Nebius Group N.V.
DE ˙ DB ˙ NL0009805522
€ 215,00 ↓ -9.95 (-4.42%)
2026-06-05
PREÇO DA AÇÃO
SecurityDE:YDX / Nebius Group N.V.
InstitutionSei Investments Co
Latest Disclosed Ownership477,074 shares
Latest Disclosed Value $ 39,933,508
Sei Investments Co reports 12.54% decrease in ownership of YDX / Nebius Group N.V.

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 477,074 shares of Nebius Group N.V. (DE:YDX) valued at $35,780,550 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 545,499 shares of Nebius Group N.V.. This represents a change in shares of -12.54% during the quarter. The current value of the position is $102,570,910 USD.

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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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)
2026-02-13 2025-12-31 13F NEBIUS GROUP N.V. SHS CLASS A N97284108 477,074 -68,425 -12.54 39,934 -34.80
2025-11-13 2025-09-30 13F NEBIUS GROUP N.V. SHS CLASS A N97284108 545,499 65,784 13.71 61,243 130.73 0.0659
2025-08-14 2025-06-30 13F NEBIUS GROUP N.V. SHS CLASS A N97284108 479,715 273,207 132.30 26,543 508.92 0.0308
2025-05-14 2025-03-31 13F/A-1 NEBIUS GROUP N.V. SHS CLASS A N97284108 206,508 -171,942 -45.43 4,360 -58.41 0.0056
2025-05-13 2025-03-31 13F NEBIUS GROUP N.V. SHS CLASS A N97284108 209,718 -168,732 4,484 0.0049
2025-02-11 2024-12-31 13F NEBIUS GROUP N.V. SHS CLASS A N97284108 378,450 336,709 806.66 10,483 30,729.41 0.0135
2024-11-12 2024-09-30 13F NEBIUS GROUP N.V. SHS CLASS A N97284108 41,741 -8 -0.02 34 0.00 0.0000
2024-08-13 2024-06-30 13F YANDEX N V SHS CLASS A N97284108 41,749 10 0.02 34 0.00 0.0000
2024-05-07 2024-03-31 13F YANDEX N V SHS CLASS A N97284108 41,739 -13 -0.03 34 0.00 0.0001
2024-02-14 2023-12-31 13F YANDEX N V SHS CLASS A N97284108 41,752 12 0.03 35 0.00 0.0001
2023-11-14 2023-09-30 13F YANDEX N V SHS CLASS A N97284108 41,740 301 0.73 34 17.24 0.0001
2023-08-11 2023-06-30 13F YANDEX N V SHS CLASS A N97284108 41,439 -297,180 -87.76 30 -3.33 0.0001
2023-05-12 2023-03-31 13F YANDEX N V SHS CLASS A N97284108 338,619 128,652 61.27 30 0.00 0.0001
2023-02-10 2022-12-31 13F YANDEX N V SHS CLASS A N97284108 209,967 -184,948 -46.83 31 -69.07 0.0001
2022-11-14 2022-09-30 13F YANDEX N V SHS CLASS A N97284108 394,915 5,293 1.36 97 12.79 0.0002
2022-08-15 2022-06-30 13F YANDEX N V SHS CLASS A N97284108 389,622 184,928 90.34 86 0.00 0.0002
2022-05-13 2022-03-31 13F YANDEX N V SHS CLASS A N97284108 204,694 -531,345 -72.19 86 -99.81 0.0002
2022-02-14 2021-12-31 13F YANDEX N V SHS CLASS A N97284108 736,039 142,730 24.06 44,527 -5.83 0.0835
2021-11-12 2021-09-30 13F YANDEX N V SHS CLASS A N97284108 593,309 80,621 15.73 47,283 30.35 0.0992
2021-08-06 2021-06-30 13F YANDEX N V SHS CLASS A N97284108 512,688 33,534 7.00 36,275 18.00 0.0804
2021-05-12 2021-03-31 13F YANDEX N V SHS CLASS A N97284108 479,154 -111,727 -18.91 30,741 -25.25 0.0775
2021-02-08 2020-12-31 13F YANDEX N V SHS CLASS A N97284108 590,881 75,369 14.62 41,125 22.20 0.1063
2020-12-04 2020-09-30 13F/A-1 YANDEX N V SHS CLASS A N97284108 515,512 97,129 23.22 33,653 60.78 0.0974
2020-11-06 2020-09-30 13F YANDEX N V SHS CLASS A N97284108 515,512 97,129 33,653 81,028.9416
2020-08-17 2020-06-30 13F/A-1 YANDEX N V SHS CLASS A N97284108 418,383 10,581 2.59 20,931 50.64 0.0650
2020-08-11 2020-06-30 13F YANDEX N V SHS CLASS A N97284108 348,414 -59,388 15,240 41,339.3112
2020-05-14 2020-03-31 13F YANDEX N V SHS CLASS A N97284108 407,802 55,771 15.84 13,895 -9.25 0.0510
2020-02-06 2019-12-31 13F YANDEX N V SHS CLASS A N97284108 352,031 -257,356 -42.23 15,311 -28.22 0.0457
2019-11-12 2019-09-30 13F YANDEX N V SHS CLASS A N97284108 609,387 -54,364 -8.19 21,329 -15.43 0.0546
2019-08-14 2019-06-30 13F YANDEX N V SHS CLASS A N97284108 663,751 67,431 11.31 25,222 23.15 0.0824
2019-05-15 2019-03-31 13F YANDEX N V S3 CLASS A N97284108 596,320 145,691 32.33 20,481 38.75 0.0688
2019-02-13 2018-12-31 13F YANDEX N V SHS CLASS A N97284108 450,629 3,899 0.87 14,761 0.44 0.0526
2018-11-08 2018-09-30 13F YANDEX N V SHS CLASS A N97284108 446,730 -74,562 -14.30 14,697 -21.47 0.0533
2018-08-03 2018-06-30 13F YANDEX N V SHS CLASS A N97284108 521,292 99,828 23.69 18,714 12.56 0.0636
2018-05-11 2018-03-31 13F YANDEX N V SHS CLASS A N97284108 421,464 30,793 7.88 16,626 29.95 0.0637
2018-02-08 2017-12-31 13F YANDEX N V SHS CLASS A N97284108 390,671 95,436 32.33 12,794 31.52 0.0444
2017-11-06 2017-09-30 13F YANDEX N V SHS CLASS A N97284108 295,235 17,689 6.37 9,728 33.57 0.0346
2017-07-31 2017-06-30 13F YANDEX N V SHS CLASS A N97284108 277,546 123,271 79.90 7,283 115.28 0.0290
2017-05-05 2017-03-31 13F YANDEX N V SHS CLASS A N97284108 154,275 -821 -0.53 3,383 8.36 0.0148
2017-02-02 2016-12-31 13F YANDEX N V SHS CLASS A N97284108 155,096 78,506 102.50 3,122 93.55 0.0151
2016-11-04 2016-09-30 13F YANDEX N V SHS CLASS A N97284108 76,590 65,186 571.61 1,613 547.79 0.0082
2016-08-11 2016-06-30 13F YANDEX N V SHS CLASS A N97284108 11,404 5,980 110.25 249 200.00 0.0015
2016-05-10 2016-03-31 13F/A-1 YANDEX N V SHS CLASS A N97284108 5,424 -712 -11.60 83 -13.54 0.0005
2016-02-03 2015-12-31 13F YANDEX N V SHS CLASS A N97284108 6,136 1,245 25.45 96 81.13 0.0006
2015-11-02 2015-09-30 13F/A-1 YANDEX N V SHS CLASS A N97284108 4,891 2,099 75.18 53 23.26 0.0005
2015-10-30 2015-09-30 13F YANDEX N V SHS CLASS A N97284108 4,891 53
2015-08-07 2015-06-30 13F/A-1 YANDEX N V SHS CLASS A N97284108 2,792 -166 -5.61 43 0.00 0.0004
2015-08-04 2015-06-30 13F YANDEX N V SHS CLASS A N97284108 2,792 -166 43 0.0004
2015-05-14 2015-03-31 13F/A-1 YANDEX N V SHS CLASS A N97284108 2,958 -101,031 -97.16 43 -97.70 0.0004
2015-05-01 2015-03-31 13F YANDEX N V SHS CLASS A N97284108 2,958 43
2015-02-10 2014-12-31 13F YANDEX N V SHS CLASS A N97284108 103,989 103,989 1,868 0.0165
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.