MSCI Inc.
US ˙ NYSE ˙ US55354G1004

SecurityMSCI / MSCI Inc.
InstitutionAsset Management One Co., Ltd.
Latest Disclosed Ownership32,830 shares
Latest Disclosed Value $ 17,695,698
Asset Management One Co., Ltd. reports 1.34% increase in ownership of MSCI / MSCI Inc.

On May 8, 2026 - Asset Management One Co., Ltd. filed a 13F-HR form disclosing ownership of 32,830 shares of MSCI Inc. (US:MSCI) valued at $17,695,698 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 27, 2026 disclosing 32,395 shares of MSCI Inc.. This represents a change in shares of 1.34% during the quarter. The current value of the position is $20,317,502 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-08 2026-03-31 13F MSCI COM 55354G100 32,830 435 1.34 17,696 -6.73 0.0522
2026-01-27 2025-12-31 13F MSCI COM 55354G100 32,395 -1,227 -3.65 18,973 -0.55 0.0528
2025-10-22 2025-09-30 13F MSCI COM 55354G100 33,622 290 0.87 19,077 -0.76 0.0553
2025-07-31 2025-06-30 13F MSCI COM 55354G100 33,332 322 0.98 19,224 2.98 0.0603
2025-04-23 2025-03-31 13F MSCI COM 55354G100 33,010 2,522 8.27 18,667 0.44 0.0646
2025-01-30 2024-12-31 13F MSCI COM 55354G100 30,488 -27 -0.09 18,585 4.48 0.0639
2024-10-30 2024-09-30 13F MSCI COM 55354G100 30,515 821 2.76 17,788 24.35 0.0633
2024-07-18 2024-06-30 13F MSCI COM 55354G100 29,694 -6,916 -18.89 14,305 -30.28 0.0547
2024-05-02 2024-03-31 13F MSCI COM 55354G100 36,610 -3,116 -7.84 20,518 -9.44 0.0791
2024-01-24 2023-12-31 13F MSCI COM 55354G100 39,726 -1,326 -3.23 22,658 7.58 0.0912
2023-10-19 2023-09-30 13F MSCI COM 55354G100 41,052 1,291 3.25 21,063 12.88 0.0938
2023-07-31 2023-06-30 13F MSCI COM 55354G100 39,761 -2,630 -6.20 18,659 -21.35 0.0790
2023-04-25 2023-03-31 13F MSCI COM 55354G100 42,391 364 0.87 23,726 19.74 0.1075
2023-02-06 2022-12-31 13F MSCI COM 55354G100 42,027 -1,298 -3.00 19,813 8.42 0.0966
2022-11-04 2022-09-30 13F MSCI COM 55354G100 43,325 891 2.10 18,274 4.49 0.0930
2022-07-29 2022-06-30 13F MSCI COM 55354G100 42,434 -3,442 -7.50 17,489 -24.19 0.0821
2022-05-13 2022-03-31 13F MSCI COM 55354G100 45,876 219 0.48 23,070 -17.79 0.0901
2022-02-09 2021-12-31 13F MSCI COM 55354G100 45,657 1,378 3.11 28,063 4.18 0.0978
2021-11-02 2021-09-30 13F MSCI COM 55354G100 44,279 -507 -1.13 26,936 12.83 0.1033
2021-08-03 2021-06-30 13F MSCI COM 55354G100 44,786 -2,010 -4.30 23,874 21.68 0.0888
2021-05-14 2021-03-31 13F MSCI COM 55354G100 46,796 -5,335 -10.23 19,620 -13.55 0.0779
2021-02-12 2020-12-31 13F MSCI COM 55354G100 52,131 17 0.03 22,694 22.03 0.0935
2020-11-13 2020-09-30 13F MSCI COM 55354G100 52,114 -2,348 -4.31 18,597 2.29 0.0855
2020-08-14 2020-06-30 13F MSCI COM 55354G100 54,462 -2,970 -5.17 18,180 9.56 0.0894
2020-05-14 2020-03-31 13F MSCI COM 55354G100 57,432 -1,575 -2.67 16,593 8.92 0.0969
2020-02-14 2019-12-31 13F MSCI COM 55354G100 59,007 -9,701 -14.12 15,234 1.85 0.0687
2019-11-14 2019-09-30 13F MSCI COM 55354G100 68,708 8,824 14.74 14,958 4.59 0.0721
2019-08-14 2019-06-30 13F MSCI COM 55354G100 59,884 -9,201 -13.32 14,301 4.08 0.0702
2019-05-15 2019-03-31 13F MSCI COM 55354G100 69,085 -114,637 -62.40 13,740 -49.09 0.0743
2019-02-13 2018-12-31 13F MSCI COM 55354G100 183,722 -5,673 -3.00 26,989 -19.82 0.0643
2018-11-14 2018-09-30 13F MSCI COM 55354G100 189,395 17,324 10.07 33,659 18.37 0.0691
2018-08-14 2018-06-30 13F MSCI COM 55354G100 172,071 -3,033 -1.73 28,436 8.65 0.0621
2018-05-14 2018-03-31 13F MSCI COM 55354G100 175,104 10,178 6.17 26,173 25.44 0.0589
2018-02-14 2017-12-31 13F MSCI COM 55354G100 164,926 21,487 14.98 20,865 24.43 0.0460
2017-11-14 2017-09-30 13F MSCI COM 55354G100 143,439 1,685 1.19 16,769 14.82 0.0394
2017-08-14 2017-06-30 13F MSCI COM 55354G100 141,754 125 0.09 14,605 6.13 0.0373
2017-05-11 2017-03-31 13F MSCI COM 55354G100 141,629 -12,431 -8.07 13,761 13.41 0.0361
2017-05-02 2016-12-31 13F/A-1 MSCI COM 55354G100 154,060 88,366 134.51 12,134 121.14 0.0310
2017-02-13 2016-12-31 13F MSCI COM 55354G100 154,060 12,134
2016-11-07 2016-09-30 13F MSCI Com 55354G100 65,694 -5,866 -8.20 5,487 2.31 0.0815
2016-08-03 2016-06-30 13F MSCI Com 55354G100 71,560 11,491 19.13 5,363 22.05 0.0805
2016-05-05 2016-03-31 13F MSCI Com 55354G100 60,069 9,383 18.51 4,394 19.01 0.0641
2016-01-28 2015-12-31 13F MSCI COM 55354G100 50,686 -15,548 -23.47 3,692 -4.28 0.0551
2015-11-12 2015-09-30 13F MSCI COM 55354G100 66,234 -10,770 -13.99 3,857 -18.94 0.0587
2015-08-06 2015-06-30 13F MSCI COM 55354G100 77,004 -13,807 -15.20 4,758 -13.99 0.0659
2015-05-11 2015-03-31 13F MSCI COM 55354G100 90,811 -5,328 -5.54 5,532 19.64 0.0683
2015-02-09 2014-12-31 13F MSCI COM 55354G100 96,139 70,625 276.81 4,624 285.98 0.0600
2014-11-05 2014-09-30 13F MSCI COM 55354G100 25,514 25,514 1,198 0.0165
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.