Nebius Group N.V.
US ˙ NasdaqGS ˙ NL0009805522

SecurityNBIS / Nebius Group N.V.
InstitutionWalleye Capital LLC
Latest Disclosed Ownership37,073 shares
Latest Disclosed Value $ 3,846,694
Walleye Capital LLC ownership in NBIS / Nebius Group N.V.

On May 13, 2026 - Walleye Capital LLC filed a 13F-HR/A form disclosing ownership of 37,073 shares of Nebius Group N.V. (US:NBIS) valued at $3,846,694 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 92,504 shares of Nebius Group N.V.. This represents a change in shares of -59.92% during the quarter. The current value of the position is $8,445,600 USD.

Walleye Capital LLC has a history of taking positions in derivatives of the underlying security (NBIS) in the form of stock options. The firm currently holds call options representing 14,100 of underlying shares valued at $1,463,016 USD and put options representing 33,200 of underlying shares valued at $3,444,832 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.

NBIS / Nebius Group N.V. 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)
2026-05-13 2026-03-31 13F/A-1 NEBIUS GROUP N.V. SHS CLASS A N97284108 37,073 -55,431 -59.92 3,847 -50.33 0.0160
2026-05-08 2026-03-31 13F NEBIUS GROUP N.V. SHS CLASS A N97284108 37,073 -55,431 3,847 0.0160
2026-02-13 2025-12-31 13F NEBIUS GROUP N.V. SHS CLASS A N97284108 92,504 91,825 13,523.56 7,743 10,088.16 0.0238
2025-11-14 2025-09-30 13F NEBIUS GROUP N.V. SHS CLASS A N97284108 679 0 0.00 76 105.41 0.0003
2025-08-13 2025-06-30 13F NEBIUS GROUP N.V. SHS CLASS A N97284108 679 0 0.00 38 164.29 0.0001
2025-05-14 2025-03-31 13F NEBIUS GROUP N.V. SHS CLASS A N97284108 679 0 0.00 14 -22.22 0.0001
2025-02-13 2024-12-31 13F NEBIUS GROUP N.V. SHS CLASS A N97284108 679 -153,465 -99.56 19 -98.94 0.0000
2024-11-14 2024-09-30 13F NEBIUS GROUP N.V. SHS CLASS A N97284108 154,144 0 0.00 1,696 0.00 0.0035
2024-08-14 2024-06-30 13F YANDEX N V SHS CLASS A N97284108 154,144 0 0.00 1,696 0.00 0.0030
2024-05-15 2024-03-31 13F YANDEX N V SHS CLASS A N97284108 154,144 0 0.00 1,696 -41.93 0.0030
2024-02-14 2023-12-31 13F YANDEX N V SHS CLASS A N97284108 154,144 0 0.00 2,919 0.00 0.0062
2023-11-21 2023-09-30 13F/A-1 YANDEX N V SHS CLASS A N97284108 154,144 0 0.00 2,919 0.00 0.0075
2023-11-14 2023-09-30 13F YANDEX N V SHS CLASS A N97284108 154,144 0 2,919 0.0075
2023-08-14 2023-06-30 13F YANDEX N V SHS CLASS A N97284108 154,144 0 0.00 2,919 0.00 0.0106
2023-05-15 2023-03-31 13F YANDEX N V SHS CLASS A N97284108 154,144 0 0.00 2,919 0.00 0.0437
2023-02-14 2022-12-31 13F YANDEX N V SHS CLASS A N97284108 154,144 0 0.00 2,919 0.00 0.0532
2022-11-14 2022-09-30 13F YANDEX N V SHS CLASS A N97284108 154,144 0 0.00 2,919 0.00 0.0557
2022-08-19 2022-06-30 13F/A-1 YANDEX N V SHS CLASS A N97284108 154,144 0 0.00 2,919 0.00 0.0804
2022-08-08 2022-06-30 13F YANDEX N V SHS CLASS A N97284108 154,144 0 2,919 0.0804
2022-05-27 2022-03-31 13F/A-01 YANDEX N V SHS CLASS A N97284108 154,144 154,144 2,919 0.0780
2022-05-16 2022-03-31 13F YANDEX N V SHS CLASS A N97284108 154,144 154,144 2,919 0.0594
2019-11-14 2019-09-30 13F YANDEX N V SHS CLASS A N97284108 0 -3,700 -100.00 0 -100.00
2019-08-14 2019-06-30 13F YANDEX N V SHS CLASS A N97284108 3,700 3,700 141 0.0155
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
(%)
2026-05-13 2026-03-31 13F/A NEBIUS GROUP N.V. SHS CLASS A Call 14,100 -84.54 1,463 -80.83 n/a n/a n/a
2026-05-08 2026-03-31 13F NEBIUS GROUP N.V. SHS CLASS A Call 14,100 1,463 n/a n/a n/a
2026-02-13 2025-12-31 13F NEBIUS GROUP N.V. SHS CLASS A Call 91,200 -36.45 7,634 -52.62 n/a n/a n/a
2025-11-14 2025-09-30 13F NEBIUS GROUP N.V. SHS CLASS A Call 143,500 -19.25 16,111 63.85 n/a n/a n/a
2025-08-13 2025-06-30 13F NEBIUS GROUP N.V. SHS CLASS A Call 177,700 4,234.15 9,832 11,332.56 n/a n/a n/a
2025-05-14 2025-03-31 13F NEBIUS GROUP N.V. SHS CLASS A Call 4,100 -88.89 87 -91.59 n/a n/a n/a
2025-02-13 2024-12-31 13F NEBIUS GROUP N.V. SHS CLASS A Call 36,900 1,022 n/a n/a n/a
2019-11-14 2019-09-30 13F YANDEX N V SHS CLASS A Call 0 -100.00 0 -100.00 n/a n/a n/a
2019-08-14 2019-06-30 13F YANDEX N V SHS CLASS A Call 1,000 38 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
(%)
2026-05-13 2026-03-31 13F/A NEBIUS GROUP N.V. SHS CLASS A Put 33,200 -75.13 3,445 -69.18 n/a n/a n/a
2026-05-08 2026-03-31 13F NEBIUS GROUP N.V. SHS CLASS A Put 33,200 3,445 n/a n/a n/a
2026-02-13 2025-12-31 13F NEBIUS GROUP N.V. SHS CLASS A Put 133,500 -13.82 11,175 -35.74 n/a n/a n/a
2025-11-14 2025-09-30 13F NEBIUS GROUP N.V. SHS CLASS A Put 154,900 48.66 17,391 201.65 n/a n/a n/a
2025-08-13 2025-06-30 13F NEBIUS GROUP N.V. SHS CLASS A Put 104,200 1,327.40 5,765 3,643.51 n/a n/a n/a
2025-05-14 2025-03-31 13F NEBIUS GROUP N.V. SHS CLASS A Put 7,300 154 n/a n/a n/a
2019-11-14 2019-09-30 13F YANDEX N V SHS CLASS A Put 0 -100.00 0 -100.00 n/a n/a n/a
2019-08-14 2019-06-30 13F YANDEX N V SHS CLASS A Put 1,500 57 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.