Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in RMTI held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | VANGUARD CAPITAL MANAGEMENT LLC | 1.2M | $1.1M | β | 2.996% | 0.00% |
| 2 | RENAISSANCE TECHNOLOGIES LLC | 639K | $571K | +36.5% | 1.619% | 0.00% |
| 3 | GEODE CAPITAL MANAGEMENT, LLC | 429K | $383K | +17.6% | 1.087% | 0.00% |
| 4 | BlackRock, Inc. | 237K | $211K | +7.2% | 0.600% | 0.00% |
| 5 | VANGUARD FIDUCIARY TRUST CO | 231K | $207K | β | 0.586% | 0.00% |
| 6 | UBS Group AG | 179K | $160K | +28.0% | 0.453% | 0.00% |
| 7 | Wealthspire Advisors, LLC | 152K | $136K | β | 0.385% | 0.00% |
| 8 | NORTHERN TRUST CORP | 105K | $93K | +2.1% | 0.265% | 0.00% |
| 9 | STATE STREET CORP | 101K | $90K | 0.0% | 0.256% | 0.00% |
| 10 | HighTower Advisors, LLC | 94K | $84K | 0.0% | 0.237% | 0.00% |
| 11 | JANE STREET GROUP, LLC | 79K | $71K | -21.9% | 0.200% | 0.00% |
| 12 | PERKINS CAPITAL MANAGEMENT INC | 70K | $63K | +3.7% | 0.178% | 0.06% |
| 13 | PANAGORA ASSET MANAGEMENT INC | 70K | $62K | +3.6% | 0.177% | 0.00% |
| 14 | CORSAIR CAPITAL MANAGEMENT, L.P. | 50K | $45K | β | 0.127% | 0.01% |
| 15 | XTX Topco Ltd | 47K | $42K | -24.6% | 0.119% | 0.00% |
| 16 | LPL Financial LLC | 41K | $36K | -2.4% | 0.103% | 0.00% |
| 17 | WealthTrust Axiom LLC | 39K | $35K | +3.2% | 0.099% | 0.01% |
| 18 | PRUDENTIAL FINANCIAL INC | 36K | $32K | β | 0.091% | 0.00% |
| 19 | HARBOUR INVESTMENTS, INC. | 34K | $30K | β | 0.085% | 0.00% |
| 20 | Richmond Brothers, Inc. | 31K | $27K | 0.0% | 0.078% | 0.02% |
| 21 | Spartan Wealth Advisory Services LLC | 25K | $22K | β | 0.063% | 0.00% |
| 22 | Beacon Financial Advisory LLC | 25K | $22K | 0.0% | 0.062% | 0.00% |
| 23 | Burford Brothers, Inc. | 14K | $13K | 0.0% | 0.036% | 0.01% |
| 24 | Mutual Advisors, LLC | 12K | $11K | 0.0% | 0.030% | 0.00% |
| 25 | Vanguard Global Advisers, LLC | 11K | $9K | β | 0.027% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). β% of Fundβ shows how much of that investorβs total 13F portfolio is invested in RMTI β a direct measure of their conviction.
Filings activity in RMTI during Q1 2026, grouped by how each filer changed its position.
Institutions that opened a new RMTI position in Q1 2026
Institutions that fully closed their RMTI position in Q1 2026
8 quarters of 13F filings Β· Ξ columns show change vs prior quarter
| Quarter | Inst. Holders | Ξ Holders | Ownership % | Ξ Ownership | Total 13F Value | Ξ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 41 | +21% | 14.36% | +2.83 pp | $4M | +25% |
| Q4 2025 | 34 | 5.6% | 11.53% | 3.94 pp | $3M | 25% |
| Q3 2025 | 36 | 16% | 15.47% | 4.69 pp | $4M | 23% |
| Q2 2025 | 43 | 10% | 20.16% | 47.02 pp | $5M | 70% |
| Q1 2025 | 48 | 7.7% | 67.18% | 1.77 pp | $17M | 2.6% |
| Q4 2024 | 52 | 3.7% | 68.95% | 85.13 pp | $17M | 55% |
| Q3 2024 | 54 | +74% | 154.08% | +113.61 pp | $38M | +281% |
| Q2 2024 | 31 | β | 40.47% | β | $10M | β |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Ξ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying RMTI stock.
Based on Q1 2026 13F filings, institutional ownership of Rockwell Medical, Inc. stands at 14.4%, held across 41 reporting institutions.
VANGUARD CAPITAL MANAGEMENT LLC is the largest reported institutional holder of RMTI, with approximately 1,182,361 shares worth $0.00B as of Q1 2026.
Yes β 2 widely-followed marquee investors appear among the top 25 institutional holders of RMTI, including RENAISSANCE TECHNOLOGIES LLC, JANE STREET GROUP, LLC.
Our composite Smart Money Score for RMTI is 70 out of 100 (Bullish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
14 institutions opened new positions in RMTI during Q1 2026, while 7 fully exited. 23 added to existing positions and 4 trimmed.
RMTI institutional ownership rose by 2.83 percentage points quarter-over-quarter, with a net change of +7 holders.
The top 10 institutions account for 84.4% of all reported 13F value in RMTI, and the top 25 account for 99.1%.
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.
Rockwell Medical, Inc. (RMTI) Institutional Ownership