Citigroup Inc.
MX ˙ BMV ˙ US1729674242
SecurityMX:C / Citigroup Inc.
InstitutionMariner, LLC
Latest Disclosed Ownership886,672 shares
Latest Disclosed Value $ 100,495,750
Mariner, LLC ownership in C / Citigroup Inc.

On May 13, 2026 - Mariner, LLC filed a 13F-HR form disclosing ownership of 886,672 shares of Citigroup Inc. (MX:C) valued at $100,495,750 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 836,162 shares of Citigroup Inc.. This represents a change in shares of 6.04% during the quarter.

Mariner, LLC has a history of taking positions in derivatives of the underlying security (C) in the form of stock options.

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)
2026-05-13 2026-03-31 13F CITIGROUP COM NEW 172967424 886,672 50,510 6.04 100,496 2.98 0.0968
2026-02-13 2025-12-31 13F CITIGROUP COM NEW 172967424 836,162 102,585 13.98 97,583 31.05 0.1162
2025-11-14 2025-09-30 13F CITIGROUP COM NEW 172967424 733,577 306,338 71.70 74,465 104.78 0.0962
2025-08-14 2025-06-30 13F CITIGROUP COM NEW 172967424 427,239 16,801 4.09 36,364 24.80 0.0525
2025-05-15 2025-03-31 13F CITIGROUP COM NEW 172967424 410,438 6,451 1.60 29,137 2.46 0.0485
2025-02-13 2024-12-31 13F CITIGROUP COM NEW 172967424 403,987 17,350 4.49 28,437 17.52 0.0478
2024-11-13 2024-09-30 13F CITIGROUP COM NEW 172967424 386,637 -16,957 -4.20 24,197 -5.52 0.0429
2024-08-13 2024-06-30 13F CITIGROUP COM NEW 172967424 403,594 2,179 0.54 25,610 0.89 0.0497
2024-05-15 2024-03-31 13F CITIGROUP COM NEW 172967424 401,415 21,341 5.61 25,385 29.84 0.0525
2024-02-14 2023-12-31 13F CITIGROUP COM NEW 172967424 380,074 71,940 23.35 19,551 54.27 0.0464
2023-11-13 2023-09-30 13F CITIGROUP COM NEW 172967424 308,134 -20,519 -6.24 12,673 -16.24 0.0340
2023-08-11 2023-06-30 13F CITIGROUP COM NEW 172967424 328,653 37,590 12.91 15,132 116,292.31 0.0404
2023-05-15 2023-03-31 13F CITIGROUP COM NEW 172967424 291,063 -10,051 -3.34 14 -99.90 0.0396
2023-02-14 2022-12-31 13F CITIGROUP COM NEW 172967424 301,114 27,874 10.20 13,620 19.61 0.0438
2022-11-10 2022-09-30 13F CITIGROUP COM NEW 172967424 273,240 9,540 3.62 11,387 -6.11 0.0455
2022-08-15 2022-06-30 13F CITIGROUP COM NEW 172967424 263,700 86,256 48.61 12,128 28.00 0.0498
2022-05-13 2022-03-31 13F CITIGROUP COM NEW 172967424 177,444 36,548 25.94 9,475 11.35 0.0358
2022-02-14 2021-12-31 13F CITIGROUP COM NEW 172967424 140,896 48,099 51.83 8,509 30.67 0.0360
2021-11-15 2021-09-30 13F CITIGROUP COM NEW 172967424 92,797 10,955 13.39 6,512 12.47 0.0340
2021-08-24 2021-06-30 13F CITIGROUP COM NEW 172967424 81,842 8,216 11.16 5,790 8.10 0.0359
2021-05-07 2021-03-31 13F CITIGROUP COM NEW 172967424 73,626 3,927 5.63 5,356 24.62 0.0374
2021-02-16 2020-12-31 13F CITIGROUP COM NEW 172967424 69,699 5,410 8.42 4,298 55.11 0.0330
2020-11-13 2020-09-30 13F CITIGROUP COM NEW 172967424 64,289 -16,684 -20.60 2,771 -33.04 0.0261
2020-08-14 2020-06-30 13F CITIGROUP COM NEW 172967424 80,973 -305 -0.38 4,138 20.82 0.0415
2020-05-14 2020-03-31 13F CITIGROUP COM NEW 172967424 81,278 1,854 2.33 3,425 -46.02 0.0428
2020-02-13 2019-12-31 13F CITIGROUP COM NEW 172967424 79,424 15,922 25.07 6,345 44.63 0.0659
2019-11-13 2019-09-30 13F CITIGROUP COM NEW 172967424 63,502 -3,680 -5.48 4,387 -6.76 0.0525
2019-08-14 2019-06-30 13F CITIGROUP COM NEW 172967424 67,182 -22,475 -25.07 4,705 -15.65 0.0561
2019-05-15 2019-03-31 13F CITIGROUP COM NEW 172967424 89,657 13,141 17.17 5,578 40.05 0.0795
2019-02-13 2018-12-31 13F CITIGROUP COM NEW 172967424 76,516 18,456 31.79 3,983 -4.37 0.0709
2018-11-14 2018-09-30 13F CITIGROUP COM NEW 172967424 58,060 1,453 2.57 4,165 9.95 0.1071
2018-08-14 2018-06-30 13F CITIGROUP COM NEW 172967424 56,607 22,089 63.99 3,788 62.58 0.1074
2018-05-15 2018-03-31 13F CITIGROUP COM NEW 172967424 34,518 4,192 13.82 2,330 3.28 0.0835
2018-02-09 2017-12-31 13F CITIGROUP COM NEW 172967424 30,326 8,886 41.45 2,256 44.71 0.0873
2017-11-14 2017-09-30 13F CITIGROUP COM NEW 172967424 21,440 1,744 8.85 1,559 18.38 0.0705
2017-08-11 2017-06-30 13F CITIGROUP COM NEW 172967424 19,696 -9,297 -32.07 1,317 -24.09 0.0620
2017-05-15 2017-03-31 13F CITIGROUP COM NEW 172967424 28,993 4,731 19.50 1,735 20.32 0.0756
2017-02-14 2016-12-31 13F CITIGROUP COM NEW 172967424 24,262 -9,524 -28.19 1,442 -9.65 0.0665
2016-11-14 2016-09-30 13F CITIGROUP COM NEW 172967424 33,786 -73 -0.22 1,596 11.22 0.0771
2016-08-12 2016-06-30 13F CITIGROUP COM NEW 172967424 33,859 14,857 78.19 1,435 80.96 0.0776
2016-05-13 2016-03-31 13F CITIGROUP COM NEW 172967424 19,002 -802 -4.05 793 -22.63 0.0471
2016-02-16 2015-12-31 13F CITIGROUP COM NEW 172967424 19,804 3,607 22.27 1,025 27.49 0.0658
2015-11-16 2015-09-30 13F CITIGROUP COM NEW 172967424 16,197 -170 -1.04 804 -11.06 0.0357
2015-08-17 2015-06-30 13F CITIGROUP COM NEW 172967424 16,367 -229 -1.38 904 5.73 0.0419
2015-05-15 2015-03-31 13F CITIGROUP COM NEW 172967424 16,596 958 6.13 855 1.06 0.0727
2015-02-13 2014-12-31 13F CITIGROUP COM NEW 172967424 15,638 1,364 9.56 846 14.32 0.0761
2014-11-13 2014-09-30 13F CITIGROUP COM NEW 172967424 14,274 5,399 60.83 740 77.03 0.0833
2014-08-21 2014-06-30 13F CITIGROUP COM NEW 172967424 8,875 -82 -0.92 418 -1.88 0.0463
2014-05-08 2014-03-31 13F CITIGROUP COM NEW 172967424 8,957 -257 -2.79 426 -11.25 0.0548
2014-02-14 2013-12-31 13F CITIGROUP COM NEW 172967424 9,214 230 2.56 480 10.09 0.0601
2013-11-14 2013-09-30 13F CITIGROUP COM NEW 172967424 8,984 250 2.86 436 4.06 0.0804
2013-08-19 2013-06-30 13F CITIGROUP COM NEW 172967424 8,734 8,734 419 0.0883
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
(%)
2018-08-14 2018-06-30 13F CITIGROUP COM NEW Put 0 -100.00 0 -100.00 n/a n/a n/a
2018-05-15 2018-03-31 13F CITIGROUP COM NEW Put 600 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.