Jane Street
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Jane Street’s Inspire Medical Systems INSP Stock Holding History

Jane Street’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 		$279K Sell
5,400
-17,100
-76% -$1.2M ﹤0.01% 9386
2025
Q4 		$2.08M Buy
22,500
+12,400
+123% +$1.19M ﹤0.01% 4745
2025
Q3 		$749K Sell
10,100
-3,200
-24% -$324K ﹤0.01% 6939
2025
Q2 		$1.73M Sell
13,300
-8,600
-39% -$1.25M ﹤0.01% 4664
2025
Q1 		$3.49M Buy
21,900
+5,600
+34% +$1.01M ﹤0.01% 3484
2024
Q4 		$3.02M Sell
16,300
-19,400
-54% -$3.77M ﹤0.01% 3431
2024
Q3 		$7.53M Sell
35,700
-31,400
-47% -$5.45M ﹤0.01% 2255
2024
Q2 		$8.98M Sell
67,100
-700
-1% -$132K ﹤0.01% 2176
2024
Q1 		$14.6M Buy
67,800
+28,500
+73% +$5.59M ﹤0.01% 1456
2023
Q4 		$7.99M Buy
39,300
+5,900
+18% +$956K ﹤0.01% 2227
2023
Q3 		$6.63M Buy
33,400
+9,000
+37% +$2.27M ﹤0.01% 2244
2023
Q2 		$7.92M Buy
24,400
+13,000
+114% +$3.71M ﹤0.01% 2173
2023
Q1 		$2.67M Buy
11,400
+5,200
+84% +$1.31M ﹤0.01% 3342
2022
Q4 		$1.56M Sell
6,200
-160,600
-96% -$34.2M ﹤0.01% 4256
2022
Q3 		$29.6M Buy
166,800
+74,400
+81% +$15M 0.01% 795
2022
Q2 		$16.9M Buy
92,400
+9,400
+11% +$1.87M 0.01% 1250
2022
Q1 		$21.3M Buy
83,000
+35,200
+74% +$8.04M 0.01% 1213
2021
Q4 		$11M Buy
47,800
+43,300
+962% +$10.6M ﹤0.01% 1773
2021
Q3 		$1.05M Buy
4,500
+2,100
+88% +$438K ﹤0.01% 5818
2021
Q2 		$464K Sell
2,400
-1,600
-40% -$317K ﹤0.01% 7386
2021
Q1 		$828K Buy
4,000
+2,200
+122% +$468K ﹤0.01% 5827
2020
Q4 		$339K Sell
1,800
-17,500
-91% -$2.86M ﹤0.01% 6246
2020
Q3 		$2.49M Sell
19,300
-13,800
-42% -$1.52M ﹤0.01% 2706
2020
Q2 		$2.88M Buy
+33,100
New +$2.54M ﹤0.01% 2569

Other funds holding INSP

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
DM
Deerfield Management New York $8.48B AUM 99.04% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
D.E. Shaw & Co
D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return
William Blair Investment Management
William Blair Investment Management Chicago, Illinois $30.3B AUM 33.75% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Artisan Partners
Artisan Partners Milwaukee, Wisconsin $62.3B AUM 26.25% 1-Year Est. Return

Jane Street's INSP Position: Q1 2026 in Review

Jane Street sold out of Inspire Medical Systems (INSP) in Q1 2026, closing a stake of 277,199 shares — an estimated $19.4M sold.

Jane Street first reported a position in INSP in Q1 2019 and held it in 22 quarters. The position peaked at $25.6M in Q4 2025. 301 funds tracked by Wall St. Rank hold INSP as of Q1 2026.

  • Jane Street reported no remaining Inspire Medical Systems position as of Q1 2026 after selling out during the quarter.
  • Jane Street sold 277,199 Inspire Medical Systems shares in Q1 2026, an estimated $19.4M.
  • Jane Street first reported a position in Inspire Medical Systems in Q1 2019 and held it in 22 quarters.
  • Jane Street's Inspire Medical Systems position peaked at $25.6M in Q4 2025.
  • 301 funds tracked by Wall St. Rank held Inspire Medical Systems as of Q1 2026.

Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.