PTIX · Protagenic Therapeutics, Inc.\new · Holdings
Substantial doubt about the company's ability to continue as a going concern.
“The Company does not have sufficient resources to fund its operations past twelve months from the date these consolidated financial statements are available to be issued. The Company expects that additional capital may be required during the next 12 months to continue executing its business plan and to meet its obligations as they become due. Accordingly, these conditions raise substantial doubt about the Company's ability to continue as a going concern within one year after the date these financial statements are issued.”View the 10-Q filed Aug 19, 2026
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Institutional Ownership Trend
Who Holds PTIX
Last 8 quarters through Sep 30, 2026 (filing window open)Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.
Jun 30, 2026, the newest closed quarter: 2 filers, like-for-like change -0.2%; actively managed books -0.2%.
| Holder type | Share | Filers | Change |
|---|---|---|---|
| Registered adviser | 0.0% | 0 | -100.0% |
| Bank | 0.0% | 0 | — |
| Holding company | 0.0% | 0 | — |
| Unknown | 100.0% | 2 | 0.0% |
| Style | Share | Filers | Change |
|---|---|---|---|
| Systematic-like | 37.4% | 1 | 0.0% |
| Diversified active | 62.6% | 1 | -0.2% |
| Concentrated | 0.0% | 0 | -100.0% |
| Index-like | 0.0% | 0 | — |
| Not measured | 0.0% | 0 | — |
| Unknown | 0.0% | 0 | — |
| Turnover | Share | Filers | Change |
|---|---|---|---|
| High turnover | 100.0% | 2 | 0.0% |
| Medium turnover | 0.0% | 0 | -100.0% |
| Low turnover | 0.0% | 0 | — |
| Unknown | 0.0% | 0 | -100.0% |
| Not measured | 0.0% | 0 | — |
| Holding horizon | Share | Filers | Change |
|---|---|---|---|
| Medium horizon | 62.6% | 1 | -0.2% |
| Short horizon | 0.0% | 0 | -100.0% |
| Long horizon | 0.0% | 0 | — |
| Unknown | 37.4% | 1 | 0.0% |
| Not measured | 0.0% | 0 | — |
| 13F book size | Share | Filers | Change |
|---|---|---|---|
| Under $1B | 37.4% | 1 | -0.1% |
| $1B to $10B | 62.6% | 1 | -0.2% |
| $10B to $100B | 0.0% | 0 | — |
| $100B or more | 0.0% | 0 | — |
| Not measured | 0.0% | 0 | — |
| Client base | Share | Filers | Change |
|---|---|---|---|
| Individuals and high net worth | 0.0% | 0 | -100.0% |
| Pooled investment vehicles | 0.0% | 0 | — |
| Registered funds and BDCs | 0.0% | 0 | — |
| Diversified | 0.0% | 0 | — |
| Unknown | 100.0% | 2 | 0.0% |
| Private funds | Share | Filers | Change |
|---|---|---|---|
| No private funds | 0.0% | 0 | -100.0% |
| Hedge funds | 0.0% | 0 | — |
| Unknown | 100.0% | 2 | 0.0% |
| Location | Share | Filers | Change |
|---|---|---|---|
| United States | 100.0% | 2 | -0.2% |
| Outside the US | 0.0% | 0 | — |
The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.
How the mix is measured
Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.
Conviction and Crowding
2 13F filers, quarter ended Jun 30, 2026Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.
Managers in the top fifth by current three-year FundScore alpha were net buyers of $0 (0 buying, 0 selling).
Estimated Holder Cost Basis
Quarter ended Jun 30, 2026, on that quarter's share basisEstimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.
Estimated cost covers 100.0% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.
Shareholder Targets
13F filers that own its peers but not PTIX, quarter ended Jun 30, 2026PTIX has no holder-overlap peers, so these filers hold the largest Healthcare stocks: LLY, JNJ, ABBV, UNH, MRK, TMO, AMGN, AZN, GILD, ABT, ISRG, VRTX, CVS, DHR, SYK, BMY, PFE, MDT, MCK, ELV. 6,285 filers in all.
| # | Filer | In peers | Largest peers |
|---|---|---|---|
| 1 | BlackRock, Inc. Holding company, Index-like | $399,992,110,610 20 held | LLY, JNJ, ABBV |
| 2 | VANGUARD CAPITAL MANAGEMENT LLC Registered adviser, Index-like | $308,266,564,827 20 held | LLY, JNJ, ABBV |
| 3 | STATE STREET CORP Bank, Index-like | $222,713,276,889 20 held | LLY, JNJ, ABBV |
| 4 | VANGUARD PORTFOLIO MANAGEMENT LLC Registered adviser, Diversified active | $116,012,260,024 20 held | LLY, JNJ, ABBV |
| 5 | GEODE CAPITAL MANAGEMENT, LLC Registered adviser, Index-like | $112,944,926,328 19 held | LLY, JNJ, ABBV |
| 6 | LILLY ENDOWMENT INC Unknown, Unknown | $108,400,867,760 1 held | LLY |
| 7 | FMR LLC Holding company, Diversified active | $102,008,860,554 20 held | LLY, UNH, GILD |
| 8 | JPMORGAN CHASE & CO Bank, Diversified active | $92,751,126,760 20 held | LLY, JNJ, ABBV |
| 9 | MORGAN STANLEY Holding company, Index-like | $91,022,115,433 20 held | LLY, JNJ, ABBV |
| 10 | Capital World Investors Adviser, Diversified active | $89,827,396,720 14 held | LLY, VRTX, UNH |
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Small FNY Investment Advisers, LLC | — | — | 25,000 | Shares | 2026-10-16 | |
| Mid DRW Securities, LLC | — | — | 41,783 | Shares | 2026-08-14 |