Guardant Health, Inc.
US ˙ NasdaqGS ˙ US40131M1099

SecurityGH / Guardant Health, Inc.
InstitutionDimensional Fund Advisors Lp
Latest Disclosed Ownership182,727 shares
Latest Disclosed Value $ 16,856,652
Dimensional Fund Advisors Lp reports 40.39% decrease in ownership of GH / Guardant Health, Inc.

On May 7, 2026 - Dimensional Fund Advisors Lp filed a 13F-HR form disclosing ownership of 182,727 shares of Guardant Health, Inc. (US:GH) valued at $16,878,493 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 306,553 shares of Guardant Health, Inc.. This represents a change in shares of -40.39% during the quarter. The current value of the position is $23,211,811 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)
2026-05-07 2026-03-31 13F GUARDANT HEALTH COM 40131M109 182,727 -123,826 -40.39 16,857 -46.15 0.0008
2026-02-12 2025-12-31 13F GUARDANT HEALTH COM 40131M109 306,553 241,539 371.52 31,301 670.58 0.0066
2025-11-12 2025-09-30 13F GUARDANT HEALTH COM 40131M109 65,014 33,241 104.62 4,062 145.74 0.0009
2025-08-12 2025-06-30 13F GUARDANT HEALTH COM 40131M109 31,773 4,659 17.18 1,653 43.12 0.0004
2025-05-13 2025-03-31 13F GUARDANT HEALTH COM 40131M109 27,114 27,114 1,155 0.0003
2023-05-12 2023-03-31 13F GUARDANT HEALTH COM 40131M109 0 -46,236 -100.00 0 -100.00
2023-02-09 2022-12-31 13F GUARDANT HEALTH COM 40131M109 46,236 2,097 4.75 1 -99.96 0.0004
2022-11-10 2022-09-30 13F GUARDANT HEALTH COM 40131M109 44,139 -29,874 -40.36 2,376 -20.46 0.0009
2022-08-12 2022-06-30 13F GUARDANT HEALTH COM 40131M109 74,013 -116,288 -61.11 2,987 -76.31 0.0011
2022-05-13 2022-03-31 13F GUARDANT HEALTH COM 40131M109 190,301 -25,673 -11.89 12,607 -41.64 0.0039
2022-02-09 2021-12-31 13F GUARDANT HEALTH COM 40131M109 215,974 9,292 4.50 21,602 -16.38 0.0065
2021-11-12 2021-09-30 13F GUARDANT HEALTH COM 40131M109 206,682 5,672 2.82 25,833 3.46 0.0083
2021-08-12 2021-06-30 13F GUARDANT HEALTH COM 40131M109 201,010 -809 -0.40 24,969 -19.06 0.0079
2021-05-14 2021-03-31 13F GUARDANT HEALTH COM 40131M109 201,819 4,420 2.24 30,847 21.28 0.0102
2021-03-08 2020-12-31 13F/A-2 GUARDANT HEALTH COM 40131M109 197,399 11,019 5.91 25,435 22.10 0.0092
2021-02-11 2020-12-31 13F GUARDANT HEALTH COM 40131M109 197,399 11,019 25,435 9,185.7701
2020-11-12 2020-09-30 13F GUARDANT HEALTH COM 40131M109 186,380 15,419 9.02 20,831 50.21 0.0088
2020-08-13 2020-06-30 13F GUARDANT HEALTH COM 40131M109 170,961 31,651 22.72 13,868 42.98 0.0061
2020-05-14 2020-03-31 13F GUARDANT HEALTH COM 40131M109 139,310 12,504 9.86 9,699 -2.11 0.0051
2020-02-14 2019-12-31 13F GUARDANT HEALTH COM 40131M109 126,806 15,115 13.53 9,908 39.02 0.0036
2019-11-12 2019-09-30 13F GUARDANT HEALTH COM 40131M109 111,691 53,942 93.41 7,127 42.97 0.0028
2019-08-13 2019-06-30 13F GUARDANT HEALTH COM 40131M109 57,749 57,749 4,985 0.0019
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.