LifeStance Health Group, Inc.
US ˙ NasdaqGS ˙ US53228F1012

SecurityLFST / LifeStance Health Group, Inc.
InstitutionRenaissance Technologies Llc
ManagerJames Simons
Latest Disclosed Ownership800,500 shares
Latest Disclosed Value $ 5,099,185
Renaissance Technologies Llc reports 92.47% increase in ownership of LFST / LifeStance Health Group, Inc.

On May 14, 2026 - Renaissance Technologies Llc filed a 13F-HR form disclosing ownership of 800,500 shares of LifeStance Health Group, Inc. (US:LFST) valued at $5,099,185 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 415,900 shares of LifeStance Health Group, Inc.. This represents a change in shares of 92.47% during the quarter. The current value of the position is $5,931,705 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 HEALTH GROUP COM 53228F101 800,500 384,600 92.47 5,099 74.21 0.0080
2026-02-12 2025-12-31 13F LIFESTANCE HEALTH GROUP COM 53228F101 415,900 -61,300 -12.85 2,928 11.55 0.0045
2025-11-13 2025-09-30 13F LIFESTANCE HEALTH GROUP COM 53228F101 477,200 -874,900 -64.71 2,625 -62.46 0.0035
2025-08-13 2025-06-30 13F LIFESTANCE HEALTH GROUP COM 53228F101 1,352,100 189,000 16.25 6,990 -9.76 0.0093
2025-05-14 2025-03-31 13F LIFESTANCE HEALTH GROUP COM 53228F101 1,163,100 550,300 89.80 7,746 71.52 0.0117
2025-02-13 2024-12-31 13F LIFESTANCE HEALTH GROUP COM 53228F101 612,800 495,300 421.53 4,516 449.39 0.0067
2024-11-13 2024-09-30 13F LIFESTANCE HEALTH GROUP COM 53228F101 117,500 -37,500 -24.19 822 8.02 0.0012
2024-08-09 2024-06-30 13F LIFESTANCE HEALTH GROUP COM 53228F101 155,000 -105,700 -40.54 761 76,000.00 0.0013
2024-05-13 2024-03-31 13F LIFESTANCE HEALTH GROUP COM 53228F101 260,700 260,700 2 0.0025
2024-02-13 2023-12-31 13F LIFESTANCE HEALTH GROUP COM 53228F101 0 -152,000 -100.00 0 -100.00
2023-11-14 2023-09-30 13F LIFESTANCE HEALTH GROUP COM 53228F101 152,000 100,178 193.31 1 0.0018
2023-08-11 2023-06-30 13F LIFESTANCE HEALTH GROUP COM 53228F101 51,822 51,822 0 0.0007
2023-05-12 2023-03-31 13F LIFESTANCE HEALTH GROUP COM 53228F101 0 -30,814 -100.00 0 0.0000
2023-02-13 2022-12-31 13F LIFESTANCE HEALTH GROUP COM 53228F101 30,814 30,814 0 0.0002
2022-11-14 2022-09-30 13F LIFESTANCE HEALTH GROUP COM 53228F101 0 -245,100 -100.00 0 -100.00
2022-08-12 2022-06-30 13F LIFESTANCE HEALTH GROUP COM 53228F101 245,100 245,100 1,363 0.0016
2022-05-13 2022-03-31 13F LIFESTANCE HEALTH GROUP COM 53228F101 0 -124,100 -100.00 0 -100.00
2022-02-11 2021-12-31 13F LIFESTANCE HEALTH GROUP COM 53228F101 124,100 124,100 1,181 0.0015
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.