Arrowstreet Capital
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Arrowstreet Capital’s Inspire Medical Systems INSP Stock Holding History

Arrowstreet Capital’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
2026
Q1 		– Sell
-76,028
Closed -$7.01M – 1974
2025
Q4 		$7.01M Buy
+76,028
New +$7.27M ﹤0.01% 1048
2025
Q1 		– Sell
-35,294
Closed -$6.54M – 1902
2024
Q4 		$6.54M Buy
35,294
+33,202
+1,587% +$6.44M 0.01% 934
2024
Q3 		$442K Buy
+2,092
New +$363K ﹤0.01% 1533
2023
Q4 		– Sell
-38,738
Closed -$7.69M – 1477
2023
Q3 		$7.69M Buy
38,738
+550
+1% +$139K 0.01% 576
2023
Q2 		$12.4M Buy
38,188
+26,298
+221% +$7.51M 0.02% 468
2023
Q1 		$2.78M Sell
11,890
-11,581
-49% -$2.93M ﹤0.01% 840
2022
Q4 		$5.91M Sell
23,471
-5,194
-18% -$1.11M 0.01% 638
2022
Q3 		$5.08M Buy
+28,665
New +$5.76M 0.01% 651
2022
Q1 		– Sell
-9,825
Closed -$2.26M – 1366
2021
Q4 		$2.26M Sell
9,825
-3,992
-29% -$975K ﹤0.01% 985
2021
Q3 		$3.22M Buy
13,817
+10,500
+317% +$2.19M ﹤0.01% 1042
2021
Q2 		$641K Sell
3,317
-63,072
-95% -$12.5M ﹤0.01% 1641
2021
Q1 		$13.7M Buy
66,389
+4,198
+7% +$892K 0.02% 739
2020
Q4 		$11.7M Buy
+62,191
New +$10.2M 0.02% 817

Other funds holding INSP

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
DM
Deerfield Management New York $9.59B AUM 113.36% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
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 $3.38T AUM 44.17% 1-Year Est. Return
Artisan Partners
Artisan Partners Milwaukee, Wisconsin $63.1B AUM 35.51% 1-Year Est. Return

Arrowstreet Capital's INSP Position: Q1 2026 in Review

Arrowstreet Capital sold out of Inspire Medical Systems (INSP) in Q1 2026, closing a stake of 76,028 shares — an estimated $7.01M sold.

Arrowstreet Capital first reported a position in INSP in Q4 2020 and held it in 13 quarters. The position peaked at $13.7M in Q1 2021. 301 funds tracked by Wall St. Rank hold INSP as of Q1 2026.

  • Arrowstreet Capital reported no remaining Inspire Medical Systems position as of Q1 2026 after selling out during the quarter.
  • Arrowstreet Capital sold 76,028 Inspire Medical Systems shares in Q1 2026, an estimated $7.01M.
  • Arrowstreet Capital first reported a position in Inspire Medical Systems in Q4 2020 and held it in 13 quarters.
  • Arrowstreet Capital's Inspire Medical Systems position peaked at $13.7M in Q1 2021.
  • 301 funds tracked by Wall St. Rank held Inspire Medical Systems as of Q1 2026.

Based on Arrowstreet Capital's 13F filing for Q1 2026, filed 14 May 2026.