Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in BWXT held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 12.5M | $2.55B | +2.0% | 13.631% | 0.04% |
| 2 | VANGUARD PORTFOLIO MANAGEMENT LLC | 4.9M | $1.00B | — | 5.339% | 0.05% |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | 4.1M | $837.2M | — | 4.469% | 0.02% |
| 4 | STATE STREET CORP | 3.7M | $766.6M | +4.2% | 4.092% | 0.03% |
| 5 | Invesco Ltd. | 2.5M | $515.8M | -1.8% | 2.753% | 0.08% |
| 6 | FRANKLIN RESOURCES INC | 1.9M | $388.8M | -15.8% | 2.075% | 0.10% |
| 7 | GEODE CAPITAL MANAGEMENT, LLC | 1.8M | $366.9M | -3.5% | 1.958% | 0.02% |
| 8 | ALKEON CAPITAL MANAGEMENT LLC | 1.7M | $355.7M | +10.0% | 1.898% | 2.18% |
| 9 | BLAIR WILLIAM & CO/IL | 1.4M | $294.1M | -0.1% | 1.570% | 0.84% |
| 10 | FIRST TRUST ADVISORS LP | 1.4M | $284.5M | +12.2% | 1.518% | 0.20% |
| 11 | MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 1.3M | $263.4M | +45.6% | 1.406% | 0.36% |
| 12 | MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 1.3M | $263.2M | -6.5% | 1.404% | 0.09% |
| 13 | Bank of New York Mellon Corp | 1.3M | $262.6M | +8.4% | 1.401% | 0.05% |
| 14 | TORONTO DOMINION BANK | 1.2M | $244.0M | -0.1% | 1.302% | 0.35% |
| 15 | SNYDER CAPITAL MANAGEMENT L P | 1.1M | $225.4M | -17.0% | 1.203% | 4.37% |
| 16 | Artisan Partners Limited Partnership | 1.1M | $216.6M | -3.3% | 1.156% | 0.35% |
| 17 | BANK OF AMERICA CORP /DE/ | 1.0M | $205.6M | +5.5% | 1.098% | 0.02% |
| 18 | WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 982K | $200.8M | -11.4% | 1.072% | 0.66% |
| 19 | MORGAN STANLEY | 978K | $200.0M | -1.5% | 1.067% | 0.01% |
| 20 | Clearbridge Investments, LLC | 828K | $169.3M | -5.2% | 0.904% | 0.15% |
| 21 | FMR LLC | 820K | $167.8M | -5.8% | 0.896% | 0.01% |
| 22 | Mawer Investment Management Ltd. | 734K | $150.1M | -5.0% | 0.801% | 0.97% |
| 23 | Fiera Capital Corp | 729K | $149.1M | +0.9% | 0.796% | 0.51% |
| 24 | Select Equity Group, L.P. | 726K | $148.5M | +68.9% | 0.793% | 0.82% |
| 25 | NORTHERN TRUST CORP | 722K | $147.7M | +3.8% | 0.788% | 0.02% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in BWXT — a direct measure of their conviction.
Filings activity in BWXT during Q1 2026, grouped by how each filer changed its position.
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 802 | +8.4% | 90.06% | +11.09 pp | $15.96B | +14% |
| Q4 2025 | 740 | +8.5% | 78.97% | 2.79 pp | $13.99B | 3.4% |
| Q3 2025 | 682 | +5.9% | 81.76% | +17.39 pp | $14.49B | +27% |
| Q2 2025 | 644 | +9.2% | 64.37% | +23.85 pp | $11.41B | +59% |
| Q1 2025 | 590 | +2.3% | 40.52% | 5.95 pp | $7.18B | 13% |
| Q4 2024 | 577 | +7.6% | 46.47% | +1.36 pp | $8.24B | +3.0% |
| Q3 2024 | 536 | +11% | 45.11% | +4.55 pp | $8.00B | +11% |
| Q2 2024 | 481 | — | 40.56% | — | $7.19B | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying BWXT stock.
Based on Q1 2026 13F filings, institutional ownership of BWX Technologies, Inc. stands at 90.1%, held across 802 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of BWXT, with approximately 12,487,506 shares worth $2.55B as of Q1 2026.
No marquee "smart money" managers (Berkshire, Burry, ARK, Tiger Global, Pershing Square, Baupost, etc.) currently appear among the top 25 institutional holders of BWXT.
Our composite Smart Money Score for BWXT is 54 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
167 institutions opened new positions in BWXT during Q1 2026, while 105 fully exited. 540 added to existing positions and 94 trimmed.
BWXT institutional ownership rose by 11.09 percentage points quarter-over-quarter, with a net change of +62 holders.
The top 10 institutions account for 46.1% of all reported 13F value in BWXT, and the top 25 account for 65.0%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
BWX Technologies, Inc. (BWXT) Institutional Ownership