BWX 技術公司
MX ˙ BMV ˙ US05605H1005
SecurityMX:BWXT / BWX Technologies, Inc.
InstitutionAlliancebernstein L.p.
Latest Disclosed Ownership580,229 shares
Latest Disclosed Value $ 100,286,780
Alliancebernstein L.p. reports 2.82% increase in ownership of BWXT / BWX Technologies, Inc.

On May 15, 2026 - Alliancebernstein L.p. filed a 13F-HR form disclosing ownership of 580,229 shares of BWX Technologies, Inc. (MX:BWXT) valued at $100,286,780 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 564,298 shares of BWX Technologies, Inc.. This represents a change in shares of 2.82% during the quarter.

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 BWX TECHNOLOGIES COM 05605H100 580,229 15,931 2.82 100,287 2.82 0.0325
2026-02-17 2025-12-31 13F BWX TECHNOLOGIES COM 05605H100 564,298 -66,663 -10.57 97,533 -16.16 0.0308
2025-11-14 2025-09-30 13F BWX TECHNOLOGIES COM 05605H100 630,961 -85,060 -11.88 116,330 12.78 0.0366
2025-08-14 2025-06-30 13F BWX TECHNOLOGIES COM 05605H100 716,021 -102,397 -12.51 103,150 27.76 0.0336
2025-05-15 2025-03-31 13F BWX TECHNOLOGIES COM 05605H100 818,418 19,639 2.46 80,737 -9.26 0.0292
2025-02-12 2024-12-31 13F BWX TECHNOLOGIES COM 05605H100 798,779 -73,418 -8.42 88,976 -6.15 0.0302
2024-11-14 2024-09-30 13F BWX TECHNOLOGIES COM 05605H100 872,197 -52,849 -5.71 94,808 7.88 0.0318
2024-08-14 2024-06-30 13F BWX TECHNOLOGIES COM 05605H100 925,046 40,253 4.55 87,879 -3.21 0.0306
2024-05-14 2024-03-31 13F BWX TECHNOLOGIES COM 05605H100 884,793 246,664 38.65 90,797 85.44 0.0321
2024-02-14 2023-12-31 13F BWX TECHNOLOGIES COM 05605H100 638,129 505,473 381.04 48,964 392.29 0.0188
2023-11-14 2023-09-30 13F BWX TECHNOLOGIES COM 05605H100 132,656 -3,546 -2.60 9,947 2.04 0.0042
2023-08-15 2023-06-30 13F BWX TECHNOLOGIES COM 05605H100 136,202 95,892 237.89 9,748 283.59 0.0040
2023-05-15 2023-03-31 13F BWX TECHNOLOGIES COM 05605H100 40,310 -1,414 -3.39 2,541 4.87 0.0011
2023-02-15 2022-12-31 13F BWX TECHNOLOGIES COM 05605H100 41,724 -1,629 -3.76 2,423 10.94 0.0011
2022-11-15 2022-09-30 13F BWX TECHNOLOGIES COM 05605H100 43,353 -42 -0.10 2,184 -8.66 0.0011
2022-08-15 2022-06-30 13F BWX TECHNOLOGIES COM 05605H100 43,395 -118,054 -73.12 2,391 -72.50 0.0011
2022-05-13 2022-03-31 13F BWX TECHNOLOGIES COM 05605H100 161,449 117,066 263.76 8,696 309.22 0.0034
2022-02-14 2021-12-31 13F BWX TECHNOLOGIES COM 05605H100 44,383 -3,069 -6.47 2,125 -16.86 0.0008
2021-11-10 2021-09-30 13F BWX TECHNOLOGIES COM 05605H100 47,452 -571 -1.19 2,556 -8.42 0.0010
2021-07-30 2021-06-30 13F BWX TECHNOLOGIES COM 05605H100 48,023 -2,127 -4.24 2,791 -15.60 0.0011
2021-05-06 2021-03-31 13F BWX TECHNOLOGIES COM 05605H100 50,150 100 0.20 3,307 9.61 0.0015
2021-02-08 2020-12-31 13F BWX TECHNOLOGIES COM 05605H100 50,050 -350 -0.69 3,017 6.31 0.0014
2020-11-12 2020-09-30 13F BWX TECHNOLOGIES COM 05605H100 50,400 1,599 3.28 2,838 2.68 0.0015
2020-08-13 2020-06-30 13F BWX TECHNOLOGIES COM 05605H100 48,801 4,351 9.79 2,764 27.67 0.0016
2020-05-14 2020-03-31 13F BWX TECHNOLOGIES COM 05605H100 44,450 -7,795 -14.92 2,165 -33.24 0.0016
2020-02-18 2019-12-31 13F BWX TECHNOLOGIES COM 05605H100 52,245 -2,665 -4.85 3,243 3.25 0.0018
2019-11-14 2019-09-30 13F BWX TECHNOLOGIES COM 05605H100 54,910 31 0.06 3,141 9.86 0.0020
2019-08-14 2019-06-30 13F BWX TECHNOLOGIES COM 05605H100 54,879 -750 -1.35 2,859 3.66 0.0018
2019-05-14 2019-03-31 13F BWX TECHNOLOGIES COM 05605H100 55,629 -950 -1.68 2,758 27.51 0.0018
2019-02-13 2018-12-31 13F BWX TECHNOLOGIES COM 05605H100 56,579 -910 -1.58 2,163 -39.83 0.0016
2018-11-08 2018-09-30 13F BWX TECHNOLOGIES COM 05605H100 57,489 -930 -1.59 3,595 -1.26 0.0023
2018-08-13 2018-06-30 13F BWX TECHNOLOGIES COM 05605H100 58,419 2,950 5.32 3,641 3.32 0.0025
2018-05-14 2018-03-31 13F BWX TECHNOLOGIES COM 05605H100 55,469 -1,126 -1.99 3,524 2.95 0.0025
2018-02-13 2017-12-31 13F BWX TECHNOLOGIES COM 05605H100 56,595 96 0.17 3,423 8.15 0.0024
2017-11-13 2017-09-30 13F BWX TECHNOLOGIES COM 05605H100 56,499 -12,129 -17.67 3,165 -5.41 0.0024
2017-08-10 2017-06-30 13F BWX TECHNOLOGIES COM 05605H100 68,628 -42,355 -38.16 3,346 -36.66 0.0026
2017-05-11 2017-03-31 13F BWX TECHNOLOGIES COM 05605H100 110,983 -7,746 -6.52 5,283 12.07 0.0042
2017-02-13 2016-12-31 13F BWX TECHNOLOGIES COM 05605H100 118,729 13,004 12.30 4,714 16.19 0.0039
2016-11-10 2016-09-30 13F BWX TECHNOLOGIES COM 05605H100 105,725 28,414 36.75 4,057 46.73 0.0034
2016-08-11 2016-06-30 13F BWX TECHNOLOGIES COM 05605H100 77,311 12,433 19.16 2,765 27.01 0.0024
2016-05-13 2016-03-31 13F BWX TECHNOLOGIES COM 05605H100 64,878 -12,840 -16.52 2,177 -11.83 0.0019
2016-02-16 2015-12-31 13F/A-1 BWX TECHNOLOGIES COM 05605H100 77,718 -1,242 -1.57 2,469 18.64 0.0021
2016-02-12 2015-12-31 13F BWX TECHNOLOGIES COM 05605H100 77,718 2,049
2015-11-13 2015-09-30 13F BWX TECHNOLOGIES COM 05605H100 78,960 -148 -0.19 2,081 -19.81 0.0018
2015-08-14 2015-06-30 13F BABCOCK & WILCOX CO COM 05615F102 79,108 -8,500 -9.70 2,595 -7.68 0.0021
2015-05-13 2015-03-31 13F BABCOCK & WILCOX COM 05615F102 87,608 -3,800 -4.16 2,811 1.48 0.0023
2015-02-13 2014-12-31 13F BABCOCK & WILCOX COM 05615F102 91,408 -9,190 -9.14 2,770 -0.57 0.0023
2014-11-13 2014-09-30 13F BABCOCK & WILCOX COM 05615F102 100,598 -69,904 -41.00 2,786 -49.66 0.0023
2014-08-13 2014-06-30 13F BABCOCK & WILCOX COM 05615F102 170,502 13,095 8.32 5,534 5.89 0.0047
2014-05-13 2014-03-31 13F BABCOCK & WILCOX COM 05615F102 157,407 4,930 3.23 5,226 0.25 0.0045
2014-02-13 2013-12-31 13F BABCOCK & WILCOX COM 05615F102 152,477 -912,692 -85.69 5,213 -85.49 0.0047
2013-11-14 2013-09-30 13F BABCOCK & WILCOX COM 05615F102 1,065,169 -89,746 -7.77 35,917 3.56 0.0355
2013-08-13 2013-06-30 13F BABCOCK & WILCOX COM 05615F102 1,154,915 1,154,915 34,682 0.0368
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.