Ticker · CUSIP 601137102
Holders (tracked)
14
Combined shares
17,868,860
Combined value
$530.06M
Last close
—
Quarter
2025Q4
Tracked holders · last 8 quarters
+2 vs previous quarter over the last 4.
SEC event timeline
24 events
- Greenhaven Associates exited2026-04-06−4,596,584 shares · 2026Q113F
- D.E. Shaw & Co. opened position2026-02-17+97,804 shares · 2025Q413F
- Two Sigma Investments added2026-02-17+1,392,191 shares · 2025Q413F
- Steve Cohen (Point72) opened position2026-02-17+51,484 shares · 2025Q413F
- Ken Griffin (Citadel Advisors) added2026-02-17+3,206,342 shares · 2025Q413F
- T. Rowe Price added2026-02-17+30,569 shares · 2025Q413F
- Wellington Management trimmed2026-02-17−2,267,132 shares · 2025Q413F
- Izzy Englander (Millennium Mgmt) trimmed2026-02-17−317,102 shares · 2025Q413F
- Ron Baron (Baron Capital / BAMCO) exited2026-02-17−20 shares · 2025Q413F
- AQR Capital Management trimmed2026-02-17−133,571 shares · 2025Q413F
- Renaissance Technologies trimmed2026-02-12−23,133 shares · 2025Q413F
- Norges Bank (Norway SWF) opened position2026-02-10+3,408,096 shares · 2025Q413F
- Mario Gabelli (GAMCO) trimmed2026-02-05−6,894 shares · 2025Q413F
- Greenhaven Associates trimmed2026-01-07−4,689 shares · 2025Q413F
- T. Rowe Price added2025-11-14+11,730 shares · 2025Q313F
- Wellington Management added2025-11-14+908,189 shares · 2025Q313F
- −171,506 shares · 2025Q313F
- AQR Capital Management trimmed2025-11-14−451,201 shares · 2025Q313F
- Izzy Englander (Millennium Mgmt) added2025-11-14+896,938 shares · 2025Q313F
- Two Sigma Investments opened position2025-11-14+474,618 shares · 2025Q313F
- Norges Bank (Norway SWF) exited2025-11-13−547,665 shares · 2025Q313F
- Renaissance Technologies added2025-11-13+343,400 shares · 2025Q313F
- Mario Gabelli (GAMCO) trimmed2025-11-12−8,758 shares · 2025Q313F
- Greenhaven Associates trimmed2025-11-04−3,286,243 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 positions3
- Norges Bank (Norway SWF)+3,408,096$101.8M
- D.E. Shaw & Co.+97,804$2.9M
- Steve Cohen (Point72)+51,484$1.5M
Added to3
- Ken Griffin (Citadel Advisors)+3,206,342$95.8M
- Two Sigma Investments+1,392,191$41.6M
- T. Rowe Price+30,569$913
Trimmed6
- Wellington Management−2,267,132$67.7M
- Izzy Englander (Millennium Mgmt)−317,102$9.5M
- AQR Capital Management−133,571$4.0M
- Renaissance Technologies−23,133$691K
- Mario Gabelli (GAMCO)−6,894$206K
- Greenhaven Associates−4,689$140K
Exited1
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2025Q1 | 16 | $449.8M |
| 2025Q2 | 12 | $428.6M |
| 2025Q3 | 12 | $420.0M |
| 2025Q4 | 14 | $530.1M |
Congress members trading this stock
| Date | Member | Type | Amount range | Filing |
|---|---|---|---|---|
| 2025-02-24 | Jefferson Shreve | Sell | $1K – $15K | PDF ↗ |
| 2025-02-24 | Jefferson Shreve | Sell | $1K – $15K | PDF ↗ |
Who owns MRP
14 super-investors · 2025Q4
Tracked stake
17.87M
shares
Combined value
$530M
% of shares outstanding
—
shares-out unknown
Quarter action mix
New3Added5Trim6
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Greenhaven Associates | 4.60M | $137M |
| 2 | Ken Griffin Citadel Advisors | 3.75M | $112M |
| 3 | Norges Bank Norway SWF | 3.41M | $102M |
| 4 | Two Sigma Investments | 1.87M | $56M |
| 5 | Izzy Englander Millennium Mgmt | 1.30M | $39M |
| 6 | Renaissance Technologies | 718.9K | $21M |
| 7 | AQR Capital Management | 680.3K | $20M |
| 8 | Wellington Management | 672.6K | $20M |
| 9 | Mario Gabelli GAMCO | 350.3K | $10M |
| 10 | Ken Griffin Citadel Advisors | 144.8K | $4M |
| 11 | Ken Griffin Citadel Advisors | 108.8K | $3M |
| 12 | D.E. Shaw & Co. | 97.8K | $3M |
| 13 | Steve Cohen Point72 | 51.5K | $2M |
| 14 | T. Rowe Price | 122.3K | $4K |
Recent moves
20 transactions
- −4,596,584 · 2026Q1
- −133,571 · 2025Q4
- +97,804 · 2025Q4
- +1,392,191 · 2025Q4
- +3,206,342 · 2025Q4
- +30,569 · 2025Q4
- −2,267,132 · 2025Q4
- −317,102 · 2025Q4
- +51,484 · 2025Q4
- −20 · 2025Q4
- −23,133 · 2025Q4
- +3,408,096 · 2025Q4
- −6,894 · 2025Q4
- −4,689 · 2025Q4
- +896,938 · 2025Q3
- +11,730 · 2025Q3
- +474,618 · 2025Q3
- +908,189 · 2025Q3
- −171,506 · 2025Q3
- −451,201 · 2025Q3
Embed this chart
Paste this iframe anywhere to embed the live MRP chart.
<iframe src="https://openstocks.me/embed/stock/MRP" width="100%" height="480" frameborder="0" loading="lazy" title="MRP chart by OpenStocks" style="border:0;border-radius:12px;background:transparent"></iframe>