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Fred Alger Management’s Inspire Medical Systems INSP Stock Holding History

Fred Alger Management’s Portfolio INSP Stock Details INSP Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q4 		– Sell
-6,936
Closed -$515K – 491
2025
Q3 		$515K Sell
6,936
-115,722
-94% -$11.7M ﹤0.01% 390
2025
Q2 		$15.9M Buy
122,658
+65,239
+114% +$9.46M 0.07% 132
2025
Q1 		$9.15M Sell
57,419
-5,706
-9% -$1.03M 0.05% 178
2024
Q4 		$11.7M Sell
63,125
-6,725
-10% -$1.31M 0.06% 170
2024
Q3 		$14.7M Sell
69,850
-79,747
-53% -$13.9M 0.07% 151
2024
Q2 		$20M Sell
149,597
-72,963
-33% -$13.8M 0.1% 133
2024
Q1 		$47.8M Sell
222,560
-183,347
-45% -$35.9M 0.24% 84
2023
Q4 		$82.6M Buy
405,907
+445
+0.1% +$72.1K 0.45% 57
2023
Q3 		$80.5M Sell
405,462
-61,916
-13% -$15.6M 0.46% 56
2023
Q2 		$152M Sell
467,378
-80,776
-15% -$23.1M 0.78% 23
2023
Q1 		$128M Buy
548,154
+38,021
+7% +$9.61M 0.69% 30
2022
Q4 		$128M Buy
510,133
+50,545
+11% +$10.8M 0.7% 36
2022
Q3 		$81.5M Sell
459,588
-130,807
-22% -$26.3M 0.41% 68
2022
Q2 		$108M Sell
590,395
-345,111
-37% -$68.8M 0.5% 52
2022
Q1 		$240M Sell
935,506
-84,214
-8% -$19.2M 0.77% 25
2021
Q4 		$235M Sell
1,019,720
-123,621
-11% -$30.2M 0.59% 50
2021
Q3 		$266M Buy
1,143,341
+8,460
+0.7% +$1.77M 0.63% 48
2021
Q2 		$219M Buy
1,134,881
+273,126
+32% +$54.2M 0.52% 64
2021
Q1 		$178M Buy
861,755
+66,865
+8% +$14.2M 0.47% 70
2020
Q4 		$150M Buy
794,890
+756,693
+1,981% +$124M 0.39% 83
2020
Q3 		$4.93M Buy
38,197
+573
+2% +$63.1K 0.01% 243
2020
Q2 		$3.27M Buy
+37,624
New +$2.89M 0.01% 270

Other funds holding INSP

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
DM
Deerfield Management New York $9.59B AUM 113.36% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
D.E. Shaw & Co
D.E. Shaw & Co New York $210B AUM 57.28% 1-Year Est. Return
William Blair Investment Management
William Blair Investment Management Chicago, Illinois $33.3B AUM 44.76% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Artisan Partners
Artisan Partners Milwaukee, Wisconsin $63.1B AUM 35.51% 1-Year Est. Return
Fuller & Thaler Asset Management
Fuller & Thaler Asset Management San Mateo, California $36.7B AUM 74.15% 1-Year Est. Return

Fred Alger Management's INSP Position: Q4 2025 in Review

Fred Alger Management sold out of Inspire Medical Systems (INSP) in Q4 2025, closing a stake of 6,936 shares — an estimated $515K sold.

Fred Alger Management first reported a position in INSP in Q2 2020 and held it in 22 quarters. The position peaked at $266M in Q3 2021. 343 funds tracked by Wall St. Rank hold INSP as of Q4 2025.

  • Fred Alger Management reported no remaining Inspire Medical Systems position as of Q4 2025 after selling out during the quarter.
  • Fred Alger Management sold 6,936 Inspire Medical Systems shares in Q4 2025, an estimated $515K.
  • Fred Alger Management first reported a position in Inspire Medical Systems in Q2 2020 and held it in 22 quarters.
  • Fred Alger Management's Inspire Medical Systems position peaked at $266M in Q3 2021.
  • 343 funds tracked by Wall St. Rank held Inspire Medical Systems as of Q4 2025.

Based on Fred Alger Management's 13F filing for Q4 2025, filed 17 Feb 2026.