BWX Technologies, Inc.
DE ˙ DB ˙ US05605H1005
160,85 € ↑3,20 (2,03%)
2026-06-05
DEL PRIS
SecurityDE:4BW / BWX Technologies, Inc.
InstitutionBnp Paribas Arbitrage, Sa
Latest Disclosed Ownership202,765 shares
Latest Disclosed Value $ 41,463,415
Bnp Paribas Arbitrage, Sa reports 8.35% increase in ownership of 4BW / BWX Technologies, Inc.

On May 12, 2026 - Bnp Paribas Arbitrage, Sa filed a 13F-HR form disclosing ownership of 202,765 shares of BWX Technologies, Inc. (DE:4BW) valued at $35,889,405 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 187,137 shares of BWX Technologies, Inc.. This represents a change in shares of 8.35% during the quarter. The current value of the position is $32,614,750 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-12 2026-03-31 13F BWX Technologies Equity 05605H100 202,765 15,628 8.35 41,463 28.19 0.0021
2026-02-10 2025-12-31 13F BWX Technologies Equity 05605H100 187,137 69,556 59.16 32,345 49.20 0.0147
2025-11-13 2025-09-30 13F BWX Technologies Equity 05605H100 117,581 77,585 193.98 21,678 276.29 0.0116
2025-08-14 2025-06-30 13F BWX Technologies Equity 05605H100 39,996 -161,646 -80.16 5,762 -71.04 0.0033
2025-05-14 2025-03-31 13F BWX Technologies Equity 05605H100 201,642 111,266 123.11 19,892 97.61 0.0117
2025-02-14 2024-12-31 13F BWX Technologies Equity 05605H100 90,376 43,772 93.92 10,067 98.74 0.0056
2024-11-13 2024-09-30 13F BWX Technologies Equity 05605H100 46,604 -4,415 -8.65 5,066 4.52 0.0034
2024-08-13 2024-06-30 13F BWX Technologies Equity 05605H100 51,019 -564 -1.09 4,847 -8.45 0.0039
2024-05-01 2024-03-31 13F BWX Technologies Equity 05605H100 51,583 -20,218 -28.16 5,293 -3.92 0.0046
2024-02-14 2023-12-31 13F/A-2 BWX Technologies Equity 05605H100 71,801 36,679 104.43 5,509 109.23 0.0063
2024-02-07 2023-12-31 13F/A-1 BWX Technologies Equity 05605H100 71,801 36,679 5,509 0.0008
2024-02-07 2023-12-31 13F BWX Technologies Equity 05605H100 71,801 5,509
2023-11-14 2023-09-30 13F BWX Technologies Equity 05605H100 35,122 5,130 17.10 2,633 22.69 0.0034
2023-08-09 2023-06-30 13F BWX Technologies Equity 05605H100 29,992 -6,203 -17.14 2,147 -5.92 0.0027
2023-05-12 2023-03-31 13F BWX TECHNOLOGIES EQUITY 05605H100 36,195 -9,501 -20.79 2,282 -14.05 0.0032
2023-02-14 2022-12-31 13F BWX Technologies Equity 05605H100 45,696 -33,683 -42.43 2,654 -33.62 0.0041
2022-11-16 2022-09-30 13F/A-1 BWX Technologies Equity 05605H100 79,379 32,647 69.86 3,998 55.32 0.0064
2022-11-15 2022-09-30 13F BWX Technologies Equity 05605H100 79,379 32,647 3,998 0.0010
2022-08-12 2022-06-30 13F BWX Technologies Equity 05605H100 46,732 -37,112 -44.26 2,574 -42.99 0.0040
2022-05-18 2022-03-31 13F/A-1 BWX Technologies Equity 05605H100 83,844 -64,114 -43.33 4,516 -36.26 0.0061
2022-02-09 2021-12-31 13F BWX TECHNOLOGIES EQUITY 05605H100 147,958 51,157 52.85 7,084 35.89 0.0101
2021-11-16 2021-09-30 13F/A-1 BWX TECHNOLOGIES EQUITY 05605H100 96,801 9,600 11.01 5,214 2.86 0.0074
2021-11-12 2021-09-30 13F BWX TECHNOLOGIES EQUITY 05605H100 5,082 -82,119 286 0.0000
2021-08-10 2021-06-30 13F BWX TECHNOLOGIES EQUITY 05605H100 87,201 32,819 60.35 5,068 41.37 0.0067
2021-05-07 2021-03-31 13F BWX TECHNOLOGIES EQUITY 05605H100 54,382 43,932 420.40 3,586 469.95 0.0052
2021-02-10 2020-12-31 13F BWX TECHNOLOGIES EQUITY 05605H100 10,450 5,368 105.63 630 119.93 0.0012
2020-10-30 2020-09-30 13F BWX TECHNOLOGIES EQUITY 05605H100 5,082 -60,545 -92.26 286 -92.31 0.0004
2020-08-06 2020-06-30 13F BWX TECHNOLOGIES EQUITY 05605H100 65,627 56,847 647.46 3,717 770.49 0.0066
2020-05-13 2020-03-31 13F BWX TECHNOLOGIES EQUITY 05605H100 8,780 -1,173 -11.79 428 -30.79 0.0009
2020-02-12 2019-12-31 13F BWX TECHNOLOGIES EQUITY 05605H100 9,953 4,117 70.54 618 85.29 0.0011
2019-11-07 2019-09-30 13F BWX TECHNOLOGIES EQUITY 05605H100 5,836 -140 -2.34 334 7.07 0.0006
2019-07-30 2019-06-30 13F BWX TECHNOLOGIES EQUITY 05605H100 5,976 -2,578 -30.14 311 -26.65 0.0006
2019-04-25 2019-03-31 13F BWX TECHNOLOGIES EQUITY 05605H100 8,554 897 11.71 424 45.21 0.0009
2019-02-12 2018-12-31 13F BWX TECHNOLOGIES EQUITY 05605H100 7,657 2,815 58.14 293 -3.31 0.0007
2018-11-07 2018-09-30 13F BWX TECHNOLOGIES EQUITY 05605H100 4,842 578 13.56 303 13.96 0.0004
2018-07-25 2018-06-30 13F BWX TECHNOLOGIES EQUITY 05605H100 4,264 1,807 73.54 266 69.87 0.0004
2018-05-11 2018-03-31 13F BWX TECHNOLOGIES EQUITY 05605H100 2,457 -7,144 -74.41 156 -73.10 0.0003
2018-03-05 2017-12-31 13F/A-1 BWX TECHNOLOGIES EQUITY 05605H100 9,601 -183,734 -95.03 581 -94.64 0.0010
2018-02-01 2017-12-31 13F BWX TECHNOLOGIES EQUITY 05605H100 9,601 -183,734 581
2017-11-03 2017-09-30 13F BWX TECHNOLOGIES STOCK 05605H100 193,335 -211,388 -52.23 10,831 -45.11 0.0265
2017-08-03 2017-06-30 13F BWX TECHNOLOGIES STOCK 05605H100 404,723 395,751 4,410.96 19,730 4,520.61 0.0595
2017-05-03 2017-03-31 13F BWX TECHNOLOGIES STOCK 05605H100 8,972 3,711 70.54 427 105.29 0.0011
2017-02-14 2016-12-31 13F BWX TECHNOLOGIES STOCK 05605H100 5,261 88 1.70 209 5.05 0.0010
2016-10-05 2016-09-30 13F * BWX TECHNOLOGIES INC COM STOCK 05605H100 5,173 2,386 85.61 198 100.00 0.0008
2016-07-06 2016-06-30 13F * BWX TECHNOLOGIES INC COM STOCK 05605H100 2,787 -964 -25.70 100 -20.80 0.0004
2016-04-22 2016-03-31 13F * BWX TECHNOLOGIES INC COM STOCK 05605H100 3,751 737 24.45 126 31.58 0.0005
2016-04-19 2015-12-31 13F/A-1 * BWX TECHNOLOGIES INC COM STOCK 05605H100 3,014 -242 -7.43 96 11.76 0.0005
2016-02-10 2015-12-31 13F * BWX TECHNOLOGIES INC COM STOCK 05605H100 3,014 96
2015-11-13 2015-09-30 13F * BWX TECHNOLOGIES INC COM STOCK 05605H100 3,256 -501 -13.34 86 -30.89 0.0002
2015-08-14 2015-06-30 13F BABCOCK AND WILCOX CO NEW COM STOCK 05615F102 3,757 1,282 51.80 123 55.70 0.0003
2015-05-15 2015-03-31 13F * BABCOCK AND WILCOX CO NEW COM STOCK 05615F102 2,475 -11,678 -82.51 79 -81.54 0.0002
2015-03-10 2014-12-31 13F/A-1 * BABCOCK AND WILCOX CO NEW COM STOCK 05615F102 14,153 5,821 69.86 429 86.09 0.0015
2015-02-11 2014-12-31 13F * BABCOCK AND WILCOX CO NEW COM STOCK 05615F102 14,153 429
2014-11-12 2014-09-30 13F * BABCOCK AND WILCOX CO NEW COM STOCK 05615F102 8,332 -2,596 -23.76 231 -35.03 0.0002
2014-08-14 2014-06-30 13F/A-1 * BABCOCK AND WILCOX CO NEW COM STOCK 05615F102 10,928 1,822 20.01 355 12.03 0.0003
2014-08-14 2014-06-30 13F BABCOCK AND WILCOX CO NEW COM STOCK 05615F102 10,928 355
2014-05-13 2014-03-31 13F BABCOCK AND WILCOX CO STOCK 05615F102 9,106 8,116 819.80 317 857.58 0.0002
2014-04-02 2013-12-31 13F/A-1 BABCOCK AND WILCOX CO STOCK 05615F102 990 990 34 0.0000
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.