ANAB · Anaptysbio, Inc · Shareholders & Ownership
Every disclosed holder of ANAB 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 ANAB
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) | 30,189,929 | 103.74% |
| Insiders (Forms 3, 4, 5) | 980,337 | 3.37% |
| 13D/G-only blocks | 5,195,690 | 17.85% |
| Remaining | 7,265,054 | -24.97% |
| Registered funds (N-PORT, not summed) | 6,777,646 | 23.29% |
Shares outstanding: 29,100,902, 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 ANAB
| # | Holder | Shares | As of | Notes |
|---|---|---|---|---|
| 1 |
EcoR1 Capital, LLC
13F
CIK 1587114 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
7,880,094 | ||
| 1.1 |
|
11,820,141 | ||
| 2 |
TANG CAPITAL MANAGEMENT, LLC
13G
CIK 1191935 · Unknown · Dec 31, 2023
Rule 13d-1(c), passive investor
|
2,925,914 | ||
| 3 |
BlackRock, Inc.
13F
CIK 2012383 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,844,049 | ||
| 3.1 |
iShares Russell 2000 ETF
Fund
S000004344 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
514,945 | ||
| 3.2 |
iShares Biotechnology ETF
Fund
S000004350 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
193,528 | ||
| 3.3 |
iShares Russell 2000 Growth ETF
Fund
S000004343 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
185,548 | ||
| 3.4 |
Master Small Cap Index Series
Fund
S000002716 · Registered fund · Jun 30, 2026
Quantitative Master Series LLC, not summed
|
36,931 | ||
| 3.5 |
iShares Core S&P Total U.S. Stock Market ETF
Fund
S000004317 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
29,157 | ||
| 4 |
Sirenia Capital Management LP
13G
CIK 2115022 · Registered investment adviser · Jun 30, 2026
Rule 13d-1(b), qualified institution
|
1,491,959 | ||
| 5 |
TANG CAPITAL MANAGEMENT LLC
13F
CIK 1232621 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,330,879 | ||
| 6 |
|
1,286,194 | ||
| 6.1 |
State Street(R) SPDR(R) S&P(R) Biotech ETF
Fund
S000010018 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
|
786,627 | ||
| 6.2 |
STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO
Fund
S000050332 · Registered fund · Jun 30, 2026
STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
|
6,614 | ||
| 6.3 |
State Street Total Return V.I.S. Fund
Fund
S000001637 · Registered fund · Jun 30, 2026
STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed
|
499 | ||
| 6.4 |
State Street(R) SPDR(R) Portfolio MSCI Global Stock Market ETF
Fund
S000036082 · Registered fund · Jun 30, 2026
SPDR INDEX SHARES FUNDS, not summed
|
356 | ||
| 6.5 |
State Street Balanced Index Fund
Fund
S000082802 · Registered fund · Jun 30, 2026
STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
|
65 | ||
| 7 |
VANGUARD CAPITAL MANAGEMENT LLC
13F
CIK 2100119 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
906,233 | ||
| 8 |
Affinity Asset Advisors, LLC
13F
CIK 1773195 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
826,109 | ||
| 9 |
|
821,917 | ||
| 10 |
MILLENNIUM MANAGEMENT LLC
13F
CIK 1273087 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
807,316 | ||
| 11 |
|
743,948 | ||
| 12 |
Woodline Partners LP
13F
CIK 1784547 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
717,014 | ||
| 13 |
|
694,862 | ||
| 14 |
683 Capital Management, LLC
13F
CIK 1404574 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
660,000 | ||
| 15 |
VANGUARD TOTAL STOCK MARKET INDEX FUND
Fund
S000002848 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
648,146 | ||
| 16 |
GEODE CAPITAL MANAGEMENT, LLC
13F
CIK 1214717 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
637,873 | ||
| 17 |
Palo Alto Investors LP
13F
CIK 1306923 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
603,489 | ||
| 18 |
GOLDMAN SACHS GROUP INC
13F
CIK 886982 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
584,070 | ||
| 18.1 |
Goldman Sachs Small Cap Equity Insights Fund
Fund
S000009329 · Registered fund · Jul 31, 2026
Goldman Sachs Trust, not summed
|
46,070 | ||
| 18.2 |
Goldman Sachs Small Cap Growth Insights Fund
Fund
S000014930 · Registered fund · Jul 31, 2026
Goldman Sachs Trust, not summed
|
19,276 | ||
| 18.3 |
Goldman Sachs Small Cap Value Insights Fund
Fund
S000014929 · Registered fund · Jul 31, 2026
Goldman Sachs Trust, not summed
|
14,409 | ||
| 18.4 |
Goldman Sachs ActiveBeta(R) U.S. Small Cap Equity ETF
Fund
S000048296 · Registered fund · May 31, 2026
Goldman Sachs ETF Trust, not summed
|
7,749 | ||
| 18.5 |
Goldman Sachs Variable Insurance Trust Small Cap Equity Insights Fund
Fund
S000009355 · Registered fund · Jun 30, 2026
Goldman Sachs Variable Insurance Trust, not summed
|
2,737 | ||
| 19 |
First Light Asset Management, LLC
13F
CIK 1600004 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
582,004 | ||
| 20 |
D. E. Shaw & Co., Inc.
13F
CIK 1009207 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
539,666 | ||
| 21 |
VANGUARD PORTFOLIO MANAGEMENT LLC
13F
CIK 2100121 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
527,858 | ||
| 22 |
Apis Capital Advisors, LLC
13F
CIK 1386892 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
497,000 | ||
| 23 |
Sofinnova Investments, Inc.
13F
CIK 1631134 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
493,536 | ||
| 24 |
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
13F
CIK 1164508 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
488,651 | ||
| 25 |
|
420,664 | ||
| 25.1 |
Nuveen Quant Small Cap Equity Fund
Fund
S000005386 · Registered fund · Jul 31, 2026
TIAA-CREF Funds, not summed
|
263,840 | ||
| 25.2 |
College Retirement Equities Fund - Total Global Stock Account
Fund
S000005080 · Registered fund · Jun 30, 2026
College Retirement Equities Fund, not summed
|
43,899 | ||
| 25.3 |
Nuveen Quant Small/Mid Cap Equity Fund
Fund
S000054623 · Registered fund · Jul 31, 2026
TIAA-CREF Funds, not summed
|
28,500 | ||
| 25.4 |
Nuveen Small Cap Blend Index Fund
Fund
S000005367 · Registered fund · Jul 31, 2026
TIAA-CREF Funds, not summed
|
26,172 | ||
| 25.5 |
Nuveen Equity Index Fund
Fund
S000005360 · Registered fund · Jul 31, 2026
TIAA-CREF Funds, not summed
|
15,596 | ||
| 26 |
BANK OF AMERICA CORP /DE/
13F
CIK 70858 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
417,812 | ||
| 27 |
CITADEL ADVISORS LLC
13F
CIK 1423053 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
394,373 | ||
| 28 |
FEDERATED HERMES, INC.
13F
CIK 1056288 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
391,667 | ||
| 29 |
Squarepoint Ops LLC
13F
CIK 1642575 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
324,446 | ||
| 30 |
TWO SIGMA INVESTMENTS, LP
13F
CIK 1179392 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
262,995 | ||
| 31 |
FIRST TRUST ADVISORS LP
13F
CIK 1125816 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
258,989 | ||
| 31.1 |
First Trust Small Cap Growth AlphaDEX Fund
Fund
S000031806 · Registered fund · Jul 31, 2026
First Trust Exchange-Traded AlphaDEX Fund, not summed
|
130,011 | ||
| 31.2 |
First Trust Small Cap Core AlphaDEX Fund
Fund
S000017339 · Registered fund · Jul 31, 2026
First Trust Exchange-Traded AlphaDEX Fund, not summed
|
64,617 | ||
| 31.3 |
First Trust Multi Cap Growth AlphaDEX Fund
Fund
S000017343 · Registered fund · Jul 31, 2026
First Trust Exchange-Traded AlphaDEX Fund, not summed
|
11,777 | ||
| 31.4 |
First Trust Active Factor Small Cap ETF
Fund
S000066790 · Registered fund · Aug 31, 2026
First Trust Exchange-Traded Fund VIII, not summed
|
8,486 | ||
| 32 |
MORGAN STANLEY
13F
CIK 895421 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
257,091 | ||
| 33 |
FMR LLC
13F
CIK 315066 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
240,511 | ||
| 33.1 |
Fidelity Small Cap Index Fund
Fund
S000033638 · Registered fund · Jul 31, 2026
Fidelity Salem Street Trust, not summed
|
215,873 | ||
| 33.2 |
Fidelity Extended Market Index Fund
Fund
S000006021 · Registered fund · May 31, 2026
Fidelity Concord Street Trust, not summed
|
101,648 | ||
| 33.3 |
Fidelity SAI Small-Mid Cap Momentum Index Fund
Fund
S000050321 · Registered fund · Jul 31, 2026
Fidelity Salem Street Trust, not summed
|
60,059 | ||
| 33.4 |
Fidelity Small-Mid Multifactor ETF
Fund
S000064786 · Registered fund · Jul 31, 2026
Fidelity Covington Trust, not summed
|
44,946 | ||
| 33.5 |
Fidelity Total Market Index Fund
Fund
S000006026 · Registered fund · May 31, 2026
Fidelity Concord Street Trust, not summed
|
37,064 | ||
| 34 |
VANGUARD EXTENDED MARKET INDEX FUND
Fund
S000002841 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
237,032 | ||
| 35 |
Qube Research & Technologies Ltd
13F
CIK 1729829 · Exempt reporting adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
228,777 | ||
| 36 |
HSBC HOLDINGS PLC
13F
CIK 873630 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
216,949 | ||
| 37 |
Federated Hermes Kaufmann Small Cap Fund
Fund
S000009730 · Registered fund · Jul 31, 2026
Federated Hermes Equity Funds, not summed
|
210,000 | ||
| 38 |
Empowered Funds, LLC
13F
CIK 1592828 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
206,010 | ||
| 39 |
NORTHERN TRUST CORP
13F
CIK 73124 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
202,767 | ||
| 39.1 |
Small Cap Index Fund
Fund
S000001245 · Registered fund · Jun 30, 2026
Northern Funds, not summed
|
9,980 | ||
| 39.2 |
Small Cap Core Fund
Fund
S000001244 · Registered fund · Jun 30, 2026
Northern Funds, not summed
|
7,064 | ||
| 40 |
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
13F
CIK 884546 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
202,305 | ||
| 40.1 |
Schwab U.S. Small-Cap ETF
Fund
S000026636 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
|
94,549 | ||
| 40.2 |
Schwab Small-Cap Index Fund
Fund
S000005912 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
|
47,930 | ||
| 40.3 |
Schwab Small-Cap Equity Fund
Fund
S000005516 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
|
18,739 | ||
| 40.4 |
Schwab Health Care Fund
Fund
S000005519 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
|
11,939 | ||
| 40.5 |
Schwab Total Stock Market Index Fund
Fund
S000005913 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
|
11,800 | ||
| 41 |
Invesco Ltd.
13F
CIK 914208 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
202,056 | ||
| 41.1 |
Invesco Biotechnology & Genome ETF
Fund
S000003026 · Registered fund · Jul 31, 2026
Invesco Exchange-Traded Fund Trust, not summed
|
121,247 | ||
| 41.2 |
Invesco BuyBack AchieversTM ETF
Fund
S000013111 · Registered fund · Jul 31, 2026
Invesco Exchange-Traded Fund Trust, not summed
|
31,971 | ||
| 41.3 |
Invesco Dorsey Wright SmallCap Momentum ETF
Fund
S000037586 · Registered fund · May 31, 2026
Invesco Exchange-Traded Fund Trust II, not summed
|
21,153 | ||
| 41.4 |
Invesco RAFI US 1500 Small-Mid ETF
Fund
S000013120 · Registered fund · Jul 31, 2026
Invesco Exchange-Traded Fund Trust, not summed
|
20,920 | ||
| 41.5 |
Invesco Russell 2000 Dynamic Multifactor ETF
Fund
S000064608 · Registered fund · May 31, 2026
Invesco Exchange-Traded Self-Indexed Fund Trust, not summed
|
15,256 | ||
| 42 |
DIMENSIONAL FUND ADVISORS LP
13F
CIK 354204 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
185,444 | ||
| 42.1 |
U.S. SMALL CAP PORTFOLIO
Fund
S000000971 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
|
70,627 | ||
| 42.2 |
Dimensional U.S. Small Cap ETF
Fund
S000070906 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
|
64,608 | ||
| 42.3 |
U.S. MICRO CAP PORTFOLIO
Fund
S000000948 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
|
23,992 | ||
| 42.4 |
Dimensional U.S. Equity Market ETF
Fund
S000070902 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
|
6,052 | ||
| 43 |
Greenhaven Road Investment Management, L.P.
13F
CIK 1741129 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
171,059 | ||
| 44 |
VICTORY CAPITAL MANAGEMENT INC
13F
CIK 1040188 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
169,227 | ||
| 44.1 |
Victory Science & Technology Fund
Fund
S000012911 · Registered fund · Jul 31, 2026
Victory Portfolios III, not summed
|
187,893 | ||
| 44.2 |
VictoryShares US Small Mid Cap Value Momentum ETF
Fund
S000065161 · Registered fund · Jun 30, 2026
Victory Portfolios II, not summed
|
50,185 | ||
| 44.3 |
Victory RS Science & Technology Fund
Fund
S000053582 · Registered fund · Jun 30, 2026
Victory Portfolios, not summed
|
48,060 | ||
| 44.4 |
Victory RS Small Cap Growth Fund
Fund
S000053581 · Registered fund · Jun 30, 2026
Victory Portfolios, not summed
|
35,700 | ||
| 44.5 |
Victory Small Cap Stock Fund
Fund
S000012914 · Registered fund · Jul 31, 2026
Victory Portfolios III, not summed
|
31,643 | ||
| 45 |
MACKENZIE FINANCIAL CORP
13F
CIK 919859 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
150,979 | ||
| 46 |
Burney U.S. Equity Select ETF
Fund
S000094691 · Registered fund · Jul 31, 2026
EA Series Trust, not summed
|
148,943 | ||
| 47 |
|
146,832 | ||
| 48 |
VANGUARD FIDUCIARY TRUST CO
13F
CIK 933478 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
146,724 | ||
| 49 |
Connor, Clark & Lunn Investment Management Ltd.
13F
CIK 1596800 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
141,026 | ||
| 50 |
VANGUARD STRATEGIC EQUITY FUND
Fund
S000002593 · Registered fund · Jun 30, 2026
VANGUARD HORIZON FUNDS, not summed
|
131,265 |
34 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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