MSCI Inc.
MX ˙ BMV ˙ US55354G1004
SecurityMX:MSCI / MSCI Inc.
InstitutionSG Americas Securities, LLC
Latest Disclosed Ownership147,525 shares
Latest Disclosed Value $ 79,517
SG Americas Securities, LLC ownership in MSCI / MSCI Inc.

On April 16, 2026 - SG Americas Securities, LLC filed a 13F-HR form disclosing ownership of 147,525 shares of MSCI Inc. (MX:MSCI) valued at $79,517 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 9, 2026 disclosing 69,426 shares of MSCI Inc.. This represents a change in shares of 112.49% during the quarter.

SG Americas Securities, LLC has a history of taking positions in derivatives of the underlying security (MSCI) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

MX:MSCI / MSCI Inc. Historical Put/Call Ratio
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)
2026-04-16 2026-03-31 13F MSCI INC COM COM 55354G100 147,525 78,099 112.49 80 102.56 0.0854
2026-01-09 2025-12-31 13F MSCI INC COM COM 55354G100 69,426 65,105 1,506.71 40 1,850.00 0.0509
2025-10-23 2025-09-30 13F MSCI INC COM COM 55354G100 4,321 1,036 31.54 2 100.00 0.0083
2025-08-08 2025-06-30 13F MSCI INC COM COM 55354G100 3,285 -49,099 -93.73 2 -96.55 0.0079
2025-04-15 2025-03-31 13F MSCI INC COM COM 55354G100 52,384 52,067 16,424.92 30 0.0972
2025-01-17 2024-12-31 13F MSCI INC COM COM 55354G100 317 -1,548 -83.00 0 -100.00 0.0008
2024-10-03 2024-09-30 13F MSCI INC COM COM 55354G100 1,865 -12,233 -86.77 1 -83.33 0.0039
2024-07-12 2024-06-30 13F MSCI INC COM COM 55354G100 14,098 -33,028 -70.08 7 -76.92 0.0396
2024-05-06 2024-03-31 13F MSCI INC COM COM 55354G100 47,126 23,486 99.35 26 100.00 0.1271
2024-01-12 2023-12-31 13F MSCI INC COM COM 55354G100 23,640 -11,325 -32.39 13 -23.53 0.1247
2023-10-13 2023-09-30 13F MSCI INC COM COM 55354G100 34,965 25,136 255.73 18 325.00 0.2051
2023-07-10 2023-06-30 13F MSCI INC COM COM 55354G100 9,829 4,491 84.13 5 100.00 0.0349
2023-04-28 2023-03-31 13F MSCI INC COM COM 55354G100 5,338 1,420 36.24 3 100.00 0.0347
2023-02-02 2022-12-31 13F MSCI INC COM COM 55354G100 3,918 358 10.06 2 -99.93 0.0222
2022-10-31 2022-09-30 13F MSCI INC COM COM 55354G100 3,560 126 3.67 1,502 6.15 0.0186
2022-07-29 2022-06-30 13F MSCI INC COM COM 55354G100 3,434 -6,487 -65.39 1,415 -71.64 0.0151
2022-04-29 2022-03-31 13F MSCI INC COM COM 55354G100 9,921 5,326 115.91 4,989 77.23 0.0366
2022-02-07 2021-12-31 13F MSCI INC COM COM 55354G100 4,595 -297 -6.07 2,815 -5.41 0.0153
2021-11-01 2021-09-30 13F MSCI INC COM COM 55354G100 4,892 -22,954 -82.43 2,976 -79.95 0.0140
2021-08-12 2021-06-30 13F MSCI INC COM COM 55354G100 27,846 15,601 127.41 14,844 189.13 0.0691
2021-05-13 2021-03-31 13F MSCI INC COM COM 55354G100 12,245 9,160 296.92 5,134 272.57 0.0269
2021-02-04 2020-12-31 13F MSCI INC COM COM 55354G100 3,085 -632 -17.00 1,378 3.92 0.0074
2020-11-09 2020-09-30 13F MSCI INC COM COM 55354G100 3,717 1,093 41.65 1,326 51.37 0.0084
2020-07-20 2020-06-30 13F MSCI INC COM COM 55354G100 2,624 -2,501 -48.80 876 -40.85 0.0073
2020-04-30 2020-03-31 13F MSCI INC COM COM 55354G100 5,125 -287 -5.30 1,481 6.01 0.0139
2020-01-28 2019-12-31 13F MSCI INC COM COM 55354G100 5,412 -6,946 -56.21 1,397 -48.09 0.0127
2019-11-04 2019-09-30 13F MSCI INC COM COM 55354G100 12,358 975 8.57 2,691 -0.99 0.0221
2019-07-29 2019-06-30 13F MSCI INC COM COM 55354G100 11,383 -9,030 -44.24 2,718 -33.04 0.0187
2019-04-29 2019-03-31 13F MSCI INC COM COM 55354G100 20,413 9,085 80.20 4,059 143.05 0.0374
2019-01-31 2018-12-31 13F MSCI INC COM COM 55354G100 11,328 -6,076 -34.91 1,670 -45.92 0.0146
2018-11-06 2018-09-30 13F MSCI INC COM COM 55354G100 17,404 9,943 133.27 3,088 150.24 0.0229
2018-08-07 2018-06-30 13F MSCI INC COM COM 55354G100 7,461 -12,669 -62.94 1,234 -58.99 0.0111
2018-05-03 2018-03-31 13F MSCI INC COM COM 55354G100 20,130 -2,010 -9.08 3,009 7.39 0.0241
2018-01-24 2017-12-31 13F MSCI INC COM COM 55354G100 22,140 18,329 480.95 2,802 528.25 0.0261
2017-11-07 2017-09-30 13F MSCI INC COM COM 55354G100 3,811 -23,720 -86.16 446 -84.27 0.0039
2017-08-03 2017-06-30 13F MSCI INC COM COM 55354G100 27,531 14,859 117.26 2,835 130.11 0.0255
2017-05-10 2017-03-31 13F MSCI INC COM COM 55354G100 12,672 -322 -2.48 1,232 20.31 0.0109
2017-02-08 2016-12-31 13F MSCI INC COM COM 55354G100 12,994 2,403 22.69 1,024 15.19 0.0086
2017-02-08 2016-09-30 13F/A-1 MSCI INC COM COM 55354G100 10,591 -20,266 -65.68 889 -62.65 0.0093
2016-11-08 2016-09-30 13F MSCI INC COM COM 55354G100 10,591 889
2016-08-03 2016-06-30 13F MSCI INC COM COM 55354G100 30,857 -12,305 -28.51 2,380 -25.56 0.0169
2016-05-12 2016-03-31 13F MSCI INC COM COM 55354G100 43,162 18,634 75.97 3,197 80.72 0.0231
2016-02-12 2015-12-31 13F MSCI INC COM COM 55354G100 24,528 22,084 903.60 1,769 1,120.00 0.0126
2015-11-09 2015-09-30 13F MSCI INC COM COM 55354G100 2,444 -8,628 -77.93 145 -78.71 0.0009
2015-08-06 2015-06-30 13F MSCI INC COM COM 55354G100 11,072 -15,274 -57.97 681 -57.83 0.0045
2015-05-13 2015-03-31 13F MSCI INC COM COM 55354G100 26,346 16,235 160.57 1,615 236.46 0.0096
2015-02-12 2014-12-31 13F MSCI INC COM COM 55354G100 10,111 4,445 78.45 480 80.45 0.0024
2014-11-13 2014-09-30 13F MSCI INC COM COM 55354G100 5,666 -39,360 -87.42 266 -87.11 0.0016
2014-08-13 2014-06-30 13F MSCI INC COM COM 55354G100 45,026 31,114 223.65 2,064 245.15 0.0120
2014-05-14 2014-03-31 13F MSCI INC COM COM 55354G100 13,912 -8,344 -37.49 598 -38.54 0.0026
2014-02-12 2013-12-31 13F MSCI INC COM COM 55354G100 22,256 -36,197 -61.92 973 -58.65 0.0041
2013-11-12 2013-09-30 13F MSCI INC COM COM 55354G100 58,453 44,755 326.73 2,353 416.01 0.0097
2013-08-13 2013-06-30 13F MSCI INC COM COM 55354G100 13,698 13,698 456 0.0022
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-04-16 2026-03-31 13F MSCI OPT Call 0 -100.00 0 n/a n/a n/a
2026-01-09 2025-12-31 13F MSCI OPT Call 47,500 2 n/a n/a n/a
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.