Who owns AKTS
Which tracked institutional funds hold AKTS, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See AKTS company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
The tracked-fund tape on AKTS is one-sided between 2026-Q1 and 2026-Q2: 57 added or opened and 8 trimmed or exited — on balance accumulating.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
AKTS’s largest tracked holder by dollar value, MPM BIOIMPACT LLC, sizes it at 9.5% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 9.5pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in AKTS divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, across 111 tracked filers holding AKTS, 79 increased or opened the position and 25 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in AKTS between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 17
- Jupiter Topco LLC$42M
- TCG Crossover Management, LLC$22M
- RENAISSANCE TECHNOLOGIES LLC$3M
- POLEN CAPITAL MANAGEMENT LLC$2M
- Tidal Investments LLC$2M
- RAYMOND JAMES FINANCIAL INC$2M
Full exits 4
- T. Rowe Price Investment Management, Inc.$38M
- JANUS HENDERSON GROUP PLC$26M
- Driehaus Capital Management LLC$3M
- Laurion Capital Management LP$2M
Largest adds
- MPM BIOIMPACT LLC$69M
- EcoR1 Capital, LLC$69M
- Blue Owl Capital Holdings LP$42M
- BlackRock, Inc.$36M
- WELLINGTON MANAGEMENT GROUP LLP$23M
- RTW INVESTMENTS, LP$23M
Largest trims
- PRICE T ROWE ASSOCIATES INC /MD/$3M
- UBS Group AG$3M
- AMERIPRISE FINANCIAL INC$1M
- CITADEL ADVISORS LLC$519K
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| MPM BIOIMPACT LLC | 4,835,872 | $156M | 15.1% | 2026-Q2 |
| EcoR1 Capital, LLC | 4,824,469 | $155M | 15.0% | 2026-Q2 |
| Blue Owl Capital Holdings LP trimmed | 3,070,219 | $99M | 9.6% | 2026-Q2 |
| BlackRock, Inc. added | 2,278,358 | $73M | 7.1% | 2026-Q2 |
| WELLINGTON MANAGEMENT GROUP LLP trimmed | 1,966,244 | $63M | 6.1% | 2026-Q2 |
| RTW INVESTMENTS, LP | 1,592,043 | $51M | 5.0% | 2026-Q2 |
| RA CAPITAL MANAGEMENT, L.P. trimmed | 1,314,405 | $42M | 4.1% | 2026-Q2 |
| Jupiter Topco LLC new | 1,314,267 | $42M | 4.1% | 2026-Q2 |
| BAKER BROS. ADVISORS LP | 996,351 | $32M | 3.1% | 2026-Q2 |
| Octagon Capital Advisors LP | 960,847 | $31M | 3.0% | 2026-Q2 |
| Merck & Co., Inc. | 952,844 | $31M | 3.0% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC trimmed | 817,075 | $26M | 2.5% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ trimmed | 763,499 | $25M | 2.4% | 2026-Q2 |
| TCG Crossover Management, LLC new | 696,560 | $22M | 2.2% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 520,737 | $17M | 1.6% | 2026-Q2 |
| EVENTIDE ASSET MANAGEMENT, LLC | 507,000 | $16M | 1.6% | 2026-Q2 |
| Avidity Partners Management LP added | 484,200 | $16M | 1.5% | 2026-Q2 |
| STATE STREET CORP added | 484,010 | $16M | 1.5% | 2026-Q2 |
| a16z Capital Management, L.L.C. | 415,000 | $13M | 1.3% | 2026-Q2 |
| Alyeska Investment Group, L.P. | 290,000 | $9M | 0.9% | 2026-Q2 |
| FMR LLC trimmed | 285,631 | $9M | 0.9% | 2026-Q2 |
| ArrowMark Colorado Holdings LLC trimmed | 245,872 | $8M | 0.8% | 2026-Q2 |
| NORTHERN TRUST CORP added | 180,575 | $6M | 0.6% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 166,842 | $5M | 0.5% | 2026-Q2 |
| BARCLAYS PLC added | 151,696 | $5M | 0.5% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC added | 145,220 | $5M | 0.5% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 133,834 | $4M | 0.4% | 2026-Q2 |
| TD Asset Management Inc added | 105,902 | $3M | 0.3% | 2026-Q2 |
| Woodline Partners LP | 100,000 | $3M | 0.3% | 2026-Q2 |
| SOROS FUND MANAGEMENT LLC | 100,000 | $3M | 0.3% | 2026-Q2 |
| UBS Group AG trimmed | 99,960 | $3M | 0.3% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC new | 95,400 | $3M | 0.3% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ added | 72,835 | $2M | 0.2% | 2026-Q2 |
| POLEN CAPITAL MANAGEMENT LLC new | 63,514 | $2M | 0.2% | 2026-Q2 |
| MORGAN STANLEY added | 62,636 | $2M | 0.2% | 2026-Q2 |
| Tidal Investments LLC new | 57,059 | $2M | 0.2% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC new | 50,464 | $2M | 0.2% | 2026-Q2 |
| Nuveen, LLC added | 49,816 | $2M | 0.2% | 2026-Q2 |
| Bank of New York Mellon Corp added | 49,250 | $2M | 0.2% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC new | 48,123 | $2M | 0.1% | 2026-Q2 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE added | 48,044 | $2M | 0.1% | 2026-Q2 |
| Quantinno Capital Management LP new | 46,887 | $2M | 0.1% | 2026-Q2 |
| GREAT LAKES ADVISORS, LLC new | 43,612 | $1M | 0.1% | 2026-Q2 |
| Mirador Capital Partners LP new | 40,124 | $1M | 0.1% | 2026-Q2 |
| Squarepoint Ops LLC new | 38,381 | $1M | 0.1% | 2026-Q2 |
| Jump Financial, LLC new | 32,779 | $1M | 0.1% | 2026-Q2 |
| Sofinnova Investments, Inc. new | 32,436 | $1M | 0.1% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP new | 30,914 | $996K | 0.1% | 2026-Q2 |
| READYSTATE ASSET MANAGEMENT LP | 30,000 | $967K | 0.1% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 27,659 | $891K | 0.1% | 2026-Q2 |
| RHUMBLINE ADVISERS added | 26,945 | $868K | 0.1% | 2026-Q2 |
| CITADEL ADVISORS LLC trimmed | 25,537 | $823K | 0.1% | 2026-Q2 |
| SEVEN GRAND MANAGERS, LLC | 25,000 | $806K | 0.1% | 2026-Q2 |
| Ghisallo Capital Management LLC | 25,000 | $806K | 0.1% | 2026-Q2 |
| TUDOR INVESTMENT CORP ET AL new | 21,402 | $690K | 0.1% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC trimmed | 21,278 | $686K | 0.1% | 2026-Q2 |
| DEUTSCHE BANK AG\ added | 21,022 | $678K | 0.1% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC trimmed | 20,000 | $645K | 0.1% | 2026-Q2 |
| Mariner, LLC new | 17,770 | $573K | 0.1% | 2026-Q2 |
| SEI INVESTMENTS CO new | 16,402 | $529K | 0.1% | 2026-Q2 |
| Virtus Investment Advisers, LLC new | 14,920 | $481K | 0.0% | 2026-Q2 |
| Invesco Ltd. added | 14,908 | $480K | 0.0% | 2026-Q2 |
| LOS ANGELES CAPITAL MANAGEMENT LLC new | 14,379 | $463K | 0.0% | 2026-Q2 |
| CITIGROUP INC added | 13,177 | $425K | 0.0% | 2026-Q2 |
| MetLife Investment Management, LLC added | 12,994 | $419K | 0.0% | 2026-Q2 |
| Caprock Group, LLC new | 9,908 | $319K | 0.0% | 2026-Q2 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. added | 9,769 | $315K | 0.0% | 2026-Q2 |
| JPMORGAN CHASE & CO added | 8,835 | $266K | 0.0% | 2026-Q2 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP new | 8,623 | $278K | 0.0% | 2026-Q2 |
| Russell Investments Group, Ltd. added | 7,754 | $250K | 0.0% | 2026-Q2 |
| NEW YORK STATE COMMON RETIREMENT FUND added | 7,500 | $242K | 0.0% | 2026-Q2 |
| AXQ CAPITAL, LP new | 7,020 | $226K | 0.0% | 2026-Q2 |
| Vanguard Global Advisers, LLC trimmed | 6,886 | $222K | 0.0% | 2026-Q2 |
| PNC Financial Services Group, Inc. trimmed | 6,140 | $198K | 0.0% | 2026-Q2 |
| Police & Firemen's Retirement System of New Jersey | 5,530 | $178K | 0.0% | 2026-Q2 |
| LANARK FINANCIAL, INC. new | 5,358 | $173K | 0.0% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS trimmed | 3,280 | $106K | 0.0% | 2026-Q2 |
| STRS OHIO trimmed | 3,100 | $100K | 0.0% | 2026-Q2 |
| Tower Research Capital LLC (TRC) added | 2,268 | $73K | 0.0% | 2026-Q2 |
| Pinnacle Wealth Planning Services, Inc. new | 2,267 | $73K | 0.0% | 2026-Q2 |
| Legal & General Group Plc added | 2,062 | $67K | 0.0% | 2026-Q2 |
| Ameritas Investment Partners, Inc. added | 1,925 | $62K | 0.0% | 2026-Q2 |
| SALEM INVESTMENT COUNSELORS INC | 1,000 | $32K | 0.0% | 2026-Q2 |
| State of Wyoming new | 985 | $32K | 0.0% | 2026-Q2 |
| ROYAL BANK OF CANADA new | 797 | $25K | 0.0% | 2026-Q2 |
| NATIONAL BANK OF CANADA /FI/ new | 700 | $23K | 0.0% | 2026-Q2 |
| FIFTH THIRD BANCORP new | 576 | $19K | 0.0% | 2026-Q2 |
| Rockefeller Capital Management L.P. new | 397 | $13K | 0.0% | 2026-Q2 |
| Global Retirement Partners, LLC new | 395 | $13K | 0.0% | 2026-Q2 |
| Arax Advisory Partners new | 385 | $12K | 0.0% | 2026-Q2 |
| Integrated Wealth Concepts LLC new | 310 | $10K | 0.0% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM new | 288 | $9K | 0.0% | 2026-Q2 |
| Federation des caisses Desjardins du Quebec new | 250 | $8K | 0.0% | 2026-Q2 |
| Sterling Capital Management LLC trimmed | 184 | $6K | 0.0% | 2026-Q2 |
| Allworth Financial LP new | 124 | $4K | 0.0% | 2026-Q2 |
| IFP Advisors, Inc new | 101 | $3K | 0.0% | 2026-Q2 |
| EverSource Wealth Advisors, LLC new | 80 | $3K | 0.0% | 2026-Q2 |
| Farther Finance Advisors, LLC new | 77 | $2K | 0.0% | 2026-Q2 |
| HM PAYSON & CO new | 74 | $2K | 0.0% | 2026-Q2 |
| ROTHSCHILD INVESTMENT LLC new | 39 | $1K | 0.0% | 2026-Q2 |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.