Ticker · CUSIP 553498106
Holders (tracked)
11
Combined shares
2,549,027
Combined value
$393.57M
Last close
—
Quarter
2025Q4
Tracked holders · last 8 quarters
+4 vs previous quarter over the last 8.
SEC event timeline
18 events
- AQR Capital Management added2026-02-17+7,292 shares · 2025Q413F
- D.E. Shaw & Co. opened position2026-02-17+33,846 shares · 2025Q413F
- Ken Griffin (Citadel Advisors) trimmed2026-02-17−49,475 shares · 2025Q413F
- Izzy Englander (Millennium Mgmt) added2026-02-17+5,531 shares · 2025Q413F
- T. Rowe Price trimmed2026-02-17−301,744 shares · 2025Q413F
- +106,349 shares · 2025Q413F
- Norges Bank (Norway SWF) opened position2026-02-10+417,620 shares · 2025Q413F
- +24 shares · 2025Q413F
- Baillie Gifford & Co trimmed2026-01-23−13,854 shares · 2025Q413F
- AQR Capital Management trimmed2025-11-14−9,418 shares · 2025Q313F
- +756,219 shares · 2025Q313F
- Izzy Englander (Millennium Mgmt) added2025-11-14+41,467 shares · 2025Q313F
- D.E. Shaw & Co. exited2025-11-14−3,841 shares · 2025Q313F
- T. Rowe Price trimmed2025-11-14−754,502 shares · 2025Q313F
- Renaissance Technologies exited2025-11-13−3,800 shares · 2025Q313F
- Norges Bank (Norway SWF) exited2025-11-13−311,390 shares · 2025Q313F
- Norges Bank (Norway SWF) trimmed2025-11-12−26,266 shares · 2024Q313F
- Baillie Gifford & Co trimmed2025-10-31−10,091 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)+417,620$66.9M
- D.E. Shaw & Co.+33,846$5.4M
- First Eagle Investment Management+24$4K
Added to3
- Ruane, Cunniff & Goldfarb (Sequoia)+106,349$17.0M
- AQR Capital Management+7,292$1.2M
- Izzy Englander (Millennium Mgmt)+5,531$886K
Trimmed3
- Ken Griffin (Citadel Advisors)−49,475$7.9M
- Baillie Gifford & Co−13,854$2.2M
- T. Rowe Price−301,744$48K
Exited0
—
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2022Q1 | 11 | $38.55B |
| 2022Q2 | 12 | $34.65B |
| 2022Q3 | 12 | $32.0M |
| 2022Q4 | 11 | $536.7M |
| 2023Q1 | 13 | $501.0M |
| 2023Q2 | 11 | $611.5M |
| 2023Q3 | 12 | $572.9M |
| 2023Q4 | 14 | $674.5M |
| 2024Q1 | 13 | $793.9M |
| 2024Q2 | 12 | $754.8M |
| 2024Q3 | 12 | $150.8M |
| 2024Q4 | 11 | $156.3M |
| 2025Q1 | 10 | $66.7M |
| 2025Q2 | 9 | $239.3M |
| 2025Q3 | 7 | $335.4M |
| 2025Q4 | 11 | $393.6M |
Who owns MSA
11 super-investors · 2025Q4
Tracked stake
2.55M
shares
Combined value
$394M
% of shares outstanding
—
shares-out unknown
Quarter action mix
New3Added3Trim5
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Ruane, Cunniff & Goldfarb Sequoia | 1.81M | $290M |
| 2 | Norges Bank Norway SWF | 417.6K | $67M |
| 3 | Baillie Gifford & Co | 69.1K | $11M |
| 4 | Izzy Englander Millennium Mgmt | 59.8K | $10M |
| 5 | AQR Capital Management | 49.3K | $8M |
| 6 | D.E. Shaw & Co. | 33.8K | $5M |
| 7 | Ken Griffin Citadel Advisors | 13.1K | $2M |
| 8 | Ken Griffin Citadel Advisors | 1.6K | $256K |
| 9 | Ken Griffin Citadel Advisors | 1.5K | $240K |
| 10 | T. Rowe Price | 91.5K | $15K |
| 11 | First Eagle Investment Management | 24 | $4K |
Recent moves
20 transactions
- +33,846 · 2025Q4
- −49,475 · 2025Q4
- TRIMT. Rowe Price−301,744 · 2025Q4
- +7,292 · 2025Q4
- +5,531 · 2025Q4
- +106,349 · 2025Q4
- +417,620 · 2025Q4
- +24 · 2025Q4
- −13,854 · 2025Q4
- SOLDD.E. Shaw & Co.−3,841 · 2025Q3
- TRIMT. Rowe Price−754,502 · 2025Q3
- +41,467 · 2025Q3
- −9,418 · 2025Q3
- +756,219 · 2025Q3
- −3,800 · 2025Q3
- −311,390 · 2025Q3
- −26,266 · 2024Q3
- −10,091 · 2025Q3
- +949,067 · 2025Q2
- −115,508 · 2025Q2
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