Latest Period
Q1 2026
Security Snapshot
ANAPTYSBIO, INC - Common Stock, par value $0.001 per share (ANAB) Institutional Ownership
CUSIP: 032724106
13F Institutional Holders and Ownership History from Q1 2017 to Q1 2026
Institutions Reporting
204
Shares (Excl. Options)
28,230,524
Price
$55.46
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- Security type / class
- Equity / Common Stock, par value $0.001 per share
- Symbol
- ANAB on Nasdaq
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 28,230,524
- Total 13F value
- $1,550,498,247
- Portfolio coverage rank
- 0%
- Share change
- -1,039,077
- Value change
- -$53,524,873
- Number of holders
- 204
- Shares outstanding
- 28,662,716
- SEC-reported price per share
- $69.78
- Insider filing price
- $69.78
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- ANAB - ANAPTYSBIO, INC - Common Stock, par value $0.001 per share is tracked under CUSIP 032724106.
- 204 institutions reported positions in Q1 2026.
- 8 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 178 to 204 between Q4 2025 and Q1 2026.
- SEC-reported value moved from $1,422,982,831 to $1,550,498,247.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 204 institutions filings for Q1 2026.
Security key
032724106
Latest holder period
Q1 2026
13F holders
204
13D/G owners
8
CIK / CUSIP context first
Open Q1 2026 holders
ANAB full holder history
ANAPTYSBIO, INC SEC filings
ANAPTYSBIO, INC company facts
ANAPTYSBIO, INC insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 032724106:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
8
Security
ANAB
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| Sirenia Capital Management LP | 6.7% | $108,944,405 | 1,920,402 | Sirenia Capital Management LP | 31 Mar 2026 | |||
| BlackRock, Inc. | 6.2% | -28% | $39,347,471 | -$13,405,817 | 1,900,844 | -25% | BlackRock, Inc. | 31 Mar 2025 |
| GOLDMAN SACHS GROUP INC | 4.5% | -14% | $38,314,646 | -$10,329,933 | 1,251,295 | -21% | THE GOLDMAN SACHS GROUP, INC. | 30 Sep 2025 |
| MORGAN STANLEY | 3.6% | -45% | $45,484,108 | -$37,928,432 | 1,006,063 | -45% | Morgan Stanley | 31 Dec 2025 |
| First Light Asset Management, LLC | 3.1% | -57% | $26,474,603 | -$42,907,347 | 864,618 | -62% | Mathew P. Arens | 30 Sep 2025 |
| MILLENNIUM MANAGEMENT LLC | 2.9% | -44% | $39,442,003 | -$29,733,912 | 813,571 | -43% | Millennium Management LLC | 31 Dec 2025 |
| FMR LLC | 0.9% | -88% | $5,091,861 | -$33,068,368 | 254,212 | -87% | FMR LLC | 30 May 2025 |
| Point72 Asset Management, L.P. | 0.2% | -94% | $3,137,339 | -$131,220,291 | 55,303 | -98% | Point72 Asset Management, L.P. | 31 Mar 2026 |
As of 31 Mar 2026, 204 institutional investors reported holding 28,230,524 shares of ANAPTYSBIO, INC - Common Stock, par value $0.001 per share (ANAB). This represents 98% of the company’s total 28,662,716 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
81%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| EcoR1 Capital, LLC | 27% | 7,880,094 | 0% | 19% | $437,030,013 |
| BlackRock, Inc. | 5.9% | 1,681,380 | -3.1% | 0% | $93,249,334 |
| TANG CAPITAL MANAGEMENT LLC | 4.6% | 1,330,879 | -0.09% | 3.7% | $73,810,549 |
| MORGAN STANLEY | 3.5% | 993,905 | -3.9% | 0% | $55,121,984 |
| STATE STREET CORP | 3.5% | 992,445 | -5.8% | 0% | $55,041,000 |
| Affinity Asset Advisors, LLC | 3.3% | 940,000 | +111% | 3.1% | $52,132,400 |
| VANGUARD CAPITAL MANAGEMENT LLC | 3% | 853,151 | 0% | 0% | $47,315,754 |
| Sanofi | 2.9% | 821,917 | 0% | 9% | $30,384,545 |
| Palo Alto Investors LP | 2.2% | 638,161 | -7.5% | 5.4% | $35,392,409 |
| 683 Capital Management, LLC | 2.2% | 625,000 | -3.6% | 3.2% | $34,662,500 |
| D. E. Shaw & Co., Inc. | 2% | 579,296 | -14% | 0.03% | $32,127,756 |
| First Light Asset Management, LLC | 2% | 565,431 | -13% | 2.8% | $31,358,803 |
| GEODE CAPITAL MANAGEMENT, LLC | 1.8% | 520,241 | +11% | 0% | $28,858,610 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 1.8% | 519,870 | 0% | 0% | $28,831,990 |
| BANK OF AMERICA CORP /DE/ | 1.7% | 501,086 | +283% | 0% | $27,790,230 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 1.7% | 492,120 | -12% | 0.01% | $27,292,975 |
| MILLENNIUM MANAGEMENT LLC | 1.7% | 475,572 | -42% | 0.02% | $26,375,223 |
| FMR LLC | 1.6% | 472,704 | +1644% | 0% | $26,216,167 |
| TWO SIGMA INVESTMENTS, LP | 1.6% | 465,083 | +81% | 0.02% | $25,793,503 |
| FEDERATED HERMES, INC. | 1.3% | 364,121 | +22% | 0.03% | $20,194,150 |
| Woodline Partners LP | 1.2% | 344,256 | -31% | 0.07% | $19,092,438 |
| GOLDMAN SACHS GROUP INC | 1.2% | 332,743 | -17% | 0% | $18,453,926 |
| Synergy Asset Management, LLC | 1.1% | 317,106 | 1.9% | $17,586,699 | |
| Nuveen, LLC | 1.1% | 316,065 | -0.2% | 0% | $17,528,965 |
| Squarepoint Ops LLC | 0.93% | 267,703 | +67% | 0.03% | $14,846,808 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
37
Latest
Q1 2026
Rows shown
1-25 of 37
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 28,230,524 | $1,550,498,247 | -$53,524,873 | $55.46 | 204 |
| 2025 Q4 | 29,355,874 | $1,422,982,831 | -$87,271,462 | $48.48 | 178 |
| 2025 Q3 | 31,623,561 | $968,590,879 | -$154,422,366 | $30.62 | 164 |
| 2025 Q2 | 36,775,405 | $816,417,703 | -$61,528,593 | $22.20 | 146 |
| 2025 Q1 | 39,955,702 | $742,780,741 | +$106,646,664 | $18.59 | 150 |
| 2024 Q4 | 35,417,634 | $468,934,603 | -$87,874,690 | $13.24 | 133 |
| 2024 Q3 | 33,628,905 | $1,126,906,586 | +$123,178,333 | $33.50 | 158 |
| 2024 Q2 | 29,795,998 | $746,647,480 | +$18,365,650 | $25.06 | 133 |
| 2024 Q1 | 29,220,936 | $658,049,704 | -$20,954,780 | $22.52 | 132 |
| 2023 Q4 | 30,178,929 | $646,434,520 | +$661,774 | $21.42 | 117 |
| 2023 Q3 | 30,319,401 | $544,539,672 | -$1,742,551 | $17.96 | 116 |
| 2023 Q2 | 30,230,678 | $614,916,059 | -$16,322,967 | $20.34 | 116 |
| 2023 Q1 | 31,038,362 | $675,357,489 | -$44,703,594 | $21.76 | 112 |
| 2022 Q4 | 32,881,839 | $1,018,995,107 | -$10,549,644 | $30.99 | 114 |
| 2022 Q3 | 32,565,742 | $830,751,663 | +$39,360,338 | $25.51 | 109 |
| 2022 Q2 | 31,163,975 | $632,623,400 | +$28,483,649 | $20.30 | 117 |
| 2022 Q1 | 29,681,010 | $735,000,699 | +$13,953,506 | $24.74 | 124 |
| 2021 Q4 | 27,753,009 | $964,436,533 | +$8,862,117 | $34.75 | 132 |
| 2021 Q3 | 27,612,274 | $748,805,223 | -$4,361,131 | $27.12 | 123 |
| 2021 Q2 | 27,792,119 | $720,641,941 | -$34,119,008 | $25.93 | 117 |
| 2021 Q1 | 29,170,513 | $628,617,724 | +$26,204,184 | $21.55 | 116 |
| 2020 Q4 | 27,945,751 | $600,836,464 | -$16,682,226 | $21.50 | 129 |
| 2020 Q3 | 29,118,815 | $429,506,449 | -$16,534,668 | $14.75 | 127 |
| 2020 Q2 | 29,995,726 | $670,116,259 | -$17,219,808 | $22.34 | 117 |
| 2020 Q1 | 31,226,700 | $441,231,854 | +$44,124,506 | $14.13 | 112 |