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 		$5.16K Hold
100
– – ﹤0.01% 6699
2025
Q4 		$9.22K Sell
100
-5,000
-98% -$478K ﹤0.01% 6855
2025
Q3 		$378K Buy
+5,100
New +$516K ﹤0.01% 3975
2025
Q1 		– Sell
-800
Closed -$148K – 7944
2024
Q4 		$148K Sell
800
-500
-38% -$97.1K ﹤0.01% 4184
2024
Q3 		$274K Sell
1,300
-16,100
-93% -$2.8M ﹤0.01% 3343
2024
Q2 		$2.33M Buy
17,400
+9,700
+126% +$1.84M 0.01% 1319
2024
Q1 		$1.65M Buy
7,700
+4,500
+141% +$882K 0.01% 1639
2023
Q4 		$651K Sell
3,200
-700
-18% -$113K ﹤0.01% 2849
2023
Q3 		$774K Hold
3,900
– – ﹤0.01% 2513
2023
Q2 		$1.27M Buy
3,900
+3,800
+3,800% +$1.09M ﹤0.01% 2138
2023
Q1 		$23.4K Sell
100
-17,300
-99% -$4.37M ﹤0.01% 5402
2022
Q4 		$4.38M Buy
+17,400
New +$3.71M 0.01% 1234
2022
Q2 		– Sell
-2,300
Closed -$590K – 8132
2022
Q1 		$590K Buy
+2,300
New +$526K ﹤0.01% 3638
2021
Q4 		– Sell
-3,100
Closed -$722K – 8488
2021
Q3 		$722K Buy
3,100
+2,000
+182% +$417K ﹤0.01% 3776
2021
Q2 		$213K Buy
1,100
+400
+57% +$79.3K ﹤0.01% 5186
2021
Q1 		$145K Sell
700
-300
-30% -$63.8K ﹤0.01% 5312
2020
Q4 		$188K Sell
1,000
-15,400
-94% -$2.52M ﹤0.01% 4094
2020
Q3 		$2.12M Buy
+16,400
New +$1.81M 0.01% 1552
2020
Q1 		– Sell
-400
Closed -$30K – 5488
2019
Q4 		$30K Hold
400
– – ﹤0.01% 4224
2019
Q3 		$24K Sell
400
-1,600
-80% -$105K ﹤0.01% 4302
2019
Q2 		$121K Buy
2,000
+1,900
+1,900% +$102K ﹤0.01% 3201
2019
Q1 		$6K Hold
100
– – ﹤0.01% 4399
2018
Q4 		$4K Buy
+100
New +$4.25K ﹤0.01% 4523

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.