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Inspire Medical Systems
INSP

343 hedge funds and large institutions have $6.35B invested in Inspire Medical Systems in 2023 Q4 according to their latest regulatory filings, with 64 funds opening new positions, 120 increasing their positions, 121 reducing their positions, and 80 closing their positions.

New
Increased
Maintained
Reduced
Closed

57% more funds holding in top 10

Funds holding in top 10: 7 → 11 (+4)

12% more capital invested

Capital invested by funds: $5.65B → $6.35B (+$692M)

9.01% more ownership

Funds ownership: 96.66% → 105.68% (+9%)

1% less repeat investments, than reductions

Existing positions increased: 120 | Existing positions reduced: 121

6% less funds holding

Funds holding: 364 → 343 (-21)

20% less first-time investments, than exits

New positions opened: 64 | Existing positions closed: 80

25% less call options, than puts

Call options by funds: $78.6M | Put options by funds: $105M

Holders
343
Holders Change
-21
Holders Change %
-5.77%
% of All Funds
5%
Holding in Top 10
11
Holding in Top 10 Change
+4
Holding in Top 10 Change %
+57.14%
% of All Funds
0.16%
New
64
Increased
120
Reduced
121
Closed
80
Calls
$78.6M
Puts
$105M
Net Calls
-$26.9M
Net Calls Change
+$45.6M

Top Buyers

1
Baillie Gifford & Co
Baillie Gifford & Co
United Kingdom
+$196M
2
Fidelity Investments
Fidelity Investments
Massachusetts
+$127M
3
JP Morgan Chase
JP Morgan Chase
New York
+$86.2M
4
Wellington Management Group
Wellington Management Group
Massachusetts
+$73.4M
5
FCM
Farallon Capital Management
California
+$69.5M

Top Sellers

1
1832 Asset Management
1832 Asset Management
Ontario, Canada
-$112M
2
Point72 Asset Management
Point72 Asset Management
Connecticut
-$66.5M
3
Millennium Management
Millennium Management
New York
-$49.7M
4
Franklin Resources
Franklin Resources
California
-$44.6M
5
Loomis, Sayles & Company
Loomis, Sayles & Company
Massachusetts
-$39.7M
Name Holding Trade Value Shares
Change 		Change in
Stake
Fidelity Investments
1
Fidelity Investments
Massachusetts
$663M +$127M +786,080 +32%
Vanguard Group
2
Vanguard Group
Pennsylvania
$596M -$13.1M -80,927 -3%
BlackRock
3
BlackRock
New York
$366M -$15.4M -95,178 -5%
Wellington Management Group
4
Wellington Management Group
Massachusetts
$291M +$73.4M +453,294 +46%
Baillie Gifford & Co
5
Baillie Gifford & Co
United Kingdom
$250M +$196M +1,212,175 +6,847%
WA
6
Wasatch Advisors
Utah
$223M +$19.4M +119,738 +12%
FCM
7
Farallon Capital Management
California
$174M +$69.5M +429,000 +101%
William Blair Investment Management
8
William Blair Investment Management
Illinois
$164M +$18.3M +112,802 +16%
FCM
9
Frontier Capital Management
Massachusetts
$151M +$61.6M +380,362 +105%
CIP
10
Champlain Investment Partners
Vermont
$132M +$29M +179,050 +38%
JP Morgan Chase
11
JP Morgan Chase
New York
$129M +$86.2M +532,353 +535%
Westfield Capital Management
12
Westfield Capital Management
Massachusetts
$111M -$30.3M -186,781 -26%
Macquarie Group
13
Macquarie Group
Australia
$110M -$10.5M -65,031 -11%
State Street
14
State Street
Massachusetts
$108M +$1.08M +6,689 +1%
Franklin Resources
15
Franklin Resources
California
$105M -$44.6M -275,523 -35%
Ameriprise
16
Ameriprise
Minnesota
$99.9M +$25.6M +157,779 +47%
Point72 Asset Management
17
Point72 Asset Management
Connecticut
$96.3M -$66.5M -410,167 -46%
Federated Hermes
18
Federated Hermes
Pennsylvania
$92.2M -$6.99M -43,132 -9%
Geode Capital Management
19
Geode Capital Management
Massachusetts
$90.5M +$3.32M +20,514 +5%
FAM
20
Fred Alger Management
New York
$82.6M +$72.1K +445 +0.1%
Bank of New York Mellon
21
Bank of New York Mellon
New York
$81.1M +$4M +24,686 +7%
CS
22
Credit Suisse
Switzerland
$72.4M +$1.26M +7,759 +2%
EP
23
Eversept Partners
New York
$71.4M +$25.6M +158,098 +82%
Morgan Stanley
24
Morgan Stanley
New York
$70.6M +$36M +222,379 +178%
Jennison Associates
25
Jennison Associates
New York
$62M +$42.8M +264,139 +648%
1
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INSP Hedge Fund Activity: Q4 2023 in Review

343 of the 6,859 institutional investors tracked by Wall St. Rank reported a position in Inspire Medical Systems (INSP) for Q4 2023, worth a combined $6.35B — up 12% from $5.65B a quarter earlier.

Sellers outnumbered buyers: 80 funds closed out of INSP and 64 opened new positions — a net loss of 16 holders — while 121 trimmed existing stakes and 120 added.

The largest buyer was Baillie Gifford & Co, adding an estimated $196M. The largest seller was 1832 Asset Management, exiting entirely with an estimated $112M sold.

  • 343 institutional investors held Inspire Medical Systems (INSP) as of Q4 2023, down from 364 in Q3 2023.
  • Funds reported $6.35B of Inspire Medical Systems stock for Q4 2023, up 12% quarter-over-quarter.
  • 64 funds opened new Inspire Medical Systems positions in Q4 2023 and 80 closed out, a net change of -16 holders.
  • The largest Inspire Medical Systems buyer in Q4 2023 was Baillie Gifford & Co, an estimated $196M added.
  • The largest Inspire Medical Systems seller in Q4 2023 was 1832 Asset Management, an estimated $112M sold.

Based on aggregated 13F filings for Q4 2023.