Ticker · CUSIP 55354G100
Holders (tracked)
21
Combined shares
7,994,483
Combined value
$4.38B
Last close
$564.90
Quarter
2025Q4
Tracked holders · last 8 quarters
+4 vs previous quarter over the last 8.
21222024Q12025Q4
Price is +3.1% vs the avg quarter-end implied price across tracked holders.

SEC event timeline

30 events
  1. +467,752 shares · 2025Q4
    13F
  2. +382 shares · 2025Q4
    13F
  3. +188,574 shares · 2025Q4
    13F
  4. +151,999 shares · 2025Q4
    13F
  5. −400 shares · 2025Q4
    13F
  6. +136,918 shares · 2025Q4
    13F
  7. +48,819 shares · 2025Q4
    13F
  8. +13,319 shares · 2025Q4
    13F
  9. +11,606 shares · 2025Q4
    13F
  10. +1,070 shares · 2025Q4
    13F
  11. +361,630 shares · 2025Q4
    13F
  12. −116,998 shares · 2025Q4
    13F
  13. +971 shares · 2025Q4
    13F
  14. +921,269 shares · 2025Q4
    13F
  15. −556 shares · 2025Q4
    13F
  16. +155,290 shares · 2025Q4
    13F
  17. −1,663 shares · 2025Q3
    13F
  18. +223,784 shares · 2025Q3
    13F
  19. −137,556 shares · 2025Q3
    13F
  20. −481,799 shares · 2025Q3
    13F
  21. −252,800 shares · 2025Q3
    13F
  22. −14,696 shares · 2025Q3
    13F
  23. −37,730 shares · 2025Q3
    13F
  24. +80,251 shares · 2025Q3
    13F
  25. −2,008 shares · 2025Q3
    13F
  26. +687,766 shares · 2025Q3
    13F
  27. −949,037 shares · 2025Q3
    13F
  28. −140,521 shares · 2025Q3
    13F
  29. −183 shares · 2025Q3
    13F
  30. +37,571 shares · 2024Q3
    13F

Insider activity

No insider transactions in the last 30 days.
Follow-the-investor returns
If you'd copied each holder of MSCI…
Cost basis inferred from 13F share-delta history. Sorted by % return on the position they're still holding.
InvestorFirst inCost basisReturnPosition value today
Tom Gayner (Markel Group)2016Q1$86.63+552.1%$80.7M
T. Rowe Price2016Q1$133.90+321.9%$203.4M
Ron Baron (Baron Capital / BAMCO)2016Q1$231.43+144.1%$1.56B
Ken Fisher (Fisher Asset Mgmt)2018Q4$262.51+115.2%$1.5M
Ray Dalio (Bridgewater Associates)2017Q4$385.39+46.6%$549K
Wellington Management2016Q1$509.27+10.9%$197.2M
Two Sigma Investments2016Q1$550.68+2.6%$210.5M
AQR Capital Management2016Q1$551.00+2.5%$228.5M
Longview Partners (Guernsey)2025Q2$567.82-0.5%$408.9M
Baillie Gifford & Co2025Q2$572.54-1.3%$478.4M
Paul Tudor Jones (Tudor Investment)2016Q1$573.60-1.5%$6.6M
Paul Tudor Jones (Tudor Investment)2016Q1$573.60-1.5%$6.6M
Izzy Englander (Millennium Mgmt)2016Q4$573.61-1.5%$4.5M
Izzy Englander (Millennium Mgmt)2016Q4$573.61-1.5%$4.5M
Izzy Englander (Millennium Mgmt)2016Q4$573.61-1.5%$4.5M
Ken Griffin (Citadel Advisors)2016Q1$573.73-1.5%$280.7M
Ken Griffin (Citadel Advisors)2016Q1$573.73-1.5%$280.7M
Ken Griffin (Citadel Advisors)2016Q1$573.73-1.5%$280.7M
D.E. Shaw & Co.2016Q1$595.71-5.2%$216K
Valley Forge Capital2024Q4$599.55-5.8%$34.3M
Norges Bank (Norway SWF)2016Q1$17903.79-96.8%$520.4M

Who moved on this name in 2025Q4

13F transactions reported for the latest quarter, grouped by direction.

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.
QuarterHoldersCombined value
2022Q1
21
$377.08B
2022Q2
22
$316.29B
2022Q3
18
$328.9M
2022Q4
18
$4.95B
2023Q1
19
$6.18B
2023Q2
21
$5.72B
2023Q3
20
$5.47B
2023Q4
17
$6.22B
2024Q1
22
$6.79B
2024Q2
19
$5.66B
2024Q3
20
$2.97B
2024Q4
19
$2.61B
2025Q1
19
$2.61B
2025Q2
24
$3.62B
2025Q3
17
$3.16B
2025Q4
21
$4.38B
Congress members trading this stock
DateMemberTypeAmount rangeFiling
2025-04-08Rob BresnahanBuy$1K – $15KPDF ↗
2025-04-01Julie JohnsonSell$1K – $15KPDF ↗
2025-03-20Byron DonaldsSell$1K – $15KPDF ↗
2025-03-20Byron DonaldsSell$1K – $15KPDF ↗
2025-01-15Julie JohnsonBuy$1K – $15KPDF ↗
2025-01-13Rob BresnahanSell$1K – $15KPDF ↗

Who owns MSCI

21 super-investors · 2025Q4
Tracked stake
7.99M
shares
Combined value
$4.38B
% of shares outstanding
shares-out unknown
Quarter action mix
New5Added13Trim2Held1
#ManagerSharesValue
1Ron Baron
Baron Capital / BAMCO
2.76M$1.58B
2Norges Bank
Norway SWF
921.3K$529M
3Baillie Gifford & Co846.8K$486M
4Longview Partners
Guernsey
723.8K$415M
5Ken Griffin
Citadel Advisors
496.9K$285M
6Izzy Englander
Millennium Mgmt
486.0K$279M
7AQR Capital Management404.6K$232M
8Two Sigma Investments372.6K$214M
9Wellington Management349.0K$200M
10Tom Gayner
Markel Group
142.8K$82M
11Valley Forge Capital60.8K$35M
12Ken Griffin
Citadel Advisors
21.1K$12M
13Ken Griffin
Citadel Advisors
18.9K$11M
14Paul Tudor Jones
Tudor Investment
11.6K$7M
15Izzy Englander
Millennium Mgmt
9.5K$5M
16Izzy Englander
Millennium Mgmt
8.0K$5M
17Ken Fisher
Fisher Asset Mgmt
2.7K$2M
18Ray Dalio
Bridgewater Associates
971$557K
19Paul Tudor Jones
Tudor Investment
900$516K
20D.E. Shaw & Co.382$219K
21T. Rowe Price360.0K$207K

Recent moves

20 transactions
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