William Frels - Mairs & Power
Period:    Q1 2026
Portfolio date:    31 Mar 2026
No. of stocks:    245
Portfolio value:    $9,786,094,433
Holdings Activity Buys Sells    History
Holding/activity history for  Inspire Medical Systems, Inc. (INSP)
← All INSP superinvestors
Period Shares % of Portfolio Activity % Change to Portfolio Price Value Filing
2026   Q1 0 0.00 Sell 100.00% 0.05 $48.30–102.64 · VW $69.78i SEC
2025   Q4 57,616 0.05 Reduce 11.96% <0.01 $71.45–147.03 · VW $102.34i $5,313,924 SEC
2025   Q3 65,446 0.05 Reduce 3.48% <0.01 $70.77–143.96 · VW $94.54i $4,856,093 SEC
2025   Q2 67,804 0.09 Reduce 4.20% <0.01 $125.22–163.35 · VW $141.86i $8,798,925 SEC
2025   Q1 70,776 0.12 Add 9.44% 0.01 $138.05–216.01 · VW $179.41i $11,273,201 SEC
2024   Q4 64,671 0.12 Add 5.72% <0.01 $170.23–214.20 · VW $193.08i $11,988,710 SEC
2024   Q3 61,173 0.12 Reduce 4.17% <0.01 $123.00–225.00 · VW $180.46i $12,910,562 SEC
2024   Q2 63,833 0.08 Add 7.85% <0.01 $129.95–257.40 · VW $184.40i $8,542,770 SEC
2024   Q1 59,188 0.12 Reduce 8.39% 0.01 $163.57–226.38 · VW $195.61i $12,712,991 SEC
2023   Q4 64,609 0.14 Add 3.36% <0.01 $123.27–206.88 · VW $159.86i $13,143,409 SEC
2023   Q3 62,511 0.15 Add 18.81% 0.02 $183.10–330.00 · VW $243.07i $12,404,683 SEC
2023   Q2 52,615 0.19 Reduce 50.97% 0.15 $223.21–327.77 · VW $289.97i $17,080,934 SEC
2023   Q1 107,313 0.29 Reduce 14.59% 0.06 $224.42–282.31 · VW $252.39i $25,118,754 SEC
2022   Q4 125,639 0.38 Reduce 4.82% 0.01 $159.62–262.54 · VW $212.30i $31,645,951 SEC
2022   Q3 132,007 0.30 Add 0.19% <0.01 $164.49–231.41 · VW $201.87i $23,414,000 SEC
2022   Q2 131,751 0.29 Reduce 0.52% <0.01 $142.74–272.04 · VW $189.97i $24,067,000 SEC
2022   Q1 132,439 0.34 Reduce 22.59% 0.08 $189.24–270.22 · VW $229.27i $33,996,000 SEC
2021   Q4 171,083 0.36 Reduce 0.65% <0.01 $198.01–286.29 · VW $241.28i $39,359,000 SEC
2021   Q3 172,203 0.40 Reduce 3.11% 0.01 $159.18–264.40 · VW $207.56i $40,103,000 SEC
2021   Q2 177,734 0.34 Add 132.70% 0.19 $160.02–244.89 · VW $194.14i $34,349,000 SEC
2021   Q1 76,379 0.17 Reduce 7.63% 0.01 $179.62–252.25 · VW $211.30i $15,810,000 SEC
2020   Q4 82,685 0.17 $188.09 $15,552,000 SEC
2020   Q3 82,685 0.13 Reduce 20.97% 0.03 $85.03–132.69 · VW $113.95i $10,670,000 SEC
2020   Q2 104,625 0.12 Reduce 31.49% 0.04 $50.00–99.26 · VW $78.87i $9,104,000 SEC
2020   Q1 152,710 0.13 Reduce 2.90% <0.01 $40.53–95.00 · VW $69.89i $9,205,000 SEC
2019   Q4 157,265 0.13 Add 0.03% $51.98–75.91 · VW $64.07i $11,671,000 SEC
2019   Q3 157,215 0.12 Add 0.26% <0.01 $54.29–71.71 · VW $64.99i $9,593,000 SEC
2019   Q2 156,810 0.11 Add 0.05% <0.01 $46.00–61.45 · VW $54.15i $9,511,000 SEC
2019   Q1 156,730 0.11 Add 0.11% <0.01 $41.95–64.34 · VW $54.99i $8,899,000 SEC
2018   Q4 156,565 0.09 Add 22.13% 0.02 $35.43–54.51 · VW $42.11i $6,615,000 SEC
2018   Q3 128,200 0.06 Add 8.55% <0.01 $35.35–57.87 · VW $46.54i $5,395,000 SEC
2018   Q2 118,100 0.05 Buy 0.05 $22.50–41.01 · VW $30.91i
IPO/listing quarter
$4,211,000 SEC
Price snapshot:
Current price$51.36
52-week low$38.91
52-week high$147.03