William Blair Investment Management
PLNT icon

William Blair Investment Management’s Planet Fitness PLNT Stock Holding History

William Blair Investment Management’s Portfolio PLNT Stock Details PLNT Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		– Sell
-1,452,642
Closed -$108M – 431
2026
Q1 		$108M Sell
1,452,642
-6,653
-0.5% -$585K 0.36% 79
2025
Q4 		$158M Sell
1,459,295
-134,612
-8% -$13.9M 0.44% 54
2025
Q3 		$165M Sell
1,593,907
-145,037
-8% -$15.4M 0.43% 63
2025
Q2 		$190M Sell
1,738,944
-104,743
-6% -$10.5M 0.5% 50
2025
Q1 		$178M Sell
1,843,687
-179,533
-9% -$18.1M 0.5% 54
2024
Q4 		$200M Sell
2,023,220
-220,762
-10% -$20.1M 0.49% 62
2024
Q3 		$182M Sell
2,243,982
-25,044
-1% -$1.96M 0.45% 69
2024
Q2 		$167M Buy
+2,269,026
New +$147M 0.44% 71
2023
Q3 		– Sell
-2,517,230
Closed -$170M – 413
2023
Q2 		$170M Buy
2,517,230
+657,366
+35% +$47.1M 0.54% 65
2023
Q1 		$144M Sell
1,859,864
-20,945
-1% -$1.67M 0.5% 63
2022
Q4 		$148M Buy
1,880,809
+720,961
+62% +$50.3M 0.57% 58
2022
Q3 		$66.9M Buy
1,159,848
+2,787
+0.2% +$201K 0.26% 109
2022
Q2 		$78.7M Buy
+1,157,061
New +$85.5M 0.29% 110
2020
Q3 		– Sell
-1,880,517
Closed -$114M – 358
2020
Q2 		$114M Buy
1,880,517
+18,679
+1% +$1.12M 0.46% 83
2020
Q1 		$90.7M Buy
1,861,838
+360,974
+24% +$25.2M 0.44% 76
2019
Q4 		$112M Buy
+1,500,864
New +$101M 0.45% 73

Other funds holding PLNT

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return
SIM
SRS Investment Management New York $10.8B AUM 34.05% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
DCM
Dorsal Capital Management Redwood City, California $2.82B AUM 7.73% 1-Year Est. Return
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
D.E. Shaw & Co
D.E. Shaw & Co New York $210B AUM 57.28% 1-Year Est. Return
SCM
Steadfast Capital Management New York $3.26B AUM 36.54% 1-Year Est. Return

William Blair Investment Management's PLNT Position: Q2 2026 in Review

William Blair Investment Management sold out of Planet Fitness (PLNT) in Q2 2026, closing a stake of 1,452,642 shares — an estimated $108M sold.

William Blair Investment Management first reported a position in PLNT in Q4 2019 and held it in 16 quarters. The position peaked at $200M in Q4 2024. 424 funds tracked by Wall St. Rank hold PLNT as of Q2 2026.

  • William Blair Investment Management reported no remaining Planet Fitness position as of Q2 2026 after selling out during the quarter.
  • William Blair Investment Management sold 1,452,642 Planet Fitness shares in Q2 2026, an estimated $108M.
  • William Blair Investment Management first reported a position in Planet Fitness in Q4 2019 and held it in 16 quarters.
  • William Blair Investment Management's Planet Fitness position peaked at $200M in Q4 2024.
  • 424 funds tracked by Wall St. Rank held Planet Fitness as of Q2 2026.

Based on William Blair Investment Management's 13F filing for Q2 2026, filed 12 Aug 2026.