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Atika Capital Management’s Inspire Medical Systems INSP Stock Holding History

Atika Capital Management’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
2020
Q4 		– Sell
-80,000
Closed -$10.3M – 125
2020
Q3 		$10.3M Buy
+80,000
New +$8.82M 0.85% 43

Other funds holding INSP

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
DM
Deerfield Management New York $8.48B AUM 99.04% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
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
Fuller & Thaler Asset Management
Fuller & Thaler Asset Management San Mateo, California $29.7B AUM 43.33% 1-Year Est. Return

Atika Capital Management's INSP Position: Q4 2025 in Review

Atika Capital Management sold out of Inspire Medical Systems (INSP) in Q4 2025, closing a stake of 187,600 shares — an estimated $13.9M sold.

Atika Capital Management first reported a position in INSP in Q2 2018 and held it in 30 quarters. The position peaked at $45.5M in Q2 2023. 342 funds tracked by Wall St. Rank hold INSP as of Q4 2025.

  • Atika Capital Management reported no remaining Inspire Medical Systems position as of Q4 2025 after selling out during the quarter.
  • Atika Capital Management sold 187,600 Inspire Medical Systems shares in Q4 2025, an estimated $13.9M.
  • Atika Capital Management first reported a position in Inspire Medical Systems in Q2 2018 and held it in 30 quarters.
  • Atika Capital Management's Inspire Medical Systems position peaked at $45.5M in Q2 2023.
  • 342 funds tracked by Wall St. Rank held Inspire Medical Systems as of Q4 2025.

Based on Atika Capital Management's 13F filing for Q4 2025, filed 13 Feb 2026.