California State Teachers Retirement System (CalSTRS)
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California State Teachers Retirement System (CalSTRS)’s Inspire Medical Systems INSP Stock Holding History

California State Teachers Retirement System (CalSTRS)’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 		$1.78M Buy
34,473
+8,287
+32% +$580K ﹤0.01% 1580
2025
Q4 		$2.42M Sell
26,186
-117
-0.4% -$11.2K ﹤0.01% 1315
2025
Q3 		$1.95M Sell
26,303
-1,251
-5% -$127K ﹤0.01% 1416
2025
Q2 		$3.58M Hold
27,554
– – ﹤0.01% 1060
2025
Q1 		$4.39M Sell
27,554
-311
-1% -$56.3K 0.01% 934
2024
Q4 		$5.17M Sell
27,865
-225
-0.8% -$43.7K 0.01% 896
2024
Q3 		$5.93M Sell
28,090
-1,455
-5% -$253K 0.01% 840
2024
Q2 		$3.95M Buy
29,545
+27
+0.1% +$5.11K ﹤0.01% 991
2024
Q1 		$6.34M Sell
29,518
-1,388
-4% -$272K 0.01% 815
2023
Q4 		$6.29M Sell
30,906
-1,291
-4% -$209K 0.01% 806
2023
Q3 		$6.39M Sell
32,197
-3,085
-9% -$778K 0.01% 776
2023
Q2 		$11.5M Sell
35,282
-741
-2% -$212K 0.02% 621
2023
Q1 		$8.43M Sell
36,023
-290
-0.8% -$73.3K 0.01% 692
2022
Q4 		$9.15M Buy
36,313
+1,423
+4% +$303K 0.01% 676
2022
Q3 		$6.19M Sell
34,890
-221
-0.6% -$44.4K 0.01% 797
2022
Q2 		$6.41M Buy
35,111
+289
+0.8% +$57.6K 0.01% 812
2022
Q1 		$8.94M Sell
34,822
-2,909
-8% -$665K 0.01% 766
2021
Q4 		$8.68M Buy
37,731
+910
+2% +$222K 0.01% 830
2021
Q3 		$8.57M Sell
36,821
-242
-0.7% -$50.5K 0.01% 877
2021
Q2 		$7.16M Sell
37,063
-2,464
-6% -$489K 0.01% 981
2021
Q1 		$8.18M Sell
39,527
-117
-0.3% -$24.9K 0.01% 911
2020
Q4 		$7.46M Buy
39,644
+17
+0% +$2.78K 0.01% 888
2020
Q3 		$5.11M Buy
39,627
+159
+0.4% +$17.5K 0.01% 958
2020
Q2 		$3.44M Buy
39,468
+19,130
+94% +$1.47M 0.01% 1161
2020
Q1 		$1.23M Sell
20,338
-230
-1% -$17K ﹤0.01% 1577
2019
Q4 		$1.53M Sell
20,568
-319
-2% -$20.5K ﹤0.01% 1720
2019
Q3 		$1.27M Buy
20,887
+377
+2% +$24.8K ﹤0.01% 1780
2019
Q2 		$1.24M Sell
20,510
-2,126
-9% -$115K ﹤0.01% 1834
2019
Q1 		$1.28M Buy
22,636
+4,038
+22% +$218K ﹤0.01% 1788
2018
Q4 		$786K Buy
18,598
+6,529
+54% +$278K ﹤0.01% 2038
2018
Q3 		$508K Buy
12,069
+79
+0.7% +$3.71K ﹤0.01% 2446
2018
Q2 		$428K Buy
+11,990
New +$387K ﹤0.01% 2538

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

California State Teachers Retirement System (CalSTRS)'s INSP Position: Q1 2026 in Review

California State Teachers Retirement System (CalSTRS) increased its Inspire Medical Systems (INSP) stake by 32% in Q1 2026, buying an estimated $580K and bringing the position to 34,473 shares worth $1.78M. The position accounts for ﹤0.01% of the portfolio, ranked #1580.

California State Teachers Retirement System (CalSTRS) first reported a position in INSP in Q2 2018 and has held it in 32 quarters since. The position peaked at $11.5M in Q2 2023. 301 funds tracked by Wall St. Rank hold INSP as of Q1 2026.

  • California State Teachers Retirement System (CalSTRS) held 34,473 shares of Inspire Medical Systems worth $1.78M as of Q1 2026.
  • California State Teachers Retirement System (CalSTRS) bought 8,287 Inspire Medical Systems shares in Q1 2026, an estimated $580K.
  • Inspire Medical Systems made up ﹤0.01% of California State Teachers Retirement System (CalSTRS)'s portfolio in Q1 2026, its #1580 holding.
  • California State Teachers Retirement System (CalSTRS) first reported a position in Inspire Medical Systems in Q2 2018 and has held it in 32 quarters since.
  • California State Teachers Retirement System (CalSTRS)'s Inspire Medical Systems position peaked at $11.5M in Q2 2023.
  • 301 funds tracked by Wall St. Rank held Inspire Medical Systems as of Q1 2026.

Based on California State Teachers Retirement System (CalSTRS)'s 13F filing for Q1 2026, filed 18 May 2026.