Group One Trading
INSP icon

Group One Trading’s Inspire Medical Systems INSP Stock Holding History

Group One Trading’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 		$87.7K Sell
1,700
-8,800
-84% -$616K ﹤0.01% 4847
2025
Q4 		$968K Sell
10,500
-2,600
-20% -$249K ﹤0.01% 2922
2025
Q3 		$972K Buy
+13,100
New +$1.33M ﹤0.01% 3062
2025
Q2 		– Sell
-5,700
Closed -$908K – 8261
2025
Q1 		$908K Buy
5,700
+4,800
+533% +$868K ﹤0.01% 2541
2024
Q4 		$167K Sell
900
-1,200
-57% -$233K ﹤0.01% 4083
2024
Q3 		$443K Sell
2,100
-3,200
-60% -$556K ﹤0.01% 2938
2024
Q2 		$709K Buy
5,300
+3,300
+165% +$624K ﹤0.01% 2277
2024
Q1 		$430K Buy
2,000
+1,600
+400% +$314K ﹤0.01% 2883
2023
Q4 		$81.4K Buy
400
+100
+33% +$16.2K ﹤0.01% 4637
2023
Q3 		$59.5K Hold
300
– – ﹤0.01% 4926
2023
Q2 		$97.4K Buy
+300
New +$85.7K ﹤0.01% 4649
2023
Q1 		– Sell
-300
Closed -$75.6K – 7537
2022
Q4 		$75.6K Buy
300
+100
+50% +$21.3K ﹤0.01% 4684
2022
Q3 		$35K Hold
200
– – ﹤0.01% 5683
2022
Q2 		$37K Buy
+200
New +$39.9K ﹤0.01% 5812
2022
Q1 		– Sell
-1,000
Closed -$230K – 8325
2021
Q4 		$230K Sell
1,000
-2,200
-69% -$537K ﹤0.01% 4946
2021
Q3 		$745K Buy
3,200
+1,400
+78% +$292K ﹤0.01% 3735
2021
Q2 		$348K Sell
1,800
-1,400
-44% -$278K ﹤0.01% 4620
2021
Q1 		$662K Buy
3,200
+2,600
+433% +$553K ﹤0.01% 3713
2020
Q4 		$113K Sell
600
-6,800
-92% -$1.11M ﹤0.01% 4479
2020
Q3 		$955K Buy
7,400
+6,800
+1,133% +$749K ﹤0.01% 2240
2020
Q2 		$52K Buy
+600
New +$46.1K ﹤0.01% 4330
2020
Q1 		– Sell
-2,000
Closed -$148K – 5489
2019
Q4 		$148K Sell
2,000
-400
-17% -$25.7K ﹤0.01% 3372
2019
Q3 		$146K Hold
2,400
– – ﹤0.01% 3301
2019
Q2 		$146K Buy
2,400
+400
+20% +$21.6K ﹤0.01% 3068
2019
Q1 		$114K Buy
+2,000
New +$108K ﹤0.01% 3083

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

Group One Trading's INSP Position: Q1 2026 in Review

Group One Trading reduced its Inspire Medical Systems (INSP) stake by 37% in Q1 2026, selling an estimated $48.5K and leaving 1,160 shares worth $59.8K. The position accounts for ﹤0.01% of the portfolio, ranked #5123.

Group One Trading first reported a position in INSP in Q1 2019 and has held it in 14 quarters since. The position peaked at $1.18M in Q3 2022. 301 funds tracked by Wall St. Rank hold INSP as of Q1 2026.

  • Group One Trading held 1,160 shares of Inspire Medical Systems worth $59.8K as of Q1 2026.
  • Group One Trading sold 693 Inspire Medical Systems shares in Q1 2026, an estimated $48.5K.
  • Inspire Medical Systems made up ﹤0.01% of Group One Trading's portfolio in Q1 2026, its #5123 holding.
  • Group One Trading first reported a position in Inspire Medical Systems in Q1 2019 and has held it in 14 quarters since.
  • Group One Trading's Inspire Medical Systems position peaked at $1.18M in Q3 2022.
  • 301 funds tracked by Wall St. Rank held Inspire Medical Systems as of Q1 2026.

Based on Group One Trading's 13F filing for Q1 2026, filed 13 May 2026.