Who owns IPSC (IPSC)
Which tracked institutional funds hold IPSC, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See IPSC company fundamentals →
Ownership as of the 2026-Q1 13F filings. 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 IPSC is one-sided between 2025-Q4 and 2026-Q1: 31 added or opened and 3 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
IPSC’s largest tracked holder by dollar value, RA CAPITAL MANAGEMENT, L.P., sizes it at 0.4% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.4pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in IPSC 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 2025-Q4 and 2026-Q1, across 71 tracked filers holding IPSC, 47 increased or opened the position and 18 reduced or closed it; over the same quarter, open-market insider Form 4 buying and selling roughly offset.
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 IPSC between the 2025-Q4 and 2026-Q1 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 15
- RA CAPITAL MANAGEMENT, L.P.$40M
- TCG Crossover Management, LLC$39M
- Versant Venture Management, LLC$27M
- Deep Track Capital, LP$21M
- RTW INVESTMENTS, LP$20M
- Venrock Adviser, LLC$20M
Full exits 2
- VANGUARD GROUP INC$2M
- TWO SIGMA ADVISERS, LP$1M
Largest adds
- MILLENNIUM MANAGEMENT LLC$10M
- Spruce Street Capital LP$8M
- Point72 Asset Management, L.P.$8M
- ADAGE CAPITAL PARTNERS GP, L.L.C.$7M
- TWO SIGMA INVESTMENTS, LP$4M
- BlackRock, Inc.$3M
Largest trims
- ACADIAN ASSET MANAGEMENT LLC$582K
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. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| RA CAPITAL MANAGEMENT, L.P. added | 17,754,430 | $40M | 12.7% | 2026-Q1 |
| TCG Crossover Management, LLC new | 17,754,430 | $39M | 12.4% | 2026-Q1 |
| Versant Venture Management, LLC new | 12,166,109 | $27M | 8.7% | 2026-Q1 |
| Deep Track Capital, LP added | 9,487,745 | $21M | 6.8% | 2026-Q1 |
| Commodore Capital LP new | 8,695,652 | $20M | 6.2% | 2026-Q1 |
| RTW INVESTMENTS, LP new | 8,695,652 | $20M | 6.2% | 2026-Q1 |
| Venrock Adviser, LLC added | 8,695,652 | $20M | 6.2% | 2026-Q1 |
| Point72 Asset Management, L.P. added | 5,964,678 | $13M | 4.3% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 5,686,204 | $13M | 4.1% | 2026-Q1 |
| BALYASNY ASSET MANAGEMENT L.P. new | 5,017,733 | $11M | 3.6% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC added | 4,667,063 | $11M | 3.3% | 2026-Q1 |
| Spruce Street Capital LP added | 4,059,054 | $9M | 2.9% | 2026-Q1 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. added | 3,789,538 | $9M | 2.7% | 2026-Q1 |
| Woodline Partners LP added | 3,043,478 | $7M | 2.2% | 2026-Q1 |
| Seven Fleet Capital Management LP new | 2,947,826 | $7M | 2.1% | 2026-Q1 |
| Trails Edge Capital Partners, LP new | 2,449,993 | $6M | 1.8% | 2026-Q1 |
| DAFNA Capital Management LLC trimmed | 2,434,353 | $6M | 1.7% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP added | 2,371,430 | $5M | 1.7% | 2026-Q1 |
| BlackRock, Inc. added | 1,524,422 | $3M | 1.1% | 2026-Q1 |
| Rock Springs Capital Management LP new | 1,304,347 | $3M | 0.9% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 1,301,664 | $3M | 0.9% | 2026-Q1 |
| Casdin Capital, LLC | 1,228,190 | $3M | 0.9% | 2026-Q1 |
| Syncona Portfolio Ltd | 1,213,056 | $3M | 0.9% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 906,827 | $2M | 0.6% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 692,963 | $2M | 0.5% | 2026-Q1 |
| MARSHALL WACE, LLP added | 673,584 | $2M | 0.5% | 2026-Q1 |
| STATE STREET CORP added | 386,723 | $874K | 0.3% | 2026-Q1 |
| ACADIAN ASSET MANAGEMENT LLC trimmed | 278,075 | $627K | 0.2% | 2026-Q1 |
| NORTHERN TRUST CORP added | 230,820 | $522K | 0.2% | 2026-Q1 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 226,687 | $512K | 0.2% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 210,482 | $476K | 0.2% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 145,099 | $328K | 0.1% | 2026-Q1 |
| BARCLAYS PLC added | 120,232 | $272K | 0.1% | 2026-Q1 |
| Squarepoint Ops LLC trimmed | 119,504 | $270K | 0.1% | 2026-Q1 |
| SUPERSTRING CAPITAL MANAGEMENT LP trimmed | 119,308 | $270K | 0.1% | 2026-Q1 |
| Brevan Howard Capital Management LP new | 96,641 | $218K | 0.1% | 2026-Q1 |
| RAYMOND JAMES FINANCIAL INC | 91,323 | $206K | 0.1% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 79,415 | $179K | 0.1% | 2026-Q1 |
| GSA CAPITAL PARTNERS LLP trimmed | 76,836 | $174K | 0.1% | 2026-Q1 |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC | 77,797 | $166K | 0.1% | 2026-Q1 |
| Invesco Ltd. new | 62,109 | $140K | 0.0% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC new | 58,742 | $133K | 0.0% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP added | 55,183 | $122K | 0.0% | 2026-Q1 |
| Cannon Global Investment Management, LLC new | 49,000 | $111K | 0.0% | 2026-Q1 |
| OMERS ADMINISTRATION Corp new | 47,800 | $108K | 0.0% | 2026-Q1 |
| Vanguard Global Advisers, LLC new | 44,616 | $101K | 0.0% | 2026-Q1 |
| Tower Research Capital LLC (TRC) added | 32,987 | $75K | 0.0% | 2026-Q1 |
| HarbourVest Partners LLC | 29,018 | $66K | 0.0% | 2026-Q1 |
| Parametrica Management Ltd | 27,840 | $63K | 0.0% | 2026-Q1 |
| MORGAN STANLEY added | 26,249 | $59K | 0.0% | 2026-Q1 |
| PRUDENTIAL FINANCIAL INC trimmed | 25,300 | $57K | 0.0% | 2026-Q1 |
| XTX Topco Ltd added | 22,518 | $51K | 0.0% | 2026-Q1 |
| Quadrant Private Wealth Management, LLC added | 20,022 | $45K | 0.0% | 2026-Q1 |
| UBS Group AG trimmed | 14,215 | $32K | 0.0% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 12,897 | $29K | 0.0% | 2026-Q1 |
| SIMPLEX TRADING, LLC added | 9,028 | $20K | 0.0% | 2026-Q1 |
| FMR LLC trimmed | 8,779 | $20K | 0.0% | 2026-Q1 |
| Advisors Asset Management, Inc. | 8,313 | $19K | 0.0% | 2026-Q1 |
| ROYAL BANK OF CANADA added | 4,394 | $9K | 0.0% | 2026-Q1 |
| Farther Finance Advisors, LLC new | 2,500 | $5K | 0.0% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS trimmed | 1,418 | $3K | 0.0% | 2026-Q1 |
| SBI Securities Co., Ltd. trimmed | 1,260 | $3K | 0.0% | 2026-Q1 |
| VANGUARD GROUP INC | 2,103,869 | $2M | 0.7% | 2025-Q4 stale |
| Bain Capital Life Sciences Investors, LLC trimmed | 3,538,609 | $2M | 0.6% | 2025-Q3 stale |
| TWO SIGMA ADVISERS, LP added | 1,267,700 | $1M | 0.4% | 2025-Q4 stale |
| TANG CAPITAL MANAGEMENT LLC | 900,000 | $448K | 0.1% | 2025-Q3 stale |
| CITADEL ADVISORS LLC trimmed | 319,457 | $318K | 0.1% | 2025-Q4 stale |
| BAKER BROS. ADVISORS LP trimmed | 241,684 | $115K | 0.0% | 2025-Q1 stale |
| ALGERT GLOBAL LLC new | 76,800 | $76K | 0.0% | 2025-Q4 stale |
| Nuveen, LLC new | 157,311 | $75K | 0.0% | 2025-Q1 stale |
| Y-Intercept (Hong Kong) Ltd new | 89,975 | $50K | 0.0% | 2025-Q2 stale |
| DEUTSCHE BANK AG\ trimmed | 96,140 | $46K | 0.0% | 2025-Q1 stale |
| JANE STREET GROUP, LLC trimmed | 45,194 | $45K | 0.0% | 2025-Q4 stale |
| PANAGORA ASSET MANAGEMENT INC trimmed | 90,739 | $43K | 0.0% | 2025-Q1 stale |
| LAZARD ASSET MANAGEMENT LLC added | 62,947 | $35K | 0.0% | 2025-Q2 stale |
| SEI INVESTMENTS CO | 52,748 | $25K | 0.0% | 2025-Q1 stale |
| RHUMBLINE ADVISERS added | 43,273 | $21K | 0.0% | 2025-Q1 stale |
| INTECH INVESTMENT MANAGEMENT LLC added | 35,814 | $17K | 0.0% | 2025-Q1 stale |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC trimmed | 26,700 | $15K | 0.0% | 2025-Q2 stale |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. added | 27,447 | $13K | 0.0% | 2025-Q1 stale |
| IEQ CAPITAL, LLC trimmed | 22,419 | $13K | 0.0% | 2025-Q2 stale |
| Scientech Research LLC new | 12,355 | $12K | 0.0% | 2025-Q4 stale |
| SG Americas Securities, LLC added | 25,314 | $12K | 0.0% | 2025-Q1 stale |
| BLUEFIN CAPITAL MANAGEMENT, LLC new | 24,018 | $12K | 0.0% | 2025-Q3 stale |
| Corebridge Financial, Inc. trimmed | 22,925 | $11K | 0.0% | 2025-Q1 stale |
| Abel Hall, LLC added | 17,582 | $10K | 0.0% | 2025-Q2 stale |
| ALLIANCEBERNSTEIN L.P. | 20,020 | $10K | 0.0% | 2025-Q1 stale |
| HRT FINANCIAL LP trimmed | 18,113 | $9K | 0.0% | 2025-Q3 stale |
| Point72 Asia (Singapore) Pte. Ltd. trimmed | 17,861 | $9K | 0.0% | 2025-Q3 stale |
| Qube Research & Technologies Ltd trimmed | 17,501 | $9K | 0.0% | 2025-Q3 stale |
| PRICE T ROWE ASSOCIATES INC /MD/ | 14,882 | $8K | 0.0% | 2025-Q1 stale |
| Cerity Partners LLC new | 14,260 | $7K | 0.0% | 2025-Q1 stale |
| TWO SIGMA SECURITIES, LLC new | 11,767 | $7K | 0.0% | 2025-Q2 stale |
| NEW YORK STATE COMMON RETIREMENT FUND | 13,743 | $7K | 0.0% | 2025-Q1 stale |
| Ground Swell Capital, LLC new | 10,176 | $6K | 0.0% | 2025-Q2 stale |
| Jain Global LLC trimmed | 11,241 | $6K | 0.0% | 2025-Q3 stale |
| AQR CAPITAL MANAGEMENT LLC trimmed | 10,660 | $5K | 0.0% | 2025-Q3 stale |
| CIBC WORLD MARKETS CORP new | 10,384 | $5K | 0.0% | 2025-Q1 stale |
| ProShare Advisors LLC trimmed | 10,131 | $5K | 0.0% | 2025-Q1 stale |
| PNC Financial Services Group, Inc. new | 7,027 | $3K | 0.0% | 2025-Q1 stale |
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.