Pacific Biosciences of California, Inc.
US ˙ NasdaqGS ˙ US69404D1081

SecurityPACB / Pacific Biosciences of California, Inc.
InstitutionWealthfront Advisers Llc
Latest Disclosed Ownership39,446 shares
Latest Disclosed Value $ 52,069
Wealthfront Advisers Llc reports 3.69% increase in ownership of PACB / Pacific Biosciences of California, Inc.

On May 5, 2026 - Wealthfront Advisers Llc filed a 13F-HR form disclosing ownership of 39,446 shares of Pacific Biosciences of California, Inc. (US:PACB) valued at $52,069 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 30, 2026 disclosing 38,041 shares of Pacific Biosciences of California, Inc.. This represents a change in shares of 3.69% during the quarter. The current value of the position is $64,297 USD.

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)
2026-05-05 2026-03-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 39,446 1,405 3.69 52 -26.76 0.0001
2026-01-30 2025-12-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 38,041 -52,164 -57.83 71 -38.26 0.0002
2025-11-06 2025-09-30 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 90,205 387 0.43 115 3.60 0.0003
2025-07-31 2025-06-30 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 89,818 242 0.27 111 5.71 0.0003
2025-05-02 2025-03-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 89,576 51,825 137.28 106 52.17 0.0003
2025-04-01 2024-12-31 13F/A-1 PACIFIC BIOSCIENCES CALIF IN COM 69404D108 37,751 -3,805 -9.16 69 -1.43 0.0002
2025-02-07 2024-12-31 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 62,648 21,092 1,678 0.0051
2024-11-12 2024-09-30 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 41,556 13,836 49.91 71 89.19 0.0002
2024-08-14 2024-06-30 13F PACIFIC BIOSCIENCES CALIF IN COM 69404D108 27,720 27,720 38 0.0001
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.