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-Q1 13F filings (latest filed 2026-05-28). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
Conviction spread
AKTS’s largest tracked holder by dollar value, MPM BIOIMPACT LLC, sizes it at 6.7% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 6.7pp 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
Only one quarter (2026-Q1) of 13F history is available — a quarter-over-quarter accumulation delta needs two.
We do not publish a positioning read for a window we cannot measure honestly. A starting question, not a verdict.
Institutional holders
One row per tracked fund, largest reported value first. “% 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 new | 4,835,872 | $87M | 12.4% | 2026-Q1 |
| EcoR1 Capital, LLC new | 4,824,469 | $86M | 12.4% | 2026-Q1 |
| BlackRock, Inc. added | 2,278,358 | $73M | 10.6% | 2026-Q2 |
| WELLINGTON MANAGEMENT GROUP LLP trimmed | 1,966,244 | $63M | 9.1% | 2026-Q2 |
| Blue Owl Capital Holdings LP new | 3,161,348 | $57M | 8.1% | 2026-Q1 |
| T. Rowe Price Investment Management, Inc. new | 2,123,812 | $38M | 5.5% | 2026-Q1 |
| RTW INVESTMENTS, LP new | 1,592,043 | $28M | 4.1% | 2026-Q1 |
| RA CAPITAL MANAGEMENT, L.P. new | 1,503,084 | $27M | 3.9% | 2026-Q1 |
| JANUS HENDERSON GROUP PLC new | 1,454,267 | $26M | 3.7% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ trimmed | 763,499 | $25M | 3.5% | 2026-Q2 |
| BAKER BROS. ADVISORS LP new | 996,351 | $18M | 2.6% | 2026-Q1 |
| Octagon Capital Advisors LP new | 960,847 | $17M | 2.5% | 2026-Q1 |
| Merck & Co., Inc. new | 952,844 | $17M | 2.5% | 2026-Q1 |
| STATE STREET CORP added | 484,010 | $16M | 2.2% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 833,913 | $15M | 2.1% | 2026-Q1 |
| FMR LLC trimmed | 285,631 | $9M | 1.3% | 2026-Q2 |
| EVENTIDE ASSET MANAGEMENT, LLC new | 507,000 | $9M | 1.3% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC new | 491,936 | $9M | 1.3% | 2026-Q1 |
| Avidity Partners Management LP new | 468,566 | $8M | 1.2% | 2026-Q1 |
| a16z Capital Management, L.L.C. new | 415,000 | $7M | 1.1% | 2026-Q1 |
| UBS Group AG new | 353,263 | $6M | 0.9% | 2026-Q1 |
| ArrowMark Colorado Holdings LLC new | 329,471 | $6M | 0.8% | 2026-Q1 |
| Alyeska Investment Group, L.P. new | 290,000 | $5M | 0.7% | 2026-Q1 |
| SOROS FUND MANAGEMENT LLC | 100,000 | $3M | 0.5% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC new | 95,400 | $3M | 0.4% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC new | 162,017 | $3M | 0.4% | 2026-Q1 |
| Driehaus Capital Management LLC new | 150,000 | $3M | 0.4% | 2026-Q1 |
| NORTHERN TRUST CORP new | 149,476 | $3M | 0.4% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 127,395 | $2M | 0.3% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 120,322 | $2M | 0.3% | 2026-Q1 |
| POLEN CAPITAL MANAGEMENT LLC new | 63,514 | $2M | 0.3% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC new | 102,925 | $2M | 0.3% | 2026-Q1 |
| TD Asset Management Inc new | 100,962 | $2M | 0.3% | 2026-Q1 |
| Laurion Capital Management LP new | 100,000 | $2M | 0.3% | 2026-Q1 |
| Woodline Partners LP new | 100,000 | $2M | 0.3% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC new | 48,123 | $2M | 0.2% | 2026-Q2 |
| CITADEL ADVISORS LLC new | 75,000 | $1M | 0.2% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ new | 69,926 | $1M | 0.2% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP new | 30,914 | $996K | 0.1% | 2026-Q2 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE new | 46,993 | $841K | 0.1% | 2026-Q1 |
| Bank of New York Mellon Corp new | 42,901 | $767K | 0.1% | 2026-Q1 |
| TUDOR INVESTMENT CORP ET AL new | 21,402 | $690K | 0.1% | 2026-Q2 |
| MORGAN STANLEY new | 30,723 | $550K | 0.1% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC new | 30,163 | $540K | 0.1% | 2026-Q1 |
| READYSTATE ASSET MANAGEMENT LP new | 30,000 | $537K | 0.1% | 2026-Q1 |
| Invesco Ltd. added | 14,908 | $480K | 0.1% | 2026-Q2 |
| Ghisallo Capital Management LLC new | 25,000 | $447K | 0.1% | 2026-Q1 |
| SEVEN GRAND MANAGERS, LLC new | 25,000 | $447K | 0.1% | 2026-Q1 |
| Nuveen, LLC new | 24,468 | $438K | 0.1% | 2026-Q1 |
| RHUMBLINE ADVISERS new | 21,033 | $376K | 0.1% | 2026-Q1 |
| D. E. Shaw & Co., Inc. new | 17,062 | $305K | 0.0% | 2026-Q1 |
| Zimmer Partners, LP new | 15,000 | $268K | 0.0% | 2026-Q1 |
| Universal- Beteiligungs- und Servicegesellschaft mbH new | 14,185 | $254K | 0.0% | 2026-Q1 |
| DEUTSCHE BANK AG\ new | 14,080 | $252K | 0.0% | 2026-Q1 |
| XTX Topco Ltd new | 13,990 | $250K | 0.0% | 2026-Q1 |
| MetLife Investment Management, LLC new | 11,637 | $208K | 0.0% | 2026-Q1 |
| BARCLAYS PLC new | 9,724 | $174K | 0.0% | 2026-Q1 |
| Vanguard Global Advisers, LLC new | 9,689 | $173K | 0.0% | 2026-Q1 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. new | 9,651 | $173K | 0.0% | 2026-Q1 |
| JPMORGAN CHASE & CO new | 8,355 | $138K | 0.0% | 2026-Q1 |
| WELLS FARGO & COMPANY/MN new | 7,611 | $136K | 0.0% | 2026-Q1 |
| PNC FINANCIAL SERVICES GROUP, INC. new | 6,948 | $124K | 0.0% | 2026-Q1 |
| Police & Firemen's Retirement System of New Jersey new | 5,530 | $99K | 0.0% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS new | 4,480 | $80K | 0.0% | 2026-Q1 |
| STRS OHIO new | 3,600 | $64K | 0.0% | 2026-Q1 |
| NEW YORK STATE COMMON RETIREMENT FUND new | 3,200 | $57K | 0.0% | 2026-Q1 |
| Legal & General Group Plc new | 1,826 | $33K | 0.0% | 2026-Q1 |
| Ameritas Investment Partners, Inc. new | 1,683 | $30K | 0.0% | 2026-Q1 |
| Russell Investments Group, Ltd. new | 1,551 | $28K | 0.0% | 2026-Q1 |
| CITIGROUP INC new | 1,019 | $18K | 0.0% | 2026-Q1 |
| Tower Research Capital LLC (TRC) new | 1,009 | $18K | 0.0% | 2026-Q1 |
| SALEM INVESTMENT COUNSELORS INC new | 1,000 | $18K | 0.0% | 2026-Q1 |
| Sterling Capital Management LLC new | 393 | $7K | 0.0% | 2026-Q1 |
| CWM, LLC new | 21 | $376 | 0.0% | 2026-Q1 |
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.