BWX Technologies, Inc.
MX ˙ BMV ˙ US05605H1005
SecurityMX:BWXT / BWX Technologies, Inc.
InstitutionDimensional Fund Advisors Lp
Latest Disclosed Ownership696,488 shares
Latest Disclosed Value $ 142,424,847
Dimensional Fund Advisors Lp reports 11.32% decrease in ownership of BWXT / BWX Technologies, Inc.

On May 7, 2026 - Dimensional Fund Advisors Lp filed a 13F-HR form disclosing ownership of 696,488 shares of BWX Technologies, Inc. (MX:BWXT) valued at $142,424,847 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 785,420 shares of BWX Technologies, Inc.. This represents a change in shares of -11.32% 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)
2026-05-07 2026-03-31 13F BWX TECHNOLOGIES COM 05605H100 696,488 -88,932 -11.32 142,425 4.91 0.0296
2026-02-12 2025-12-31 13F BWX TECHNOLOGIES COM 05605H100 785,420 -60,492 -7.15 135,752 -12.96 0.0285
2025-11-12 2025-09-30 13F BWX TECHNOLOGIES COM 05605H100 845,912 -259,816 -23.50 155,961 -2.09 0.0335
2025-08-12 2025-06-30 13F BWX TECHNOLOGIES COM 05605H100 1,105,728 -105,896 -8.74 159,291 33.27 0.0369
2025-05-13 2025-03-31 13F BWX TECHNOLOGIES COM 05605H100 1,211,624 128,791 11.89 119,522 -0.91 0.0297
2025-02-13 2024-12-31 13F BWX TECHNOLOGIES COM 05605H100 1,082,833 -209,026 -16.18 120,622 -14.10 0.0290
2024-11-07 2024-09-30 13F BWX TECHNOLOGIES COM 05605H100 1,291,859 -51,217 -3.81 140,425 10.06 0.0341
2024-08-09 2024-06-30 13F BWX TECHNOLOGIES COM 05605H100 1,343,076 77,237 6.10 127,593 -1.78 0.0333
2024-05-10 2024-03-31 13F BWX TECHNOLOGIES COM 05605H100 1,265,839 -6,745 -0.53 129,900 33.03 0.0352
2024-02-07 2023-12-31 13F BWX TECHNOLOGIES COM 05605H100 1,272,584 -47,472 -3.60 97,645 -1.35 0.0285
2023-11-09 2023-09-30 13F BWX TECHNOLOGIES COM 05605H100 1,320,056 104,390 8.59 98,979 13.76 0.0325
2023-08-09 2023-06-30 13F BWX TECHNOLOGIES COM 05605H100 1,215,666 7,671 0.64 87,005 14.25 0.0277
2023-05-12 2023-03-31 13F BWX TECHNOLOGIES COM 05605H100 1,207,995 50,182 4.33 76,150 113,556.72 0.0257
2023-02-09 2022-12-31 13F BWX TECHNOLOGIES COM 05605H100 1,157,813 25,603 2.26 67 -99.88 0.0199
2022-11-10 2022-09-30 13F BWX TECHNOLOGIES COM 05605H100 1,132,210 178,139 18.67 57,032 8.53 0.0219
2022-08-12 2022-06-30 13F BWX TECHNOLOGIES COM 05605H100 954,071 57,321 6.39 52,550 8.79 0.0188
2022-05-13 2022-03-31 13F BWX TECHNOLOGIES COM 05605H100 896,750 37,558 4.37 48,304 17.42 0.0149
2022-02-09 2021-12-31 13F BWX TECHNOLOGIES COM 05605H100 859,192 2,746 0.32 41,138 -10.82 0.0124
2021-11-12 2021-09-30 13F BWX TECHNOLOGIES COM 05605H100 856,446 37,984 4.64 46,131 -3.02 0.0149
2021-08-12 2021-06-30 13F BWX TECHNOLOGIES COM 05605H100 818,462 58,746 7.73 47,567 -5.05 0.0151
2021-05-14 2021-03-31 13F BWX TECHNOLOGIES COM 05605H100 759,716 20,302 2.75 50,096 12.39 0.0166
2021-03-08 2020-12-31 13F/A-2 BWX TECHNOLOGIES COM 05605H100 739,414 74,394 11.19 44,572 19.01 0.0161
2021-02-11 2020-12-31 13F BWX TECHNOLOGIES COM 05605H100 739,414 74,394 44,572 16,097.0373
2020-11-12 2020-09-30 13F BWX TECHNOLOGIES COM 05605H100 665,020 -14,800 -2.18 37,452 -2.73 0.0159
2020-08-13 2020-06-30 13F BWX TECHNOLOGIES COM 05605H100 679,820 31,410 4.84 38,502 21.94 0.0169
2020-05-14 2020-03-31 13F BWX TECHNOLOGIES COM 05605H100 648,410 -46,100 -6.64 31,575 -26.77 0.0164
2020-02-14 2019-12-31 13F BWX TECHNOLOGIES COM 05605H100 694,510 -7,336 -1.05 43,118 7.38 0.0157
2019-11-12 2019-09-30 13F BWX TECHNOLOGIES COM 05605H100 701,846 -39,358 -5.31 40,156 3.99 0.0156
2019-08-13 2019-06-30 13F BWX TECHNOLOGIES COM 05605H100 741,204 -19,179 -2.52 38,614 2.42 0.0150
2019-08-12 2019-03-31 13F/A-2 BWX TECHNOLOGIES COM 05605H100 760,383 -29,632 -3.75 37,700 24.84 0.0150
2019-05-10 2019-03-31 13F BWX TECHNOLOGIES COM 05605H100 760,383 -29,632 37,700
2019-02-26 2018-12-31 13F/A-1 BWX TECHNOLOGIES COM 05605H100 790,015 37,699 5.01 30,199 -35.81 0.0137
2019-02-13 2018-12-31 13F BWX TECHNOLOGIES COM 05605H100 790,015 37,699 30,199
2018-11-13 2018-09-30 13F BWX TECHNOLOGIES COM 05605H100 752,316 8,418 1.13 47,047 1.48 0.0179
2018-08-10 2018-06-30 13F BWX TECHNOLOGIES COM 05605H100 743,898 -4,667 -0.62 46,359 -2.52 0.0185
2018-05-11 2018-03-31 13F BWX TECHNOLOGIES COM 05605H100 748,565 -8,676 -1.15 47,556 3.82 0.0198
2018-02-12 2017-12-31 13F BWX TECHNOLOGIES COM 05605H100 757,241 3,843 0.51 45,807 8.53 0.0190
2017-11-13 2017-09-30 13F BWX TECHNOLOGIES COM 05605H100 753,398 -6,894 -0.91 42,205 13.88 0.0184
2017-08-11 2017-06-30 13F BWX TECHNOLOGIES COM 05605H100 760,292 -65,229 -7.90 37,061 -5.69 0.0171
2017-05-12 2017-03-31 13F BWX TECHNOLOGIES COM 05605H100 825,521 -392,329 -32.21 39,296 -18.72 0.0188
2017-02-09 2016-12-31 13F BWX TECHNOLOGIES COM 05605H100 1,217,850 -95,847 -7.30 48,349 -4.08 0.0241
2016-11-10 2016-09-30 13F BWX TECHNOLOGIES COM 05605H100 1,313,697 -101,357 -7.16 50,407 -0.41 0.0272
2016-08-09 2016-06-30 13F BWX TECHNOLOGIES COM 05605H100 1,415,054 -17,414 -1.22 50,615 5.28 0.0291
2016-05-13 2016-03-31 13F BWX TECHNOLOGIES COM 05605H100 1,432,468 45,859 3.31 48,076 9.13 0.0288
2016-02-10 2015-12-31 13F BWX TECHNOLOGIES COM 05605H100 1,386,609 148,451 11.99 44,054 34.98 0.0275
2015-11-13 2015-09-30 13F BWX TECHNOLOGIES COM 05605H100 1,238,158 563,633 83.56 32,637 47.52 0.0214
2015-08-14 2015-06-30 13F BABCOCK & WILCOX CO COM 05615F102 674,525 -108,335 -13.84 22,124 -11.93 0.0135
2015-05-14 2015-03-31 13F BABCOCK & WILCOX CO COM 05615F102 782,860 192,205 32.54 25,120 40.36 0.0159
2015-02-06 2014-12-31 13F BABCOCK & WILCOX CO COM 05615F102 590,655 168,960 40.07 17,897 53.25 0.0118
2014-11-13 2014-09-30 13F BABCOCK & WILCOX CO COM 05615F102 421,695 36,999 9.62 11,678 -6.47 0.0083
2014-08-08 2014-06-30 13F BABCOCK & WILCOX CO COM 05615F102 384,696 75,518 24.43 12,486 21.66 0.0087
2014-05-14 2014-03-31 13F BABCOCK & WILCOX CO COM 05615F102 309,178 6,744 2.23 10,263 -0.75 0.0077
2014-02-12 2013-12-31 13F BABCOCK & WILCOX CO COM 05615F102 302,434 5,205 1.75 10,341 3.17 0.0081
2013-11-13 2013-09-30 13F BABCOCK & WILCOX CO COM 05615F102 297,229 15,964 5.68 10,023 18.66 0.0087
2013-08-15 2013-06-30 13F BABCOCK & WILCOX CO COM 05615F102 281,265 281,265 8,447 0.0080
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.