ERAS · Erasca, Inc. · Shareholders & Ownership
Every disclosed holder of ERAS in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.
Who Owns ERAS
13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positionsNo chart: the summed disclosures exceed shares outstanding, so they are not parts of one whole.
| Holder group | Shares | % Out |
|---|---|---|
| Institutional (13F) | 283,756,823 | 81.13% |
| Insiders (Forms 3, 4, 5) | 477,922 | 0.14% |
| 13D/G-only blocks | 84,132,710 | 24.05% |
| Remaining | 18,605,420 | -5.32% |
| Registered funds (N-PORT, not summed) | 79,632,618 | 22.77% |
Shares outstanding: 349,762,035, the issuer's latest cover-page count restated onto today's split basis.
Remaining is negative: the summed disclosures exceed shares outstanding, as when filings are dated at different times or holders that do not disclose their links count the same shares. It is flagged, not clipped.
13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.
Holders of ERAS
| # | Holder | Shares | As of | Notes |
|---|---|---|---|---|
| 1 |
|
36,968,486 | ||
| 2 |
Frazier Life Sciences Management, L.P.
13F
CIK 1892134 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
24,975,188 | ||
| 3 |
T. Rowe Price Investment Management, Inc.
13F
CIK 1897612 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
21,185,839 | ||
| 4 |
BlackRock, Inc.
13F
CIK 2012383 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
21,154,146 | ||
| 4.1 |
iShares Russell 2000 ETF
Fund
S000004344 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
5,137,080 | ||
| 4.2 |
iShares Russell 2000 Growth ETF
Fund
S000004343 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
1,667,210 | ||
| 4.3 |
iShares Biotechnology ETF
Fund
S000004350 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
1,325,097 | ||
| 4.4 |
BlackRock Health Sciences Opportunities Portfolio
Fund
S000001877 · Registered fund · May 29, 2026
BlackRock Funds, not summed
|
709,864 | ||
| 4.5 |
Master Small Cap Index Series
Fund
S000002716 · Registered fund · Jun 30, 2026
Quantitative Master Series LLC, not summed
|
362,015 | ||
| 5 |
RTW INVESTMENTS, LP
13F
CIK 1493215 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
17,946,754 | ||
| 6 |
Venrock Adviser, LLC
13F
CIK 1615982 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
17,891,812 | ||
| 7 |
Venrock Healthcare Capital Partners III, L.P.
13G
CIK 1738048 · Unknown · Mar 31, 2026
Rule 13d-1(c), passive investor
|
16,382,812 | ||
| 8 |
|
15,038,753 | ||
| 9 |
|
12,307,692 | ||
| 10 |
|
12,184,555 | ||
| 10.1 |
State Street(R) SPDR(R) S&P(R) Biotech ETF
Fund
S000010018 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
|
7,447,165 | ||
| 10.2 |
STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO
Fund
S000050332 · Registered fund · Jun 30, 2026
STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
|
68,000 | ||
| 10.3 |
State Street Total Return V.I.S. Fund
Fund
S000001637 · Registered fund · Jun 30, 2026
STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed
|
5,053 | ||
| 10.4 |
State Street Balanced Index Fund
Fund
S000082802 · Registered fund · Jun 30, 2026
STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
|
1,427 | ||
| 11 |
Logos Global Management LP
13F
CIK 1792126 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
12,150,000 | ||
| 12 |
VANGUARD CAPITAL MANAGEMENT LLC
13F
CIK 2100119 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
11,402,199 | ||
| 13 |
Siren, L.L.C.
13F
CIK 2005245 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
11,397,781 | ||
| 14 |
Paradigm Biocapital Advisors LP
13F
CIK 1855655 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
9,550,000 | ||
| 15 |
VANGUARD TOTAL STOCK MARKET INDEX FUND
Fund
S000002848 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
8,384,454 | ||
| 16 |
ARCH Venture Management, LLC
13F
CIK 1274403 · Exempt reporting adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
7,091,557 | ||
| 17 |
GEODE CAPITAL MANAGEMENT, LLC
13F
CIK 1214717 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
6,501,426 | ||
| 18 |
PRICE T ROWE ASSOCIATES INC /MD/
13F
CIK 80255 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
6,272,508 | ||
| 18.1 |
T. Rowe Price Capital Appreciation Fund
Fund
S000002070 · Registered fund · Jun 30, 2026
T. ROWE PRICE CAPITAL APPRECIATION FUND, INC., not summed
|
6,954,600 | ||
| 18.2 |
T. Rowe Price Small-Cap Stock Fund, Inc.
Fund
S000002120 · Registered fund · Jun 30, 2026
T. ROWE PRICE SMALL-CAP STOCK FUND, INC., not summed
|
3,334,921 | ||
| 18.3 |
T. Rowe Price Health Sciences Fund, Inc.
Fund
S000002088 · Registered fund · Jun 30, 2026
T. ROWE PRICE HEALTH SCIENCES FUND, INC., not summed
|
2,584,513 | ||
| 18.4 |
T. Rowe Price Institutional Small-Cap Stock Fund
Fund
S000002094 · Registered fund · Jun 30, 2026
T. Rowe Price Equity Funds, Inc., not summed
|
1,786,568 | ||
| 18.5 |
T. Rowe Price Integrated U.S. Small-Cap Growth Equity Fund
Fund
S000002074 · Registered fund · Jun 30, 2026
T. ROWE PRICE INTEGRATED EQUITY FUNDS, INC., not summed
|
1,435,300 | ||
| 19 |
Cormorant Asset Management, LP
13F
CIK 1583977 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
6,000,000 | ||
| 20 |
Affinity Asset Advisors, LLC
13F
CIK 1773195 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
5,250,000 | ||
| 21 |
Assenagon Asset Management S.A.
13F
CIK 1546007 · Unknown · Sep 30, 2026
|
4,128,332 | ||
| 22 |
Vivo Capital, LLC
13F
CIK 1674712 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
4,127,412 | ||
| 23 |
ALLIANCEBERNSTEIN L.P.
13F
CIK 1109448 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
4,118,614 | ||
| 23.1 |
AB Small Cap Growth Portfolio
Fund
S000010309 · Registered fund · Jun 30, 2026
AB CAP FUND, INC., not summed
|
999,951 | ||
| 23.2 |
AB DISCOVERY GROWTH FUND, INC.
Fund
S000010117 · Registered fund · Jun 30, 2026
AB DISCOVERY GROWTH FUND, INC., not summed
|
852,393 | ||
| 23.3 |
Small Cap Core Portfolio
Fund
S000051867 · Registered fund · Jun 30, 2026
Bernstein Fund Inc, not summed
|
243,251 | ||
| 23.4 |
AB Small Cap Growth Portfolio
Fund
S000010435 · Registered fund · Jun 30, 2026
AB VARIABLE PRODUCTS SERIES FUND, INC., not summed
|
19,344 | ||
| 23.5 |
Tax-Aware Overlay A Portfolio
Fund
S000027648 · Registered fund · Jun 30, 2026
BERNSTEIN SANFORD C FUND INC, not summed
|
5,914 | ||
| 24 |
GOLDMAN SACHS GROUP INC
13F
CIK 886982 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
3,822,113 | ||
| 24.1 |
Goldman Sachs Small Cap Equity Insights Fund
Fund
S000009329 · Registered fund · Jul 31, 2026
Goldman Sachs Trust, not summed
|
46,793 | ||
| 24.2 |
Goldman Sachs Small Cap Growth Insights Fund
Fund
S000014930 · Registered fund · Jul 31, 2026
Goldman Sachs Trust, not summed
|
44,624 | ||
| 24.3 |
Goldman Sachs ActiveBeta(R) U.S. Small Cap Equity ETF
Fund
S000048296 · Registered fund · May 31, 2026
Goldman Sachs ETF Trust, not summed
|
27,794 | ||
| 24.4 |
Goldman Sachs Absolute Return Tracker Fund
Fund
S000020314 · Registered fund · Jun 30, 2026
GOLDMAN SACHS TRUST, not summed
|
10,362 | ||
| 24.5 |
Goldman Sachs Variable Insurance Trust Small Cap Equity Insights Fund
Fund
S000009355 · Registered fund · Jun 30, 2026
Goldman Sachs Variable Insurance Trust, not summed
|
5,821 | ||
| 25 |
SUVRETTA CAPITAL MANAGEMENT, LLC
13G
CIK 1569064 · Registered investment adviser · Mar 31, 2026
Rule 13d-1(b), qualified institution
|
3,434,967 | ||
| 26 |
BANK OF AMERICA CORP /DE/
13F
CIK 70858 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
3,048,737 | ||
| 27 |
FMR LLC
13F
CIK 315066 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,883,417 | ||
| 27.1 |
Select Biotechnology Portfolio
Fund
S000007486 · Registered fund · May 31, 2026
Fidelity Select Portfolios, not summed
|
2,533,680 | ||
| 27.2 |
Fidelity Small Cap Index Fund
Fund
S000033638 · Registered fund · Jul 31, 2026
Fidelity Salem Street Trust, not summed
|
2,409,217 | ||
| 27.3 |
Fidelity Extended Market Index Fund
Fund
S000006021 · Registered fund · May 31, 2026
Fidelity Concord Street Trust, not summed
|
1,233,143 | ||
| 27.4 |
Fidelity Total Market Index Fund
Fund
S000006026 · Registered fund · May 31, 2026
Fidelity Concord Street Trust, not summed
|
447,468 | ||
| 27.5 |
Fidelity Series Total Market Index Fund
Fund
S000065248 · Registered fund · May 31, 2026
Fidelity Concord Street Trust, not summed
|
364,924 | ||
| 28 |
a16z Capital Management, L.L.C.
13F
CIK 1540358 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,862,500 | ||
| 29 |
Woodline Partners LP
13F
CIK 1784547 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,831,867 | ||
| 30 |
JENNISON ASSOCIATES LLC
13F
CIK 53417 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,788,412 | ||
| 31 |
VANGUARD EXTENDED MARKET INDEX FUND
Fund
S000002841 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
2,746,433 | ||
| 32 |
Soleus Capital Management, L.P.
13F
CIK 1802630 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,700,000 | ||
| 33 |
VANGUARD PORTFOLIO MANAGEMENT LLC
13F
CIK 2100121 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,389,864 | ||
| 34 |
SAMLYN CAPITAL, LLC
13F
CIK 1421097 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,256,986 | ||
| 35 |
BNP PARIBAS ARBITRAGE, SA
13F
CIK 1166588 · Non-US institution · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,042,034 | ||
| 36 |
NORTHERN TRUST CORP
13F
CIK 73124 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,958,120 | ||
| 36.1 |
Small Cap Index Fund
Fund
S000001245 · Registered fund · Jun 30, 2026
Northern Funds, not summed
|
101,753 | ||
| 36.2 |
Small Cap Core Fund
Fund
S000001244 · Registered fund · Jun 30, 2026
Northern Funds, not summed
|
26,817 | ||
| 37 |
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
13F
CIK 884546 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,944,790 | ||
| 37.1 |
Schwab U.S. Small-Cap ETF
Fund
S000026636 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
|
1,147,686 | ||
| 37.2 |
Schwab Small-Cap Index Fund
Fund
S000005912 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
|
536,087 | ||
| 37.3 |
Schwab Total Stock Market Index Fund
Fund
S000005913 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
|
163,794 | ||
| 37.4 |
Schwab U.S. Broad Market ETF
Fund
S000026631 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
|
136,333 | ||
| 37.5 |
Schwab Small-Cap Equity Fund
Fund
S000005516 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
|
45,513 | ||
| 38 |
VICTORY CAPITAL MANAGEMENT INC
13F
CIK 1040188 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,936,462 | ||
| 38.1 |
Victory Pioneer Select Mid Cap Growth Fund
Fund
S000089755 · Registered fund · May 31, 2026
Victory Portfolios IV, not summed
|
1,332,535 | ||
| 38.2 |
VictoryShares US Small Mid Cap Value Momentum ETF
Fund
S000065161 · Registered fund · Jun 30, 2026
Victory Portfolios II, not summed
|
206,467 | ||
| 38.3 |
Victory Pioneer Select Mid Cap Growth VCT Portfolio
Fund
S000089715 · Registered fund · Jun 30, 2026
Victory Variable Insurance Funds II, not summed
|
94,029 | ||
| 38.4 |
Victory Small Cap Stock Fund
Fund
S000012914 · Registered fund · Jul 31, 2026
Victory Portfolios III, not summed
|
50,172 | ||
| 38.5 |
Victory Extended Market Index Fund
Fund
S000012941 · Registered fund · Jul 31, 2026
Victory Portfolios III, not summed
|
21,618 | ||
| 39 |
|
1,841,735 | ||
| 39.1 |
Nuveen Quant Small Cap Equity Fund
Fund
S000005386 · Registered fund · Jul 31, 2026
TIAA-CREF Funds, not summed
|
733,960 | ||
| 39.2 |
Nuveen Quant Small/Mid Cap Equity Fund
Fund
S000054623 · Registered fund · Jul 31, 2026
TIAA-CREF Funds, not summed
|
293,000 | ||
| 39.3 |
Nuveen Small Cap Blend Index Fund
Fund
S000005367 · Registered fund · Jul 31, 2026
TIAA-CREF Funds, not summed
|
287,792 | ||
| 39.4 |
College Retirement Equities Fund - Total Global Stock Account
Fund
S000005080 · Registered fund · Jun 30, 2026
College Retirement Equities Fund, not summed
|
282,316 | ||
| 39.5 |
Nuveen Equity Index Fund
Fund
S000005360 · Registered fund · Jul 31, 2026
TIAA-CREF Funds, not summed
|
157,959 | ||
| 40 |
DIMENSIONAL FUND ADVISORS LP
13F
CIK 354204 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,763,980 | ||
| 40.1 |
Dimensional U.S. Core Equity 2 ETF
Fund
S000070903 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
|
402,637 | ||
| 40.2 |
U.S. SMALL CAP PORTFOLIO
Fund
S000000971 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
|
336,298 | ||
| 40.3 |
Dimensional U.S. Small Cap ETF
Fund
S000070906 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
|
263,455 | ||
| 40.4 |
U.S. MICRO CAP PORTFOLIO
Fund
S000000948 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
|
152,063 | ||
| 40.5 |
Dimensional U.S. Equity Market ETF
Fund
S000070902 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
|
33,981 | ||
| 41 |
VANGUARD FIDUCIARY TRUST CO
13F
CIK 933478 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,697,991 | ||
| 42 |
|
1,596,662 | ||
| 43 |
STEMPOINT CAPITAL LP
13F
CIK 1952142 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,565,913 | ||
| 44 |
JNL/T. Rowe Price Capital Appreciation Fund
Fund
S000068115 · Registered fund · Jun 30, 2026
JNL Series Trust, not summed
|
1,523,521 | ||
| 45 |
Rock Springs Capital Management LP
13F
CIK 1595725 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,402,150 | ||
| 46 |
Evergreen Quality Fund GP, Ltd.
13F
CIK 2016939 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,375,300 | ||
| 47 |
RENAISSANCE TECHNOLOGIES LLC
13F
CIK 1037389 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,368,918 | ||
| 48 |
FRED ALGER MANAGEMENT, LLC
13F
CIK 3520 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,308,455 | ||
| 48.1 |
ALGER SMALL CAP FOCUS FUND
Fund
S000020958 · Registered fund · Jul 31, 2026
ALGER FUNDS, not summed
|
954,145 | ||
| 48.2 |
ALGER SMALL CAP GROWTH FUND
Fund
S000009160 · Registered fund · Jul 31, 2026
ALGER FUNDS, not summed
|
130,062 | ||
| 48.3 |
Alger Small Cap Growth Portfolio
Fund
S000009215 · Registered fund · Jun 30, 2026
ALGER PORTFOLIOS, not summed
|
76,940 | ||
| 48.4 |
ALGER SMALL CAP GROWTH INSTITUTIONAL FUND
Fund
S000009202 · Registered fund · Jul 31, 2026
ALGER INSTITUTIONAL FUNDS, not summed
|
50,518 | ||
| 48.5 |
ALGER HEALTH SCIENCES FUND
Fund
S000009164 · Registered fund · Jul 31, 2026
ALGER FUNDS, not summed
|
32,291 | ||
| 49 |
SILVERARC CAPITAL MANAGEMENT, LLC
13F
CIK 1816307 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,263,026 | ||
| 50 |
Point72 Asset Management, L.P.
13F
CIK 1603466 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,247,203 |
49 more nested rows are not shown here; Every filing lists them all.
Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.
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