98 tracked 13F filers disclose a position in BOOM as of the latest SEC 13F filings, a combined $59.0M in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | $7.4M | 1.4M | ▼−1.5% Reduced · −22K sh | Q1 2026 | |
| 2 | GENDELL JEFFREY L | $5.2M | 1.0M | ▲+11% Added · +100K sh | Q1 2026 | |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | $4.1M | 788K | →First observed position No prior filed position | Q1 2026 | |
| 4 | AMERIPRISE FINANCIAL INC | $4.1M | 785K | ▼~0% Reduced · −257 sh | Q1 2026 | |
| 5 | COOKE & BIELER LP | $3.9M | 748K | ▼−62% Reduced · −1.2M sh | Q1 2026 | |
| 6 | DIMENSIONAL FUND ADVISORS LP | $3.4M | 652K | ▼−0.5% Reduced · −3K sh | Q1 2026 | |
| 7 | Cerity Partners LLC | $2.8M | 536K | ▲+0.3% Added · +2K sh | Q1 2026 | |
| 8 | VANGUARD PORTFOLIO MANAGEMENT LLC | $2.7M | 515K | →First observed position No prior filed position | Q1 2026 | |
| 9 | GEODE CAPITAL MANAGEMENT, LLC | $2.4M | 464K | ▲+1.3% Added · +6K sh | Q1 2026 | |
| 10 | STATE STREET CORP | $2.2M | 416K | ▲+0.7% Added · +3K sh | Q1 2026 | |
| 11 | FEDERATED HERMES, INC. | $1.8M | 346K | ▼−42% Reduced · −255K sh | Q1 2026 | |
| 12 | BRIDGEWAY CAPITAL MANAGEMENT, LLC | $1.6M | 300K | ▲+2.3% Added · +7K sh | Q1 2026 | |
| 13 | AMERICAN CENTURY COMPANIES INC | $1.3M | 247K | ▲+32% Added · +60K sh | Q1 2026 | |
| 14 | MORGAN STANLEY | $1.2M | 232K | ▲+63% Added · +89K sh | Q1 2026 | |
| 15 | PRUDENTIAL FINANCIAL INC | $948K | 182K | ▼−48% Reduced · −166K sh | Q1 2026 | |
| 16 | NORTHERN TRUST CORP | $827K | 159K | ▲+6.8% Added · +10K sh | Q1 2026 | |
| 17 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $769K | 148K | ▼−4.5% Reduced · −7K sh | Q1 2026 | |
| 18 | MARSHALL WACE, LLP | $738K | 142K | ▼−21% Reduced · −38K sh | Q1 2026 | |
| 19 | JACOBS LEVY EQUITY MANAGEMENT, INC | $703K | 135K | ▲+8.2% Added · +10K sh | Q1 2026 | |
| 20 | CITADEL ADVISORS LLC | $647K | 124K | ▼−21% Reduced · −34K sh | Q1 2026 | |
| 21 | Empowered Funds, LLC | $619K | 119K | ▼−13% Reduced · −18K sh | Q1 2026 | |
| 22 | D. E. Shaw & Co., Inc. | $604K | 116K | ▲+62% Added · +44K sh | Q1 2026 | |
| 23 | VANGUARD FIDUCIARY TRUST CO | $580K | 111K | →First observed position No prior filed position | Q1 2026 | |
| 24 | WINTON GROUP Ltd | $560K | 108K | ▲+128% Added · +60K sh | Q1 2026 | |
| 25 | STRS OHIO | $551K | 106K | ▲+21% Added · +18K sh | Q1 2026 |
Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
Last quarter, 11 funds opened a new position in BOOM and 18 added to an existing one, while 12 reduced and 0 exited entirely — based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 27 funds | $9.1B |
| AMAZON.COM INCAMZN | 27 funds | $8.1B |
| BROADCOM INCAVGO | 27 funds | $5.3B |
| META PLATFORMS INC-CLASS AMETA | 27 funds | $5.0B |
| MICRON TECHNOLOGY INCMU | 27 funds | $3.3B |
| ELI LILLY & COLLY | 27 funds | $2.3B |
| COSTCO WHOLESALE CORPCOST | 27 funds | $2.3B |
| MASTERCARD INC - AMA | 27 funds | $2.3B |
| ARISTA NETWORKS INCANET | 27 funds | $1.5B |
| LAM RESEARCH CORPLRCX | 27 funds | $1.5B |
| PALANTIR TECHNOLOGIES INC-APLTR | 27 funds | $1.5B |
| BANK OF AMERICA CORPBAC | 27 funds | $1.5B |
Ranked by how many of BOOM's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Dec 3, 2025 | Schladen James | President of Arcadia | Sell (S) | 18K | $106K |
| Dec 2, 2025 | Schladen James | President of Arcadia | Sell (S) | 782 | $5K |
| Aug 8, 2025 | OLEARY JAMES | Exec. Chair, President & CEO, Director | Buy (P) | 40K | $237K |
| Dec 6, 2023 | OLEARY JAMES | Director | Buy (P) | 5K | $82K |
| Aug 14, 2023 | Graff Richard P | Director | Sell (S) | 4K | $92K |
| Jun 16, 2023 | Graff Richard P | Director | Sell (S) | 2K | $32K |
| Sep 16, 2022 | Cohen Robert A | Director | Buy (P) | 10K | $188K |
| Jun 3, 2022 | LONGE KEVIN T | President and CEO, Director | Sell (S) | 4K | $129K |
| May 13, 2022 | LONGE KEVIN T | President and CEO, Director | Sell (S) | 6K | $127K |
| May 12, 2022 | LONGE KEVIN T | President and CEO, Director | Sell (S) | 4K | $86K |
| May 11, 2022 | LONGE KEVIN T | President and CEO, Director | Sell (S) | 22 | $484 |
| Mar 18, 2022 | Graff Richard P | Director | Sell (S) | 1K | $35K |
This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/BOOM/capital-change-brief"
Use Arkolith's capital_change_brief for BOOM. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for BOOM. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.