Planet Fitness, Inc.
MX ˙ BMV ˙ US72703H1014
SecurityMX:PLNT / Planet Fitness, Inc.
InstitutionMarshall Wace, Llp
Latest Disclosed Ownership40,406 shares
Latest Disclosed Value $ 3,005,398
Marshall Wace, Llp reports 662.38% increase in ownership of PLNT / Planet Fitness, Inc.

On May 14, 2026 - Marshall Wace, Llp filed a 13F-HR form disclosing ownership of 40,406 shares of Planet Fitness, Inc. (MX:PLNT) valued at $3,005,398 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 5,300 shares of Planet Fitness, Inc.. This represents a change in shares of 662.38% 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)
2026-05-14 2026-03-31 13F PLANET FITNESS-A COMMON STOCK 72703H101 40,406 35,106 662.38 3,005 423.52 0.0030
2026-02-13 2025-12-31 13F PLANET FITNESS-A COMMON STOCK 72703H101 5,300 -6,800 -56.20 575 -54.26 0.0005
2025-11-13 2025-09-30 13F PLANET FITNESS-A COMMON STOCK 72703H101 12,100 -273,185 -95.76 1,256 -95.97 0.0013
2025-08-13 2025-06-30 13F PLANET FITNESS-A COMMON STOCK 72703H101 285,285 285,285 31,110 0.0350
2024-05-15 2024-03-31 13F PLANET FITNESS-A COMMON STOCK 72703H101 0 -8,063 -100.00 0 -100.00
2024-05-15 2024-03-31 13F PLANET FITNESS-A COMMON STOCK 72703H101 0 0
2024-02-14 2023-12-31 13F PLANET FITNESS-A COMMON STOCK 72703H101 8,063 -159,877 -95.20 589 -92.88 0.0010
2023-11-14 2023-09-30 13F PLANET FITNESS-A COMMON STOCK 72703H101 167,940 81,754 94.86 8,259 42.10 0.0167
2023-08-14 2023-06-30 13F PLANET FITNESS-A COMMON STOCK 72703H101 86,186 86,186 5,812 0.0114
2023-05-15 2023-03-31 13F PLANET FITNESS-A COMMON STOCK 72703H101 0 -26,833 -100.00 0 -100.00
2023-02-14 2022-12-31 13F PLANET FITNESS-A COMMON STOCK 72703H101 26,833 -21,497 -44.48 2,114 -24.15 0.0048
2022-11-14 2022-09-30 13F PLANET FITNESS-A COMMON STOCK 72703H101 48,330 48,330 2,787 0.0061
2022-05-16 2022-03-31 13F PLANET FITNESS-A COMMON STOCK 72703H101 0 -4,638 -100.00 0 -100.00
2022-02-14 2021-12-31 13F PLANET FITNESS-A COMMON STOCK 72703H101 4,638 -2,398 -34.08 421 -23.87 0.0008
2021-11-15 2021-09-30 13F PLANET FITNESS-A COMMON STOCK 72703H101 7,036 7,036 553 0.0023
2021-08-13 2021-06-30 13F PLANET FITNESS-A COMMON STOCK 72703H101 0 -75,663 -100.00 0 -100.00
2021-05-17 2021-03-31 13F PLANET FITNESS-A COMMON STOCK 72703H101 75,663 -138,590 -64.69 5,849 -64.83 0.0268
2021-02-16 2020-12-31 13F PLANET FITNESS-A COMMON STOCK 72703H101 214,253 214,253 183.17 16,633 184.37 0.0901
2020-05-15 2020-03-31 13F PLANET FITNESS-A COMMON STOCK 72703H101 0 -370,254 -100.00 0 -100.00
2020-02-14 2019-12-31 13F PLANET FITNESS-A COMMON STOCK 72703H101 370,254 158,963 75.23 27,651 126.15 0.1900
2019-11-14 2019-09-30 13F PLANET FITNESS-A COMMON STOCK 72703H101 211,291 84,181 66.23 12,227 32.80 0.0961
2019-08-14 2019-06-30 13F PLANET FITNESS-A COMMON STOCK 72703H101 127,110 127,110 -39.84 9,207 -24.70 0.0758
2019-05-14 2019-03-31 13F PLANET FITNESS-A COMMON STOCK 72703H101 0 -80,161 -100.00 0 -100.00
2019-02-14 2018-12-31 13F PLANET FITNESS-A COMMON STOCK 72703H101 80,161 -942,204 -92.16 4,298 -92.22 0.0439
2018-12-06 2018-09-30 13F/A-1 PLANET FITNESS-A COMMON STOCK 72703H101 1,022,365 1,022,365 1,175.39 55,238 1,185.20 0.4699
2018-11-14 2018-09-30 13F PLANET FITNESS-A COMMON STOCK 72703H101 1,022,365 1,022,365 55,238
2018-05-15 2018-03-31 13F PLANET FITNESS-A COMMON STOCK 72703H101 0 -8,356 -100.00 0 -100.00
2018-03-29 2017-12-31 13F/A-1 PLANET FITNESS-A COMMON STOCK 72703H101 8,356 -13,785 -62.26 289 -51.67 0.0121
2018-02-14 2017-12-31 13F PLANET FITNESS-A COMMON STOCK 72703H101 8,356 -13,785 289
2017-11-13 2017-09-30 13F PLANET FITNESS-A COMMON STOCK 72703H101 22,141 -7,447 -25.17 598 -12.19 0.0278
2017-08-04 2017-06-30 13F PLANET FITNESS-A COMMON STOCK 72703H101 29,588 29,588 33.63 681 13.88 0.0300
2017-05-12 2017-03-31 13F PLANET FITNESS-A COMMON STOCK 72703H101 0 -599,329 -100.00 0 -100.00
2017-02-10 2016-12-31 13F PLANET FITNESS-A COMMON STOCK 72703H101 599,329 -607,413 -50.33 12,047 -50.26 0.0792
2016-11-10 2016-09-30 13F PLANET FITNESS-A COMMON STOCK 72703H101 1,206,742 814,205 207.42 24,220 226.81 0.1722
2016-08-12 2016-06-30 13F PLANET FITNESS-A COMMON STOCK 72703H101 392,537 392,537 7,411 0.0623
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.