Tronox Holdings plc
US ˙ NYSE ˙ GB00BJT16S69

SecurityTROX / Tronox Holdings plc
InstitutionGroup One Trading, L.p.
Latest Disclosed Ownership50,437 shares
Latest Disclosed Value $ 210,322
Group One Trading, L.p. ownership in TROX / Tronox Holdings plc

On February 11, 2026 - Group One Trading, L.p. filed a 13F-HR form disclosing ownership of 50,437 shares of Tronox Holdings plc (US:TROX) valued at $210,322 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 12, 2025 disclosing 84,049 shares of Tronox Holdings plc. This represents a change in shares of -39.99% during the quarter. The current value of the position is $393,913 USD.

Group One Trading, L.p. has a history of taking positions in derivatives of the underlying security (TROX) in the form of stock options. The firm currently holds call options representing 108,300 of underlying shares valued at $451,611 USD and put options representing 65,400 of underlying shares valued at $272,718 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.

TROX / Tronox Holdings plc 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)
2026-02-11 2025-12-31 13F TRONOX HOLDINGS SHS G9087Q102 50,437 -33,612 -39.99 210 -37.69 0.0004
2025-11-12 2025-09-30 13F TRONOX HOLDINGS SHS G9087Q102 84,049 52,346 165.11 338 110.63 0.0006
2025-08-14 2025-06-30 13F TRONOX HOLDINGS SHS G9087Q102 31,703 31,703 161 0.0004
2025-05-14 2024-12-31 13F/A-1 TRONOX HOLDINGS SHS G9087Q102 0 -27,274 -100.00 0 -100.00
2025-02-14 2024-12-31 13F TRONOX HOLDINGS SHS G9087Q102 0 -27,274 0
2024-11-14 2024-09-30 13F TRONOX HOLDINGS SHS G9087Q102 27,274 19,944 272.09 399 246.96 0.0011
2024-08-14 2024-06-30 13F TRONOX HOLDINGS SHS G9087Q102 7,330 3,435 88.19 115 71.64 0.0004
2024-05-10 2024-03-31 13F TRONOX HOLDINGS SHS G9087Q102 3,895 3,895 68 0.0003
2024-02-14 2023-12-31 13F TRONOX HOLDINGS SHS G9087Q102 0 -11,645 -100.00 0 -100.00
2023-11-09 2023-09-30 13F TRONOX HOLDINGS SHS G9087Q102 11,645 11,645 157 0.0005
2022-11-09 2022-09-30 13F TRONOX HOLDINGS SHS G9087Q102 0 -16,630 -100.00 0 -100.00
2022-08-11 2022-06-30 13F TRONOX HOLDINGS SHS G9087Q102 16,630 -16,173 -49.30 279 -57.01 0.0004
2022-05-12 2022-03-31 13F TRONOX HOLDINGS SHS G9087Q102 32,803 11,521 54.13 649 27.01 0.0006
2022-02-11 2021-12-31 13F TRONOX HOLDINGS SHS G9087Q102 21,282 21,282 511 0.0004
2021-11-12 2021-09-30 13F TRONOX HOLDINGS SHS G9087Q102 0 -29,677 -100.00 0 -100.00
2021-08-10 2021-06-30 13F TRONOX HOLDINGS SHS G9087Q102 29,677 -9,612 -24.46 665 -7.51 0.0008
2021-05-12 2021-03-31 13F TRONOX HOLDINGS SHS G9087Q102 39,289 39,289 719 0.0011
2020-11-12 2020-09-30 13F TRONOX HOLDINGS SHS G9087Q102 0 -57,481 -100.00 0 -100.00
2020-08-13 2020-06-30 13F TRONOX HOLDINGS SHS G9087Q102 57,481 7,992 16.15 415 68.70 0.0019
2020-05-13 2020-03-31 13F TRONOX HOLDINGS SHS G9087Q102 49,489 6,871 16.12 246 -49.49 0.0020
2020-02-10 2019-12-31 13F TRONOX HOLDINGS SHS G9087Q102 42,618 -8,808 -17.13 487 14.05 0.0033
2019-11-12 2019-09-30 13F TRONOX HOLDINGS SHS G9087Q102 51,426 26,547 106.70 427 34.28 0.0034
2019-08-09 2019-06-30 13F TRONOX HOLDINGS SHS G9087Q102 24,879 -30,563 -55.13 318 -56.38 0.0029
2019-05-14 2019-03-31 13F/A-1 TRONOX HOLDINGS SHS G9087Q102 55,442 55,442 729 0.0081
2019-05-13 2019-03-31 13F TRONOX HOLDINGS SHS G9087Q102 55,442 729
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
(%)
2026-02-11 2025-12-31 13F TRONOX HOLDINGS SHS Call 108,300 15.83 452 20.27 n/a n/a n/a
2025-11-12 2025-09-30 13F TRONOX HOLDINGS SHS Call 93,500 137.31 376 88.44 n/a n/a n/a
2025-08-14 2025-06-30 13F TRONOX HOLDINGS SHS Call 39,400 860.98 200 610.71 n/a n/a n/a
2025-05-14 2025-03-31 13F TRONOX HOLDINGS SHS Call 4,100 -70.29 29 -79.71 n/a n/a n/a
2025-05-14 2024-12-31 13F/A TRONOX HOLDINGS SHS Call 13,800 -13.21 139 -40.52 n/a n/a n/a
2025-02-14 2024-12-31 13F TRONOX HOLDINGS SHS Call 13,800 139 n/a n/a n/a
2024-11-14 2024-09-30 13F TRONOX HOLDINGS SHS Call 15,900 -24.64 233 -29.91 n/a n/a n/a
2024-08-14 2024-06-30 13F TRONOX HOLDINGS SHS Call 21,100 -23.55 331 -30.75 n/a n/a n/a
2024-05-10 2024-03-31 13F TRONOX HOLDINGS SHS Call 27,600 23.77 479 51.75 n/a n/a n/a
2024-02-14 2023-12-31 13F TRONOX HOLDINGS SHS Call 22,300 -47.90 316 -45.22 n/a n/a n/a
2023-11-09 2023-09-30 13F TRONOX HOLDINGS SHS Call 42,800 45.08 575 53.74 n/a n/a n/a
2023-08-09 2023-06-30 13F TRONOX HOLDINGS SHS Call 29,500 -77.10 375 -79.81 n/a n/a n/a
2023-05-12 2023-03-31 13F TRONOX HOLDINGS SHS Call 128,800 391.60 1,852 415.88 n/a n/a n/a
2023-02-09 2022-12-31 13F TRONOX HOLDINGS SHS Call 26,200 -73.56 359 -70.43 n/a n/a n/a
2022-11-09 2022-09-30 13F TRONOX HOLDINGS SHS Call 99,100 154.76 1,214 85.63 n/a n/a n/a
2022-08-11 2022-06-30 13F TRONOX HOLDINGS SHS Call 38,900 -12.19 654 -25.43 n/a n/a n/a
2022-05-12 2022-03-31 13F TRONOX HOLDINGS SHS Call 44,300 -51.95 877 -60.42 n/a n/a n/a
2022-02-11 2021-12-31 13F TRONOX HOLDINGS SHS Call 92,200 -83.08 2,216 -83.50 n/a n/a n/a
2021-11-12 2021-09-30 13F TRONOX HOLDINGS SHS Call 544,800 543.97 13,429 608.65 n/a n/a n/a
2021-08-10 2021-06-30 13F TRONOX HOLDINGS SHS Call 84,600 256.96 1,895 336.64 n/a n/a n/a
2021-05-12 2021-03-31 13F TRONOX HOLDINGS SHS Call 23,700 -87.33 434 -84.13 n/a n/a n/a
2021-02-10 2020-12-31 13F TRONOX HOLDINGS SHS Call 187,100 1.14 2,735 87.84 n/a n/a n/a
2020-11-12 2020-09-30 13F TRONOX HOLDINGS SHS Call 185,000 21.95 1,456 32.97 n/a n/a n/a
2020-08-13 2020-06-30 13F TRONOX HOLDINGS SHS Call 151,700 -22.96 1,095 11.62 n/a n/a n/a
2020-05-13 2020-03-31 13F TRONOX HOLDINGS SHS Call 196,900 398.48 981 117.52 n/a n/a n/a
2020-02-10 2019-12-31 13F TRONOX HOLDINGS SHS Call 39,500 53.10 451 110.75 n/a n/a n/a
2019-11-12 2019-09-30 13F TRONOX HOLDINGS SHS Call 25,800 -58.52 214 -73.08 n/a n/a n/a
2019-08-09 2019-06-30 13F TRONOX HOLDINGS SHS Call 62,200 -38.48 795 -40.18 n/a n/a n/a
2019-05-14 2019-03-31 13F/A TRONOX HOLDINGS SHS Call 101,100 -47.99 1,329 -12.10 n/a n/a n/a
2019-05-13 2019-03-31 13F TRONOX HOLDINGS SHS Call 101,100 1,329 n/a n/a n/a
2019-02-05 2018-12-31 13F TRONOX SHS CL A Call 194,400 254.74 1,512 130.84 n/a n/a n/a
2018-11-08 2018-09-30 13F TRONOX SHS CL A Call 54,800 -60.80 655 -76.19 n/a n/a n/a
2018-08-13 2018-06-30 13F TRONOX SHS CL A Call 139,800 -58.66 2,751 -55.89 n/a n/a n/a
2018-05-16 2018-03-31 13F/A TRONOX SHS CL A Call 338,200 -24.84 6,236 -32.44 n/a n/a n/a
2018-05-10 2018-03-31 13F TRONOX SHS CL A Call 338,200 6,236 n/a n/a n/a
2018-02-09 2017-12-31 13F TRONOX SHS CL A Call 450,000 305.41 9,230 294.11 n/a n/a n/a
2017-11-15 2017-09-30 13F TRONOX SHS CL A Call 111,000 125.15 2,342 214.36 n/a n/a n/a
2017-08-14 2017-06-30 13F TRONOX SHS CL A Call 49,300 58.01 745 29.34 n/a n/a n/a
2017-05-10 2017-03-31 13F TRONOX SHS CL A Call 31,200 -92.15 576 -85.94 n/a n/a n/a
2017-02-15 2016-12-31 13F TRONOX SHS CL A Call 397,300 6.77 4,096 17.46 n/a n/a n/a
2016-11-14 2016-09-30 13F TRONOX SHS CL A Call 372,100 18.43 3,487 151.59 n/a n/a n/a
2016-08-12 2016-06-30 13F TRONOX SHS CL A Call 314,200 29.78 1,386 -10.41 n/a n/a n/a
2016-05-12 2016-03-31 13F TRONOX SHS CL A Call 242,100 192.04 1,547 377.47 n/a n/a n/a
2016-02-11 2015-12-31 13F TRONOX SHS CL A Call 82,900 390.53 324 337.84 n/a n/a n/a
2015-11-20 2015-09-30 13F/A TRONOX SHS CL A Call 16,900 46.96 74 -55.95 n/a n/a n/a
2015-11-06 2015-09-30 13F TRONOX SHS CL A Call 16,900 74 n/a n/a n/a
2015-08-11 2015-06-30 13F TRONOX SHS CL A Call 11,500 27.78 168 -8.20 n/a n/a n/a
2015-05-14 2015-03-31 13F TRONOX SHS CL A Call 9,000 -64.98 183 -70.20 n/a n/a n/a
2015-02-11 2014-12-31 13F TRONOX SHS CL A Call 25,700 30.46 614 19.69 n/a n/a n/a
2014-10-31 2014-09-30 13F TRONOX SHS CL A Call 19,700 20.12 513 16.33 n/a n/a n/a
2014-08-12 2014-06-30 13F TRONOX SHS CL A Call 16,400 22.39 441 38.24 n/a n/a n/a
2014-05-07 2014-03-31 13F TRONOX SHS CL A Call 13,400 162.75 319 170.34 n/a n/a n/a
2014-01-31 2013-12-31 13F TRONOX SHS CL A Call 5,100 -85.67 118 -86.45 n/a n/a n/a
2013-11-15 2013-09-30 13F TRONOX SHS CL A Call 35,600 -45.23 871 -33.51 n/a n/a n/a
2013-08-02 2013-06-30 13F TRONOX SHS CL A Call 65,000 1,310 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
(%)
2026-02-11 2025-12-31 13F TRONOX HOLDINGS SHS Put 65,400 -55.69 273 -54.13 n/a n/a n/a
2025-11-12 2025-09-30 13F TRONOX HOLDINGS SHS Put 147,600 2,401.69 593 1,944.83 n/a n/a n/a
2025-08-14 2025-06-30 13F TRONOX HOLDINGS SHS Put 5,900 195.00 30 107.14 n/a n/a n/a
2025-05-14 2025-03-31 13F TRONOX HOLDINGS SHS Put 2,000 233.33 14 133.33 n/a n/a n/a
2025-05-14 2024-12-31 13F/A TRONOX HOLDINGS SHS Put 600 -97.01 6 -97.96 n/a n/a n/a
2025-02-14 2024-12-31 13F TRONOX HOLDINGS SHS Put 600 6 n/a n/a n/a
2024-11-14 2024-09-30 13F TRONOX HOLDINGS SHS Put 20,100 20,000.00 294 29,300.00 n/a n/a n/a
2024-08-14 2024-06-30 13F TRONOX HOLDINGS SHS Put 100 -80.00 2 -87.50 n/a n/a n/a
2024-05-10 2024-03-31 13F TRONOX HOLDINGS SHS Put 500 150.00 9 300.00 n/a n/a n/a
2024-02-14 2023-12-31 13F TRONOX HOLDINGS SHS Put 200 3 n/a n/a n/a
2023-11-09 2023-09-30 13F TRONOX HOLDINGS SHS Put 0 -100.00 0 -100.00 n/a n/a n/a
2023-08-09 2023-06-30 13F TRONOX HOLDINGS SHS Put 1,900 850.00 24 1,100.00 n/a n/a n/a
2023-05-12 2023-03-31 13F TRONOX HOLDINGS SHS Put 200 -98.98 3 -99.25 n/a n/a n/a
2023-02-09 2022-12-31 13F TRONOX HOLDINGS SHS Put 19,600 292.00 269 339.34 n/a n/a n/a
2022-11-09 2022-09-30 13F TRONOX HOLDINGS SHS Put 5,000 -93.10 61 -94.99 n/a n/a n/a
2022-08-11 2022-06-30 13F TRONOX HOLDINGS SHS Put 72,500 -58.99 1,218 -65.19 n/a n/a n/a
2022-05-12 2022-03-31 13F TRONOX HOLDINGS SHS Put 176,800 34.45 3,499 10.73 n/a n/a n/a
2022-02-11 2021-12-31 13F TRONOX HOLDINGS SHS Put 131,500 -2.01 3,160 -4.47 n/a n/a n/a
2021-11-12 2021-09-30 13F TRONOX HOLDINGS SHS Put 134,200 1,312.63 3,308 1,453.05 n/a n/a n/a
2021-08-10 2021-06-30 13F TRONOX HOLDINGS SHS Put 9,500 -12.04 213 7.58 n/a n/a n/a
2021-05-12 2021-03-31 13F TRONOX HOLDINGS SHS Put 10,800 -85.71 198 -82.08 n/a n/a n/a
2021-02-10 2020-12-31 13F TRONOX HOLDINGS SHS Put 75,600 4.13 1,105 93.52 n/a n/a n/a
2020-11-12 2020-09-30 13F TRONOX HOLDINGS SHS Put 72,600 -0.68 571 8.14 n/a n/a n/a
2020-08-13 2020-06-30 13F TRONOX HOLDINGS SHS Put 73,100 -52.32 528 -30.80 n/a n/a n/a
2020-05-13 2020-03-31 13F TRONOX HOLDINGS SHS Put 153,300 162.50 763 14.39 n/a n/a n/a
2020-02-10 2019-12-31 13F TRONOX HOLDINGS SHS Put 58,400 9.36 667 50.56 n/a n/a n/a
2019-11-12 2019-09-30 13F TRONOX HOLDINGS SHS Put 53,400 12.90 443 -26.66 n/a n/a n/a
2019-08-09 2019-06-30 13F TRONOX HOLDINGS SHS Put 47,300 -4.83 604 -7.65 n/a n/a n/a
2019-05-14 2019-03-31 13F/A TRONOX HOLDINGS SHS Put 49,700 -72.78 654 -53.98 n/a n/a n/a
2019-05-13 2019-03-31 13F TRONOX HOLDINGS SHS Put 49,700 654 n/a n/a n/a
2019-02-05 2018-12-31 13F TRONOX SHS CL A Put 182,600 583.90 1,421 345.45 n/a n/a n/a
2018-11-08 2018-09-30 13F TRONOX SHS CL A Put 26,700 -57.55 319 -74.23 n/a n/a n/a
2018-08-13 2018-06-30 13F TRONOX SHS CL A Put 62,900 -57.61 1,238 -54.77 n/a n/a n/a
2018-05-16 2018-03-31 13F/A TRONOX SHS CL A Put 148,400 -55.45 2,737 -59.94 n/a n/a n/a
2018-05-10 2018-03-31 13F TRONOX SHS CL A Put 148,400 2,737 n/a n/a n/a
2018-02-09 2017-12-31 13F TRONOX SHS CL A Put 333,100 5,451.67 6,832 5,279.53 n/a n/a n/a
2017-11-15 2017-09-30 13F TRONOX SHS CL A Put 6,000 -86.05 127 -80.46 n/a n/a n/a
2017-08-14 2017-06-30 13F TRONOX SHS CL A Put 43,000 86.96 650 53.30 n/a n/a n/a
2017-05-10 2017-03-31 13F TRONOX SHS CL A Put 23,000 -65.62 424 -38.55 n/a n/a n/a
2017-02-15 2016-12-31 13F TRONOX SHS CL A Put 66,900 435.20 690 489.74 n/a n/a n/a
2016-11-14 2016-09-30 13F TRONOX SHS CL A Put 12,500 0.00 117 112.73 n/a n/a n/a
2016-08-12 2016-06-30 13F TRONOX SHS CL A Put 12,500 165.96 55 83.33 n/a n/a n/a
2016-05-12 2016-03-31 13F TRONOX SHS CL A Put 4,700 -89.74 30 -83.24 n/a n/a n/a
2016-02-11 2015-12-31 13F TRONOX SHS CL A Put 45,800 494.81 179 426.47 n/a n/a n/a
2015-11-20 2015-09-30 13F/A TRONOX SHS CL A Put 7,700 413.33 34 54.55 n/a n/a n/a
2015-11-06 2015-09-30 13F TRONOX SHS CL A Put 7,700 34 n/a n/a n/a
2015-08-11 2015-06-30 13F TRONOX SHS CL A Put 1,500 -55.88 22 -68.12 n/a n/a n/a
2015-05-14 2015-03-31 13F TRONOX SHS CL A Put 3,400 -33.33 69 -43.44 n/a n/a n/a
2015-02-11 2014-12-31 13F TRONOX SHS CL A Put 5,100 -17.74 122 -24.69 n/a n/a n/a
2014-10-31 2014-09-30 13F TRONOX SHS CL A Put 6,200 -22.50 162 -24.65 n/a n/a n/a
2014-08-12 2014-06-30 13F TRONOX SHS CL A Put 8,000 122.22 215 150.00 n/a n/a n/a
2014-05-07 2014-03-31 13F TRONOX SHS CL A Put 3,600 -86.21 86 -85.71 n/a n/a n/a
2014-01-31 2013-12-31 13F TRONOX SHS CL A Put 26,100 -15.53 602 -20.37 n/a n/a n/a
2013-11-15 2013-09-30 13F TRONOX SHS CL A Put 30,900 82.84 756 121.70 n/a n/a n/a
2013-08-02 2013-06-30 13F TRONOX SHS CL A Put 16,900 341 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.