Citigroup Inc.
MX ˙ BMV ˙ US1729674242
SecurityMX:C / Citigroup Inc.
InstitutionMarshall Wace, Llp
Latest Disclosed Ownership527,100 shares
Latest Disclosed Value $ 59,778,411
Marshall Wace, Llp ownership in C / Citigroup Inc.

On May 14, 2026 - Marshall Wace, Llp filed a 13F-HR form disclosing ownership of 527,100 shares of Citigroup Inc. (MX:C) valued at $59,778,411 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 1,072,385 shares of Citigroup Inc.. This represents a change in shares of -50.85% during the quarter.

Marshall Wace, Llp has a history of taking positions in derivatives of the underlying security (C) in the form of stock options. The firm currently holds call options representing 4,000 of underlying shares valued at $453,640 USD and put options representing 995,000 of underlying shares valued at $112,842,950 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:C / Citigroup 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)
2026-05-14 2026-03-31 13F CITIGROUP COMMON STOCK 172967424 527,100 -545,285 -50.85 59,778 -52.23 0.0282
2026-02-13 2025-12-31 13F CITIGROUP COMMON STOCK 172967424 1,072,385 548,984 104.89 125,137 135.55 0.1139
2025-11-13 2025-09-30 13F CITIGROUP COMMON STOCK 172967424 523,401 -763,223 -59.32 53,125 -51.49 0.0539
2025-08-13 2025-06-30 13F CITIGROUP COMMON STOCK 172967424 1,286,624 1,266,383 6,256.52 109,517 7,526.53 0.1234
2025-05-15 2025-03-31 13F CITIGROUP COMMON STOCK 172967424 20,241 -265,062 -92.91 1,437 -92.85 0.0018
2025-02-13 2024-12-31 13F CITIGROUP COMMON STOCK 172967424 285,303 276,427 3,114.32 20,082 3,518.38 0.0241
2024-11-14 2024-09-30 13F CITIGROUP COMMON STOCK 172967424 8,876 -136,783 -93.91 556 -94.00 0.0007
2024-08-14 2024-06-30 13F CITIGROUP COMMON STOCK 172967424 145,659 144,959 20,708.43 9,244 20,906.82 0.0123
2024-05-15 2024-03-31 13F CITIGROUP COMMON STOCK 172967424 700 -156,665 -99.56 44 -99.46 0.0001
2024-02-14 2023-12-31 13F CITIGROUP COMMON STOCK 172967424 157,365 -152,306 -49.18 8,095 -36.45 0.0137
2023-11-14 2023-09-30 13F CITIGROUP COMMON STOCK 172967424 309,671 -5,260,966 -94.44 12,737 -95.03 0.0258
2023-08-14 2023-06-30 13F CITIGROUP COMMON STOCK 172967424 5,570,637 1,914,533 52.37 256,472 49.60 0.5009
2023-05-15 2023-03-31 13F CITIGROUP COMMON STOCK 172967424 3,656,104 -2,662,250 -42.14 171,435 -40.01 0.3643
2023-02-14 2022-12-31 13F CITIGROUP COMMON STOCK 172967424 6,318,354 5,573,782 748.59 285,779 821.12 0.6428
2022-11-14 2022-09-30 13F CITIGROUP COMMON STOCK 172967424 744,572 554,872 292.50 31,025 255.63 0.0680
2022-08-15 2022-06-30 13F CITIGROUP COMMON STOCK 172967424 189,700 119,996 172.15 8,724 134.52 0.0179
2022-05-16 2022-03-31 13F CITIGROUP COMMON STOCK 172967424 69,704 -510,140 -87.98 3,720 -89.38 0.0070
2022-02-14 2021-12-31 13F CITIGROUP COMMON STOCK 172967424 579,844 408,922 239.24 35,018 191.94 0.0647
2021-11-15 2021-09-30 13F CITIGROUP COMMON STOCK 172967424 170,922 -143,944 -45.72 11,995 -46.15 0.0498
2021-08-13 2021-06-30 13F CITIGROUP COMMON STOCK 172967424 314,866 312,881 15,762.27 22,276 15,369.44 0.1085
2021-05-17 2021-03-31 13F CITIGROUP COMMON STOCK 172967424 1,985 -219,896 -99.11 144 -98.95 0.0007
2021-02-16 2020-12-31 13F CITIGROUP COMMON STOCK 172967424 221,881 138,261 165.34 13,680 279.47 0.0741
2020-11-16 2020-09-30 13F CITIGROUP COMMON STOCK 172967424 83,620 -484,249 -85.27 3,605 -87.58 0.0231
2020-08-13 2020-06-30 13F CITIGROUP COMMON STOCK 172967424 567,869 343,032 152.57 29,018 206.42 0.2033
2020-05-15 2020-03-31 13F CITIGROUP COMMON STOCK 172967424 224,837 140,498 166.59 9,470 40.55 0.0946
2020-02-14 2019-12-31 13F CITIGROUP COMMON STOCK 172967424 84,339 -12,934 -13.30 6,738 0.28 0.0463
2019-11-14 2019-09-30 13F CITIGROUP COMMON STOCK 172967424 97,273 -56,528 -36.75 6,719 -37.62 0.0528
2019-08-14 2019-06-30 13F CITIGROUP COMMON STOCK 172967424 153,801 -16,870 -9.88 10,771 1.43 0.0886
2019-05-29 2019-03-31 13F/A-1 CITIGROUP COMMON STOCK 172967424 170,671 -610,757 -78.16 10,619 -73.90 0.0998
2019-05-14 2019-03-31 13F CITIGROUP COMMON STOCK 172967424 170,671 -610,757 10,619
2019-02-14 2018-12-31 13F CITIGROUP COMMON STOCK 172967424 781,428 691,354 767.54 40,680 529.53 0.4153
2018-12-06 2018-09-30 13F/A-1 CITIGROUP COMMON STOCK 172967424 90,074 -201,278 -69.08 6,462 -66.86 0.0550
2018-11-14 2018-09-30 13F CITIGROUP COMMON STOCK 172967424 90,074 -201,278 6,462
2018-08-14 2018-06-30 13F CITIGROUP COMMON STOCK 172967424 291,352 226,277 347.72 19,497 343.82 0.2917
2018-05-15 2018-03-31 13F CITIGROUP COMMON STOCK 172967424 65,075 65,075 -77.66 4,393 -77.47 0.1821
2017-11-13 2017-09-30 13F CITIGROUP COMMON STOCK 172967424 0 -792,420 -100.00 0 -100.00
2017-08-04 2017-06-30 13F CITIGROUP COMMON STOCK 172967424 792,420 515,600 186.26 53,092 219.66 2.3385
2017-05-12 2017-03-31 13F CITIGROUP COMMON STOCK 172967424 276,820 -1,776,836 -86.52 16,609 -86.39 0.8016
2017-02-10 2016-12-31 13F CITIGROUP COMMON STOCK 172967424 2,053,656 320,256 18.48 122,049 49.08 0.8024
2016-11-10 2016-09-30 13F CITIGROUP COMMON STOCK 172967424 1,733,400 1,042,422 150.86 81,868 179.50 0.5821
2016-08-12 2016-06-30 13F CITIGROUP COMMON STOCK 172967424 690,978 -1,469,386 -68.02 29,291 -67.52 0.2463
2016-05-13 2016-03-31 13F CITIGROUP COMMON STOCK 172967424 2,160,364 306,247 16.52 90,195 -6.00 0.8691
2016-02-10 2015-12-31 13F CITIGROUP COMMON STOCK 172967424 1,854,117 613,683 49.47 95,950 55.92 0.9003
2015-11-12 2015-09-30 13F CITIGROUP COMMON STOCK 172967424 1,240,434 13,430 1.09 61,538 -9.21 0.7560
2015-08-14 2015-06-30 13F CITIGROUP COMMON STOCK 172967424 1,227,004 -567,102 -31.61 67,779 -26.67 0.8841
2015-05-11 2015-03-31 13F CITIGROUP COMMON STOCK 172967424 1,794,106 563,605 45.80 92,432 38.82 1.2043
2015-02-17 2014-12-31 13F CITIGROUP COMMON STOCK 172967424 1,230,501 322,235 35.48 66,582 41.46 0.8790
2014-11-13 2014-09-30 13F CITIGROUP COMMON STOCK 172967424 908,266 291,654 47.30 47,067 62.07 0.6791
2014-08-14 2014-06-30 13F CITIGROUP COMMON STOCK 172967424 616,612 -226,287 -26.85 29,042 -27.62 0.4275
2014-05-14 2014-03-31 13F CITIGROUP COMMON STOCK 172967424 842,899 -939,461 -52.71 40,122 -53.07 0.7297
2013-08-06 2013-06-30 13F CITIGROUP COMMON STOCK 172967424 1,782,360 1,782,360 85,500 5.1174
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
(%)
2026-05-14 2026-03-31 13F CITIGROUP EQUITY OPTION Call 4,000 454 n/a n/a n/a
2026-02-13 2025-12-31 13F CITIGROUP EQUITY OPTION Call 0 -100.00 0 -100.00 n/a n/a n/a
2025-11-13 2025-09-30 13F CITIGROUP EQUITY OPTION Call 3,600 365 n/a n/a n/a
2025-05-15 2025-03-31 13F CITIGROUP EQUITY OPTION Call 0 -100.00 0 -100.00 n/a n/a n/a
2025-02-13 2024-12-31 13F CITIGROUP EQUITY OPTION Call 2,200 155 n/a n/a n/a
2024-05-15 2024-03-31 13F CITIGROUP EQUITY OPTION Call 0 -100.00 0 -100.00 n/a n/a n/a
2024-02-14 2023-12-31 13F CITIGROUP EQUITY OPTION Call 130,000 6,687 n/a n/a n/a
2023-11-14 2023-09-30 13F CITIGROUP EQUITY OPTION Call 0 -100.00 0 -100.00 n/a n/a n/a
2023-08-14 2023-06-30 13F CITIGROUP EQUITY OPTION Call 361,800 3,482.18 16,657 3,421.56 n/a n/a n/a
2023-05-15 2023-03-31 13F CITIGROUP EQUITY OPTION Call 10,100 -94.36 474 -94.16 n/a n/a n/a
2023-02-14 2022-12-31 13F CITIGROUP EQUITY OPTION Call 179,000 -21.39 8,096 -14.67 n/a n/a n/a
2022-11-14 2022-09-30 13F CITIGROUP EQUITY OPTION Call 227,700 1,027.23 9,488 922.41 n/a n/a n/a
2022-08-15 2022-06-30 13F July 22 Calls on C US at 49.5, American EQUITY OPTION Call 20,200 20.24 928 3.46 n/a n/a n/a
2022-05-16 2022-03-31 13F May 22 Calls on C US at 57.5, American EQUITY OPTION Call 16,800 897 n/a n/a n/a
Disclosed Put 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
(%)
2026-05-14 2026-03-31 13F CITIGROUP EQUITY OPTION Put 995,000 112,843 n/a n/a n/a
2026-02-13 2025-12-31 13F CITIGROUP EQUITY OPTION Put 0 -100.00 0 -100.00 n/a n/a n/a
2025-11-13 2025-09-30 13F CITIGROUP EQUITY OPTION Put 16,600 -2.92 1,685 15.74 n/a n/a n/a
2025-08-13 2025-06-30 13F CITIGROUP EQUITY OPTION Put 17,100 271.74 1,456 346.32 n/a n/a n/a
2025-05-15 2025-03-31 13F CITIGROUP EQUITY OPTION Put 4,600 17.95 327 18.98 n/a n/a n/a
2025-02-13 2024-12-31 13F CITIGROUP EQUITY OPTION Put 3,900 -99.27 275 -99.18 n/a n/a n/a
2024-11-14 2024-09-30 13F CITIGROUP EQUITY OPTION Put 532,800 -46.06 33,353 -46.79 n/a n/a n/a
2024-08-14 2024-06-30 13F CITIGROUP EQUITY OPTION Put 987,800 -25.79 62,686 -25.94 n/a n/a n/a
2024-05-15 2024-03-31 13F CITIGROUP EQUITY OPTION Put 1,331,100 568.22 84,645 726.12 n/a n/a n/a
2024-02-14 2023-12-31 13F CITIGROUP EQUITY OPTION Put 199,200 1,815.38 10,247 2,299.53 n/a n/a n/a
2023-11-14 2023-09-30 13F CITIGROUP EQUITY OPTION Put 10,400 -98.46 428 -98.63 n/a n/a n/a
2023-08-14 2023-06-30 13F CITIGROUP EQUITY OPTION Put 676,000 -45.98 31,123 -46.96 n/a n/a n/a
2023-05-15 2023-03-31 13F CITIGROUP EQUITY OPTION Put 1,251,500 481.01 58,683 502.36 n/a n/a n/a
2023-02-14 2022-12-31 13F CITIGROUP EQUITY OPTION Put 215,400 13.01 9,743 22.63 n/a n/a n/a
2022-11-14 2022-09-30 13F CITIGROUP EQUITY OPTION Put 190,600 5,675.76 7,944 5,126.32 n/a n/a n/a
2022-08-15 2022-06-30 13F July 22 Puts on C US at 47.5, American EQUITY OPTION Put 3,300 3.12 152 -11.11 n/a n/a n/a
2022-05-16 2022-03-31 13F August 22 Puts on C US at 52.5, American EQUITY OPTION Put 3,200 171 n/a n/a n/a
2022-02-14 2021-12-31 13F October 21 Puts on C US at 71, American EQUITY OPTION Put 0 -100.00 0 -100.00 n/a n/a n/a
2021-11-15 2021-09-30 13F October 21 Puts on C US at 71, American EQUITY OPTION Put 2,700 440.00 189 440.00 n/a n/a n/a
2021-08-13 2021-06-30 13F September 21 Puts on C US at 75, American EQUITY OPTION Put 500 -37.50 35 -39.66 n/a n/a n/a
2021-05-17 2021-03-31 13F April 21 Puts on C US at 73, American EQUITY OPTION Put 800 58 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.