Pacific Biosciences of California, Inc.
MX ˙ BMV ˙ US69404D1081
SecurityMX:PACB / Pacific Biosciences of California, Inc.
InstitutionAqr Capital Management Llc
ManagerCliff Asness
Latest Disclosed Ownership759,492 shares
Latest Disclosed Value $ 1,002,530
Aqr Capital Management Llc reports 773.34% increase in ownership of PACB / Pacific Biosciences of California, Inc.

On May 15, 2026 - Aqr Capital Management Llc filed a 13F-HR form disclosing ownership of 759,492 shares of Pacific Biosciences of California, Inc. (MX:PACB) valued at $1,002,530 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 86,964 shares of Pacific Biosciences of California, Inc.. This represents a change in shares of 773.34% 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 PACIFIC BIOSCIENCES CALIF IN COM 69404D108 759,492 672,528 773.34 1,003 518.52 0.0001
2026-02-17 2025-12-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 86,964 35,629 69.40 163 149.23 0.0001
2025-11-14 2025-09-30 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 51,335 34,346 202.17 66 209.52 0.0000
2025-08-14 2025-06-30 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 16,989 6,067 55.55 21 75.00 0.0000
2025-05-15 2025-03-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 10,922 10,922 13 0.0000
2024-08-14 2024-06-30 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 0 -108,364 -100.00 0 -100.00
2024-05-15 2024-03-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 108,364 36,274 50.32 406 -42.57 0.0007
2024-02-14 2023-12-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 72,090 33,837 88.46 707 121.63 0.0013
2023-11-14 2023-09-30 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 38,253 4,510 13.37 319 -28.79 0.0007
2023-08-14 2023-06-30 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 33,743 17,519 107.98 449 139.57 0.0010
2023-05-15 2023-03-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 16,224 16,224 188 0.0004
2022-05-16 2022-03-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 0 -62,416 -100.00 0 -100.00
2022-02-14 2021-12-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 62,416 -75,003 -54.58 1,277 -63.63 0.0023
2021-11-15 2021-09-30 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 137,419 13,061 10.50 3,511 -19.27 0.0065
2021-08-16 2021-06-30 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 124,358 -35,423 -22.17 4,349 -18.28 0.0075
2021-05-17 2021-03-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 159,781 -26,258 -14.11 5,322 10.28 0.0087
2021-02-16 2020-12-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 186,039 63,370 51.66 4,826 298.51 0.0086
2020-11-16 2020-09-30 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 122,669 -31,445 -20.40 1,211 127.63 0.0020
2020-08-17 2020-06-30 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 154,114 154,114 25.63 532 -56.07 0.0009
2017-05-15 2017-03-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 0 -50,029 -100.00 0 -100.00
2017-02-14 2016-12-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 50,029 -73,760 -59.59 190 -82.87 0.0003
2016-11-14 2016-09-30 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 123,789 -72,391 -36.90 1,109 -19.64 0.0017
2016-08-15 2016-06-30 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 196,180 45,444 30.15 1,380 7.73 0.0024
2016-07-29 2016-03-31 13F/A-1 PACIFIC BIOSCIENCES CALIF IN COM 69404D108 150,736 150,736 -23.16 1,281 -7.17 0.0023
2016-05-16 2016-03-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 158,266 1,345
2016-02-16 2015-12-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 0 -51,323 -100.00 0 -100.00
2015-11-16 2015-09-30 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 51,323 -20,949 -28.99 188 -54.81 0.0004
2015-08-14 2015-06-30 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 72,272 -37,382 -34.09 416 -35.10 0.0008
2015-05-15 2015-03-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 109,654 -36,500 -24.97 641 -44.07 0.0015
2015-04-22 2014-12-31 13F/A-1 PACIFIC BIOSCIENCES CALIF IN COM 69404D108 146,154 -5,840 -3.84 1,146 53.62 0.0024
2015-02-17 2014-12-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 146,154 1,146
2014-11-14 2014-09-30 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 151,994 59,200 63.80 746 30.19 0.0021
2014-08-14 2014-06-30 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 92,794 0 0.00 573 15.52 0.0015
2014-05-15 2014-03-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 92,794 1,300 1.42 496 3.55 0.0015
2014-02-14 2013-12-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 91,494 78,594 609.26 479 574.65 0.0014
2013-11-14 2013-09-30 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 12,900 12,900 71 0.0003
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.