BWX Technologies, Inc.
MX ˙ BMV ˙ US05605H1005
SecurityMX:BWXT / BWX Technologies, Inc.
InstitutionCapital Fund Management S.a.
Latest Disclosed Ownership16,564 shares
Latest Disclosed Value $ 3,387,172
Capital Fund Management S.a. ownership in BWXT / BWX Technologies, Inc.

On May 14, 2026 - Capital Fund Management S.a. filed a 13F-HR form disclosing ownership of 16,564 shares of BWX Technologies, Inc. (MX:BWXT) valued at $3,387,172 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 24,094 shares of BWX Technologies, Inc.. This represents a change in shares of -31.25% during the quarter.

Capital Fund Management S.a. has a history of taking positions in derivatives of the underlying security (BWXT) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD and put options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

MX:BWXT / BWX Technologies, Inc. Historical Put/Call Ratio
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)
2026-05-14 2026-03-31 13F BWX TECHNOLOGIES INC COM BWX TECHNOLOGIES INC COM 05605H100 16,564 -7,530 -31.25 3,387 -18.66 0.0153
2026-02-17 2025-12-31 13F BWX TECHNOLOGIES INC COM BWX TECHNOLOGIES INC COM 05605H100 24,094 24,094 4,164 0.0116
2025-11-13 2025-09-30 13F BWX TECHNOLOGIES COM 05605H100 0 -40,778 -100.00 0 -100.00
2025-08-13 2025-06-30 13F BWX TECHNOLOGIES COM 05605H100 40,778 40,778 5,874 0.0162
2022-11-14 2022-09-30 13F BWX TECHNOLOGIES COM 05605H100 0 -42,356 -100.00 0 -100.00
2022-08-12 2022-06-30 13F BWX TECHNOLOGIES COM 05605H100 42,356 18,351 76.45 2,333 80.57 0.0212
2022-05-12 2022-03-31 13F BWX TECHNOLOGIES COM 05605H100 24,005 24,005 1,293 0.0106
2021-08-12 2021-06-30 13F BWX TECHNOLOGIES COM 05605H100 0 -15,835 -100.00 0 -100.00
2021-05-14 2021-03-31 13F BWX TECHNOLOGIES COM 05605H100 15,835 -72,068 -81.99 1,044 -80.29 0.0115
2021-02-12 2020-12-31 13F BWX TECHNOLOGIES COM 05605H100 87,903 62,560 246.85 5,299 271.27 0.0500
2020-11-13 2020-09-30 13F BWX TECHNOLOGIES COM 05605H100 25,343 14,712 138.39 1,427 137.04 0.0176
2020-08-13 2020-06-30 13F BWX TECHNOLOGIES COM 05605H100 10,631 10,631 602 0.0096
2019-08-12 2019-06-30 13F BWX Technologies COM 05605H100 0 -56,137 -100.00 0 -100.00
2019-05-13 2019-03-31 13F BWX Technologies COM 05605H100 56,137 0 0.00 2,146 0.00 0.0190
2019-02-13 2018-12-31 13F BWX Technologies COM 05605H100 56,137 -122,855 -68.64 2,146 -80.83 0.0190
2018-11-14 2018-09-30 13F BWX Technologies COM 05605H100 178,992 -60,837 -25.37 11,194 -25.10 0.0610
2018-08-14 2018-06-30 13F BWX Technologies COM 05605H100 239,829 33,470 16.22 14,946 14.00 0.0780
2018-05-15 2018-03-31 13F BWX Technologies COM 05605H100 206,359 -64,521 -23.82 13,110 -19.99 0.0787
2018-02-09 2017-12-31 13F BWX Technologies COM 05605H100 270,880 25,401 10.35 16,386 19.15 0.0903
2017-11-13 2017-09-30 13F BWX Technologies COM 05605H100 245,479 -75,448 -23.51 13,752 -12.10 0.0988
2017-08-10 2017-06-30 13F BWX Technologies COM 05605H100 320,927 -11,074 -3.34 15,645 -1.00 0.1261
2017-05-03 2017-03-31 13F BWX Technologies COM 05605H100 332,001 -21,186 -6.00 15,803 12.70 0.1318
2017-02-08 2016-12-31 13F BWX Technologies COM 05605H100 353,187 62,942 21.69 14,022 25.90 0.1208
2016-10-31 2016-09-30 13F BWX Technologies COM 05605H100 290,245 30,180 11.60 11,137 19.71 0.1022
2016-07-27 2016-06-30 13F BWX Technologies COM 05605H100 260,065 2,022 0.78 9,303 7.42 0.0872
2016-05-02 2016-03-31 13F BWX Technologies COM 05605H100 258,043 91,870 55.29 8,660 64.05 0.0841
2016-01-28 2015-12-31 13F BWX Technologies COM 05605H100 166,173 75,060 82.38 5,279 119.78 0.0543
2015-10-27 2015-09-30 13F BWX Technologies COM 05605H100 91,113 -135,694 -59.83 2,402 -67.71 0.0269
2015-07-28 2015-06-30 13F Babcock & Wilcox COM 05615F102 226,807 226,807 7,439 0.0944
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-14 2026-03-31 13F BWX TECHNOLOGIES INC COM BWX TECHNOLOGIES INC COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2026-02-17 2025-12-31 13F BWX TECHNOLOGIES INC COM BWX TECHNOLOGIES INC COM Call 20,200 -5.61 3,491 -11.51 n/a n/a n/a
2025-11-13 2025-09-30 13F BWX TECHNOLOGIES COM Call 21,400 30.49 3,946 67.02 n/a n/a n/a
2025-08-13 2025-06-30 13F BWX TECHNOLOGIES COM Call 16,400 -79.42 2,363 -69.96 n/a n/a n/a
2025-05-14 2025-03-31 13F BWX TECHNOLOGIES COM Call 79,700 41.56 7,862 25.37 n/a n/a n/a
2025-02-13 2024-12-31 13F BWX TECHNOLOGIES COM Call 56,300 81.03 6,271 85.53 n/a n/a n/a
2024-11-13 2024-09-30 13F BWX TECHNOLOGIES COM Call 31,100 76.70 3,381 102.15 n/a n/a n/a
2024-08-13 2024-06-30 13F BWX TECHNOLOGIES COM Call 17,600 1,672 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-14 2026-03-31 13F BWX TECHNOLOGIES INC COM BWX TECHNOLOGIES INC COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2026-02-17 2025-12-31 13F BWX TECHNOLOGIES INC COM BWX TECHNOLOGIES INC COM Put 11,800 -32.18 2,040 -36.44 n/a n/a n/a
2025-11-13 2025-09-30 13F BWX TECHNOLOGIES COM Put 17,400 3,208 n/a n/a n/a
2025-08-13 2025-06-30 13F BWX TECHNOLOGIES COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2025-05-14 2025-03-31 13F BWX TECHNOLOGIES COM Put 60,000 331.65 5,919 282.36 n/a n/a n/a
2025-02-13 2024-12-31 13F BWX TECHNOLOGIES COM Put 13,900 -6.71 1,548 -4.39 n/a n/a n/a
2024-11-13 2024-09-30 13F BWX TECHNOLOGIES COM Put 14,900 6.43 1,620 21.73 n/a n/a n/a
2024-08-13 2024-06-30 13F BWX TECHNOLOGIES COM Put 14,000 1,330 n/a n/a n/a
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.