Planet Fitness, Inc.
MX ˙ BMV ˙ US72703H1014
SecurityMX:PLNT / Planet Fitness, Inc.
InstitutionRhumbline Advisers
Latest Disclosed Ownership231,611 shares
Latest Disclosed Value $ 17,227,161
Rhumbline Advisers reports 2.05% increase in ownership of PLNT / Planet Fitness, Inc.

On May 12, 2026 - Rhumbline Advisers filed a 13F-HR form disclosing ownership of 231,611 shares of Planet Fitness, Inc. (MX:PLNT) valued at $17,227,161 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 226,957 shares of Planet Fitness, Inc.. This represents a change in shares of 2.05% 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)
2026-05-12 2026-03-31 13F PLANET FITNESS INC CL A COM 72703H101 231,611 4,654 2.05 17,227 -30.02 0.0147
2026-02-13 2025-12-31 13F PLANET FITNESS INC CL A COM 72703H101 226,957 -8,185 -3.48 24,618 0.86 0.0199
2025-11-06 2025-09-30 13F PLANET FITNESS INC CL A COM 72703H101 235,142 -5,255 -2.19 24,408 -6.90 0.0196
2025-08-12 2025-06-30 13F PLANET FITNESS INC CL A COM 72703H101 240,397 6,549 2.80 26,215 16.04 0.0224
2025-05-29 2025-03-31 13F/A-1 PLANET FITNESS INC CL A COM 72703H101 233,848 -2,115 -0.90 22,592 -3.16 0.0211
2025-04-08 2025-03-31 13F PLANET FITNESS INC CL A COM 72703H101 233,848 -2,115 22,592 0.0211
2025-05-29 2024-12-31 13F/A-1 PLANET FITNESS INC CL A COM 72703H101 235,963 -1,603 -0.67 23,330 20.91 0.0209
2025-01-30 2024-12-31 13F PLANET FITNESS INC CL A COM 72703H101 235,963 -1,603 23,330 0.0209
2024-11-12 2024-09-30 13F PLANET FITNESS INC CL A COM 72703H101 237,566 -5,957 -2.45 19,295 7.67 0.0174
2024-08-01 2024-06-30 13F PLANET FITNESS INC CL A COM 72703H101 243,523 4,768 2.00 17,921 19.84 0.0168
2024-05-09 2024-03-31 13F PLANET FITNESS INC CL A COM 72703H101 238,755 -9,019 -3.64 14,953 -17.33 0.0144
2024-02-08 2023-12-31 13F PLANET FITNESS INC CL A COM 72703H101 247,774 -8,851 -3.45 18,088 43.32 0.0190
2023-11-09 2023-09-30 13F PLANET FITNESS INC CL A COM 72703H101 256,625 -7,569 -2.86 12,621 -29.17 0.0146
2023-08-08 2023-06-30 13F PLANET FITNESS INC CL A COM 72703H101 264,194 165,512 167.72 17,817 254,428.57 0.0200
2023-05-11 2023-03-31 13F PLANET FITNESS INC CL A COM 72703H101 98,682 5,224 5.59 8 -99.90 0.0095
2023-02-14 2022-12-31 13F PLANET FITNESS INC CL A COM 72703H101 93,458 4,504 5.06 7,364 43.58 0.0099
2022-11-10 2022-09-30 13F PLANET FITNESS INC CL A COM 72703H101 88,954 4,207 4.96 5,129 -11.02 0.0076
2022-08-11 2022-06-30 13F PLANET FITNESS INC CL A COM 72703H101 84,747 10,287 13.82 5,764 -8.36 0.0084
2022-05-12 2022-03-31 13F PLANET FITNESS INC CL A COM 72703H101 74,460 -6,001 -7.46 6,290 -13.69 0.0081
2022-02-10 2021-12-31 13F PLANET FITNESS INC CL A COM 72703H101 80,461 2,079 2.65 7,288 18.37 0.0089
2021-11-12 2021-09-30 13F PLANET FITNESS INC CL A COM 72703H101 78,382 -2,385 -2.95 6,157 1.30 0.0083
2021-08-05 2021-06-30 13F PLANET FITNESS INC CL A COM 72703H101 80,767 -3,846 -4.55 6,078 -7.08 0.0080
2021-05-06 2021-03-31 13F PLANET FITNESS INC CL A COM 72703H101 84,613 -3,330 -3.79 6,541 -4.19 0.0089
2021-02-10 2020-12-31 13F PLANET FITNESS INC CL A COM 72703H101 87,943 860 0.99 6,827 27.23 0.0094
2020-11-12 2020-09-30 13F PLANET FITNESS INC CL A COM 72703H101 87,083 -2,751 -3.06 5,366 -1.38 0.0084
2020-08-13 2020-06-30 13F PLANET FITNESS INC CL A COM 72703H101 89,834 8,198 10.04 5,441 36.85 0.0091
2020-05-06 2020-03-31 13F PLANET FITNESS INC CL A COM 72703H101 81,636 -1,509 -1.81 3,976 -35.96 0.0083
2020-02-05 2019-12-31 13F PLANET FITNESS INC CL A COM 72703H101 83,145 759 0.92 6,209 30.22 0.0104
2019-10-23 2019-09-30 13F PLANET FITNESS INC CL A COM 72703H101 82,386 -307 -0.37 4,768 -20.40 0.0087
2019-08-14 2019-06-30 13F PLANET FITNESS INC CL A COM 72703H101 82,693 -33,882 -29.06 5,990 -25.23 0.0112
2019-05-01 2019-03-31 13F PLANET FITNESS INC CL A COM 72703H101 116,575 -610 -0.52 8,011 27.50 0.0155
2019-01-31 2018-12-31 13F PLANET FITNESS INC CL A COM 72703H101 117,185 37,787 47.59 6,283 46.46 0.0137
2018-11-07 2018-09-30 13F PLANET FITNESS INC CL A COM 72703H101 79,398 -5,823 -6.83 4,290 14.55 0.0083
2018-08-06 2018-06-30 13F PLANET FITNESS INC CL A COM 72703H101 85,221 3,971 4.89 3,745 22.03 0.0076
2018-05-02 2018-03-31 13F PLANET FITNESS INC CL A COM 72703H101 81,250 -1,298 -1.57 3,069 7.35 0.0064
2018-02-09 2017-12-31 13F PLANET FITNESS INC CL A COM 72703H101 82,548 -13,450 -14.01 2,859 10.39 0.0058
2017-11-06 2017-09-30 13F PLANET FITNESS INC CL A COM 72703H101 95,998 1,087 1.15 2,590 16.93 0.0056
2017-08-02 2017-06-30 13F PLANET FITNESS INC CL A COM 72703H101 94,911 66,687 236.28 2,215 307.17 0.0051
2017-05-02 2017-03-31 13F PLANET FITNESS INC CL A COM 72703H101 28,224 3,603 14.63 544 9.90 0.0013
2017-01-27 2016-12-31 13F PLANET FITNESS INC CL A COM 72703H101 24,621 8,645 54.11 495 54.21 0.0013
2016-11-08 2016-09-30 13F PLANET FITNESS INC CL A COM 72703H101 15,976 125 0.79 321 7.36 0.0009
2016-08-11 2016-06-30 13F PLANET FITNESS INC CL A COM 72703H101 15,851 -3,214 -16.86 299 -3.55 0.0009
2016-05-02 2016-03-31 13F PLANET FITNESS INC - CL A COM 72703H101 19,065 3,055 19.08 310 24.00 0.0010
2016-02-03 2015-12-31 13F PLANET FITNESS INC - CL A COM 72703H101 16,010 16,010 250 0.0008
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.