Who owns MIAX
199 institutions reported holding MIAX for 2026Q1, together 46% of the company, more than the 161 a quarter earlier.
199
Institutions reporting a position · as of 2026Q1 · up from 161 the quarter before
- Shares held by institutions
- 50.4M
Shares held by institutions · 46% of the company · long US equity positions only, as reported on Form 13F
- Reported value
- $1.95B
Reported value · at 2026-03-31 prices, not today's
- Top 5 holders
- 15%
Top 5 holders · of the whole company, between five filers
Details›
- Reporting quarter2026-03-31
- 2026Q1
- Quarters on record
- 3
- New positions
- 72
- Positions exited
- 39
- Added to
- 81
- Reduced
- 26
- Top 10 holdersof the company
- 21%
| Holder | Shares | % of company | Value |
|---|---|---|---|
| T. Rowe Price Investment Management, Inc. | 4.1M | 3.8% | $161M |
| HORIZON ASSET MANAGEMENT LLC | 3.5M | 3.2% | $134M |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 3.3M | 3.0% | $128M |
| VANGUARD GROUP INC | 3.0M | 2.8% | $118M |
| BlackRock Inc. | 2.2M | 2.0% | $87M |
| CITADEL ADVISORS LLC | 1.6M | 1.5% | $63M |
| Invesco Ltd. | 1.6M | 1.5% | $62M |
| Alyeska Investment Group, L.P. | 1.4M | 1.3% | $56M |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 1.2M | 1.1% | $49M |
| JPMORGAN CHASE & CO | 1.2M | 1.1% | $46M |
SEC Form 13F data sets (DERA bulk files). 13F is quarterly, filed up to 45 days late, and covers long US equity positions only, no shorts, no derivatives, nothing held below the reporting threshold.
reading the register…
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