Citigroup Inc.
MX ˙ BMV ˙ US1729674242
SecurityMX:C / Citigroup Inc.
InstitutionTwo Sigma Securities, Llc
Latest Disclosed Ownership20,309 shares
Latest Disclosed Value $ 2,303,244
Two Sigma Securities, Llc ownership in C / Citigroup Inc.

On May 15, 2026 - Two Sigma Securities, Llc filed a 13F-HR form disclosing ownership of 20,309 shares of Citigroup Inc. (MX:C) valued at $2,303,244 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 1,879 shares of Citigroup Inc.. This represents a change in shares of 980.84% during the quarter.

Two Sigma Securities, Llc 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 0 of underlying shares valued at $0 USD and put 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: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 20,309 18,430 980.84 2,303 951.60 0.2675
2026-02-17 2025-12-31 13F CITIGROUP COM NEW 172967424 1,879 -6,686 -78.06 219 -74.80 0.0301
2025-11-14 2025-09-30 13F CITIGROUP COM NEW 172967424 8,565 1,847 27.49 869 52.19 0.1282
2025-08-14 2025-06-30 13F CITIGROUP COM NEW 172967424 6,718 6,718 572 0.0705
2025-05-15 2025-03-31 13F CITIGROUP COM NEW 172967424 0 -11,520 -100.00 0 -100.00
2025-02-14 2024-12-31 13F CITIGROUP COM NEW 172967424 11,520 -15,344 -57.12 811 -51.81 0.1075
2024-11-14 2024-09-30 13F CITIGROUP COM NEW 172967424 26,864 26,864 1,682 0.0284
2024-08-14 2024-06-30 13F CITIGROUP COM NEW 172967424 0 -12,789 -100.00 0 -100.00
2024-05-15 2024-03-31 13F CITIGROUP COM NEW 172967424 12,789 -474,152 -97.37 809 -96.77 0.0078
2024-02-14 2023-12-31 13F CITIGROUP COM NEW 172967424 486,941 353,460 264.80 25,048 356.25 0.2421
2023-11-14 2023-09-30 13F CITIGROUP COM NEW 172967424 133,481 96,271 258.72 5,490 220.49 0.0582
2023-08-14 2023-06-30 13F CITIGROUP COM NEW 172967424 37,210 20,859 127.57 1,713 123.63 0.0255
2023-05-15 2023-03-31 13F CITIGROUP COM NEW 172967424 16,351 4,000 32.39 767 37.28 0.0154
2023-02-14 2022-12-31 13F CITIGROUP COM NEW 172967424 12,351 -12,270 -49.84 559 -45.61 0.0168
2022-11-14 2022-09-30 13F CITIGROUP COM NEW 172967424 24,621 138 0.56 1,026 -8.88 0.0310
2022-08-15 2022-06-30 13F CITIGROUP COM NEW 172967424 24,483 2,320 10.47 1,126 -4.90 0.0399
2022-05-16 2022-03-31 13F CITIGROUP COM NEW 172967424 22,163 7,745 53.72 1,184 35.94 0.0417
2022-02-14 2021-12-31 13F CITIGROUP COM NEW 172967424 14,418 1,908 15.25 871 -0.80 0.0379
2021-11-15 2021-09-30 13F CITIGROUP COM NEW 172967424 12,510 12,510 878 0.0257
2021-08-16 2021-06-30 13F CITIGROUP COM NEW 172967424 0 -3,321 -100.00 0 -100.00
2021-05-17 2021-03-31 13F CITIGROUP COM NEW 172967424 3,321 -4,024 -54.79 242 -46.58 0.0134
2021-02-16 2020-12-31 13F CITIGROUP COM NEW 172967424 7,345 1,904 34.99 453 92.77 0.0107
2020-11-16 2020-09-30 13F CITIGROUP COM NEW 172967424 5,441 -33,611 -86.07 235 -88.23 0.0048
2020-09-10 2020-06-30 13F/A-1 CITIGROUP COM NEW 172967424 39,052 13,206 51.09 1,996 83.29 0.0448
2020-08-14 2020-06-30 13F CITIGROUP COM NEW 172967424 223,552 197,706 11,424 182,302.8954
2020-05-15 2020-03-31 13F CITIGROUP COM NEW 172967424 25,846 21,732 528.25 1,089 231.00 0.0245
2020-02-14 2019-12-31 13F CITIGROUP COM NEW 172967424 4,114 -5,759 -58.33 329 -51.76 0.0022
2019-11-14 2019-09-30 13F CITIGROUP COM NEW 172967424 9,873 9,873 682 0.0062
2019-08-14 2019-06-30 13F CITIGROUP COM NEW 172967424 0 -16,438 -100.00 0 -100.00
2019-05-15 2019-03-31 13F CITIGROUP COM NEW 172967424 16,438 -3,973 -19.46 1,023 -3.76 0.0092
2019-02-14 2018-12-31 13F CITIGROUP COM NEW 172967424 20,411 16,797 464.78 1,063 310.42 0.0130
2018-11-14 2018-09-30 13F CITIGROUP COM NEW 172967424 3,614 -115,192 -96.96 259 -96.74 0.0017
2018-08-14 2018-06-30 13F CITIGROUP COM NEW 172967424 118,806 -44,508 -27.25 7,950 -27.88 0.0396
2018-05-15 2018-03-31 13F CITIGROUP COM NEW 172967424 163,314 156,361 2,248.83 11,024 2,032.30 0.0617
2018-02-14 2017-12-31 13F CITIGROUP COM NEW 172967424 6,953 -1,594 -18.65 517 -16.88 0.0139
2017-11-14 2017-09-30 13F CITIGROUP COM NEW 172967424 8,547 -34,162 -79.99 622 -78.22 0.0568
2017-08-14 2017-06-30 13F CITIGROUP COM NEW 172967424 42,709 -16,757 -28.18 2,856 -19.71 0.5436
2017-05-15 2017-03-31 13F CITIGROUP COM NEW 172967424 59,466 41,417 229.47 3,557 231.50 0.6971
2017-02-14 2016-12-31 13F CITIGROUP COM NEW 172967424 18,049 3,285 22.25 1,073 53.95 0.3587
2016-11-14 2016-09-30 13F CITIGROUP COM NEW 172967424 14,764 -9,932 -40.22 697 -33.43 0.2375
2016-08-15 2016-06-30 13F CITIGROUP COM NEW 172967424 24,696 24,696 0.00 1,047 0.5696
2016-05-16 2016-03-31 13F CITIGROUP COM NEW 172967424 0 -3,939 -100.00 0 -100.00
2016-02-16 2015-12-31 13F CITIGROUP COM NEW 172967424 3,939 3,939 204 0.2448
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
(%)
2025-02-14 2024-12-31 13F CITIGROUP COM NEW Call 0 -100.00 0 -100.00 n/a n/a n/a
2024-11-14 2024-09-30 13F CITIGROUP COM NEW Call 97,500 -42.27 6,104 -43.06 n/a n/a n/a
2024-08-14 2024-06-30 13F CITIGROUP COM NEW Call 168,900 -69.95 10,718 -69.85 n/a n/a n/a
2024-05-15 2024-03-31 13F CITIGROUP COM NEW Call 562,100 7.52 35,547 32.18 n/a n/a n/a
2024-02-14 2023-12-31 13F CITIGROUP COM NEW Call 522,800 10.62 26,893 38.35 n/a n/a n/a
2023-11-14 2023-09-30 13F CITIGROUP COM NEW Call 472,600 163.73 19,438 135.61 n/a n/a n/a
2023-08-14 2023-06-30 13F CITIGROUP COM NEW Call 179,200 58.87 8,250 55.98 n/a n/a n/a
2023-05-15 2023-03-31 13F CITIGROUP COM NEW Call 112,800 -45.85 5,289 -43.86 n/a n/a n/a
2023-02-14 2022-12-31 13F CITIGROUP COM NEW Call 208,300 -31.34 9,421 -25.48 n/a n/a n/a
2022-11-14 2022-09-30 13F CITIGROUP COM NEW Call 303,400 31.46 12,643 19.12 n/a n/a n/a
2022-08-15 2022-06-30 13F CITIGROUP COM NEW Call 230,800 45.62 10,614 25.40 n/a n/a n/a
2022-05-16 2022-03-31 13F CITIGROUP COM NEW Call 158,500 352.86 8,464 300.38 n/a n/a n/a
2022-02-14 2021-12-31 13F CITIGROUP COM NEW Call 35,000 -33.21 2,114 -42.51 n/a n/a n/a
2021-11-15 2021-09-30 13F CITIGROUP COM NEW Call 52,400 -65.91 3,677 -66.19 n/a n/a n/a
2021-08-16 2021-06-30 13F CITIGROUP COM NEW Call 153,700 885.26 10,874 858.06 n/a n/a n/a
2021-05-17 2021-03-31 13F CITIGROUP COM NEW Call 15,600 -78.60 1,135 -74.75 n/a n/a n/a
2021-02-16 2020-12-31 13F CITIGROUP COM NEW Call 72,900 78.68 4,495 155.54 n/a n/a n/a
2020-11-16 2020-09-30 13F CITIGROUP COM NEW Call 40,800 -59.56 1,759 -65.88 n/a n/a n/a
2020-09-10 2020-06-30 13F/A CITIGROUP COM NEW Call 100,900 1,101.19 5,156 1,356.50 n/a n/a n/a
2020-05-15 2020-03-31 13F CITIGROUP COM NEW Call 8,400 -98.62 354 -99.27 n/a n/a n/a
2020-02-14 2019-12-31 13F CITIGROUP COM NEW Call 608,700 212.31 48,629 261.18 n/a n/a n/a
2019-11-14 2019-09-30 13F CITIGROUP CALL Call 194,900 48.33 13,464 46.32 n/a n/a n/a
2019-08-14 2019-06-30 13F CITIGROUP COM NEW Call 131,400 26.96 9,202 42.89 n/a n/a n/a
2019-05-15 2019-03-31 13F CITIGROUP COM NEW Call 103,500 -67.58 6,440 -61.25 n/a n/a n/a
2019-02-14 2018-12-31 13F CITIGROUP COM NEW Call 319,200 -28.17 16,618 -47.87 n/a n/a n/a
2018-11-14 2018-09-30 13F CITIGROUP COM NEW Call 444,400 -20.12 31,881 -14.36 n/a n/a n/a
2018-08-14 2018-06-30 13F CITIGROUP COM NEW Call 556,300 -12.96 37,228 -13.70 n/a n/a n/a
2018-05-15 2018-03-31 13F CITIGROUP COM NEW Call 639,100 482.06 43,139 428.02 n/a n/a n/a
2018-02-14 2017-12-31 13F CITIGROUP COM NEW Call 109,800 8,170 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
(%)
2025-05-15 2025-03-31 13F CITIGROUP COM NEW Put 0 -100.00 0 -100.00 n/a n/a n/a
2025-02-14 2024-12-31 13F CITIGROUP COM NEW Put 24,700 -88.25 1,739 -86.79 n/a n/a n/a
2024-11-14 2024-09-30 13F CITIGROUP COM NEW Put 210,200 -21.42 13,159 -22.49 n/a n/a n/a
2024-08-14 2024-06-30 13F CITIGROUP COM NEW Put 267,500 -39.38 16,976 -39.17 n/a n/a n/a
2024-05-15 2024-03-31 13F CITIGROUP COM NEW Put 441,300 -20.27 27,908 -1.98 n/a n/a n/a
2024-02-14 2023-12-31 13F CITIGROUP COM NEW Put 553,500 -9.65 28,472 13.00 n/a n/a n/a
2023-11-14 2023-09-30 13F CITIGROUP COM NEW Put 612,600 92.82 25,196 72.27 n/a n/a n/a
2023-08-14 2023-06-30 13F CITIGROUP COM NEW Put 317,700 281.85 14,627 274.93 n/a n/a n/a
2023-05-15 2023-03-31 13F CITIGROUP COM NEW Put 83,200 -71.13 3,901 -70.07 n/a n/a n/a
2023-02-14 2022-12-31 13F CITIGROUP COM NEW Put 288,200 -4.25 13,035 3.92 n/a n/a n/a
2022-11-14 2022-09-30 13F CITIGROUP COM NEW Put 301,000 100.93 12,543 82.07 n/a n/a n/a
2022-08-15 2022-06-30 13F CITIGROUP COM NEW Put 149,800 -18.28 6,889 -29.62 n/a n/a n/a
2022-05-16 2022-03-31 13F CITIGROUP COM NEW Put 183,300 642.11 9,788 556.03 n/a n/a n/a
2022-02-14 2021-12-31 13F CITIGROUP COM NEW Put 24,700 -65.60 1,492 -70.39 n/a n/a n/a
2021-11-15 2021-09-30 13F CITIGROUP COM NEW Put 71,800 -50.72 5,039 -51.12 n/a n/a n/a
2021-08-16 2021-06-30 13F CITIGROUP COM NEW Put 145,700 1,145.30 10,308 1,111.28 n/a n/a n/a
2021-05-17 2021-03-31 13F CITIGROUP COM NEW Put 11,700 -88.62 851 -86.58 n/a n/a n/a
2021-02-16 2020-12-31 13F CITIGROUP COM NEW Put 102,800 172.68 6,339 290.09 n/a n/a n/a
2020-11-16 2020-09-30 13F CITIGROUP COM NEW Put 37,700 -54.90 1,625 -61.96 n/a n/a n/a
2020-09-10 2020-06-30 13F/A CITIGROUP COM NEW Put 83,600 26.28 4,272 53.23 n/a n/a n/a
2020-05-15 2020-03-31 13F CITIGROUP COM NEW Put 66,200 -78.22 2,788 -88.52 n/a n/a n/a
2020-02-14 2019-12-31 13F CITIGROUP COM NEW Put 304,000 24,287 n/a n/a n/a
2019-11-14 2019-09-30 13F CITIGROUP COM NEW Put 0 -100.00 0 -100.00 n/a n/a n/a
2019-08-14 2019-06-30 13F CITIGROUP COM NEW Put 158,400 135.71 11,093 165.32 n/a n/a n/a
2019-05-15 2019-03-31 13F CITIGROUP COM NEW Put 67,200 -71.23 4,181 -65.62 n/a n/a n/a
2019-02-14 2018-12-31 13F CITIGROUP COM NEW Put 233,600 -53.60 12,161 -66.33 n/a n/a n/a
2018-11-14 2018-09-30 13F CITIGROUP COM NEW Put 503,400 -45.18 36,114 -41.23 n/a n/a n/a
2018-08-14 2018-06-30 13F CITIGROUP COM NEW Put 918,200 24.76 61,446 23.68 n/a n/a n/a
2018-05-15 2018-03-31 13F CITIGROUP COM NEW Put 736,000 270.59 49,680 236.18 n/a n/a n/a
2018-02-14 2017-12-31 13F CITIGROUP COM NEW Put 198,600 14,778 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.