Who holds ticker verified against the SEC company list on 2026-09-10 — a reviewed name-and-class mapping row, never an inferred symbol. how tickers are mapped ↗

BWX TECHNOLOGIES INC · common stock (filed as COM) · Q1 2026 · 5 members disclosed BWXT ↗
13F filers reporting this class for the quarter ended 2026-03-31; 1–500 of 677 holders are listed, largest first
677
sum of the reported values across every holder; undisclosed values are left out, never counted as zero
$15.1B
holders whose share count rose or who opened the position (new + add), by shares
373
holders absent this quarter after holding last quarter — inferred from absence, not a sale record
70
FILING WINDOW OPEN
Q3 2026 filings are due by 2026-11-16 — figures for that quarter will change; missing filers are not zeros.

Holders — quarter ended 2026-03-31

by reported value · Δ shares vs 2025-12-31Holders rank by reported value. The change kind — new, add, trim or exit — is read from the share count against the prior quarter, never from the reported value.
13F holders of BWXT ranked by reported value, 1–25 of 677 holders
#FilerReported valueSharesΔ sharesChange
1BlackRock, Inc.$2.6B12,487,506+247,420ADD
2VANGUARD PORTFOLIO MANAGEMENT LLC$1.0B4,891,237—NO PRIOR
3VANGUARD CAPITAL MANAGEMENT LLC$837M4,094,093—NO PRIOR
4STATE STREET CORP$767M3,748,950+150,765ADD
5Invesco Ltd.$516M2,522,532−45,585TRIM
6FRANKLIN RESOURCES INC$389M1,901,316−356,966TRIM
7GEODE CAPITAL MANAGEMENT, LLC$367M1,793,566−64,150TRIM
8ALKEON CAPITAL MANAGEMENT LLC$356M1,739,348+158,500ADD
9BLAIR WILLIAM & CO/IL$294M1,438,125−1,541TRIM
10FIRST TRUST ADVISORS LP$284M1,391,079+151,580ADD
11MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.$263M1,288,028+403,598ADD
12MASSACHUSETTS FINANCIAL SERVICES CO /MA/$263M1,286,257−89,483TRIM
13Bank of New York Mellon Corp$263M1,283,997+99,053ADD
14SNYDER CAPITAL MANAGEMENT L P$225M1,102,116−225,901TRIM
15Artisan Partners Limited Partnership$217M1,059,209−35,705TRIM
16BANK OF AMERICA CORP /DE/$206M1,005,621+52,413ADD
17WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC$201M981,782−125,818TRIM
18MORGAN STANLEY$200M977,834−14,553TRIM
19Clearbridge Investments, LLC$169M827,836−45,755TRIM
20FMR LLC$168M820,494−50,466TRIM
21Mawer Investment Management Ltd.$150M734,162−38,531TRIM
22Fiera Capital Corp$149M729,269+6,113ADD
23Select Equity Group, L.P.$149M726,424+296,311ADD
24NORTHERN TRUST CORP$148M722,135+26,283ADD
25DIMENSIONAL FUND ADVISORS LP$142M696,488−88,932TRIM
Show the top 500 of 677 holders
Truncated by Public Filings. Top 500 of 677 holders shown; the rest are on EDGAR. Method ↗
Newest filing in this build: 2026-07-31. Per-row filing dates are on each receipt.

Congress ↔ notable managers · BWXT

Congress · last 90 days

Buyers
1 April McClain Delaney D–MD-6 $18K–$95K
Sellers
1 April McClain Delaney D–MD-6 $100K–$250K

filed 2026-07-31 → 2026-10-29 · statutory ranges

Use of congressional disclosure reports for commercial purposes, credit decisions or solicitation is restricted by 5 U.S.C. §13107(c).

Notable managers · quarter ended 2026-03-31

Trimming
1 Caxton Associates $599K held

by shares · $ = value heldNEW + ADD vs TRIM + EXIT, by share count. $ = reported value now, not the change. · BWX TECHNOLOGIES INC

Merged timeline of congressional filings and notable-manager moves on BWXT
DateWhoChangeSize
2026-09-09April McClain Delaney CongressSELL$100K–$250K
2026-09-09April McClain Delaney CongressBUY$1K–$15K
2026-08-03April McClain Delaney CongressBUY$1K–$15K
2026-08-03April McClain Delaney CongressBUY$1K–$15K
2026-08-03April McClain Delaney CongressBUY$15K–$50K
2026-05-15Gotham Asset Management 13FADD+9,198 sh
2026-05-15Moore Capital Management 13FADD+11,053 sh
2026-05-15Bridgewater Associates 13FADD+8,448 sh
2026-05-14Caxton Associates 13FTRIM−976 sh

9 newest, by filing date · 13F rows are quarter-end snapshots, not trades

A 13F is a quarterly, long-only snapshot filed up to 45 days late — not current holdings. what a 13F covers ↗

13F reports cover LONG positions in Section 13(f) securities (US exchange-traded equities plus reportable options, warrants, certain convertibles) held by managers with at least $100M in such securities — so managers below that threshold are absent entirely. No short positions, no cash, no non-13(f) assets — not a full portfolio, and not a census of institutional ownership.

Positions are quarter-end snapshots filed up to 45 days late — not current holdings: a position may have changed or closed since the quarter ended.

Values are the manager's stated market value at quarter-end in era-dependent units (whole dollars for form versions effective 2023-01-03 onward, thousands before), normalized here to whole dollars; each record notes its original unit.

Affiliated managers may report the same position, so one position can appear under more than one filer.

Positions under confidential treatment may be omitted until a later amendment discloses them.

These are disclosures, not investment advice.