MSCI Inc.
MX ˙ BMV ˙ US55354G1004
SecurityMX:MSCI / MSCI Inc.
InstitutionMiddleton & Co Inc/ma
Latest Disclosed Ownership12,379 shares
Latest Disclosed Value $ 6,672,405
Middleton & Co Inc/ma reports 0.88% decrease in ownership of MSCI / MSCI Inc.

On May 8, 2026 - Middleton & Co Inc/ma filed a 13F-HR form disclosing ownership of 12,379 shares of MSCI Inc. (MX:MSCI) valued at $6,672,405 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 12,489 shares of MSCI Inc.. This represents a change in shares of -0.88% during the quarter.

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 Inc Cl A COM 55354G100 12,379 -110 -0.88 6,672 -6.88 0.7609
2026-01-29 2025-12-31 13F MSCI Inc Cl A COM 55354G100 12,489 -41 -0.33 7,165 0.79 0.7608
2025-10-29 2025-09-30 13F MSCI Inc Cl A COM 55354G100 12,530 95 0.76 7,110 -0.86 0.7684
2025-08-06 2025-06-30 13F MSCI Inc Cl A COM 55354G100 12,435 89 0.72 7,172 2.72 0.8056
2025-05-09 2025-03-31 13F MSCI Inc Cl A COM 55354G100 12,346 -346 -2.73 6,982 -8.33 0.8156
2025-02-05 2024-12-31 13F MSCI Inc Cl A COM 55354G100 12,692 -11 -0.09 7,615 2.85 0.8414
2024-10-23 2024-09-30 13F MSCI COM 55354G100 12,703 69 0.55 7,405 21.66 0.8182
2024-08-12 2024-06-30 13F MSCI COM 55354G100 12,634 -240 -1.86 6,086 -15.65 0.7071
2024-05-14 2024-03-31 13F MSCI COM 55354G100 12,874 221 1.75 7,215 0.81 0.8321
2024-02-13 2023-12-31 13F MSCI COM 55354G100 12,653 84 0.67 7,157 11.00 0.8927
2023-10-26 2023-09-30 13F MSCI COM 55354G100 12,569 -379 -2.93 6,449 6.12 0.8911
2023-07-28 2023-06-30 13F MSCI COM 55354G100 12,948 -172 -1.31 6,076 -17.25 0.8058
2023-04-28 2023-03-31 13F MSCI COM 55354G100 13,120 -150 -1.13 7,343 18.97 1.0551
2023-02-09 2022-12-31 13F MSCI COM 55354G100 13,270 -805 -5.72 6,173 3.96 0.9147
2022-11-02 2022-09-30 13F MSCI COM 55354G100 14,075 -3,389 -19.41 5,937 -17.52 0.9034
2022-07-21 2022-06-30 13F MSCI COM 55354G100 17,464 -56 -0.32 7,198 -18.30 0.9223
2022-05-12 2022-03-31 13F MSCI COM 55354G100 17,520 29 0.17 8,810 -17.79 0.9403
2022-02-09 2021-12-31 13F MSCI COM 55354G100 17,491 176 1.02 10,717 1.75 1.0441
2021-11-08 2021-09-30 13F MSCI COM 55354G100 17,315 -10 -0.06 10,533 14.04 1.1274
2021-08-13 2021-06-30 13F MSCI COM 55354G100 17,325 -556 -3.11 9,236 23.20 1.0010
2021-05-06 2021-03-31 13F/A-1 MSCI COM 55354G100 17,881 237 1.34 7,497 -4.85 0.8448
2021-05-06 2021-03-31 13F MSCI COM 55354G100 18,366 8,922 0.9335
2021-01-29 2020-12-31 13F MSCI COM 55354G100 17,644 2,721 18.23 7,879 47.99 0.9319
2020-10-30 2020-09-30 13F MSCI COM 55354G100 14,923 7,749 108.02 5,324 122.30 0.7052
2020-07-28 2020-06-30 13F MSCI COM 55354G100 7,174 675 10.39 2,395 27.53 0.3450
2020-04-22 2020-03-31 13F MSCI COM 55354G100 6,499 6,499 1,878 0.3285
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.