4,302 |
| Tsontcho Ianchulev Director | Apr 21, 2025 | Award | +5,000 | – | – | 10,124 |
| Michael M. Rowe Chief Executive Officer, Director | Aug 28, 2024 | Buy | +27,071 | $0.52 | $14.08K | 109,998 |
| Michael M. Rowe Chief Executive Officer, Director | Aug 26, 2024 | Buy | +50,000 | $0.57 | $28.50K | 82,927 |
| Stuart M. Grant 10% owner | Jul 2, 2024 | Buy | +1,515,151 | $0.66 | $1,000.00K | 10,914,153 |
| Tsontcho Ianchulev Director | Jun 12, 2024 | Award | +61,481 | – | – | 409,933 |
| Rachel Jacobson Director | Jun 12, 2024 | Award | +61,481 | – | – | 104,233 |
| Michael S. Geltzeiler Director | Jun 12, 2024 | Award | +61,481 | – | – | 81,295 |
| Ellen R. Strahlman Director | Jun 12, 2024 | Award | +61,481 | – | – | 136,594 |
| Charles E. Mather Iv Director | Jun 12, 2024 | Award | +61,481 | – | – | 156,266 |
| Ram Palanki Director | Jun 12, 2024 | Award | +61,481 | – | – | 98,909 |
| Stuart M. Grant 10% owner | Mar 28, 2024 | Buy | +100,000 | $0.98 | $98.00K | 5,430,715 |
| Stuart M. Grant 10% owner | Mar 19, 2024 | Buy | +50,000 | $1.23 | $61.50K | 5,330,715 |
| Stuart M. Grant 10% owner | Mar 8, 2024 | Buy | +10,717 | $1.58 | $16.93K | 5,280,715 |
Awards, option exercises, tax withholding and gifts are shown alongside open-market buys and sales. Each name links to the filing on SEC EDGAR.
Short interest
Shares sold short and not yet bought back, as of Oct 30, 2026 (FINRA, reported twice a month)
Short % of float
13.90%
1M shares short
Days to cover
5.1
At 0M shares a day
Change since last report
-4.1%
From 1M shares
Short volume, 20 days
50.7%
Of volume reported to FINRA
Shares sold short, last 12 months
Short sale volume counts trades marked short on any given day, including market-maker hedging, so it runs far higher than the share of Hyperion DeFi's stock actually held short. Settlement fails (shares not delivered on time) peaked at 12,913 shares on Oct 5, 2026 over the last 90 days.
Planned insider sales
Notices of proposed sale filed on Form 144 before shares are sold
| Seller | Filed | Shares | Market value | Planned sale | Acquired through |
|---|---|---|---|---|---|
| Charles E. Mather Iv Director | Jul 22, 2025 | 1,362 | $17.52K | Jul 22, 2025 | Open Mkt Purchase |
| Tsontcho Ianchulev Officer | May 1, 2023 | 90,000 | $495.00K | May 1, 2023 | Participation in Capital Raise |
| Tsontcho Ianchulev Officer | Apr 27, 2023 | 60,000 | $300.00K | Apr 27, 2023 | Participation in Capital Raise |
| Tsontcho Ianchulev Officer | Apr 14, 2023 | 40,000 | $180.00K | Apr 14, 2023 | Participation in Capital Raise |
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