Cmb.Tech NV
US ˙ NYSE ˙ BE0003816338

SecurityCMBT / Cmb.Tech NV
InstitutionCitadel Advisors Llc
ManagerKen Griffin
Latest Disclosed Ownership2,254,149 shares
Latest Disclosed Value $ 28,514,985
Citadel Advisors Llc ownership in CMBT / Cmb.Tech NV

On May 15, 2026 - Citadel Advisors Llc filed a 13F-HR form disclosing ownership of 2,254,149 shares of Cmb.Tech NV (US:CMBT) valued at $28,514,985 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 817,407 shares of Cmb.Tech NV. This represents a change in shares of 175.77% during the quarter. The current value of the position is $33,383,947 USD.

Citadel Advisors Llc has a history of taking positions in derivatives of the underlying security (CMBT) in the form of stock options. The firm currently holds call options representing 374,600 of underlying shares valued at $4,738,690 USD and put options representing 104,900 of underlying shares valued at $1,326,985 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.

CMBT / Cmb.Tech NV 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 CMB.TECH SHS B38564108 2,254,149 1,436,742 175.77 28,515 261.53 0.0041
2026-02-17 2025-12-31 13F CMB.TECH SHS B38564108 817,407 625,148 325.16 7,888 336.95 0.0012
2025-11-14 2025-09-30 13F CMB.TECH SHS B38564108 192,259 154,682 411.64 1,805 434.02 0.0003
2025-08-14 2025-06-30 13F CMB.TECH SHS B38564108 37,577 37,577 339 0.0001
2025-05-15 2025-03-31 13F CMB.TECH SHS B38564108 0 -17,040 -100.00 0 -100.00
2025-02-14 2024-12-31 13F CMB.TECH SHS B38564108 17,040 -29,057 -63.03 169 -77.94 0.0000
2024-11-14 2024-09-30 13F EURONAV SHS B38564108 46,097 46,097 766 0.0001
2024-05-15 2024-03-31 13F EURONAV SHS B38564108 0 -181,787 -100.00 0 -100.00
2024-02-14 2023-12-31 13F EURONAV SHS B38564108 181,787 169,848 1,422.63 3,198 1,531.12 0.0006
2023-11-14 2023-09-30 13F EURONAV SHS B38564108 11,939 -162,700 -93.16 196 -92.63 0.0000
2023-08-14 2023-06-30 13F EURONAV SHS B38564108 174,639 -330,881 -65.45 2,658 -68.68 0.0005
2023-05-15 2023-03-31 13F EURONAV SHS B38564108 505,520 414,356 454.52 8,488 446.49 0.0019
2023-02-14 2022-12-31 13F EURONAV SHS B38564108 91,164 -87,346 -48.93 1,553 -43.47 0.0004
2022-11-14 2022-09-30 13F EURONAV SHS B38564108 178,510 178,510 2,747 0.0006
2022-08-15 2022-06-30 13F EURONAV SHS B38564108 0 -82,909 -100.00 0 -100.00
2022-05-16 2022-03-31 13F EURONAV SHS B38564108 82,909 32,355 64.00 876 95.10 0.0002
2022-02-14 2021-12-31 13F EURONAV SHS B38564108 50,554 -8,583 -14.51 449 -22.18 0.0001
2022-03-11 2021-09-30 13F/A-1 EURONAV SHS B38564108 59,137 -10,391 -14.95 577 -10.96 0.3675
2021-08-16 2021-06-30 13F EURONAV SHS B38564108 69,528 -111,285 -61.55 648 -60.82 0.0001
2021-05-21 2021-03-31 13F/A-1 EURONAV SHS B38564108 180,813 128,772 247.44 1,654 297.60 0.0004
2021-05-17 2021-03-31 13F EURONAV SHS B38564108 180,813 128,772 1,654 0.0004
2021-02-16 2020-12-31 13F EURONAV SHS B38564108 52,041 -109,636 -67.81 416 -70.87 0.0001
2020-11-16 2020-09-30 13F EURONAV SHS B38564108 161,677 161,677 1,428 0.0004
2020-08-14 2020-06-30 13F EURONAV NV ANTWERPEN Cmn B38564108 0 -1,426,647 -100.00 0 -100.00
2020-05-15 2020-03-31 13F EURONAV NV ANTWERPEN Cmn B38564108 1,426,647 -258,628 -15.35 16,092 -23.85 0.0072
2020-02-14 2019-12-31 13F EURONAV NV ANTWERPEN Cmn B38564108 1,685,275 1,421,021 537.75 21,133 769.31 0.0092
2019-11-14 2019-09-30 13F EURONAV NV ANTWERPEN Cmn B38564108 264,254 -7,552 -2.78 2,431 -5.26 0.0011
2019-08-14 2019-06-30 13F EURONAV NV ANTWERPEN Cmn B38564108 271,806 73,582 37.12 2,566 58.89 0.0012
2019-05-15 2019-03-31 13F EURONAV NV ANTWERPEN Cmn B38564108 198,224 -194,772 -49.56 1,615 -40.69 0.0008
2019-02-14 2018-12-31 13F EURONAV NV ANTWERPEN Cmn B38564108 392,996 373,909 1,958.97 2,723 1,540.36 0.0015
2018-11-13 2018-09-30 13F EURONAV NV ANTWERPEN Cmn B38564108 19,087 19,087 166 0.0001
2018-08-14 2018-06-30 13F/A-1 EURONAV NV ANTWERPEN Cmn B38564108 0 -16,262 -100.00 0 -100.00
2018-05-14 2018-03-31 13F/A-1 EURONAV NV ANTWERPEN Cmn B38564108 16,262 16,262 133 0.0001
2018-05-11 2018-03-31 13F EURONAV NV ANTWERPEN Cmn B38564108 16,262 16,262 133
2017-11-09 2017-09-30 13F EURONAV NV ANTWERPEN Cmn B38564108 0 -36,302 -100.00 0 -100.00
2017-08-11 2017-06-30 13F EURONAV NV ANTWERPEN Cmn B38564108 36,302 -606 -1.64 287 -1.71 0.0002
2017-05-12 2017-03-31 13F EURONAV NV ANTWERPEN Cmn B38564108 36,908 -8,409 -18.56 292 -18.89 0.0003
2017-02-10 2016-12-31 13F EURONAV NV ANTWERPEN Cmn B38564108 45,317 20,160 80.14 360 87.50 0.0004
2017-01-31 2016-09-30 13F/A-1 EURONAV NV ANTWERPEN Cmn B38564108 25,157 25,157 0.00 192 0.0002
2016-11-10 2016-09-30 13F EURONAV Cmn B38564108 25,157 192
2016-08-12 2016-06-30 13F EURONAV Cmn B38564108 0 -117,689 -100.00 0 -100.00
2017-01-31 2016-03-31 13F/A-1 EURONAV NV ANTWERPEN Cmn B38564108 117,689 -1,103,868 -90.37 1,205 -92.81 0.0015
2016-05-13 2016-03-31 13F EURONAV Cmn B38564108 117,689 1,205
2017-01-31 2015-12-31 13F/A-1 EURONAV NV ANTWERPEN Cmn B38564108 1,221,557 172,731 16.47 16,748 14.88 0.0183
2016-02-12 2015-12-31 13F EURONAV Cmn B38564108 1,221,557 16,748
2015-11-16 2015-09-30 13F EURONAV Cmn B38564108 1,048,826 -303,860 -22.46 14,579 -27.23 0.0140
2015-08-14 2015-06-30 13F EURONAV Cmn B38564108 1,352,686 1,352,686 20,034 0.0176
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 CMB.TECH SHS Call 374,600 240.04 4,739 345.72 n/a n/a n/a
2026-02-17 2025-12-31 13F CMB.TECH SHS Call 110,165 1.66 1,063 4.52 n/a n/a n/a
2025-11-14 2025-09-30 13F CMB.TECH SHS Call 108,365 674.04 1,018 707.14 n/a n/a n/a
2025-08-14 2025-06-30 13F CMB.TECH SHS Call 14,000 126 n/a n/a n/a
2025-05-15 2025-03-31 13F CMB.TECH SHS Call 0 -100.00 0 -100.00 n/a n/a n/a
2025-02-14 2024-12-31 13F CMB.TECH SHS Call 1,600 -40.74 16 -65.91 n/a n/a n/a
2024-11-14 2024-09-30 13F EURONAV SHS Call 2,700 45 n/a n/a n/a
2024-05-15 2024-03-31 13F EURONAV SHS Call 0 -100.00 0 -100.00 n/a n/a n/a
2024-02-14 2023-12-31 13F EURONAV SHS Call 5,400 -86.80 95 -85.99 n/a n/a n/a
2023-11-14 2023-09-30 13F EURONAV SHS Call 40,900 11.75 672 20.47 n/a n/a n/a
2023-08-14 2023-06-30 13F EURONAV SHS Call 36,600 144.00 557 121.91 n/a n/a n/a
2023-05-15 2023-03-31 13F EURONAV SHS Call 15,000 -67.32 252 -67.90 n/a n/a n/a
2023-02-14 2022-12-31 13F EURONAV SHS Call 45,900 -17.74 782 -8.96 n/a n/a n/a
2022-11-14 2022-09-30 13F EURONAV SHS Call 55,800 -57.89 859 -45.67 n/a n/a n/a
2022-08-15 2022-06-30 13F EURONAV SHS Call 132,500 -8.56 1,581 3.20 n/a n/a n/a
2022-05-16 2022-03-31 13F EURONAV SHS Call 144,900 6.39 1,532 26.51 n/a n/a n/a
2022-02-14 2021-12-31 13F EURONAV SHS Call 136,200 -20.07 1,211 -27.18 n/a n/a n/a
2022-03-11 2021-09-30 13F/A EURONAV SHS Call 170,400 -7.79 1,663 -3.43 n/a n/a n/a
2021-08-16 2021-06-30 13F EURONAV SHS Call 184,800 113.64 1,722 117.70 n/a n/a n/a
2021-05-21 2021-03-31 13F/A EURONAV SHS Call 86,500 122.37 791 154.34 n/a n/a n/a
2021-05-17 2021-03-31 13F EURONAV SHS Call 86,500 791 n/a n/a n/a
2021-02-16 2020-12-31 13F EURONAV SHS Call 38,900 -26.88 311 -33.83 n/a n/a n/a
2020-11-16 2020-09-30 13F EURONAV SHS Call 53,200 -82.33 470 -80.84 n/a n/a n/a
2020-08-14 2020-06-30 13F EURONAV NV ANTWERPEN Cmn Call 301,000 12.61 2,453 -18.64 n/a n/a n/a
2020-05-15 2020-03-31 13F EURONAV NV ANTWERPEN Cmn Call 267,300 3,015 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 CMB.TECH SHS Put 104,900 -71.45 1,327 -62.60 n/a n/a n/a
2026-02-17 2025-12-31 13F CMB.TECH SHS Put 367,440 425.70 3,546 440.40 n/a n/a n/a
2025-11-14 2025-09-30 13F CMB.TECH SHS Put 69,895 656 n/a n/a n/a
2025-05-15 2025-03-31 13F CMB.TECH SHS Put 0 -100.00 0 -100.00 n/a n/a n/a
2025-02-14 2024-12-31 13F CMB.TECH SHS Put 600 -98.28 6 -99.14 n/a n/a n/a
2024-11-14 2024-09-30 13F EURONAV SHS Put 34,900 580 n/a n/a n/a
2024-05-15 2024-03-31 13F EURONAV SHS Put 0 -100.00 0 -100.00 n/a n/a n/a
2024-02-14 2023-12-31 13F EURONAV SHS Put 3,200 -83.51 56 -82.39 n/a n/a n/a
2023-11-14 2023-09-30 13F EURONAV SHS Put 19,400 -71.88 319 -69.71 n/a n/a n/a
2023-08-14 2023-06-30 13F EURONAV SHS Put 69,000 45.88 1,050 32.24 n/a n/a n/a
2023-05-15 2023-03-31 13F EURONAV SHS Put 47,300 97.91 794 95.09 n/a n/a n/a
2023-02-14 2022-12-31 13F EURONAV SHS Put 23,900 -24.61 407 -16.60 n/a n/a n/a
2022-11-14 2022-09-30 13F EURONAV SHS Put 31,700 -10.96 488 14.82 n/a n/a n/a
2022-08-15 2022-06-30 13F EURONAV SHS Put 35,600 -25.52 425 -15.84 n/a n/a n/a
2022-05-16 2022-03-31 13F EURONAV SHS Put 47,800 -29.71 505 -16.53 n/a n/a n/a
2022-02-14 2021-12-31 13F EURONAV SHS Put 68,000 -51.22 605 -55.55 n/a n/a n/a
2022-03-11 2021-09-30 13F/A EURONAV SHS Put 139,400 13.98 1,361 19.39 n/a n/a n/a
2021-08-16 2021-06-30 13F EURONAV SHS Put 122,300 -6.71 1,140 -5.00 n/a n/a n/a
2021-05-21 2021-03-31 13F/A EURONAV SHS Put 131,100 30.58 1,200 49.44 n/a n/a n/a
2021-05-17 2021-03-31 13F EURONAV SHS Put 131,100 1,200 n/a n/a n/a
2021-02-16 2020-12-31 13F EURONAV SHS Put 100,400 76.76 803 59.96 n/a n/a n/a
2020-11-16 2020-09-30 13F EURONAV SHS Put 56,800 9.86 502 19.24 n/a n/a n/a
2020-08-14 2020-06-30 13F EURONAV NV ANTWERPEN Cmn Put 51,700 147.37 421 78.39 n/a n/a n/a
2020-05-15 2020-03-31 13F EURONAV NV ANTWERPEN Cmn Put 20,900 -51.05 236 -55.89 n/a n/a n/a
2020-02-14 2019-12-31 13F EURONAV NV ANTWERPEN Cmn Put 42,700 535 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.