Ticker · CUSIP 58470H101
Holders (tracked)
7
Combined shares
1,798,382
Combined value
$18.96M
Last close
—
Quarter
2025Q4
Tracked holders · last 8 quarters
-1 vs previous quarter over the last 8.
SEC event timeline
12 events
- Two Sigma Investments trimmed2026-02-17−148,459 shares · 2025Q413F
- D.E. Shaw & Co. trimmed2026-02-17−44,530 shares · 2025Q413F
- Ken Griffin (Citadel Advisors) added2026-02-17+306,000 shares · 2025Q413F
- T. Rowe Price added2026-02-17+4,500 shares · 2025Q413F
- AQR Capital Management trimmed2026-02-17−179,310 shares · 2025Q413F
- Renaissance Technologies trimmed2026-02-12−20,300 shares · 2025Q413F
- AQR Capital Management added2025-11-14+90,688 shares · 2025Q313F
- Izzy Englander (Millennium Mgmt) exited2025-11-14−92,741 shares · 2025Q313F
- Two Sigma Investments added2025-11-14+22,679 shares · 2025Q313F
- D.E. Shaw & Co. trimmed2025-11-14−57,581 shares · 2025Q313F
- T. Rowe Price added2025-11-14+3,612 shares · 2025Q313F
- Renaissance Technologies trimmed2025-11-13−12,400 shares · 2025Q313F
Insider activity
No insider transactions in the last 30 days.
Who moved on this name in 2025Q4
13F transactions reported for the latest quarter, grouped by direction.
New positions0
—
Added to2
- Ken Griffin (Citadel Advisors)+306,000$3.3M
- T. Rowe Price+4,500$48
Trimmed4
- AQR Capital Management−179,310$1.9M
- Two Sigma Investments−148,459$1.6M
- D.E. Shaw & Co.−44,530$476K
- Renaissance Technologies−20,300$217K
Exited0
—
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2022Q1 | 14 | $22.03B |
| 2022Q2 | 14 | $20.25B |
| 2022Q3 | 15 | $11.8M |
| 2022Q4 | 17 | $253.6M |
| 2023Q1 | 18 | $245.2M |
| 2023Q2 | 17 | $230.9M |
| 2023Q3 | 14 | $186.1M |
| 2023Q4 | 11 | $163.5M |
| 2024Q1 | 10 | $101.4M |
| 2024Q2 | 13 | $87.4M |
| 2024Q3 | 12 | $44.0M |
| 2024Q4 | 14 | $36.6M |
| 2025Q1 | 12 | $26.3M |
| 2025Q2 | 9 | $26.7M |
| 2025Q3 | 8 | $25.7M |
| 2025Q4 | 7 | $19.0M |
Who owns MED
7 super-investors · 2025Q4
Tracked stake
1.80M
shares
Combined value
$19M
% of shares outstanding
—
shares-out unknown
Quarter action mix
Added3Trim4
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Renaissance Technologies | 780.6K | $8M |
| 2 | Ken Griffin Citadel Advisors | 530.8K | $6M |
| 3 | D.E. Shaw & Co. | 219.1K | $2M |
| 4 | AQR Capital Management | 131.5K | $1M |
| 5 | Two Sigma Investments | 80.3K | $858K |
| 6 | Ken Griffin Citadel Advisors | 33.1K | $354K |
| 7 | T. Rowe Price | 22.9K | $245 |
Recent moves
20 transactions
- +306,000 · 2025Q4
- TRIMD.E. Shaw & Co.−44,530 · 2025Q4
- −179,310 · 2025Q4
- −148,459 · 2025Q4
- +4,500 · 2025Q4
- −20,300 · 2025Q4
- TRIMD.E. Shaw & Co.−57,581 · 2025Q3
- +3,612 · 2025Q3
- +22,679 · 2025Q3
- −92,741 · 2025Q3
- +90,688 · 2025Q3
- −12,400 · 2025Q3
- +520 · 2025Q2
- −10,603 · 2025Q2
- +74,096 · 2025Q2
- TRIMD.E. Shaw & Co.−12,217 · 2025Q2
- +20,381 · 2025Q2
- −75,618 · 2025Q2
- −15,346 · 2025Q1
- −25,451 · 2025Q1
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