Who owns TScan Therapeutics (TCRX)
Which tracked institutional funds hold TCRX, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See TCRX 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
4 tracked funds added or opened TCRX while 3 trimmed or exited it between 2026-Q1 and 2026-Q2 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
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
TCRX’s largest tracked holder by dollar value, Lynx1 Capital Management LP, sizes it at 0.9% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.9pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in TCRX 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 57 tracked filers holding TCRX, 27 increased or opened the position and 21 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 TCRX 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 1
- BOOTHBAY FUND MANAGEMENT, LLC$757K
Full exits 1
- Aberdeen Group plc$927K
Largest adds
- TWO SIGMA INVESTMENTS, LP$690K
- CITADEL ADVISORS LLC$667K
- MARSHALL WACE, LLP$434K
Largest trims
- BlackRock, Inc.$885K
- MILLENNIUM MANAGEMENT LLC$334K
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 |
|---|---|---|---|---|
| Lynx1 Capital Management LP | 8,019,148 | $8M | 17.1% | 2026-Q2 |
| BVF INC/IL | 5,564,290 | $5M | 11.8% | 2026-Q2 |
| BAKER BROS. ADVISORS LP | 2,784,792 | $3M | 5.9% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 2,158,831 | $2M | 4.6% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP added | 1,949,604 | $2M | 4.1% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 1,326,799 | $1M | 2.8% | 2026-Q2 |
| Deer Management Co. LLC | 1,245,504 | $1M | 2.6% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC trimmed | 1,163,611 | $1M | 2.5% | 2026-Q2 |
| JACOBS LEVY EQUITY MANAGEMENT, INC added | 1,049,806 | $1M | 2.2% | 2026-Q2 |
| CITADEL ADVISORS LLC added | 1,009,107 | $989K | 2.1% | 2026-Q2 |
| BlackRock, Inc. trimmed | 994,654 | $975K | 2.1% | 2026-Q2 |
| BOOTHBAY FUND MANAGEMENT, LLC added | 772,241 | $757K | 1.6% | 2026-Q2 |
| MARSHALL WACE, LLP added | 687,364 | $674K | 1.5% | 2026-Q2 |
| DC Funds, LP | 630,000 | $617K | 1.3% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC trimmed | 584,811 | $573K | 1.2% | 2026-Q2 |
| D. E. Shaw & Co., Inc. added | 548,402 | $537K | 1.2% | 2026-Q2 |
| Kalehua Capital Management LLC new | 454,876 | $446K | 1.0% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 363,954 | $357K | 0.8% | 2026-Q2 |
| JANE STREET GROUP, LLC added | 241,493 | $237K | 0.5% | 2026-Q2 |
| Verdad Advisers, LP added | 232,759 | $228K | 0.5% | 2026-Q2 |
| STATE STREET CORP | 207,313 | $203K | 0.4% | 2026-Q2 |
| MIZUHO SECURITIES USA LLC added | 205,600 | $202K | 0.4% | 2026-Q2 |
| MORGAN STANLEY added | 197,891 | $194K | 0.4% | 2026-Q2 |
| XTX Topco Ltd added | 149,467 | $146K | 0.3% | 2026-Q2 |
| BROWN BROTHERS HARRIMAN & CO | 143,051 | $140K | 0.3% | 2026-Q2 |
| NORTHERN TRUST CORP added | 138,778 | $136K | 0.3% | 2026-Q2 |
| LETKO, BROSSEAU & ASSOCIATES INC | 95,875 | $94K | 0.2% | 2026-Q2 |
| NewEdge Wealth, LLC | 91,463 | $90K | 0.2% | 2026-Q2 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC trimmed | 76,900 | $75K | 0.2% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 70,514 | $69K | 0.1% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC added | 69,487 | $68K | 0.1% | 2026-Q2 |
| UBS Group AG added | 68,873 | $67K | 0.1% | 2026-Q2 |
| STIFEL FINANCIAL CORP trimmed | 68,200 | $67K | 0.1% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP | 65,335 | $64K | 0.1% | 2026-Q2 |
| Kestra Advisory Services, LLC | 62,525 | $61K | 0.1% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 49,100 | $48K | 0.1% | 2026-Q2 |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO added | 36,600 | $36K | 0.1% | 2026-Q2 |
| DC Investments Management, LLC | 35,563 | $35K | 0.1% | 2026-Q2 |
| LANDSCAPE CAPITAL MANAGEMENT, L.L.C. new | 25,864 | $25K | 0.1% | 2026-Q2 |
| HSBC HOLDINGS PLC | 24,574 | $24K | 0.1% | 2026-Q2 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed | 23,623 | $23K | 0.1% | 2026-Q2 |
| BARCLAYS PLC added | 19,170 | $19K | 0.0% | 2026-Q2 |
| R Squared Ltd added | 18,360 | $18K | 0.0% | 2026-Q2 |
| Vanguard Personalized Indexing Management, LLC trimmed | 17,959 | $18K | 0.0% | 2026-Q2 |
| JPMORGAN CHASE & CO added | 16,458 | $16K | 0.0% | 2026-Q2 |
| Vanguard Global Advisers, LLC | 15,705 | $15K | 0.0% | 2026-Q2 |
| OSAIC HOLDINGS, INC. added | 12,245 | $12K | 0.0% | 2026-Q2 |
| Global Retirement Partners, LLC new | 10,000 | $10K | 0.0% | 2026-Q2 |
| Aries Wealth Management | 10,000 | $10K | 0.0% | 2026-Q2 |
| FEDERATED HERMES, INC. trimmed | 3,982 | $4K | 0.0% | 2026-Q2 |
| Tower Research Capital LLC (TRC) trimmed | 2,549 | $2K | 0.0% | 2026-Q2 |
| FMR LLC added | 1,400 | $1K | 0.0% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS | 713 | $699 | 0.0% | 2026-Q2 |
| SBI Securities Co., Ltd. | 392 | $384 | 0.0% | 2026-Q2 |
| Strategic Wealth Partners, Ltd. | 311 | $305 | 0.0% | 2026-Q2 |
| Caitong International Asset Management Co., Ltd trimmed | 1 | $1 | 0.0% | 2026-Q2 |
| ROYAL BANK OF CANADA added | 78 | — | 0.0% | 2026-Q2 |
| Aberdeen Group plc trimmed | 918,020 | $927K | 2.0% | 2026-Q1 stale (1 quarter behind) |
| GSA CAPITAL PARTNERS LLP added | 378,960 | $383K | 0.8% | 2026-Q1 stale (1 quarter behind) |
| ACADIAN ASSET MANAGEMENT LLC added | 201,987 | $201K | 0.4% | 2026-Q1 stale (1 quarter behind) |
| NINE MASTS CAPITAL Ltd new | 41,740 | $42K | 0.1% | 2026-Q1 stale (1 quarter behind) |
| PRUDENTIAL FINANCIAL INC added | 29,800 | $30K | 0.1% | 2026-Q1 stale (1 quarter behind) |
| PANAGORA ASSET MANAGEMENT INC added | 28,797 | $29K | 0.1% | 2026-Q1 stale (1 quarter behind) |
| LPL Financial LLC | 22,500 | $23K | 0.0% | 2026-Q1 stale (1 quarter behind) |
| Virtu Financial LLC trimmed | 18,140 | $18K | 0.0% | 2026-Q1 stale (1 quarter behind) |
| VANGUARD GROUP INC added | 2,475,733 | $2M | 5.4% | 2025-Q4 stale (2 quarters behind) |
| TWO SIGMA ADVISERS, LP added | 353,900 | $354K | 0.8% | 2025-Q4 stale (2 quarters behind) |
| TANG CAPITAL MANAGEMENT LLC trimmed | 46,131 | $46K | 0.1% | 2025-Q4 stale (2 quarters behind) |
| HRT FINANCIAL LP trimmed | 26,581 | $26K | 0.1% | 2025-Q4 stale (2 quarters behind) |
| NEUBERGER BERMAN GROUP LLC | 18,400 | $18K | 0.0% | 2025-Q4 stale (2 quarters behind) |
| TWO SIGMA SECURITIES, LLC new | 15,942 | $16K | 0.0% | 2025-Q4 stale (2 quarters behind) |
| Point72 Asset Management, L.P. new | 14,512 | $15K | 0.0% | 2025-Q4 stale (2 quarters behind) |
| Waldron Private Wealth LLC | 10,000 | $10K | 0.0% | 2025-Q4 stale (2 quarters behind) |
| Rockefeller Capital Management L.P. | 200 | $200 | 0.0% | 2025-Q4 stale (2 quarters behind) |
| Propel Bio Management, LLC trimmed | 1,932,304 | $4M | 7.6% | 2025-Q3 stale (3 quarters behind) |
| Alphabet Inc. | 1,077,080 | $2M | 4.3% | 2025-Q3 stale (3 quarters behind) |
| Simplify Asset Management Inc. trimmed | 904,972 | $2M | 3.6% | 2025-Q3 stale (3 quarters behind) |
| Militia Capital Partners, LP added | 102,100 | $186K | 0.4% | 2025-Q3 stale (3 quarters behind) |
| Quadrature Capital Ltd added | 56,666 | $103K | 0.2% | 2025-Q3 stale (3 quarters behind) |
| Voleon Capital Management LP new | 47,879 | $87K | 0.2% | 2025-Q3 stale (3 quarters behind) |
| Cubist Systematic Strategies, LLC trimmed | 42,078 | $77K | 0.2% | 2025-Q3 stale (3 quarters behind) |
| Catalyst Funds Management Pty Ltd added | 30,763 | $56K | 0.1% | 2025-Q3 stale (3 quarters behind) |
| ALGERT GLOBAL LLC | 28,030 | $51K | 0.1% | 2025-Q3 stale (3 quarters behind) |
| Qube Research & Technologies Ltd trimmed | 27,675 | $50K | 0.1% | 2025-Q3 stale (3 quarters behind) |
| Mariner, LLC trimmed | 16,031 | $29K | 0.1% | 2025-Q3 stale (3 quarters behind) |
| Point72 Asia (Singapore) Pte. Ltd. trimmed | 14,535 | $26K | 0.1% | 2025-Q3 stale (3 quarters behind) |
| China Universal Asset Management Co., Ltd. trimmed | 9,197 | $17K | 0.0% | 2025-Q3 stale (3 quarters behind) |
| Mirae Asset Global Investments Co., Ltd. added | 2,029 | $4K | 0.0% | 2025-Q3 stale (3 quarters behind) |
| GF FUND MANAGEMENT CO. LTD. trimmed | 1,020 | $2K | 0.0% | 2025-Q3 stale (3 quarters behind) |
| NISA INVESTMENT ADVISORS, LLC trimmed | 593 | $1K | 0.0% | 2025-Q3 stale (3 quarters behind) |
| Rialto Wealth Management, LLC | 381 | $694 | 0.0% | 2025-Q3 stale (3 quarters behind) |
| Troluce Capital Advisors LLC added | 150,000 | $218K | 0.5% | 2025-Q2 stale (4 quarters behind) |
| Y-Intercept (Hong Kong) Ltd new | 76,660 | $111K | 0.2% | 2025-Q2 stale (4 quarters behind) |
| Jain Global LLC new | 37,888 | $55K | 0.1% | 2025-Q2 stale (4 quarters behind) |
| Squarepoint Ops LLC added | 22,497 | $33K | 0.1% | 2025-Q2 stale (4 quarters behind) |
| AQR CAPITAL MANAGEMENT LLC added | 22,438 | $33K | 0.1% | 2025-Q2 stale (4 quarters behind) |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 22,171 | $32K | 0.1% | 2025-Q2 stale (4 quarters behind) |
| Dynamic Technology Lab Private Ltd new | 13,878 | $20K | 0.0% | 2025-Q2 stale (4 quarters behind) |
| DRW Securities, LLC new | 10,132 | $15K | 0.0% | 2025-Q2 stale (4 quarters behind) |
| WELLS FARGO & COMPANY/MN trimmed | 323 | $468 | 0.0% | 2025-Q2 stale (4 quarters behind) |
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.