LifeStance 건강 그룹, Inc.
US ˙ NasdaqGS ˙ US53228F1012

SecurityLFST / LifeStance Health Group, Inc.
InstitutionMarshall Wace, Llp
Latest Disclosed Ownership237,927 shares
Latest Disclosed Value $ 1,515,595
Marshall Wace, Llp reports 29.76% decrease in ownership of LFST / LifeStance Health Group, Inc.

On May 14, 2026 - Marshall Wace, Llp filed a 13F-HR form disclosing ownership of 237,927 shares of LifeStance Health Group, Inc. (US:LFST) valued at $1,515,595 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 338,758 shares of LifeStance Health Group, Inc.. This represents a change in shares of -29.76% during the quarter. The current value of the position is $1,763,039 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)
2026-05-14 2026-03-31 13F LIFESTANCE HEALT COMMON STOCK 53228F101 237,927 -100,831 -29.76 1,516 -36.45 0.0015
2026-02-13 2025-12-31 13F LIFESTANCE HEALT COMMON STOCK 53228F101 338,758 -1,049,866 -75.60 2,385 -68.78 0.0022
2025-11-13 2025-09-30 13F LIFESTANCE HEALT COMMON STOCK 53228F101 1,388,624 1,388,624 7,637 0.0077
2025-08-13 2025-06-30 13F LIFESTANCE HEALT COMMON STOCK 53228F101 0 -887,192 -100.00 0 -100.00
2025-05-15 2025-03-31 13F LIFESTANCE HEALT COMMON STOCK 53228F101 887,192 531,268 149.26 5,909 125.24 0.0075
2025-02-13 2024-12-31 13F LIFESTANCE HEALT COMMON STOCK 53228F101 355,924 355,924 2,623 0.0032
2024-08-14 2024-06-30 13F LIFESTANCE HEALT COMMON STOCK 53228F101 0 -122,243 -100.00 0 -100.00
2024-05-15 2024-03-31 13F LIFESTANCE HEALT COMMON STOCK 53228F101 122,243 122,243 754 0.0011
2024-02-14 2023-12-31 13F LIFESTANCE HEALT COMMON STOCK 53228F101 0 -73,766 -100.00 0 -100.00
2023-11-14 2023-09-30 13F LIFESTANCE HEALT COMMON STOCK 53228F101 73,766 73,766 507 0.0010
2023-08-14 2023-06-30 13F LIFESTANCE HEALT COMMON STOCK 53228F101 0 -295,108 -100.00 0 -100.00
2023-05-15 2023-03-31 13F LIFESTANCE HEALT COMMON STOCK 53228F101 295,108 295,108 2,193 0.0047
2023-02-14 2022-12-31 13F LIFESTANCE HEALT COMMON STOCK 53228F101 0 -17,231 -100.00 0 -100.00
2022-11-14 2022-09-30 13F LIFESTANCE HEALT COMMON STOCK 53228F101 17,231 17,231 114 0.0002
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.