RMTI
Rockwell Medical, Inc.
$5.54
+0.35 (+6.74%)
At close · Jul 2
Market Cap
$218.67M
Shares
39,470,299
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: 43
Total Value: $24,367,720
Total Shares: 4,010,421
Institutional Ownership Trend
16 quarters
Holder Concentration
Across 43 13F filers · Δ vs Dec 31, 2025Top Holder
23.4%
−15.8 pts
Top 5
60.0%
−12.8 pts
Top 10
78.1%
−9.4 pts
HHI
1,046
Broadly held−886
Quarterly Activity
vs Dec 31, 2025
New
13
Increased
10
Decreased
8
Sold Out
7
Unchanged
12
Holder count:
+6
Institutional value:
-17.9%
Shares held:
+12.7%
Top Buyers
vs Dec 31, 2025| Institution | Added | Now Holds | Open |
|---|---|---|---|
| Large RENAISSANCE TECHNOLOGIES LLC | +17,080 | 63,912 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC | +6,436 | 42,918 | |
| Mega UBS Group AG | +3,917 | 17,889 | |
| Mega BlackRock, Inc. | +1,597 | 23,667 | |
| Small PERKINS CAPITAL MANAGEMENT INC | +250 | 7,037 |
Top Sellers
vs Dec 31, 2025| Institution | Sold | Now Holds | Open |
|---|---|---|---|
| Mega CITADEL ADVISORS LLC | −9,309 | 3,260 | |
| Mega JANE STREET GROUP, LLC | −2,212 | 7,896 | |
| Mid XTX Topco Ltd | −1,526 | 4,684 | |
| Mid Tower Research Capital LLC (TRC) | −442 | 204 | |
| Mega LPL Financial LLC | −100 | 4,074 |
Top New Positions
vs Dec 31, 2025| Institution | Acquired | Value (USD) | Open |
|---|---|---|---|
| Mid Wealthspire Advisors, LLC | 15,184 | $1,356,217 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC | 118,236 | $1,052,301 | |
| Small CORSAIR CAPITAL MANAGEMENT, L.P. | 5,000 | $446,600 | |
| Large PRUDENTIAL FINANCIAL INC | 3,580 | $319,765 | |
| Mid HARBOUR INVESTMENTS, INC. | 3,367 | $300,776 |
Top Sold-Out Positions
vs Dec 31, 2025| Institution | Previously Held | Last Value (USD) | Open |
|---|---|---|---|
| Mega VANGUARD GROUP INC | 139,699 | $11,643,910 | |
| Small TWO SIGMA SECURITIES, LLC | 3,419 | $284,981 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | 2,130 | $177,535 | |
| Mid SIMPLEX TRADING, LLC | 227 | $18,945 | |
| Mega BANK OF AMERICA CORP /DE/ | 58 | $4,792 |
| Holder | Value (USD) | % of 13F | Shares | Type | Discretion | Filed | Open | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Large RENAISSANCE TECHNOLOGIES LLC | $5,708,619 | 23.43% | 639,120 | Shares | Sole | 2026-05-14 | ||||
| Mega GEODE CAPITAL MANAGEMENT, LLC | $3,833,435 | 15.73% | 429,180 | Shares | Defined | 2026-05-15 | ||||
| Mega BlackRock, Inc. | $2,113,943 | 8.68% | 236,671 | Shares | Sole | 2026-05-13 | ||||
| Mega UBS Group AG | $1,597,808 | 6.56% | 178,886 | Shares | Defined | 2026-05-05 | ||||
| Mid Wealthspire Advisors, LLC | $1,356,217 | 5.57% | 151,838 | Shares | Sole | 2026-05-01 | ||||
| Mega VANGUARD CAPITAL MANAGEMENT LLC | $1,052,301 | 4.32% | 1,182,361 | Shares | Defined | 2026-05-15 | ||||
| Mega NORTHERN TRUST CORP Bank | $933,598 | 3.83% | 104,523 | Shares | Defined | 2026-05-14 | ||||
| Mega STATE STREET CORP | $901,274 | 3.70% | 100,904 | Shares | Defined | 2026-05-15 | ||||
| Large HighTower Advisors, LLC | $835,356 | 3.43% | 93,524 | Shares | Sole | 2026-05-05 | ||||
| Mega JANE STREET GROUP, LLC | $705,234 | 2.89% | 78,956 | Shares | Defined | 2026-05-12 | ||||
| Small PERKINS CAPITAL MANAGEMENT INC | $628,553 | 2.58% | 70,371 | Shares | Sole | 2026-04-23 | ||||
| Large PANAGORA ASSET MANAGEMENT INC | $622,792 | 2.56% | 69,726 | Shares | Sole | 2026-05-14 | ||||
| Small CORSAIR CAPITAL MANAGEMENT, L.P. | $446,600 | 1.83% | 50,000 | Shares | Sole | 2026-05-15 | ||||
| Mid XTX Topco Ltd | $418,339 | 1.72% | 46,836 | Shares | Defined | 2026-05-15 | ||||
| Mega LPL Financial LLC | $363,916 | 1.49% | 40,743 | Shares | Sole | 2026-05-06 | ||||
| Small WealthTrust Axiom LLC | $349,241 | 1.43% | 39,100 | Shares | Sole | 2026-05-11 | ||||
| Large PRUDENTIAL FINANCIAL INC | $319,765 | 1.31% | 35,800 | Shares | Defined | 2026-05-13 | ||||
| Mid HARBOUR INVESTMENTS, INC. | $300,776 | 1.23% | 33,674 | Shares | Sole | 2026-05-15 | ||||
| Micro Richmond Brothers, Inc. | $273,416 | 1.12% | 30,611 | Shares | Sole | 2026-05-11 | ||||
| Small Spartan Wealth Advisory Services LLC | $223,389 | 0.92% | 25,010 | Shares | Sole | 2026-05-06 | ||||
| Small Beacon Financial Advisory LLC | $220,129 | 0.90% | 24,645 | Shares | Sole | 2026-04-27 | ||||
| Mega VANGUARD FIDUCIARY TRUST CO Bank | $205,819 | 0.84% | 231,258 | Shares | Defined | 2026-05-08 | ||||
| Mega CITADEL ADVISORS LLC | $175,067 | 0.72% | 19,600 | Call | Defined | 2026-05-15 | ||||
| Small Burford Brothers, Inc. | $126,548 | 0.52% | 14,168 | Shares | Sole | 2026-04-27 | ||||
| Mega CITADEL ADVISORS LLC | $116,116 | 0.48% | 13,000 | Put | Defined | 2026-05-15 | ||||
| Large HRT FINANCIAL LP | $113,990 | 0.47% | 12,762 | Shares | Defined | 2026-05-14 | ||||
| Mid Mutual Advisors, LLC | $107,184 | 0.44% | 12,000 | Shares | Sole | 2026-05-04 | ||||
| Mega CITIGROUP INC | $91,785 | 0.38% | 10,276 | Shares | Defined | 2026-05-11 | ||||
| Large COMMONWEALTH EQUITY SERVICES, LLC | $90,070 | 0.37% | 10,084 | Shares | Sole | 2026-04-27 | ||||
| Mega WELLS FARGO & COMPANY/MN | $44,543 | 0.18% | 4,987 | Shares | Defined | 2026-05-11 | ||||
| Mega MORGAN STANLEY | $34,548 | 0.14% | 3,868 | Shares | Defined | 2026-05-15 | ||||
| Mid Tower Research Capital LLC (TRC) | $18,239 | 0.07% | 2,042 | Shares | Defined | 2026-05-15 | ||||
| Small SHP Wealth Management | $12,692 | 0.05% | 1,421 | Shares | Sole | 2026-05-08 | ||||
| Mega Vanguard Global Advisers, LLC | $9,408 | 0.04% | 10,571 | Shares | Defined | 2026-05-08 | ||||
| Large OSAIC HOLDINGS, INC. | $3,974 | 0.02% | 445 | Shares | Defined | 2026-05-15 | ||||
| Micro Vermillion Wealth Management, Inc. | $3,215 | 0.01% | 360 | Shares | Sole | 2026-04-17 | ||||
| Mid GROUP ONE TRADING LLC | $2,617 | 0.01% | 293 | Shares | Sole | 2026-05-13 | ||||
| Micro Scarborough Advisors, LLC | $2,402 | 0.01% | 269 | Shares | Sole | 2026-05-07 | ||||
| Large JONES FINANCIAL COMPANIES LLLP | $2,304 | 0.01% | 258 | Shares | Sole | 2026-05-15 | ||||
| Large FIFTH THIRD BANCORP Bank | $1,455 | 0.01% | 163 | Shares | Defined | 2026-05-01 | ||||
| Mid SBI Securities Co., Ltd. Broker-Dealer | $598 | 0.00% | 67 | Shares | Defined | 2026-04-28 | ||||
| Mega JPMORGAN CHASE & CO | $312 | 0.00% | 35 | Shares | Defined | 2026-05-13 | ||||
| Micro Leo H. Evart, Inc. | $80 | 0.00% | 9 | Shares | Sole | 2026-05-14 | ||||
| Mega FMR LLC | $53 | 0.00% | 6 | Shares | Defined | 2026-05-15 | ||||
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