BWX 테크놀로지스, Inc.
MX ˙ BMV ˙ US05605H1005
SecurityMX:BWXT / BWX Technologies, Inc.
InstitutionMillennium Management Llc
ManagerIsrael Englander
Latest Disclosed Ownership34,149 shares
Latest Disclosed Value $ 6,983,129
Millennium Management Llc ownership in BWXT / BWX Technologies, Inc.

On May 15, 2026 - Millennium Management Llc filed a 13F-HR form disclosing ownership of 34,149 shares of BWX Technologies, Inc. (MX:BWXT) valued at $6,983,129 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 144,968 shares of BWX Technologies, Inc.. This represents a change in shares of -76.44% during the quarter.

Millennium Management Llc 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 25,300 of underlying shares valued at $5,173,597 USD and put options representing 27,100 of underlying shares valued at $5,541,679 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)
2026-05-15 2026-03-31 13F BWX TECHNOLOGIES COM 05605H100 34,149 -110,819 -76.44 6,983 -72.13 0.0029
2026-02-17 2025-12-31 13F BWX TECHNOLOGIES COM 05605H100 144,968 128,856 799.75 25,056 743.64 0.0105
2025-11-14 2025-09-30 13F BWX TECHNOLOGIES COM 05605H100 16,112 -12,376 -43.44 2,971 -27.61 0.0013
2025-08-14 2025-06-30 13F BWX TECHNOLOGIES COM 05605H100 28,488 -154,506 -84.43 4,104 -77.27 0.0020
2025-05-15 2025-03-31 13F BWX TECHNOLOGIES COM 05605H100 182,994 148,319 427.74 18,052 367.43 0.0096
2025-02-14 2024-12-31 13F BWX TECHNOLOGIES COM 05605H100 34,675 -539,360 -93.96 3,862 -93.81 0.0019
2024-11-14 2024-09-30 13F BWX TECHNOLOGIES COM 05605H100 574,035 266,598 86.72 62,398 113.64 0.0296
2024-08-14 2024-06-30 13F BWX TECHNOLOGIES COM 05605H100 307,437 28,997 10.41 29,207 2.22 0.0135
2024-05-15 2024-03-31 13F BWX TECHNOLOGIES COM 05605H100 278,440 174,923 168.98 28,574 259.77 0.0122
2024-02-14 2023-12-31 13F BWX TECHNOLOGIES COM 05605H100 103,517 103,517 7,943 0.0034
2023-11-14 2023-09-30 13F BWX TECHNOLOGIES COM 05605H100 0 -110,122 -100.00 0 -100.00
2023-08-14 2023-06-30 13F BWX TECHNOLOGIES COM 05605H100 110,122 78,809 251.68 7,881 299.24 0.0039
2023-05-15 2023-03-31 13F BWX TECHNOLOGIES COM 05605H100 31,313 -3,566 -10.22 1,974 -2.57 0.0011
2023-02-14 2022-12-31 13F BWX TECHNOLOGIES COM 05605H100 34,879 16,784 92.75 2,026 122.39 0.0011
2022-11-14 2022-09-30 13F BWX TECHNOLOGIES COM 05605H100 18,095 -446,299 -96.10 911 -96.44 0.0005
2022-08-15 2022-06-30 13F BWX TECHNOLOGIES COM 05605H100 464,394 -228,007 -32.93 25,583 -31.40 0.0159
2022-05-16 2022-03-31 13F BWX TECHNOLOGIES COM 05605H100 692,401 -952,105 -57.90 37,293 -52.64 0.0198
2022-02-14 2021-12-31 13F BWX TECHNOLOGIES COM 05605H100 1,644,506 1,496,896 1,014.09 78,739 890.43 0.0400
2021-11-15 2021-09-30 13F BWX TECHNOLOGIES COM 05605H100 147,610 -175,727 -54.35 7,950 -57.69 0.0048
2021-08-16 2021-06-30 13F BWX TECHNOLOGIES COM 05605H100 323,337 260,100 411.31 18,792 350.65 0.0115
2021-05-17 2021-03-31 13F BWX TECHNOLOGIES COM 05605H100 63,237 63,237 4,170 0.0030
2021-02-16 2020-12-31 13F BWX TECHNOLOGIES COM 05605H100 0 -52,344 -100.00 0 -100.00
2020-11-16 2020-09-30 13F BWX TECHNOLOGIES COM 05605H100 52,344 7,245 16.06 2,947 15.39 0.0036
2020-08-14 2020-06-30 13F BWX TECHNOLOGIES COM 05605H100 45,099 -12,504 -21.71 2,554 -8.98 0.0035
2020-05-14 2020-03-31 13F BWX TECHNOLOGIES COM 05605H100 57,603 50,346 693.76 2,806 522.17 0.0063
2020-02-14 2019-12-31 13F BWX TECHNOLOGIES COM 05605H100 7,257 -4,303 -37.22 451 -31.77 0.0006
2019-11-14 2019-09-30 13F BWX TECHNOLOGIES COM 05605H100 11,560 -37,912 -76.63 661 -74.35 0.0010
2019-08-15 2019-06-30 13F/A-1 BWX TECHNOLOGIES COM 05605H100 49,472 -82,471 -62.51 2,577 -60.61 0.0039
2019-05-14 2019-03-31 13F BWX TECHNOLOGIES COM 05605H100 131,943 39,689 43.02 6,542 85.48 0.0098
2019-02-15 2018-12-31 13F/A-1 BWX TECHNOLOGIES COM 05605H100 92,254 92,254 3,527 0.0055
2019-02-14 2018-12-31 13F BWX TECHNOLOGIES COM 05605H100 92,254 3,527
2018-11-14 2018-09-30 13F BWX TECHNOLOGIES COM 05605H100 0 -224,109 -100.00 0 -100.00
2018-08-14 2018-06-30 13F BWX TECHNOLOGIES COM 05605H100 224,109 -443,209 -66.42 13,966 -67.06 0.0182
2018-05-15 2018-03-31 13F BWX TECHNOLOGIES COM 05605H100 667,318 368,644 123.43 42,395 134.65 0.0566
2018-02-14 2017-12-31 13F BWX TECHNOLOGIES COM 05605H100 298,674 240,375 412.31 18,067 453.18 0.0249
2017-11-14 2017-09-30 13F BWX TECHNOLOGIES COM 05605H100 58,299 -63,627 -52.18 3,266 -45.05 0.0050
2017-08-14 2017-06-30 13F BWX TECHNOLOGIES COM 05605H100 121,926 -162,700 -57.16 5,944 -56.13 0.0106
2017-05-15 2017-03-31 13F BWX TECHNOLOGIES COM 05605H100 284,626 -574,947 -66.89 13,548 -60.30 0.0248
2017-02-14 2016-12-31 13F BWX TECHNOLOGIES COM 05605H100 859,573 489,375 132.19 34,125 140.25 0.0715
2016-11-14 2016-09-30 13F BWX TECHNOLOGIES COM 05605H100 370,198 -2,531 -0.68 14,204 6.53 0.0238
2016-08-15 2016-06-30 13F BWX TECHNOLOGIES COM 05605H100 372,729 52,896 16.54 13,333 24.21 0.0305
2016-05-16 2016-03-31 13F BWX TECHNOLOGIES COM 05605H100 319,833 280,257 708.15 10,734 753.94 0.0268
2016-02-16 2015-12-31 13F BWX TECHNOLOGIES COM 05605H100 39,576 -255,203 -86.57 1,257 -83.82 0.0026
2015-11-16 2015-09-30 13F BWX TECHNOLOGIES COM 05605H100 294,779 -122,336 -29.33 7,770 -43.21 0.0150
2015-08-14 2015-06-30 13F BWX TECHNOLOGIES COM 05605H100 417,115 -379,051 -47.61 13,681 -46.45 0.0259
2015-05-15 2015-03-31 13F BABCOCK & WILCOX CO COM 05615F102 796,166 661,330 490.47 25,549 525.28 0.0475
2015-02-17 2014-12-31 13F BABCOCK & WILCOX CO COM 05615F102 134,836 -13,353 -9.01 4,086 -0.41 0.0087
2014-11-14 2014-09-30 13F BABCOCK & WILCOX CO COM 05615F102 148,189 -705,662 -82.64 4,103 -85.20 0.0104
2014-08-14 2014-06-30 13F BABCOCK & WILCOX CO COM 05615F102 853,851 504,706 144.55 27,716 139.10 0.0768
2014-05-15 2014-03-31 13F BABCOCK & WILCOX CO COM 05615F102 349,145 182,217 109.16 11,592 103.12 0.0336
2014-02-14 2013-12-31 13F BABCOCK & WILCOX CO COM 05615F102 166,928 113,613 213.10 5,707 217.41 0.0180
2013-11-14 2013-09-30 13F BABCOCK & WILCOX CO COM 05615F102 53,315 -410,520 -88.51 1,798 -87.09 0.0058
2013-08-14 2013-06-30 13F BABCOCK & WILCOX CO COM 05615F102 463,835 463,835 13,929 0.0427
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
(%)
2026-05-15 2026-03-31 13F BWX TECHNOLOGIES COM Call 25,300 130.00 5,174 172.12 n/a n/a n/a
2026-02-17 2025-12-31 13F BWX TECHNOLOGIES COM Call 11,000 1,901 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
(%)
2026-05-15 2026-03-31 13F BWX TECHNOLOGIES COM Put 27,100 5,542 n/a n/a n/a
2026-02-17 2025-12-31 13F BWX TECHNOLOGIES COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2025-11-14 2025-09-30 13F BWX TECHNOLOGIES COM Put 2,900 -9.38 535 16.09 n/a n/a n/a
2025-08-14 2025-06-30 13F BWX TECHNOLOGIES COM Put 3,200 -60.98 461 -43.07 n/a n/a n/a
2025-05-15 2025-03-31 13F BWX TECHNOLOGIES COM Put 8,200 3.80 809 -8.08 n/a n/a n/a
2025-02-14 2024-12-31 13F BWX TECHNOLOGIES COM Put 7,900 880 n/a n/a n/a
2024-05-15 2024-03-31 13F BWX TECHNOLOGIES COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2024-02-14 2023-12-31 13F BWX TECHNOLOGIES COM Put 8,800 675 n/a n/a n/a
2019-11-14 2019-09-30 13F CELANESE CORP DEL COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2019-08-14 2019-06-30 13F CELANESE CORP DEL COM Put 35,000 3,773 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.