XBiotech Inc.
DE ˙ DB ˙ CA98400H1029
1,91 € ↓ -0,13 (-6,24%)
2026-06-04
AKTIENPREIS
SecurityDE:4XB / XBiotech Inc.
InstitutionMorgan Stanley
Latest Disclosed Ownership165,554 shares
Latest Disclosed Value $ 389,052
Morgan Stanley reports 1.31% increase in ownership of 4XB / XBiotech Inc.

On May 15, 2026 - Morgan Stanley filed a 13F-HR form disclosing ownership of 165,554 shares of XBiotech Inc. (DE:4XB) valued at $306,275 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on May 27, 2026 disclosing 163,419 shares of XBiotech Inc.. This represents a change in shares of 1.31% during the quarter. The current value of the position is $315,877 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)
2026-05-15 2026-03-31 13F XBIOTECH COM 98400H102 165,554 2,135 1.31 389 -0.26 0.0000
2026-05-27 2025-12-31 13F/A-1 XBIOTECH COM 98400H102 163,419 41,966 34.55 391 20.74 0.0000
2026-02-13 2025-12-31 13F XBIOTECH COM 98400H102 163,419 41,966 391 0.0000
2026-05-27 2025-09-30 13F/A-1 XBIOTECH COM 98400H102 121,453 35,648 41.55 323 27.17 0.0000
2025-11-14 2025-09-30 13F XBIOTECH COM 98400H102 121,453 35,648 323 0.0000
2025-08-15 2025-06-30 13F XBIOTECH COM 98400H102 85,805 -19,692 -18.67 255 -25.51 0.0000
2025-05-15 2025-03-31 13F XBIOTECH COM 98400H102 105,497 -16,893 -13.80 342 -29.40 0.0000
2025-05-15 2024-12-31 13F/A-1 XBIOTECH COM 98400H102 122,390 -9,299 -7.06 483 -52.51 0.0000
2025-02-14 2024-12-31 13F XBIOTECH COM 98400H102 122,390 -9,299 483 0.0000
2025-05-14 2024-09-30 13F/A-2 XBIOTECH COM 98400H102 131,689 31,138 30.97 1,018 97.09 0.0001
2025-02-14 2024-09-30 13F/A-1 XBIOTECH COM 98400H102 131,689 31,138 1,018 0.0001
2024-11-14 2024-09-30 13F XBIOTECH COM 98400H102 131,689 31,138 1,018 0.0000
2025-05-14 2024-06-30 13F/A-2 XBIOTECH COM 98400H102 100,551 -15,776 -13.56 517 -45.40 0.0000
2024-10-17 2024-06-30 13F/A-1 XBIOTECH COM 98400H102 100,551 -15,776 517 0.0000
2024-08-14 2024-06-30 13F XBIOTECH COM 98400H102 100,551 -15,776 517 0.0000
2024-10-17 2024-03-31 13F/A-2 XBIOTECH COM 98400H102 116,327 5,810 5.26 946 113.80 0.0001
2024-08-16 2024-03-31 13F/A-1 XBIOTECH COM 98400H102 116,327 5,810 946 0.0001
2024-05-15 2024-03-31 13F XBIOTECH COM 98400H102 116,327 5,810 946 0.0001
2024-08-16 2023-12-31 13F/A-1 XBIOTECH COM 98400H102 110,517 23,290 26.70 442 23.12 0.0000
2024-02-13 2023-12-31 13F XBIOTECH COM 98400H102 110,517 23,290 442 0.0000
2023-11-15 2023-09-30 13F XBIOTECH COM 98400H102 87,227 3,331 3.97 359 -27.91 0.0000
2023-08-14 2023-06-30 13F XBIOTECH COM 98400H102 83,896 -3,411 -3.91 498 65.45 0.0000
2023-05-15 2023-03-31 13F XBIOTECH COM 98400H102 87,307 -11,050 -11.23 301 -12.75 0.0000
2023-02-14 2022-12-31 13F XBIOTECH COM 98400H102 98,357 -14,801 -13.08 345 -15.65 0.0000
2022-11-14 2022-09-30 13F XBIOTECH COM 98400H102 113,158 -88,640 -43.93 409 -63.93 0.0001
2022-10-27 2022-06-30 13F/A-1 XBIOTECH COM 98400H102 201,798 165,382 454.15 1,134 260.00 0.0001
2022-08-15 2022-06-30 13F XBIOTECH COM 98400H102 201,798 165,382 1,134 0.0001
2022-10-27 2022-03-31 13F/A-1 XBIOTECH COM 98400H102 36,416 15,428 73.51 315 34.62 0.0000
2022-05-13 2022-03-31 13F XBIOTECH COM 98400H102 36,416 15,428 315 0.0000
2022-02-14 2021-12-31 13F XBIOTECH COM 98400H102 20,988 8,642 70.00 234 47.17 0.0000
2021-11-15 2021-09-30 13F XBIOTECH COM 98400H102 12,346 -645 -4.96 159 -26.05 0.0000
2021-08-23 2021-06-30 13F/A-1 XBIOTECH COM 98400H102 12,991 11,411 722.22 215 696.30 0.0000
2021-08-16 2021-06-30 13F XBIOTECH COM 98400H102 12,991 11,411 215 0.0000
2021-05-17 2021-03-31 13F XBIOTECH COM 98400H102 1,580 -10,868 -87.31 27 -86.08 0.0000
2021-02-16 2020-12-31 13F XBIOTECH COM 98400H102 12,448 6,564 111.56 194 73.21 0.0000
2020-11-13 2020-09-30 13F XBIOTECH COM 98400H102 5,884 -1,540 -20.74 112 9.80 0.0000
2020-08-14 2020-06-30 13F XBIOTECH COM 98400H102 7,424 -1,022 -12.10 102 14.61 0.0000
2020-05-26 2020-03-31 13F/A-1 XBIOTECH COM 98400H102 8,446 -17,132 -66.98 89 -81.34 0.0000
2020-05-15 2020-03-31 13F XBIOTECH COM 98400H102 8,446 -17,132 89 6.8371
2020-02-14 2019-12-31 13F XBIOTECH COM 98400H102 25,578 20,584 412.17 477 817.31 0.0001
2019-11-14 2019-09-30 13F XBIOTECH COM 98400H102 4,994 4,956 13,042.11 52 -89.10 0.0000
2019-08-14 2019-06-30 13F XBIOTECH COM 98400H102 38 -8,788 -99.57 0 -100.00
2019-05-15 2019-03-31 13F XBIOTECH COM 98400H102 8,826 8,826 23,126.32 97 0.0000
2018-11-20 2018-09-30 13F/A-1 XBIOTECH COM 98400H102 0 -13,720 -100.00 0 -100.00
2019-04-23 2018-06-30 13F/A-1 XBIOTECH COM 98400H102 13,720 -28,218 -67.29 61 -72.77 0.0000
2018-08-14 2018-06-30 13F XBIOTECH COM 98400H102 13,720 -28,218 61
2019-04-23 2018-03-31 13F/A-1 XBIOTECH COM 98400H102 41,938 2,473 6.27 224 44.52 0.0001
2018-05-14 2018-03-31 13F XBIOTECH COM 98400H102 41,938 2,473 224
2019-04-23 2017-12-31 13F/A-1 XBIOTECH COM 98400H102 39,465 14,992 61.26 155 44.86 0.0000
2018-02-14 2017-12-31 13F XBIOTECH COM 98400H102 39,465 14,992 155
2017-11-14 2017-09-30 13F XBIOTECH COM 98400H102 24,473 4,531 22.72 107 13.83 0.0000
2017-08-11 2017-06-30 13F XBIOTECH COM 98400H102 19,942 -7,003 -25.99 94 -78.83 0.0000
2017-05-22 2017-03-31 13F/A-1 XBIOTECH COM 98400H102 26,945 -34,694 -56.29 444 -28.85 0.0001
2017-05-12 2017-03-31 13F XBIOTECH COM 98400H102 26,945 444
2017-02-22 2016-12-31 13F/A-1 XBIOTECH COM 98400H102 61,639 45,321 277.74 624 184.93 0.0002
2017-02-13 2016-12-31 13F XBIOTECH COM 98400H102 61,639 624
2016-11-10 2016-09-30 13F XBIOTECH COM 98400H102 16,318 282 1.76 219 -34.82 0.0001
2016-08-12 2016-06-30 13F XBIOTECH COM 98400H102 16,036 5,627 54.06 336 242.86 0.0001
2016-05-12 2016-03-31 13F XBIOTECH COM 98400H102 10,409 -6,739 -39.30 98 -47.31 0.0000
2016-02-09 2015-12-31 13F XBIOTECH COM 98400H102 17,148 10,268 149.24 186 82.35 0.0001
2016-02-08 2015-09-30 13F/A-1 XBIOTECH COM 98400H102 6,880 -12,971 -65.34 102 -71.51 0.0000
2015-11-09 2015-09-30 13F XBIOTECH COM 98400H102 6,880 102
2015-08-12 2015-06-30 13F XBIOTECH COM 98400H102 19,851 19,851 358 0.0001
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.