Ticker · CUSIP 552848103
Holders (tracked)
14
Combined shares
18,981,221
Combined value
$549.48M
Last close
$27.40
Quarter
2025Q4
Tracked holders · last 8 quarters
+3 vs previous quarter over the last 8.
Price is -5.3% vs the avg quarter-end implied price across tracked holders.
SEC event timeline
24 events
- Two Sigma Investments opened position2026-02-17+17,462 shares · 2025Q413F
- Izzy Englander (Millennium Mgmt) trimmed2026-02-17−338,683 shares · 2025Q413F
- Ken Griffin (Citadel Advisors) added2026-02-17+666,022 shares · 2025Q413F
- AQR Capital Management added2026-02-17+2,771,533 shares · 2025Q413F
- T. Rowe Price added2026-02-17+2,155 shares · 2025Q413F
- Wellington Management trimmed2026-02-17−6,249 shares · 2025Q413F
- Jeremy Grantham (GMO) trimmed2026-02-17−149,803 shares · 2025Q413F
- +1,113,207 shares · 2025Q413F
- D.E. Shaw & Co. trimmed2026-02-17−661,458 shares · 2025Q413F
- Ray Dalio (Bridgewater Associates) added2026-02-13+3,619 shares · 2025Q413F
- Norges Bank (Norway SWF) opened position2026-02-10+3,293,922 shares · 2025Q413F
- First Eagle Investment Management added2026-02-04+500 shares · 2025Q413F
- −333,510 shares · 2025Q313F
- AQR Capital Management added2025-11-14+2,511,658 shares · 2025Q313F
- Izzy Englander (Millennium Mgmt) added2025-11-14+489,929 shares · 2025Q313F
- D.E. Shaw & Co. added2025-11-14+134,423 shares · 2025Q313F
- T. Rowe Price added2025-11-14+12,171 shares · 2025Q313F
- Wellington Management trimmed2025-11-14−3,593,287 shares · 2025Q313F
- Jeremy Grantham (GMO) trimmed2025-11-13−77,424 shares · 2025Q313F
- Renaissance Technologies exited2025-11-13−77,800 shares · 2025Q313F
- Norges Bank (Norway SWF) exited2025-11-13−3,443,135 shares · 2025Q313F
- Ray Dalio (Bridgewater Associates) added2025-11-13+14,398 shares · 2025Q313F
- −7,407 shares · 2025Q313F
- Norges Bank (Norway SWF) trimmed2025-11-12−36,950 shares · 2024Q313F
Insider activity
No insider transactions in the last 30 days.
Follow-the-investor returns
If you'd copied each holder of MTG…
Cost basis inferred from 13F share-delta history. Sorted by % return on the position they're still holding.
| Investor | First in | Cost basis | Return | Position value today |
|---|---|---|---|---|
| Two Sigma Investments | 2016Q2 | $2.44 | +1022.6% | $478K |
| T. Rowe Price | 2016Q1 | $5.66 | +384.0% | $4.8M |
| Wellington Management | 2016Q1 | $10.30 | +166.1% | $4.4M |
| First Eagle Investment Management | 2021Q2 | $18.17 | +50.8% | $11.3M |
| Jeremy Grantham (GMO) | 2017Q2 | $18.58 | +47.5% | $11.5M |
| Ray Dalio (Bridgewater Associates) | 2022Q3 | $21.81 | +25.6% | $879K |
| AQR Capital Management | 2016Q1 | $24.89 | +10.1% | $318.3M |
| D.E. Shaw & Co. | 2016Q1 | $26.50 | +3.4% | $7.6M |
| Izzy Englander (Millennium Mgmt) | 2016Q1 | $26.92 | +1.8% | $13.1M |
| Paul Tudor Jones (Tudor Investment) | 2016Q1 | $27.49 | -0.3% | $30.5M |
| Ken Griffin (Citadel Advisors) | 2016Q1 | $29.20 | -6.2% | $395K |
| Ken Griffin (Citadel Advisors) | 2016Q1 | $29.20 | -6.2% | $395K |
| Ken Griffin (Citadel Advisors) | 2016Q1 | $29.20 | -6.2% | $395K |
| Norges Bank (Norway SWF) | 2016Q1 | $374.09 | -92.7% | $90.3M |
Who moved on this name in 2025Q4
13F transactions reported for the latest quarter, grouped by direction.
New positions3
- Norges Bank (Norway SWF)+3,293,922$96.2M
- Paul Tudor Jones (Tudor Investment)+1,113,207$32.5M
- Two Sigma Investments+17,462$510K
Added to5
- AQR Capital Management+2,771,533$81.0M
- Ken Griffin (Citadel Advisors)+666,022$19.5M
- Ray Dalio (Bridgewater Associates)+3,619$106K
- First Eagle Investment Management+500$15K
- T. Rowe Price+2,155$63
Trimmed4
- D.E. Shaw & Co.−661,458$19.3M
- Izzy Englander (Millennium Mgmt)−338,683$9.9M
- Jeremy Grantham (GMO)−149,803$4.4M
- Wellington Management−6,249$183K
Exited0
—
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2022Q1 | 15 | $51.20B |
| 2022Q2 | 17 | $53.63B |
| 2022Q3 | 17 | $78.3M |
| 2022Q4 | 17 | $663.4M |
| 2023Q1 | 15 | $641.0M |
| 2023Q2 | 17 | $758.7M |
| 2023Q3 | 17 | $609.7M |
| 2023Q4 | 14 | $692.4M |
| 2024Q1 | 14 | $944.8M |
| 2024Q2 | 14 | $873.3M |
| 2024Q3 | 13 | $406.5M |
| 2024Q4 | 12 | $200.1M |
| 2025Q1 | 12 | $304.5M |
| 2025Q2 | 12 | $465.7M |
| 2025Q3 | 11 | $343.4M |
| 2025Q4 | 14 | $549.5M |
Congress members trading this stock
| Date | Member | Type | Amount range | Filing |
|---|---|---|---|---|
| 2025-06-17 | Lisa McClain | Sell | $1K – $15K | PDF ↗ |
| 2025-06-11 | Lisa McClain | Buy | $1K – $15K | PDF ↗ |
Who owns MTG
14 super-investors · 2025Q4
Tracked stake
18.98M
shares
Combined value
$549M
% of shares outstanding
—
shares-out unknown
Quarter action mix
New3Added7Trim4
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | AQR Capital Management | 11.62M | $339M |
| 2 | Norges Bank Norway SWF | 3.29M | $96M |
| 3 | Paul Tudor Jones Tudor Investment | 1.11M | $33M |
| 4 | Ken Griffin Citadel Advisors | 950.7K | $28M |
| 5 | Izzy Englander Millennium Mgmt | 477.0K | $14M |
| 6 | Jeremy Grantham GMO | 418.5K | $12M |
| 7 | First Eagle Investment Management | 412.3K | $12M |
| 8 | D.E. Shaw & Co. | 278.4K | $8M |
| 9 | Wellington Management | 160.1K | $5M |
| 10 | Ray Dalio Bridgewater Associates | 32.1K | $937K |
| 11 | Ken Griffin Citadel Advisors | 20.4K | $596K |
| 12 | Two Sigma Investments | 17.5K | $510K |
| 13 | Ken Griffin Citadel Advisors | 14.4K | $421K |
| 14 | T. Rowe Price | 176.5K | $5K |
Recent moves
20 transactions
- +17,462 · 2025Q4
- −338,683 · 2025Q4
- −6,249 · 2025Q4
- −149,803 · 2025Q4
- +2,155 · 2025Q4
- TRIMD.E. Shaw & Co.−661,458 · 2025Q4
- +666,022 · 2025Q4
- +1,113,207 · 2025Q4
- +2,771,533 · 2025Q4
- +3,619 · 2025Q4
- +3,293,922 · 2025Q4
- +500 · 2025Q4
- −333,510 · 2025Q3
- −3,593,287 · 2025Q3
- +489,929 · 2025Q3
- +134,423 · 2025Q3
- +12,171 · 2025Q3
- +2,511,658 · 2025Q3
- −77,800 · 2025Q3
- −3,443,135 · 2025Q3
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