Ticker · CUSIP 615369105
Holders (tracked)
28
Combined shares
48,115,091
Combined value
$24.58B
Last close
$455.35
Quarter
2025Q4
Price · 1Y$455.35+33.82 (+8.02%)H $538.45 · L $410.06 · Avg Vol 909K
Congress sell
Tracked holders · last 8 quarters
+2 vs previous quarter over the last 8.
Price is -10.9% vs the avg quarter-end implied price across tracked holders.
SEC event timeline
30 events
- Ken Griffin (Citadel Advisors) trimmed2026-02-17−586,662 shares · 2025Q4Position
- D.E. Shaw & Co. added2026-02-17+157,611 shares · 2025Q4Position
- +64,260 shares · 2025Q4Position
- Two Sigma Investments trimmed2026-02-17−114,989 shares · 2025Q4Position
- Izzy Englander (Millennium Mgmt) trimmed2026-02-17−29,688 shares · 2025Q4Position
- Steve Cohen (Point72) trimmed2026-02-17−56,193 shares · 2025Q4Position
- T. Rowe Price added2026-02-17+726,971 shares · 2025Q4Position
- Wellington Management trimmed2026-02-17−3,729 shares · 2025Q4Position
- Valley Forge Capital added2026-02-17+3,148 shares · 2025Q4Position
- Longview Partners (Guernsey) trimmed2026-02-17−51,727 shares · 2025Q4Position
- +48,783 shares · 2025Q4Position
- −333 shares · 2025Q4Position
- Bill Nygren (Harris / Oakmark) trimmed2026-02-17−652 shares · 2025Q4Position
- AQR Capital Management trimmed2026-02-17−23,264 shares · 2025Q4Position
- Chuck Akre (Akre Capital) trimmed2026-02-13−383,718 shares · 2025Q4Position
- Dodge & Cox trimmed2026-02-13−353 shares · 2025Q4Position
- Norges Bank (Norway SWF) opened position2026-02-10+2,147,599 shares · 2025Q4Position
- Ken Fisher (Fisher Asset Mgmt) trimmed2026-02-09−742 shares · 2025Q4Position
- Mario Gabelli (GAMCO) trimmed2026-02-05−101 shares · 2025Q4Position
- Baillie Gifford & Co trimmed2026-01-23−51,594 shares · 2025Q4Position
- D.E. Shaw & Co. trimmed2025-11-14−28,590 shares · 2025Q3Position
- Lee Ainslie (Maverick Capital) exited2025-11-14−1,366 shares · 2025Q3Position
- T. Rowe Price added2025-11-14+303,360 shares · 2025Q3Position
- Wellington Management trimmed2025-11-14−25,445 shares · 2025Q3Position
- Bill Nygren (Harris / Oakmark) trimmed2025-11-14−315 shares · 2025Q3Position
- Hillhouse (HHLR Advisors) added2025-11-14+412 shares · 2025Q3Position
- AQR Capital Management trimmed2025-11-14−5,712 shares · 2025Q3Position
- Izzy Englander (Millennium Mgmt) added2025-11-14+38,995 shares · 2025Q3Position
- Steve Cohen (Point72) opened position2025-11-14+345,071 shares · 2025Q3Position
- Two Sigma Investments added2025-11-14+299,724 shares · 2025Q3Position
Insider activity
No insider transactions in the last 30 days.
Follow-the-investor returns
If you'd copied each holder of MCO…
Cost basis inferred from each manager's quarter-over-quarter position changes. Sorted by % return on the position they're still holding.
| Investor | First in | Cost basis | Return | Position value today |
|---|---|---|---|---|
| Warren Buffett (Berkshire Hathaway) | 2016Q1 | $96.56 | +371.6% | $11.23B |
| Chuck Akre (Akre Capital) | 2016Q1 | $102.20 | +345.5% | $790.1M |
| Dodge & Cox | 2016Q1 | $104.57 | +335.5% | $552K |
| Tom Gayner (Markel Group) | 2016Q1 | $104.87 | +334.2% | $97.4M |
| Baillie Gifford & Co | 2016Q1 | $104.92 | +334.0% | $312.8M |
| Bill Nygren (Harris / Oakmark) | 2017Q1 | $235.72 | +93.2% | $887K |
| Chris Hohn (TCI Fund Mgmt) | 2016Q1 | $248.69 | +83.1% | $6.06B |
| Valley Forge Capital | 2016Q4 | $252.61 | +80.3% | $599.8M |
| Longview Partners (Guernsey) | 2022Q1 | $278.15 | +63.7% | $440.1M |
| Wellington Management | 2016Q1 | $331.36 | +37.4% | $37.5M |
| Ron Baron (Baron Capital / BAMCO) | 2018Q2 | $371.20 | +22.7% | $16.3M |
| Ken Fisher (Fisher Asset Mgmt) | 2016Q1 | $419.02 | +8.7% | $930K |
| Mario Gabelli (GAMCO) | 2024Q2 | $441.77 | +3.1% | $6.9M |
| Hillhouse (HHLR Advisors) | 2023Q4 | $449.99 | +1.2% | $1.3M |
| T. Rowe Price | 2016Q1 | $456.21 | -0.2% | $781.5M |
| AQR Capital Management | 2016Q1 | $471.06 | -3.3% | $36.3M |
| Two Sigma Investments | 2016Q1 | $472.50 | -3.6% | $95.3M |
| Steve Cohen (Point72) | 2016Q3 | $476.12 | -4.4% | $131.5M |
| Izzy Englander (Millennium Mgmt) | 2016Q1 | $502.50 | -9.4% | $5.0M |
| Izzy Englander (Millennium Mgmt) | 2016Q1 | $502.50 | -9.4% | $5.0M |
| Izzy Englander (Millennium Mgmt) | 2016Q1 | $502.50 | -9.4% | $5.0M |
| Paul Tudor Jones (Tudor Investment) | 2016Q1 | $508.51 | -10.5% | $22.2M |
| Ken Griffin (Citadel Advisors) | 2016Q1 | $509.17 | -10.6% | $5.4M |
| Ken Griffin (Citadel Advisors) | 2016Q1 | $509.17 | -10.6% | $5.4M |
| Ken Griffin (Citadel Advisors) | 2016Q1 | $509.17 | -10.6% | $5.4M |
| D.E. Shaw & Co. | 2016Q1 | $509.20 | -10.6% | $76.0M |
| Philippe Laffont (Coatue) | 2025Q4 | $510.85 | -10.9% | $29.3M |
| Norges Bank (Norway SWF) | 2016Q1 | $8042.97 | -94.3% | $977.9M |
Who moved on this name in 2025Q4
Position changes reported for the latest quarter, grouped by direction.
New positions3
- Norges Bank (Norway SWF)+2,147,599$1.10B
- Philippe Laffont (Coatue)+64,260$32.8M
- Paul Tudor Jones (Tudor Investment)+48,783$24.9M
Added to3
- D.E. Shaw & Co.+157,611$80.5M
- Valley Forge Capital+3,148$1.6M
- T. Rowe Price+726,971$371K
Trimmed14
- Ken Griffin (Citadel Advisors)−586,662$299.7M
- Chuck Akre (Akre Capital)−383,718$196.0M
- Two Sigma Investments−114,989$58.7M
- Steve Cohen (Point72)−56,193$28.7M
- Longview Partners (Guernsey)−51,727$26.4M
- Baillie Gifford & Co−51,594$26.4M
- Izzy Englander (Millennium Mgmt)−29,688$15.2M
- AQR Capital Management−23,264$11.9M
- Wellington Management−3,729$1.9M
- Ken Fisher (Fisher Asset Mgmt)−742$379K
- + 4 more…
Exited0
—
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2022Q1 | 24 | $525.96B |
| 2022Q2 | 23 | $395.52B |
| 2022Q3 | 25 | $15.17B |
| 2022Q4 | 25 | $17.68B |
| 2023Q1 | 24 | $20.07B |
| 2023Q2 | 27 | $22.54B |
| 2023Q3 | 23 | $12.68B |
| 2023Q4 | 25 | $25.46B |
| 2024Q1 | 26 | $25.52B |
| 2024Q2 | 25 | $26.94B |
| 2024Q3 | 28 | $23.47B |
| 2024Q4 | 31 | $22.82B |
| 2025Q1 | 31 | $21.00B |
| 2025Q2 | 28 | $23.71B |
| 2025Q3 | 26 | $22.05B |
| 2025Q4 | 28 | $24.58B |
Congress members trading this stock
| Date | Member | Type | Amount range | Filing |
|---|---|---|---|---|
| 2025-09-23 | Valerie Hoyle | Sell | $1K – $15K | PDF ↗ |
| 2025-06-11 | Lisa McClain | Sell | $1K – $15K | PDF ↗ |
| 2025-06-10 | Lisa McClain | Sell (P) | $1K – $15K | PDF ↗ |
| 2025-04-11 | Dan Newhouse | Sell (P) | $1K – $15K | PDF ↗ |
| 2024-12-11 | Lisa McClain | Buy | $1K – $15K | PDF ↗ |
| 2024-10-29 | Valerie Hoyle | Buy | $1K – $15K | PDF ↗ |
Who owns MCO
28 super-investors · 2025Q4
Tracked stake
48.12M
shares
Combined value
$24.58B
% of shares outstanding
—
shares-out unknown
Quarter action mix
New3Added3Trim18Held4
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Warren Buffett Berkshire Hathaway | 24.67M | $12.60B |
| 2 | Chris Hohn TCI Fund Mgmt | 13.31M | $6.80B |
| 3 | Norges Bank Norway SWF | 2.15M | $1.10B |
| 4 | Chuck Akre Akre Capital | 1.74M | $886M |
| 5 | T. Rowe Price | 1.72M | $877M |
| 6 | Valley Forge Capital | 1.32M | $673M |
| 7 | Longview Partners Guernsey | 966.5K | $494M |
| 8 | Baillie Gifford & Co | 687.0K | $351M |
| 9 | Ken Griffin Citadel Advisors | 295.5K | $151M |
| 10 | Steve Cohen Point72 | 288.9K | $148M |
| 11 | Tom Gayner Markel Group | 213.9K | $109M |
| 12 | Two Sigma Investments | 209.3K | $107M |
| 13 | D.E. Shaw & Co. | 166.9K | $85M |
| 14 | Wellington Management | 82.3K | $42M |
| 15 | AQR Capital Management | 79.6K | $41M |
| 16 | Philippe Laffont Coatue | 64.3K | $33M |
| 17 | Paul Tudor Jones Tudor Investment | 48.8K | $25M |
| 18 | Ron Baron Baron Capital / BAMCO | 35.7K | $18M |
| 19 | Ken Griffin Citadel Advisors | 27.2K | $14M |
| 20 | Mario Gabelli GAMCO | 15.1K | $8M |
| 21 | Ken Griffin Citadel Advisors | 11.8K | $6M |
| 22 | Izzy Englander Millennium Mgmt | 11.0K | $6M |
| 23 | Izzy Englander Millennium Mgmt | 5.8K | $3M |
| 24 | Izzy Englander Millennium Mgmt | 2.9K | $1M |
| 25 | Hillhouse HHLR Advisors | 2.9K | $1M |
| 26 | Ken Fisher Fisher Asset Mgmt | 2.0K | $1M |
| 27 | Bill Nygren Harris / Oakmark | 1.9K | $995K |
| 28 | Dodge & Cox | 1.2K | $620K |
Recent moves
20 transactions
- −333 · 2025Q4
- +157,611 · 2025Q4
- −652 · 2025Q4
- +726,971 · 2025Q4
- −29,688 · 2025Q4
- +64,260 · 2025Q4
- −586,662 · 2025Q4
- −23,264 · 2025Q4
- −3,729 · 2025Q4
- −114,989 · 2025Q4
- +3,148 · 2025Q4
- −51,727 · 2025Q4
- +48,783 · 2025Q4
- −56,193 · 2025Q4
- TRIMDodge & Cox−353 · 2025Q4
- −383,718 · 2025Q4
- +2,147,599 · 2025Q4
- −742 · 2025Q4
- −101 · 2025Q4
- −51,594 · 2025Q4
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