Nordic American Tankers Limited
US ˙ NYSE ˙ BMG657731060

SecurityNAT / Nordic American Tankers Limited
InstitutionCitigroup Inc
Latest Disclosed Ownership145,334 shares
Latest Disclosed Value $ 851,657
Citigroup Inc ownership in NAT / Nordic American Tankers Limited

On May 11, 2026 - Citigroup Inc filed a 13F-HR form disclosing ownership of 145,334 shares of Nordic American Tankers Limited (US:NAT) valued at $851,657 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 275,864 shares of Nordic American Tankers Limited. This represents a change in shares of -47.32% during the quarter. The current value of the position is $758,643 USD.

Citigroup Inc has a history of taking positions in derivatives of the underlying security (NAT) 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.

NAT / Nordic American Tankers Limited 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)
2026-05-11 2026-03-31 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 145,334 -130,530 -47.32 852 -10.23 0.0004
2026-02-13 2025-12-31 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 275,864 255,458 1,251.88 949 1,381.25 0.0004
2025-11-10 2025-09-30 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 20,406 -65,372 -76.21 64 -71.56 0.0000
2025-08-11 2025-06-30 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 85,778 -70,259 -45.03 226 -41.25 0.0001
2025-05-12 2025-03-31 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 156,037 -25,933 -14.25 384 -15.64 0.0002
2025-02-12 2024-12-31 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 181,970 15,166 9.09 455 -25.82 0.0003
2024-11-12 2024-09-30 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 166,804 103,943 165.35 612 144.80 0.0004
2024-08-12 2024-06-30 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 62,861 9,444 17.68 250 19.62 0.0002
2024-05-10 2024-03-31 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 53,417 11,151 26.38 209 18.08 0.0001
2024-02-09 2023-12-31 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 42,266 15,373 57.16 178 60.91 0.0001
2023-12-06 2023-09-30 13F/A-1 NORDIC AMERICAN TANKERS LIMI COM G65773106 26,893 -43,848 -61.98 111 -57.53 0.0001
2023-11-09 2023-09-30 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 26,893 -43,848 111 0.0000
2023-08-10 2023-06-30 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 70,741 61,347 653.04 260 600.00 0.0002
2023-05-11 2023-03-31 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 9,394 -1,384 -12.84 37 15.63 0.0000
2023-02-09 2022-12-31 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 10,778 -3,284 -23.35 33 -15.79 0.0000
2022-11-10 2022-09-30 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 14,062 -56,117 -79.96 38 -74.50 0.0000
2022-08-10 2022-06-30 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 70,179 37,394 114.06 149 112.86 0.0001
2022-05-12 2022-03-31 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 32,785 -21,724 -39.85 70 -23.91 0.0000
2022-02-10 2021-12-31 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 54,509 37,127 213.59 92 109.09 0.0000
2021-11-10 2021-09-30 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 17,382 9,704 126.39 44 76.00 0.0000
2021-08-10 2021-06-30 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 7,678 -63,378 -89.19 25 -89.18 0.0000
2021-05-13 2021-03-31 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 71,056 42,053 145.00 231 168.60 0.0001
2021-02-11 2020-12-31 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 29,003 21,454 284.20 86 230.77 0.0001
2020-11-12 2020-09-30 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 7,549 -13,565 -64.25 26 -69.77 0.0000
2020-08-12 2020-06-30 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 21,114 -378,736 -94.72 86 -95.25 0.0001
2020-05-12 2020-03-31 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 399,850 371,610 1,315.90 1,812 1,203.60 0.0016
2020-02-12 2019-12-31 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 28,240 8,518 43.19 139 223.26 0.0001
2019-11-08 2019-09-30 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 19,722 -23,832 -54.72 43 -58.25 0.0000
2019-08-12 2019-06-30 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 43,554 -2,790 -6.02 103 9.57 0.0001
2019-05-13 2019-03-31 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 46,344 -3,942 -7.84 94 -6.93 0.0001
2019-02-12 2018-12-31 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 50,286 -30 -0.06 101 -3.81 0.0001
2018-11-13 2018-09-30 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 50,316 14,085 38.88 105 8.25 0.0001
2018-08-10 2018-06-30 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 36,231 -9,469 -20.72 97 10.23 0.0001
2018-05-11 2018-03-31 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 45,700 22,496 96.95 88 54.39 0.0001
2018-02-12 2017-12-31 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 23,204 -78,251 -77.13 57 -89.48 0.0000
2017-11-13 2017-09-30 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 101,455 51,628 103.61 542 71.52 0.0004
2017-08-11 2017-06-30 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 49,827 31,267 168.46 316 107.89 0.0003
2017-05-12 2017-03-31 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 18,560 -124,078 -86.99 152 -87.31 0.0001
2017-02-10 2016-12-31 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 142,638 104,645 275.43 1,198 211.98 0.0011
2016-11-10 2016-09-30 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 37,993 15,301 67.43 384 22.29 0.0004
2016-08-12 2016-06-30 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 22,692 -49,822 -68.71 314 -69.28 0.0003
2016-05-13 2016-03-31 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 72,514 45,274 166.20 1,022 141.04 0.0011
2016-02-12 2015-12-31 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 27,240 -48,721 -64.14 424 -63.29 0.0004
2015-11-13 2015-09-30 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 75,961 68,121 868.89 1,155 931.25 0.0011
2015-08-13 2015-06-30 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 7,840 -78,543 -90.92 112 -89.12 0.0001
2015-05-14 2015-03-31 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 86,383 64,773 299.74 1,029 372.02 0.0010
2015-02-17 2014-12-31 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 21,610 8,361 63.11 218 107.62 0.0002
2014-11-14 2014-09-30 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 13,249 -313 -2.31 105 -18.60 0.0001
2014-08-14 2014-06-30 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 13,562 -5,249 -27.90 129 -30.27 0.0001
2014-05-15 2014-03-31 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 18,811 -28,302 -60.07 185 -59.52 0.0002
2014-02-14 2013-12-31 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 47,113 31,597 203.64 457 257.03 0.0004
2013-11-14 2013-09-30 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 15,516 -22,234 -58.90 128 -55.24 0.0001
2013-08-14 2013-06-30 13F NORDIC AMERICAN TANKERS LIMI COM G65773106 37,750 37,750 286 0.0003
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
(%)
2021-05-13 2021-03-31 13F NORDIC AMERICAN TANKERS LIMI COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-02-11 2020-12-31 13F NORDIC AMERICAN TANKERS LIMI COM Call 3,900 -88.46 12 -89.83 n/a n/a n/a
2020-11-12 2020-09-30 13F NORDIC AMERICAN TANKERS LIMI COM Call 33,800 -38.55 118 -47.09 n/a n/a n/a
2020-08-12 2020-06-30 13F NORDIC AMERICAN TANKERS LIMI COM Call 55,000 49.46 223 33.53 n/a n/a n/a
2020-05-12 2020-03-31 13F NORDIC AMERICAN TANKERS LIMI COM Call 36,800 -30.57 167 -36.02 n/a n/a n/a
2020-02-12 2019-12-31 13F NORDIC AMERICAN TANKERS LIMI COM Call 53,000 107.84 261 374.55 n/a n/a n/a
2019-11-08 2019-09-30 13F NORDIC AMERICAN TANKERS LIMI COM Call 25,500 97.67 55 83.33 n/a n/a n/a
2019-08-12 2019-06-30 13F NORDIC AMERICAN TANKERS LIMI COM Call 12,900 3.20 30 20.00 n/a n/a n/a
2019-05-13 2019-03-31 13F NORDIC AMERICAN TANKERS LIMI COM Call 12,500 -10.71 25 -10.71 n/a n/a n/a
2019-02-12 2018-12-31 13F NORDIC AMERICAN TANKERS LIMI COM Call 14,000 -34.88 28 -37.78 n/a n/a n/a
2018-11-13 2018-09-30 13F NORDIC AMERICAN TANKERS LIMI COM Call 21,500 49.31 45 15.38 n/a n/a n/a
2018-08-10 2018-06-30 13F NORDIC AMERICAN TANKERS LIMI COM Call 14,400 -25.39 39 5.41 n/a n/a n/a
2018-05-11 2018-03-31 13F NORDIC AMERICAN TANKERS LIMI COM Call 19,300 -51.51 37 -62.24 n/a n/a n/a
2018-02-12 2017-12-31 13F NORDIC AMERICAN TANKERS LIMI COM Call 39,800 3.38 98 -52.43 n/a n/a n/a
2017-11-13 2017-09-30 13F NORDIC AMERICAN TANKERS LIMI COM Call 38,500 -7.23 206 -21.67 n/a n/a n/a
2017-08-11 2017-06-30 13F NORDIC AMERICAN TANKERS LIMI COM Call 41,500 46.13 263 13.36 n/a n/a n/a
2017-05-12 2017-03-31 13F NORDIC AMERICAN TANKERS LIMI COM Call 28,400 -17.92 232 -20.27 n/a n/a n/a
2017-02-10 2016-12-31 13F NORDIC AMERICAN TANKERS LIMI COM Call 34,600 100.00 291 66.29 n/a n/a n/a
2016-11-10 2016-09-30 13F NORDIC AMERICAN TANKERS LIMI COM Call 17,300 183.61 175 105.88 n/a n/a n/a
2016-08-12 2016-06-30 13F NORDIC AMERICAN TANKERS LIMI COM Call 6,100 -65.34 85 -65.73 n/a n/a n/a
2016-05-13 2016-03-31 13F NORDIC AMERICAN TANKERS LIMI COM Call 17,600 23.94 248 12.22 n/a n/a n/a
2016-02-12 2015-12-31 13F NORDIC AMERICAN TANKERS LIMI COM Call 14,200 36.54 221 39.87 n/a n/a n/a
2015-11-13 2015-09-30 13F NORDIC AMERICAN TANKERS LIMI COM Call 10,400 5,100.00 158 5,166.67 n/a n/a n/a
2015-08-13 2015-06-30 13F NORDIC AMERICAN TANKERS LIMI COM Call 200 -99.95 3 -99.94 n/a n/a n/a
2015-05-14 2015-03-31 13F NORDIC AMERICAN TANKERS LIMI COM Call 400,000 4,764 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
(%)
2021-05-13 2021-03-31 13F NORDIC AMERICAN TANKERS LIMI COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2021-02-11 2020-12-31 13F NORDIC AMERICAN TANKERS LIMI COM Put 6,000 -79.45 18 -82.35 n/a n/a n/a
2020-11-12 2020-09-30 13F NORDIC AMERICAN TANKERS LIMI COM Put 29,200 -35.40 102 -44.57 n/a n/a n/a
2020-08-12 2020-06-30 13F NORDIC AMERICAN TANKERS LIMI COM Put 45,200 61.43 184 44.88 n/a n/a n/a
2020-05-12 2020-03-31 13F NORDIC AMERICAN TANKERS LIMI COM Put 28,000 16.67 127 7.63 n/a n/a n/a
2020-02-12 2019-12-31 13F NORDIC AMERICAN TANKERS LIMI COM Put 24,000 1,746.15 118 3,833.33 n/a n/a n/a
2019-11-08 2019-09-30 13F NORDIC AMERICAN TANKERS LIMI COM Put 1,300 -92.35 3 -92.50 n/a n/a n/a
2019-08-12 2019-06-30 13F NORDIC AMERICAN TANKERS LIMI COM Put 17,000 -43.33 40 -34.43 n/a n/a n/a
2019-05-13 2019-03-31 13F NORDIC AMERICAN TANKERS LIMI COM Put 30,000 -39.15 61 -38.38 n/a n/a n/a
2019-02-12 2018-12-31 13F NORDIC AMERICAN TANKERS LIMI COM Put 49,300 -5.74 99 -9.17 n/a n/a n/a
2018-11-13 2018-09-30 13F NORDIC AMERICAN TANKERS LIMI COM Put 52,300 70.92 109 32.93 n/a n/a n/a
2018-08-10 2018-06-30 13F NORDIC AMERICAN TANKERS LIMI COM Put 30,600 6.25 82 46.43 n/a n/a n/a
2018-05-11 2018-03-31 13F NORDIC AMERICAN TANKERS LIMI COM Put 28,800 13.39 56 -9.68 n/a n/a n/a
2018-02-12 2017-12-31 13F NORDIC AMERICAN TANKERS LIMI COM Put 25,400 -77.58 62 -89.75 n/a n/a n/a
2017-11-13 2017-09-30 13F NORDIC AMERICAN TANKERS LIMI COM Put 113,300 -4.71 605 -19.76 n/a n/a n/a
2017-08-11 2017-06-30 13F NORDIC AMERICAN TANKERS LIMI COM Put 118,900 314.29 754 220.85 n/a n/a n/a
2017-05-12 2017-03-31 13F NORDIC AMERICAN TANKERS LIMI COM Put 28,700 -30.68 235 -32.47 n/a n/a n/a
2017-02-10 2016-12-31 13F NORDIC AMERICAN TANKERS LIMI COM Put 41,400 20.35 348 0.00 n/a n/a n/a
2016-11-10 2016-09-30 13F NORDIC AMERICAN TANKERS LIMI COM Put 34,400 194.02 348 113.50 n/a n/a n/a
2016-08-12 2016-06-30 13F NORDIC AMERICAN TANKERS LIMI COM Put 11,700 485.00 163 482.14 n/a n/a n/a
2016-05-13 2016-03-31 13F NORDIC AMERICAN TANKERS LIMI COM Put 2,000 66.67 28 47.37 n/a n/a n/a
2016-02-12 2015-12-31 13F NORDIC AMERICAN TANKERS LIMI COM Put 1,200 -47.83 19 -45.71 n/a n/a n/a
2015-11-13 2015-09-30 13F NORDIC AMERICAN TANKERS LIMI COM Put 2,300 1,050.00 35 1,066.67 n/a n/a n/a
2015-08-13 2015-06-30 13F NORDIC AMERICAN TANKERS LIMI COM Put 200 3 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.