Who owns CNS Pharmaceuticals (CNSP)
Which tracked institutional funds hold CNSP, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See CNSP company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-08-14). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
The tracked-fund tape on CNSP is one-sided between 2026-Q1 and 2026-Q2: 2 added or opened and 0 trimmed or exited — on balance accumulating.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
CNSP’s largest tracked holder by dollar value, Stonepine Capital Management, LLC, sizes it at 3.8% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 3.8pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in CNSP divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, across 11 tracked filers holding CNSP, 7 increased or opened the position and 6 reduced or closed it; over the same quarter, open-market insider Form 4s were net purchases.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in CNSP between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
Largest adds
- Stonepine Capital Management, LLC$6M
- Ikarian Capital, LLC$539K
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| Stonepine Capital Management, LLC added | 1,345,921 | $6M | 79.6% | 2026-Q2 |
| Ikarian Capital, LLC added | 135,830 | $649K | 8.0% | 2026-Q2 |
| ADAR1 Capital Management, LLC new | 70,000 | $335K | 4.1% | 2026-Q2 |
| BOOTHBAY FUND MANAGEMENT, LLC | 13,524 | $65K | 0.8% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO new | 10,226 | $49K | 0.6% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 6,993 | $33K | 0.4% | 2026-Q2 |
| UBS Group AG added | 1,461 | $7K | 0.1% | 2026-Q2 |
| Tower Research Capital LLC (TRC) trimmed | 799 | $4K | 0.0% | 2026-Q2 |
| BARCLAYS PLC new | 19 | $91 | 0.0% | 2026-Q2 |
| BARRETT & COMPANY, INC. | 8 | $38 | 0.0% | 2026-Q2 |
| DANSKE BANK A/S | 1 | $5 | 0.0% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 23,189 | $56K | 0.7% | 2026-Q1 stale (1 quarter behind) |
| Sound Income Strategies, LLC | 16 | $36 | 0.0% | 2026-Q1 stale (1 quarter behind) |
| MAI Capital Management | 3 | $8 | 0.0% | 2026-Q1 stale (1 quarter behind) |
| CITIGROUP INC trimmed | 1 | $2 | 0.0% | 2026-Q1 stale (1 quarter behind) |
| Caitong International Asset Management Co., Ltd new | 1 | $2 | 0.0% | 2026-Q1 stale (1 quarter behind) |
| DRW Securities, LLC added | 15,429 | $81K | 1.0% | 2025-Q4 stale (2 quarters behind) |
| BANK OF AMERICA CORP /DE/ | 4 | $21 | 0.0% | 2025-Q4 stale (2 quarters behind) |
| MORGAN STANLEY new | 28 | $252 | 0.0% | 2025-Q3 stale (3 quarters behind) |
| ARMISTICE CAPITAL, LLC new | 406,000 | $335K | 4.1% | 2025-Q2 stale (4 quarters behind) |
| Virtu Financial LLC trimmed | 23,348 | $19K | 0.2% | 2025-Q2 stale (4 quarters behind) |
| TWO SIGMA SECURITIES, LLC new | 15,633 | $13K | 0.2% | 2025-Q2 stale (4 quarters behind) |
| HRT FINANCIAL LP trimmed | 10,863 | $8K | 0.1% | 2025-Q2 stale (4 quarters behind) |
| SBI Securities Co., Ltd. trimmed | 13 | $11 | 0.0% | 2025-Q2 stale (4 quarters behind) |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 0 | — | 0.0% | 2025-Q2 stale (4 quarters behind) |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.