Citigroup Inc.
MX ˙ BMV ˙ US1729674242
SecurityMX:C / Citigroup Inc.
InstitutionTrexquant Investment LP
Latest Disclosed Ownership1,024,876 shares
Latest Disclosed Value $ 116,231,187
Trexquant Investment LP ownership in C / Citigroup Inc.

On May 15, 2026 - Trexquant Investment LP filed a 13F-HR form disclosing ownership of 1,024,876 shares of Citigroup Inc. (MX:C) valued at $116,231,187 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 84,965 shares of Citigroup Inc.. This represents a change in shares of 1,106.23% during the quarter.

Trexquant Investment LP 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 600 of underlying shares valued at $68,046 USD and put options representing 2,200 of underlying shares valued at $249,502 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)
2026-05-15 2026-03-31 13F CITIGROUP COM NEW 172967424 1,024,876 939,911 1,106.23 116,231 1,072.39 0.8352
2026-02-17 2025-12-31 13F CITIGROUP COM NEW 172967424 84,965 -49,371 -36.75 9,915 -27.29 0.0884
2025-11-14 2025-09-30 13F CITIGROUP COM NEW 172967424 134,336 134,336 13,635 0.1404
2025-08-12 2025-06-30 13F CITIGROUP COM NEW 172967424 0 -32,955 -100.00 0 -100.00
2025-05-14 2025-03-31 13F CITIGROUP COM NEW 172967424 32,955 32,955 2,339 0.0272
2025-02-12 2024-12-31 13F CITIGROUP COM NEW 172967424 0 -105,991 -100.00 0 -100.00
2024-11-12 2024-09-30 13F CITIGROUP COM NEW 172967424 105,991 -1,964 -1.82 6,635 -3.14 0.0840
2024-08-13 2024-06-30 13F CITIGROUP COM NEW 172967424 107,955 107,955 6,851 0.1045
2024-02-09 2023-12-31 13F CITIGROUP COM NEW 172967424 0 -386,553 -100.00 0 -100.00
2023-11-13 2023-09-30 13F CITIGROUP COM NEW 172967424 386,553 156,071 67.72 15,899 49.83 0.3989
2023-08-11 2023-06-30 13F CITIGROUP COM NEW 172967424 230,482 215,271 1,415.23 10,611 1,388.22 0.2781
2023-05-15 2023-03-31 13F CITIGROUP COM NEW 172967424 15,211 3,495 29.83 713 34.78 0.0196
2023-02-13 2022-12-31 13F CITIGROUP COM NEW 172967424 11,716 -399,990 -97.15 530 -96.92 0.0150
2022-11-14 2022-09-30 13F CITIGROUP COM NEW 172967424 411,706 330,030 404.07 17,156 356.76 0.6033
2022-08-11 2022-06-30 13F CITIGROUP COM NEW 172967424 81,676 70,674 642.37 3,756 538.78 0.1683
2022-05-13 2022-03-31 13F CITIGROUP COM NEW 172967424 11,002 -322,664 -96.70 588 -97.08 0.0276
2022-02-14 2021-12-31 13F CITIGROUP COM NEW 172967424 333,666 247,825 288.70 20,150 234.50 1.2448
2021-11-12 2021-09-30 13F CITIGROUP COM NEW 172967424 85,841 29,933 53.54 6,024 52.31 0.4786
2021-08-12 2021-06-30 13F CITIGROUP COM NEW 172967424 55,908 9,129 19.52 3,955 16.22 0.3337
2021-05-13 2021-03-31 13F CITIGROUP COM NEW 172967424 46,779 13,864 42.12 3,403 67.64 0.3122
2021-02-11 2020-12-31 13F CITIGROUP COM NEW 172967424 32,915 -177,319 -84.34 2,030 -77.60 0.2150
2020-11-06 2020-09-30 13F CITIGROUP COM NEW 172967424 210,234 210,234 9,063 0.5832
2020-08-07 2020-06-30 13F CITIGROUP COM NEW 172967424 0 -60,533 -100.00 0 -100.00
2020-05-08 2020-03-31 13F CITIGROUP COM NEW 172967424 60,533 60,533 2,550 0.1851
2019-08-09 2019-06-30 13F CITIGROUP COM NEW 172967424 0 -56,133 -100.00 0 -100.00
2019-05-13 2019-03-31 13F CITIGROUP COM NEW 172967424 56,133 56,133 3,493 0.2481
2018-08-07 2018-06-30 13F CITIGROUP COM NEW 172967424 0 -84,999 -100.00 0 -100.00
2018-05-03 2018-03-31 13F CITIGROUP COM NEW 172967424 84,999 84,999 5,737 0.3999
2018-02-08 2017-12-31 13F CITIGROUP COM NEW 172967424 0 -10,448 -100.00 0 -100.00
2017-11-09 2017-09-30 13F CITIGROUP COM NEW 172967424 10,448 10,448 760 0.1915
2017-08-01 2017-06-30 13F CITIGROUP COM NEW 172967424 0 -18,500 -100.00 0 -100.00
2017-05-08 2017-03-31 13F CITIGROUP COM NEW 172967424 18,500 -23,400 -55.85 1,107 -55.54 0.1420
2017-02-10 2016-12-31 13F CITIGROUP COM NEW 172967424 41,900 37,300 810.87 2,490 1,047.47 0.3939
2016-11-10 2016-09-30 13F CITIGROUP COM NEW 172967424 4,600 4,600 217 0.0484
2016-08-10 2016-06-30 13F CITIGROUP COM NEW 172967424 0 -18,200 -100.00 0 -100.00
2016-05-11 2016-03-31 13F CITIGROUP COM NEW 172967424 18,200 6,200 51.67 760 22.38 0.0890
2016-02-10 2015-12-31 13F CITIGROUP COM NEW 172967424 12,000 12,000 0.00 621 0.0547
2015-08-12 2015-06-30 13F CITIGROUP COM NEW 172967424 0 -17,500 -100.00 0 -100.00
2015-05-13 2015-03-31 13F CITIGROUP COM NEW 172967424 17,500 17,500 901 0.0920
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
(%)
2026-05-15 2026-03-31 13F CITIGROUP COM NEW Call 600 68 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
(%)
2026-05-15 2026-03-31 13F CITIGROUP COM NEW Put 2,200 250 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.