Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in ACON held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | ADVISOR GROUP HOLDINGS, INC. | 35K | $114K | — | 6.553% | 0.00% |
| 2 | GEODE CAPITAL MANAGEMENT, LLC | 31K | $102K | — | 5.853% | 0.00% |
| 3 | CAPTRUST FINANCIAL ADVISORS | 15K | $48K | +45.6% | 2.730% | 0.00% |
| 4 | BANK OF MONTREAL /CAN/ | 10K | $33K | — | 1.875% | 0.00% |
| 5 | UBS Group AG | 10K | $32K | +818.8% | 1.809% | 0.00% |
| 6 | VANGUARD CAPITAL MANAGEMENT LLC | 7K | $22K | — | 1.272% | 0.00% |
| 7 | Dauntless Investment Group, LLC | 5K | $18K | 0.0% | 1.017% | 0.05% |
| 8 | Clear Street Group Inc. | 3 | $10 | 0.0% | 0.001% | 0.00% |
| 9 | CITIGROUP INC | 1 | $3 | 0.0% | 0.000% | 0.00% |
| 10 | DANSKE BANK A/S | 1 | $3 | 0.0% | 0.000% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in ACON — a direct measure of their conviction.
Filings activity in ACON during Q1 2026, grouped by how each filer changed its position.
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 10 | +25% | 22.12% | +17.30 pp | $0M | +359% |
| Q4 2025 | 8 | +14% | 4.82% | 0.06 pp | $0M | 1.3% |
| Q3 2025 | 7 | +40% | 4.88% | +4.06 pp | $0M | +494% |
| Q2 2025 | 5 | 17% | 0.82% | +0.78 pp | $0M | +1789% |
| Q1 2025 | 6 | 40% | 0.04% | 2.33 pp | $0M | 98% |
| Q4 2024 | 10 | +11% | 2.37% | 1.74 pp | $0M | 42% |
| Q3 2024 | 9 | 10% | 4.11% | 1.55 pp | $0M | 27% |
| Q2 2024 | 10 | — | 5.66% | — | $0M | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Latest Form 4 transactions by company officers and directors. Insider buys are widely viewed as the highest-conviction signal because executives are risking personal capital.
| Date | Insider | Action | Shares | Price | Value |
|---|---|---|---|---|---|
| May 12, 2026 | Breidbart Scott | Buy | 6K | $3.18 | $18K |
| May 11, 2026 | Ness Brent | Buy | 6K | $3.18 | $20K |
| May 11, 2026 | Neal David K | Buy | 3K | $3.10 | $8K |
| May 6, 2026 | Wesemann William | Buy | 2K | $3.30 | $5K |
Quick answers to the most common questions about buying ACON stock.
Based on Q1 2026 13F filings, institutional ownership of Aclarion, Inc. stands at 22.1%, held across 10 reporting institutions.
ADVISOR GROUP HOLDINGS, INC. is the largest reported institutional holder of ACON, with approximately 34,945 shares worth $0.00B as of Q1 2026.
No marquee "smart money" managers (Berkshire, Burry, ARK, Tiger Global, Pershing Square, Baupost, etc.) currently appear among the top 25 institutional holders of ACON.
Our composite Smart Money Score for ACON is 52 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
4 institutions opened new positions in ACON during Q1 2026, while 2 fully exited. 2 added to existing positions and 4 trimmed.
ACON institutional ownership rose by 17.30 percentage points quarter-over-quarter, with a net change of +2 holders.
The top 10 institutions account for 100.0% of all reported 13F value in ACON, and the top 25 account for 100.0%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Aclarion, Inc. (ACON) Institutional Ownership