MTNB · Matinas BioPharma Holdings, Inc.
$0.18
+0.00 (+0.55%)
At close · Sep 4
Going-concern doubt
— flagged Aug 13, 2026
Substantial doubt about the company's ability to continue as a going concern.
“The Company does not believe that the cash and cash equivalents on hand are sufficient to fund planned operations for a period of at least twelve months from the filing date of these financial statements. As a result, substantial doubt exists about the Company's ability to continue as a going concern.”View the 10-Q filed Aug 13, 2026
Market Cap
$2.67M
Shares
14.69M
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: 25
Total Value: $198,921
Total Shares: 325,055
Institutional Ownership Trend
26 quarters
Holder Concentration
Across 25 13F filers · Δ vs Mar 31, 2026Top Holder
21.9%
+3.5 pts
Top 5
74.8%
+7.3 pts
Top 10
98.4%
+3.5 pts
HHI
1,311
Broadly held+177
Quarterly Activity
vs Mar 31, 2026
New
2
Increased
5
Decreased
3
Sold Out
5
Unchanged
15
Holder count:
-3
Institutional value:
+12.3%
Shares held:
-8.3%
Top Buyers
vs Mar 31, 2026| Institution | Added | Now Holds | Open |
|---|---|---|---|
| Large RENAISSANCE TECHNOLOGIES LLC | +42,470 | 71,040 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | +1,765 | 16,093 | |
| Mega BlackRock, Inc. | +612 | 50,262 | |
| Large OSAIC HOLDINGS, INC. | +2 | 52 | |
| Mid SBI Securities Co., Ltd. | +1 | 12 |
Top Sellers
vs Mar 31, 2026| Institution | Sold | Now Holds | Open |
|---|---|---|---|
| Mega CITADEL ADVISORS LLC | −36,233 | 15,465 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC | −16,035 | 49,135 | |
| Mega VANGUARD FIDUCIARY TRUST CO | −961 | 17,316 |
Top New Positions
vs Mar 31, 2026| Institution | Acquired | Value (USD) | Open |
|---|---|---|---|
| Large NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO | 20 | $12 | |
| Mid IFG Advisory, LLC | 10 | $6 |
Top Sold-Out Positions
vs Mar 31, 2026| Institution | Previously Held | Last Value (USD) | Open |
|---|---|---|---|
| Mid XTX Topco Ltd | 20,706 | $10,353 | |
| Mega UBS Group AG | 184 | $92 | |
| Large Steward Partners Investment Advisory, LLC | 61 | $30 | |
| Mega FMR LLC | 7 | $3 | |
| Large MAI Capital Management | 2 | $1 |
Key facts
CIK
1582554
CUSIP
576810303
13F (30d)
15 filings
15 filers
Visit website
Investor relations