The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
This stock page is the Follow view. The Build view lets your agent query QSI owners, fund changes, insider filings, and source links through REST or MCP.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/QSI"
Use Arkolith to show who owns QSI, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | VANGUARD GROUP INC | $10.6M | 9.6M | ▲+10% Added · +893K sh | Q4 2025 | |
| 2 | BlackRock, Inc. | $10.4M | 13.4M | ▲+2.8% Added · +361K sh | Q1 2026 | |
| 3 | ARK Investment Management LLC | $5.3M | 6.9M | ▼−2.0% Reduced · −143K sh | Q1 2026 | |
| 4 | GEODE CAPITAL MANAGEMENT, LLC | $3.0M | 3.8M | ▼−6.8% Reduced · −279K sh | Q1 2026 | |
| 5 | STATE STREET CORP | $2.9M | 3.8M | ▲+5.8% Added · +208K sh | Q1 2026 | |
| 6 | VANGUARD PORTFOLIO MANAGEMENT LLC | $1.2M | 1.5M | ▲New +1.5M sh | Q1 2026 | |
| 7 | VANGUARD FIDUCIARY TRUST CO | $865K | 1.1M | ▲New +1.1M sh | Q1 2026 | |
| 8 | IEQ CAPITAL, LLC | $277K | 358K | ▲New +358K sh | Q1 2026 | |
| 9 | GROUP ONE TRADING LLC | $220K | 284K | ▲+16% Added · +38K sh | Q1 2026 | |
| 10 | BRIDGEWAY CAPITAL MANAGEMENT, LLC | $202K | 261K | —Held | Q1 2026 | |
| 11 | AlphaCore Capital LLC | $99K | 128K | ▲+160% Added · +79K sh | Q1 2026 | |
| 12 | CWM, LLC | $98K | 127K | ▲18× Added · +120K sh | Q1 2026 | |
| 13 | LOS ANGELES CAPITAL MANAGEMENT LLC | $90K | 116K | ▲+25% Added · +23K sh | Q1 2026 | |
| 14 | MetLife Investment Management, LLC | $79K | 102K | ▲+197% Added · +67K sh | Q1 2026 | |
| 15 | WEALTH ENHANCEMENT ADVISORY SERVICES, LLC | $58K | 90K | ▲New +90K sh | Q1 2026 | |
| 16 | DEERFIELD MANAGEMENT COMPANY, L.P. | $36K | 333K | —Held | Q1 2026 | |
| 17 | INTECH INVESTMENT MANAGEMENT LLC | $36K | 46K | ▼−29% Reduced · −19K sh | Q1 2026 | |
| 18 | Police & Firemen's Retirement System of New Jersey | $36K | 46K | —Held | Q1 2026 | |
| 19 | Sanctuary Advisors, LLC | $33K | 43K | ▲+1.0% Added · +411 sh | Q1 2026 | |
| 20 | STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM | $32K | 41K | —Held | Q1 2026 | |
| 21 | Merit Financial Group, LLC | $28K | 36K | ▲New +36K sh | Q1 2026 | |
| 22 | SBI Securities Co., Ltd. | $25K | 32K | ▼−5.9% Reduced · −2K sh | Q1 2026 | |
| 23 | FMR LLC | $25K | 32K | ▼−67% Reduced · −66K sh | Q1 2026 | |
| 24 | Pallas Capital Advisors LLC | $20K | 26K | ▲New +26K sh | Q1 2026 | |
| 25 | Kovack Advisors, Inc. | $20K | 30K | ▲+79% Added · +13K 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.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Mar 23, 2026 | LaPointe Christian | GC & Corp. Secretary | Sell (S) | 6K | $5K |
| Mar 23, 2026 | Hawkins Jeffrey Alan | President & CEO, Director | Sell (S) | 12K | $10K |
| Mar 23, 2026 | Vieceli John S. | Chief Product Officer | Sell (S) | 11K | $9K |
| Mar 23, 2026 | Keyes Jeffry R. | Chief Financial Officer | Sell (S) | 4K | $4K |
| Mar 20, 2026 | LaPointe Christian | GC & Corp. Secretary | Sell (S) | 6K | $5K |
| Mar 20, 2026 | Keyes Jeffry R. | Chief Financial Officer | Sell (S) | 4K | $4K |
| Mar 20, 2026 | Hawkins Jeffrey Alan | President & CEO, Director | Sell (S) | 12K | $10K |
| Mar 20, 2026 | Vieceli John S. | Chief Product Officer | Sell (S) | 11K | $9K |
| Mar 12, 2026 | Vieceli John S. | Chief Product Officer | Grant (A) | 469K | $0 |
| Mar 12, 2026 | Keyes Jeffry R. | Chief Financial Officer | Grant (A) | 653K | $0 |
| Mar 12, 2026 | Keyes Jeffry R. | Chief Financial Officer | Grant (A) | 781K | $0 |
| Mar 12, 2026 | Hawkins Jeffrey Alan | President & CEO, Director | Grant (A) | 1.3M | $0 |
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 47 funds | $15.3B |
| BROADCOM INCAVGO | 47 funds | $8.2B |
| TESLA INCTSLA | 47 funds | $6.1B |
| ELI LILLY & COLLY | 47 funds | $4.1B |
| PALANTIR TECHNOLOGIES INC-APLTR | 47 funds | $2.6B |
| AMAZON.COM INCAMZN | 46 funds | $12.2B |
| ALPHABET INC-CL CGOOG | 46 funds | $7.7B |
| META PLATFORMS INC-CLASS AMETA | 46 funds | $7.6B |
| JPMORGAN CHASE & COJPM | 46 funds | $5.7B |
| COSTCO WHOLESALE CORPCOST | 46 funds | $3.4B |
| VISA INC-CLASS A SHARESV | 46 funds | $3.3B |
| CHEVRON CORPCVX | 46 funds | $2.6B |
Ranked by how many of QSI's institutional holders also hold each name, a cross-fund conviction signal. Via the MCP server (ticker.co_held).
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for QSI. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes. Every panel above is one call to the Arkolith API & MCP server.