PTIX
Protagenic Therapeutics, Inc.newCompany with tickers: PTIX, PTIXW
CIK
1022899
CUSIP
74365N301
Shares Outstanding
1,810,208
Website
https://protagenic.com
Investor Relations
https://protagenic.com/investor-relations
13F Activity (30d)
1 filings
1 filers
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.
Holders: 4
Total Value: $45,356
Total Shares: 66,900
Institutional Ownership Trend
4 quarters
Holder Concentration
Across 4 13F filers · Δ vs Dec 31, 2025Top Holder
62.5%
+16.5 pts
Top 5
100.0%
+0.1 pts
Top 10
100.0%
0.0 pts
HHI
5,297
Highly concentrated+2,164
Quarterly Activity
vs Dec 31, 2025
New
1
Increased
0
Decreased
1
Sold Out
6
Unchanged
2
Holder count:
-5
Institutional value:
-62.5%
Shares held:
-28.2%
Top Buyers
vs Dec 31, 2025No qualifying movers this quarter.
Top Sellers
vs Dec 31, 2025| Institution | Sold | Now Holds | Open |
|---|---|---|---|
| Mid DRW Securities, LLC | −1,071 | 41,783 |
Top New Positions
vs Dec 31, 2025| Institution | Acquired | Value (USD) | Open |
|---|---|---|---|
| Small CoreCap Advisors, LLC | 100 | $67 |
Top Sold-Out Positions
vs Dec 31, 2025| Institution | Previously Held | Last Value (USD) | Open |
|---|---|---|---|
| Mega GEODE CAPITAL MANAGEMENT, LLC | 12,182 | $15,836 | |
| Mega RAYMOND JAMES FINANCIAL INC | 10,001 | $13,001 | |
| Mid Tower Research Capital LLC (TRC) | 3,045 | $3,958 | |
| Large OSAIC HOLDINGS, INC. | 49 | $63 | |
| Small HARBOR INVESTMENT ADVISORY, LLC | 1 | $1 |
| Holder | Value (USD) | % of 13F | Shares | Type | Discretion | Filed | Open | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Mid DRW Securities, LLC Broker-Dealer | $28,328 | 62.46% | 41,783 | Shares | Other | 2026-05-13 | ||||
| Small FNY Investment Advisers, LLC | $16,950 | 37.37% | 25,000 | Shares | Sole | 2026-04-15 | ||||
| Small CoreCap Advisors, LLC | $67 | 0.15% | 100 | Shares | Sole | 2026-04-07 | ||||
| Micro United Financial Planning Group LLC | $11 | 0.02% | 17 | Shares | Sole | 2026-05-08 | ||||
| No holders match your search. | ||||||||||