Ticker · CUSIP 553530106
Holders (tracked)
14
Combined shares
2,125,457
Combined value
$175.23M
Last close
$94.17
Quarter
2025Q4
Tracked holders · last 8 quarters
+3 vs previous quarter over the last 8.
Price is +14.2% vs the avg quarter-end implied price across tracked holders.
SEC event timeline
21 events
- +22,654 shares · 2025Q413F
- Ken Griffin (Citadel Advisors) added2026-02-17+60,416 shares · 2025Q413F
- AQR Capital Management added2026-02-17+16,116 shares · 2025Q413F
- Two Sigma Investments trimmed2026-02-17−2,790 shares · 2025Q413F
- Izzy Englander (Millennium Mgmt) trimmed2026-02-17−245,766 shares · 2025Q413F
- Steve Cohen (Point72) added2026-02-17+26,586 shares · 2025Q413F
- T. Rowe Price added2026-02-17+3,227 shares · 2025Q413F
- Wellington Management added2026-02-17+1,875 shares · 2025Q413F
- +9,489 shares · 2025Q413F
- Renaissance Technologies trimmed2026-02-12−113,200 shares · 2025Q413F
- Norges Bank (Norway SWF) opened position2026-02-10+706,066 shares · 2025Q413F
- Steve Cohen (Point72) opened position2025-11-14+14,782 shares · 2025Q313F
- Two Sigma Investments opened position2025-11-14+8,868 shares · 2025Q313F
- AQR Capital Management trimmed2025-11-14−62,971 shares · 2025Q313F
- Izzy Englander (Millennium Mgmt) trimmed2025-11-14−108,573 shares · 2025Q313F
- T. Rowe Price added2025-11-14+1,900 shares · 2025Q313F
- Wellington Management trimmed2025-11-14−7,287 shares · 2025Q313F
- Renaissance Technologies trimmed2025-11-13−62,400 shares · 2025Q313F
- Norges Bank (Norway SWF) exited2025-11-13−469,895 shares · 2025Q313F
- Mario Gabelli (GAMCO) trimmed2025-11-12−200 shares · 2025Q313F
- Norges Bank (Norway SWF) added2025-11-12+101,664 shares · 2024Q313F
Insider activity
No insider transactions in the last 30 days.
Follow-the-investor returns
If you'd copied each holder of MSM…
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 |
|---|---|---|---|---|
| T. Rowe Price | 2016Q1 | $32.47 | +190.0% | $3.9M |
| Two Sigma Investments | 2016Q1 | $76.20 | +23.6% | $572K |
| AQR Capital Management | 2016Q1 | $76.47 | +23.1% | $27.4M |
| Wellington Management | 2016Q1 | $77.78 | +21.1% | $20.5M |
| Ray Dalio (Bridgewater Associates) | 2016Q2 | $80.11 | +17.6% | $894K |
| Renaissance Technologies | 2016Q1 | $81.43 | +15.6% | $5.8M |
| Izzy Englander (Millennium Mgmt) | 2016Q1 | $82.95 | +13.5% | $40.1M |
| Paul Tudor Jones (Tudor Investment) | 2016Q1 | $84.23 | +11.8% | $2.1M |
| Ken Griffin (Citadel Advisors) | 2016Q1 | $84.28 | +11.7% | $5.9M |
| Ken Griffin (Citadel Advisors) | 2016Q1 | $84.28 | +11.7% | $5.9M |
| Ken Griffin (Citadel Advisors) | 2016Q1 | $84.28 | +11.7% | $5.9M |
| Steve Cohen (Point72) | 2016Q1 | $86.63 | +8.7% | $3.9M |
| Mario Gabelli (GAMCO) | 2022Q4 | $88.15 | +6.8% | $1.8M |
| Norges Bank (Norway SWF) | 2016Q1 | $89.72 | +5.0% | $66.5M |
Who moved on this name in 2025Q4
13F transactions reported for the latest quarter, grouped by direction.
New positions3
- Norges Bank (Norway SWF)+706,066$59.4M
- Paul Tudor Jones (Tudor Investment)+22,654$1.9M
- Ray Dalio (Bridgewater Associates)+9,489$798K
Added to5
- Ken Griffin (Citadel Advisors)+60,416$5.1M
- Steve Cohen (Point72)+26,586$2.2M
- AQR Capital Management+16,116$1.4M
- Wellington Management+1,875$158K
- T. Rowe Price+3,227$271
Trimmed3
- Izzy Englander (Millennium Mgmt)−245,766$20.7M
- Renaissance Technologies−113,200$9.5M
- Two Sigma Investments−2,790$235K
Exited0
—
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2022Q1 | 13 | $36.60B |
| 2022Q2 | 14 | $32.37B |
| 2022Q3 | 13 | $36.1M |
| 2022Q4 | 12 | $615.3M |
| 2023Q1 | 14 | $642.6M |
| 2023Q2 | 12 | $708.0M |
| 2023Q3 | 10 | $710.1M |
| 2023Q4 | 11 | $726.4M |
| 2024Q1 | 12 | $677.9M |
| 2024Q2 | 13 | $542.9M |
| 2024Q3 | 11 | $115.3M |
| 2024Q4 | 14 | $142.2M |
| 2025Q1 | 9 | $100.3M |
| 2025Q2 | 9 | $180.9M |
| 2025Q3 | 11 | $141.4M |
| 2025Q4 | 14 | $175.2M |
Who owns MSM
14 super-investors · 2025Q4
Tracked stake
2.13M
shares
Combined value
$175M
% of shares outstanding
—
shares-out unknown
Quarter action mix
New3Added7Trim3Held1
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Norges Bank Norway SWF | 706.1K | $59M |
| 2 | Izzy Englander Millennium Mgmt | 425.5K | $36M |
| 3 | AQR Capital Management | 290.6K | $24M |
| 4 | Wellington Management | 217.4K | $18M |
| 5 | Ken Griffin Citadel Advisors | 165.2K | $14M |
| 6 | Ken Griffin Citadel Advisors | 62.2K | $5M |
| 7 | Renaissance Technologies | 62.0K | $5M |
| 8 | Ken Griffin Citadel Advisors | 56.2K | $5M |
| 9 | Steve Cohen Point72 | 41.4K | $3M |
| 10 | Paul Tudor Jones Tudor Investment | 22.7K | $2M |
| 11 | Mario Gabelli GAMCO | 18.8K | $2M |
| 12 | Ray Dalio Bridgewater Associates | 9.5K | $798K |
| 13 | Two Sigma Investments | 6.1K | $511K |
| 14 | T. Rowe Price | 41.9K | $4K |
Recent moves
20 transactions
- −245,766 · 2025Q4
- +1,875 · 2025Q4
- +22,654 · 2025Q4
- +16,116 · 2025Q4
- +26,586 · 2025Q4
- +3,227 · 2025Q4
- +60,416 · 2025Q4
- −2,790 · 2025Q4
- +9,489 · 2025Q4
- −113,200 · 2025Q4
- +706,066 · 2025Q4
- +14,782 · 2025Q3
- +8,868 · 2025Q3
- −108,573 · 2025Q3
- +1,900 · 2025Q3
- −7,287 · 2025Q3
- −62,971 · 2025Q3
- −469,895 · 2025Q3
- −62,400 · 2025Q3
- +101,664 · 2024Q3
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