Jim Simons
INSP icon

Jim Simons’s Inspire Medical Systems INSP Stock Holding History

Jim Simons’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 		$24.2M Buy
469,968
+59,200
+14% +$4.14M 0.04% 574
2025
Q4 		$37.9M Buy
410,768
+255,768
+165% +$24.5M 0.06% 369
2025
Q3 		$11.5M Buy
155,000
+28,200
+22% +$2.86M 0.02% 1024
2025
Q2 		$16.5M Sell
126,800
-63,900
-34% -$9.27M 0.02% 799
2025
Q1 		$30.4M Buy
190,700
+54,000
+40% +$9.77M 0.05% 490
2024
Q4 		$25.3M Buy
136,700
+36,200
+36% +$7.03M 0.04% 556
2024
Q3 		$21.2M Buy
100,500
+26,900
+37% +$4.67M 0.03% 634
2024
Q2 		$9.85M Sell
73,600
-36,000
-33% -$6.81M 0.02% 934
2024
Q1 		$23.5M Sell
109,600
-4,000
-4% -$784K 0.04% 562
2023
Q4 		$23.1M Sell
113,600
-201,800
-64% -$32.7M 0.04% 558
2023
Q3 		$62.6M Buy
315,400
+58,300
+23% +$14.7M 0.11% 201
2023
Q2 		$83.5M Buy
257,100
+46,100
+22% +$13.2M 0.12% 190
2023
Q1 		$49.4M Buy
211,000
+170,200
+417% +$43M 0.07% 353
2022
Q4 		$10.3M Buy
40,800
+24,300
+147% +$5.18M 0.01% 1067
2022
Q3 		$2.93M Buy
+16,500
New +$3.32M ﹤0.01% 1777
2022
Q2 		– Sell
-37,700
Closed -$9.68M – 4400
2022
Q1 		$9.68M Buy
37,700
+6,600
+21% +$1.51M 0.01% 1147
2021
Q4 		$7.16M Buy
+31,100
New +$7.59M 0.01% 1273
2021
Q3 		– Sell
-43,439
Closed -$8.39M – 3638
2021
Q2 		$8.39M Buy
+43,439
New +$8.62M 0.01% 1305
2021
Q1 		– Sell
-109,700
Closed -$20.6M – 3495
2020
Q4 		$20.6M Buy
109,700
+23,600
+27% +$3.86M 0.02% 740
2020
Q3 		$11.1M Sell
86,100
-77,500
-47% -$8.54M 0.01% 1063
2020
Q2 		$14.2M Sell
163,600
-113,700
-41% -$8.74M 0.01% 1012
2020
Q1 		$16.7M Buy
277,300
+201,000
+263% +$14.9M 0.02% 869
2019
Q4 		$5.66M Sell
76,300
-4,100
-5% -$264K ﹤0.01% 1773
2019
Q3 		$4.91M Sell
80,400
-400
-0.5% -$26.3K ﹤0.01% 1807
2019
Q2 		$4.9M Buy
+80,800
New +$4.36M ﹤0.01% 1829

Other funds holding INSP

BlackRock
BlackRock New York $6.73T AUM 46.02% 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 $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 $62.3B AUM 26.25% 1-Year Est. Return

Jim Simons's INSP Position: Q1 2026 in Review

Jim Simons increased its Inspire Medical Systems (INSP) stake by 14% in Q1 2026, buying an estimated $4.14M and bringing the position to 469,968 shares worth $24.2M. The position accounts for 0.04% of the portfolio, ranked #574.

Jim Simons first reported a position in INSP in Q2 2019 and has held it in 25 quarters since. The position peaked at $83.5M in Q2 2023. 301 funds tracked by Wall St. Rank hold INSP as of Q1 2026.

  • Jim Simons held 469,968 shares of Inspire Medical Systems worth $24.2M as of Q1 2026.
  • Jim Simons bought 59,200 Inspire Medical Systems shares in Q1 2026, an estimated $4.14M.
  • Inspire Medical Systems made up 0.04% of Jim Simons's portfolio in Q1 2026, its #574 holding.
  • Jim Simons first reported a position in Inspire Medical Systems in Q2 2019 and has held it in 25 quarters since.
  • Jim Simons's Inspire Medical Systems position peaked at $83.5M in Q2 2023.
  • 301 funds tracked by Wall St. Rank held Inspire Medical Systems as of Q1 2026.

Based on Renaissance Technologies's 13F filing for Q1 2026, filed 14 May 2026.