AnaptysBio, Inc.
MX ˙ BMV ˙ US0327241065
SecurityMX:ANAB / AnaptysBio, Inc.
InstitutionJacobs Levy Equity Management, Inc
Latest Disclosed Ownership28,625 shares
Latest Disclosed Value $ 1,587,542
Jacobs Levy Equity Management, Inc reports 48.04% decrease in ownership of ANAB / AnaptysBio, Inc.

On May 15, 2026 - Jacobs Levy Equity Management, Inc filed a 13F-HR form disclosing ownership of 28,625 shares of AnaptysBio, Inc. (MX:ANAB) valued at $1,587,542 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 55,088 shares of AnaptysBio, Inc.. This represents a change in shares of -48.04% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F ANAPTYSBIO COM 032724106 28,625 -26,463 -48.04 1,588 -40.56 0.0067
2026-02-13 2025-12-31 13F ANAPTYSBIO COM 032724106 55,088 -323,364 -85.44 2,671 -76.96 0.0103
2025-11-17 2025-09-30 13F ANAPTYSBIO COM 032724106 378,452 10,005 2.72 11,588 41.68 0.0460
2025-08-14 2025-06-30 13F ANAPTYSBIO COM 032724106 368,447 351,960 2,134.77 8,180 2,572.88 0.0321
2025-05-15 2025-03-31 13F ANAPTYSBIO COM 032724106 16,487 -68,894 -80.69 306 -72.92 0.0012
2025-02-14 2024-12-31 13F ANAPTYSBIO COM 032724106 85,381 39,307 85.31 1,130 -26.77 0.0040
2024-11-14 2024-09-30 13F ANAPTYSBIO COM 032724106 46,074 -1,129 -2.39 1,543 30.54 0.0060
2024-08-14 2024-06-30 13F ANAPTYSBIO COM 032724106 47,203 -2,186 -4.43 1,183 6.29 0.0049
2024-05-15 2024-03-31 13F ANAPTYSBIO COM 032724106 49,389 13,764 38.64 1,112 45.74 0.0050
2024-02-14 2023-12-31 13F ANAPTYSBIO COM 032724106 35,625 -171,160 -82.77 763 -79.45 0.0038
2023-11-17 2023-09-30 13F ANAPTYSBIO COM 032724106 206,785 8,064 4.06 3,714 -8.12 0.0220
2023-08-14 2023-06-30 13F ANAPTYSBIO COM 032724106 198,721 39,214 24.58 4,042 16.46 0.0233
2023-05-15 2023-03-31 13F ANAPTYSBIO COM 032724106 159,507 159,507 3,471 0.0213
2022-11-15 2022-09-30 13F ANAPTYSBIO COM 032724106 0 -15,196 -100.00 0 -100.00
2022-08-15 2022-06-30 13F ANAPTYSBIO COM 032724106 15,196 -96,211 -86.36 308 -88.82 0.0024
2022-05-16 2022-03-31 13F ANAPTYSBIO COM 032724106 111,407 22,090 24.73 2,756 -11.21 0.0185
2022-02-14 2021-12-31 13F ANAPTYSBIO COM 032724106 89,317 889 1.01 3,104 29.44 0.0208
2021-11-15 2021-09-30 13F ANAPTYSBIO COM 032724106 88,428 -738 -0.83 2,398 3.72 0.0161
2021-08-16 2021-06-30 13F ANAPTYSBIO COM 032724106 89,166 -5,039 -5.35 2,312 13.89 0.0157
2021-05-17 2021-03-31 13F ANAPTYSBIO COM 032724106 94,205 22,827 31.98 2,030 32.25 0.0157
2021-02-16 2020-12-31 13F ANAPTYSBIO COM 032724106 71,378 527 0.74 1,535 46.89 0.0135
2020-11-16 2020-09-30 13F ANAPTYSBIO COM 032724106 70,851 7,260 11.42 1,045 -26.46 0.0108
2020-08-17 2020-06-30 13F ANAPTYSBIO COM 032724106 63,591 29,006 83.87 1,421 190.59 0.0154
2020-05-15 2020-03-31 13F ANAPTYSBIO COM 032724106 34,585 34,585 489 0.0063
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.