271 tracked 13F filers disclose a position in ADPT as of the latest SEC 13F filings, a combined $2.0B 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 | VIKING GLOBAL INVESTORS LP | $416.3M | 30.0M | —Held | Q1 2026 | |
| 2 | BlackRock, Inc. | $184.6M | 13.3M | ▼−0.2% Reduced · −31K sh | Q1 2026 | |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | $84.6M | 6.1M | →First observed position No prior filed position | Q1 2026 | |
| 4 | VANGUARD PORTFOLIO MANAGEMENT LLC | $62.3M | 4.5M | →First observed position No prior filed position | Q1 2026 | |
| 5 | WESTFIELD CAPITAL MANAGEMENT CO LP | $91.5M | 4.3M | ▼−22% Reduced · −1.2M sh | Q2 2026 | |
| 6 | GEODE CAPITAL MANAGEMENT, LLC | $78.1M | 3.6M | ▲+0.1% Added · +6K sh | Q2 2026 | |
| 7 | STATE STREET CORP | $74.2M | 3.5M | ▲+7.2% Added · +231K sh | Q2 2026 | |
| 8 | GOLDMAN SACHS GROUP INC | $45.0M | 3.2M | ▲+12% Added · +340K sh | Q1 2026 | |
| 9 | AMERIPRISE FINANCIAL INC | $41.9M | 3.0M | ▲+16% Added · +426K sh | Q1 2026 | |
| 10 | BNP Paribas Asset Management Holding S.A. | $37.3M | 2.7M | ▲New +2.7M sh | Q1 2026 | |
| 11 | ARK Investment Management LLC | $29.1M | 2.1M | ▼−2.1% Reduced · −46K sh | Q1 2026 | |
| 12 | FRED ALGER MANAGEMENT, LLC | $28.6M | 2.1M | ▼−8.1% Reduced · −182K sh | Q1 2026 | |
| 13 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | $27.7M | 2.0M | ▼−18% Reduced · −427K sh | Q1 2026 | |
| 14 | D. E. Shaw & Co., Inc. | $27.3M | 2.0M | ▲+3.3% Added · +63K sh | Q1 2026 | |
| 15 | Aristotle Atlantic Partners, LLC | $23.8M | 1.7M | ▼−7.0% Reduced · −128K sh | Q1 2026 | |
| 16 | PRINCIPAL FINANCIAL GROUP INC | $23.7M | 1.7M | ▲+9.8% Added · +152K sh | Q1 2026 | |
| 17 | Sumitomo Mitsui Trust Group, Inc. | $22.1M | 1.6M | ▼−18% Reduced · −353K sh | Q1 2026 | |
| 18 | Amova Asset Management Americas, Inc. | $22.1M | 1.6M | ▼−18% Reduced · −353K sh | Q1 2026 | |
| 19 | PRICE T ROWE ASSOCIATES INC /MD/ | $21.7M | 1.6M | ▼−64% Reduced · −2.8M sh | Q1 2026 | |
| 20 | NORTHERN TRUST CORP | $19.3M | 1.4M | ▲+19% Added · +220K sh | Q1 2026 | |
| 21 | Divisadero Street Capital Management, LP | $18.3M | 1.3M | ▲+265% Added · +957K sh | Q1 2026 | |
| 22 | Nuveen, LLC | $18.1M | 1.3M | ▲+66% Added · +518K sh | Q1 2026 | |
| 23 | BANK OF AMERICA CORP /DE/ | $17.0M | 1.2M | ▲+52% Added · +422K sh | Q1 2026 | |
| 24 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $15.9M | 1.1M | ▼−2.4% Reduced · −28K sh | Q1 2026 | |
| 25 | MILLENNIUM MANAGEMENT LLC | $15.0M | 1.1M | ▲59× Added · +1.1M 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, 8 funds opened a new position in ADPT and 32 added to an existing one, while 21 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 |
|---|---|---|
| AMAZON.COM INCAMZN | 158 funds | $184.4B |
| MICROSOFT CORPMSFT | 156 funds | $245.2B |
| META PLATFORMS INC-CLASS AMETA | 155 funds | $99.1B |
| ELI LILLY & COLLY | 154 funds | $71.3B |
| APPLE INCAAPL | 152 funds | $266.5B |
| NVIDIA CORPNVDA | 151 funds | $353.3B |
| ALPHABET INC-CL AGOOGL | 149 funds | $145.7B |
| TESLA INCTSLA | 148 funds | $65.3B |
| ALPHABET INC-CL CGOOG | 147 funds | $114.1B |
| VISA INC-CLASS A SHARESV | 147 funds | $55.6B |
| JPMORGAN CHASE & COJPM | 144 funds | $55.1B |
| MICRON TECHNOLOGY INCMU | 144 funds | $36.4B |
Ranked by how many of ADPT's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Aug 26, 2026 | OWEN KATEY EINTERZ | Director | Sell (S) | 10K | $250K |
| Aug 18, 2026 | HERSHBERG ROBERT | Director | Sell (S) | 16K | $382K |
| Aug 18, 2026 | HERSHBERG ROBERT | Director | Sell (S) | 15K | $366K |
| Aug 18, 2026 | ROBINS CHAD M | CEO and Chairman, Director | Sell (S) | 204 | $5K |
| Aug 18, 2026 | ROBINS CHAD M | CEO and Chairman, Director | Sell (S) | 278K | $6.8M |
| Aug 17, 2026 | ROBINS CHAD M | CEO and Chairman, Director | Sell (S) | 3K | $65K |
| Aug 17, 2026 | ROBINS CHAD M | CEO and Chairman, Director | Sell (S) | 319K | $8.0M |
| Aug 17, 2026 | NEUPERT PETER M | Director | Sell (S) | 70K | $1.8M |
| Aug 17, 2026 | NEUPERT PETER M | Director | Sell (S) | 40K | $1.0M |
| Aug 17, 2026 | NEUPERT PETER M | Director | Sell (S) | 15K | $378K |
| Aug 10, 2026 | BOBULSKY SUSAN | Chief Commercial Officer, MRD | Sell (S) | 3K | $75K |
| Jul 30, 2026 | BOBULSKY SUSAN | Chief Commercial Officer, MRD | Sell (S) | 1K | $31K |
| Class | 13F holders | Value held |
|---|---|---|
| ADPTthis pagecs | 271 funds | $2.0B |
| 00650FAA7CONVERTIBLE BOND | 1 funds | $5.8M |
Same issuer, multiple share classes. The consensus leaderboards count this company once across all classes; this is the per-class detail.
Connected entities for ADPT
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/ADPT/capital-change-brief"
Use Arkolith's capital_change_brief for ADPT. 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 ADPT. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.