BWX Technologies, Inc.
MX ˙ BMV ˙ US05605H1005
SecurityMX:BWXT / BWX Technologies, Inc.
InstitutionL & S Advisors Inc
Latest Disclosed Ownership15,324 shares
Latest Disclosed Value $ 3,133,639
L & S Advisors Inc reports 34.64% decrease in ownership of BWXT / BWX Technologies, Inc.

On May 11, 2026 - L & S Advisors Inc filed a 13F-HR form disclosing ownership of 15,324 shares of BWX Technologies, Inc. (MX:BWXT) valued at $3,133,639 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 23,444 shares of BWX Technologies, Inc.. This represents a change in shares of -34.64% 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)
2026-05-11 2026-03-31 13F BWX TECHNOLOGIES COM 05605H100 15,324 -8,120 -34.64 3,134 -22.68 0.3942
2026-02-05 2025-12-31 13F BWX TECHNOLOGIES COM 05605H100 23,444 -3,350 -12.50 4,052 -17.98 0.3745
2025-11-07 2025-09-30 13F BWX TECHNOLOGIES COM 05605H100 26,794 -2,103 -7.28 4,940 18.69 0.4749
2025-08-08 2025-06-30 13F BWX TECHNOLOGIES COM 05605H100 28,897 1,080 3.88 4,163 51.68 0.4121
2025-05-09 2025-03-31 13F BWX TECHNOLOGIES COM 05605H100 27,817 1,098 4.11 2,744 -7.80 0.3386
2025-02-12 2024-12-31 13F BWX TECHNOLOGIES COM 05605H100 26,719 -2,020 -7.03 2,976 -4.71 0.3262
2024-11-12 2024-09-30 13F BWX TECHNOLOGIES COM 05605H100 28,739 -930 -3.13 3,124 10.82 0.3265
2024-08-09 2024-06-30 13F BWX TECHNOLOGIES COM 05605H100 29,669 5,522 22.87 2,819 13.77 0.3213
2024-05-10 2024-03-31 13F BWX TECHNOLOGIES COM 05605H100 24,147 -6,285 -20.65 2,478 6.08 0.2801
2024-02-13 2023-12-31 13F BWX TECHNOLOGIES COM 05605H100 30,432 2,847 10.32 2,335 12.91 0.2846
2023-11-13 2023-09-30 13F BWX TECHNOLOGIES COM 05605H100 27,585 -2,248 -7.54 2,068 -3.14 0.2971
2023-08-14 2023-06-30 13F BWX TECHNOLOGIES COM 05605H100 29,833 6,783 29.43 2,135 46.94 0.2849
2023-05-10 2023-03-31 13F BWX TECHNOLOGIES COM 05605H100 23,050 23,050 1,453 0.2035
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.