123 tracked 13F filers disclose a position in QTRX as of the latest SEC 13F filings, a combined $129.0M 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 | AMERIPRISE FINANCIAL INC | $12.5M | 3.5M | ▼−29% Reduced · −1.5M sh | Q1 2026 | |
| 2 | Blue Water Life Science Advisors, LP | $15.0M | 3.5M | ▲+62% Added · +1.3M sh | Q2 2026 | |
| 3 | BlackRock, Inc. | $11.5M | 3.3M | ▼−2.9% Reduced · −98K sh | Q1 2026 | |
| 4 | Portolan Capital Management, LLC | $10.4M | 2.9M | ▼−35% Reduced · −1.6M sh | Q1 2026 | |
| 5 | First Eagle Investment Management, LLC | $11.9M | 2.8M | —Held | Q3 2026 | |
| 6 | Invenomic Capital Management LP | $6.8M | 1.9M | ▲+28% Added · +427K sh | Q1 2026 | |
| 7 | VANGUARD CAPITAL MANAGEMENT LLC | $6.3M | 1.8M | →First observed position No prior filed position | Q1 2026 | |
| 8 | Lionhunter Capital Management, LLC | $6.5M | 1.5M | ▲New +1.5M sh | Q3 2026 | |
| 9 | GEODE CAPITAL MANAGEMENT, LLC | $4.9M | 1.1M | ▲+14% Added · +137K sh | Q2 2026 | |
| 10 | STATE STREET CORP | $4.0M | 932K | ▲+3.8% Added · +34K sh | Q2 2026 | |
| 11 | Empire Financial Management Company, LLC | $2.6M | 736K | ▲+19% Added · +118K sh | Q1 2026 | |
| 12 | MILLENNIUM MANAGEMENT LLC | $2.4M | 689K | ▲+71% Added · +287K sh | Q1 2026 | |
| 13 | ENVESTNET ASSET MANAGEMENT INC | $2.4M | 683K | ▲+171% Added · +431K sh | Q1 2026 | |
| 14 | Russell Investments Group, Ltd. | $2.3M | 642K | ▲+151% Added · +386K sh | Q1 2026 | |
| 15 | MARSHALL WACE, LLP | $2.2M | 622K | ▲+301% Added · +467K sh | Q1 2026 | |
| 16 | MORGAN STANLEY | $2.1M | 608K | ▼−26% Reduced · −215K sh | Q1 2026 | |
| 17 | VANGUARD PORTFOLIO MANAGEMENT LLC | $2.0M | 577K | →First observed position No prior filed position | Q1 2026 | |
| 18 | Topline Capital Management, LLC | $2.0M | 563K | ▲New +563K sh | Q1 2026 | |
| 19 | DIMENSIONAL FUND ADVISORS LP | $1.6M | 443K | ▲+14% Added · +54K sh | Q1 2026 | |
| 20 | UBS Group AG | $1.3M | 377K | ▲+21% Added · +65K sh | Q1 2026 | |
| 21 | NORTHERN TRUST CORP | $1.2M | 350K | ▲+1.2% Added · +4K sh | Q1 2026 | |
| 22 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $1.2M | 346K | ▼−4.6% Reduced · −17K sh | Q1 2026 | |
| 23 | Parkman Healthcare Partners LLC | $1.2M | 341K | ▲+3.8% Added · +12K sh | Q1 2026 | |
| 24 | TUDOR INVESTMENT CORP ET AL | $1.1M | 316K | ▲+86% Added · +146K sh | Q1 2026 | |
| 25 | VANGUARD FIDUCIARY TRUST CO | $952K | 271K | →First observed position No prior filed position | 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, 6 funds opened a new position in QTRX and 22 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 | 52 funds | $120.9B |
| NVIDIA CORPNVDA | 50 funds | $182.8B |
| ALPHABET INC-CL AGOOGL | 50 funds | $64.2B |
| ALPHABET INC-CL CGOOG | 50 funds | $62.0B |
| META PLATFORMS INC-CLASS AMETA | 50 funds | $53.5B |
| AMAZON.COM INCAMZN | 49 funds | $84.3B |
| ELI LILLY & COLLY | 49 funds | $35.0B |
| BROADCOM INCAVGO | 48 funds | $70.7B |
| VISA INC-CLASS A SHARESV | 48 funds | $28.3B |
| JPMORGAN CHASE & COJPM | 48 funds | $26.0B |
| BERKSHIRE HATHAWAY INC-CL BBRK/B | 48 funds | $18.7B |
| ADVANCED MICRO DEVICESAMD | 48 funds | $15.6B |
Ranked by how many of QTRX's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Aug 13, 2026 | DONNELLY WILLIAM P | Director | Buy (P) | 72K | $212K |
| Aug 12, 2026 | DONNELLY WILLIAM P | Director | Buy (P) | 27K | $75K |
| May 12, 2026 | Meadows Benjamin | Chief Commercial Officer | Buy (P) | 4K | $10K |
| Sep 12, 2025 | Sriram Vandana | Chief Financial Officer | Buy (P) | 4K | $20K |
| Jun 13, 2025 | WALT DAVID R | Director | Buy (P) | 124K | $761K |
| Jun 12, 2025 | WALT DAVID R | Director | Buy (P) | 36K | $224K |
| Jun 9, 2025 | WALT DAVID R | Director | Buy (P) | 78K | $417K |
| Jun 9, 2025 | Toloue Masoud | President & CEO, Director | Buy (P) | 46K | $249K |
| Jun 6, 2025 | DONNELLY WILLIAM P | Director | Buy (P) | 93K | $507K |
| Jun 6, 2025 | WALT DAVID R | Director | Buy (P) | 132K | $716K |
| Aug 20, 2024 | WALT DAVID R | Director | Buy (P) | 47K | $625K |
| Aug 13, 2024 | Toloue Masoud | President & CEO, Director | Buy (P) | 19K | $207K |
Connected entities for QTRX
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/QTRX/capital-change-brief"
Use Arkolith's capital_change_brief for QTRX. 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 QTRX. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.