L3VLUP
ProSign in

INSP in the 13F filings

Inspire Med Sys Inc · CUSIP 457730109

Sector · Medical devices and instrumentsTheme · Healthcare: biopharma and medtech· L3VLUP-definedTheme · Surgical, medical and electromedical devices
Quarter
Q2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023Q3 2023
Quarter end
30 Sep 2025
the date the book describes
Filed
14 Nov 2025
latest of these filings; the earliest 31 Oct 2025
Managers listing it
8
at least, of 95 tracked, among listed positions
Comparable managers
95
filed both Q2 2025 and Q3 2025; 5 listed it in both
Shares listed
3,122,178
combined, among listed positions
Reported value
$232m
combined, at the quarter end

Among the 95 comparable managers: 6 buyers (opened or added shares) and 3 sellers (trimmed or exited), at least, among listed positions. Their net change in shares is not known from listed positions, because at least one of them lists it in only one of the two quarters.

Managers listing INSP in Q3 2025

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q2 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

8 of 8 holders

ActionFiling
Baillie Gifford & Co1,084,350$80m0.06%Trimmed-29,53831 Oct 2025 (the filing on sec.gov)
Janus Henderson Group Ltd667,078$49munder 0.1%Added+26,15514 Nov 2025 (the filing on sec.gov)
Balyasny Asset Management LLC614,359$46m0.06%Newnew14 Nov 2025 (the filing on sec.gov)
Artisan Partners LP526,242$39m0.06%Added+163,91612 Nov 2025 (the filing on sec.gov)
Winton Group Ltd91,458$6.8m0.25%Added+83,36913 Nov 2025 (the filing on sec.gov)
Bridgewater Associates LP88,952$6.6munder 0.1%Trimmed-52,69513 Nov 2025 (the filing on sec.gov)
Quantbot Technologies LP41,063$3.0m0.08%Newnew12 Nov 2025 (the filing on sec.gov)
Freestone Grove Partners LP8,676$644kunder 0.1%Newnew14 Nov 2025 (the filing on sec.gov)

Largest increases and reductions, by shares

Q2 2025 to Q3 2025, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (3)

Exited (1)

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
11 in Q3 2024 to 3 in Q2 2026

Tracked managers listing it, at least.

0510152020192020202120222023202420252026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
INSP by quarter
QuarterHoldersReported valueBuyersSellers
Q2 20181$1.2mn.a.n.a.
Q4 20181$7.0mn.a.n.a.
Q1 20192$6.5mn.a.n.a.
Q2 20192$2.2mn.a.n.a.
Q4 20191$385kn.a.n.a.
Q1 20204$7.0mn.a.n.a.
Q2 20205$422mn.a.n.a.
Q3 20208$638mn.a.n.a.
Q4 202010$936mn.a.n.a.
Q1 202110$790mn.a.n.a.
Q2 202111$277mn.a.n.a.
Q3 202111$486mn.a.n.a.
Q4 202110$282mn.a.n.a.
Q1 202214$1.3bnn.a.n.a.
Q2 202213$790mn.a.n.a.
Q3 202214$436mn.a.n.a.
Q4 202215$740mn.a.n.a.
Q1 202315$738mn.a.n.a.
Q2 202318$1.2bnn.a.n.a.
Q3 202313$1.1bnn.a.n.a.
Q4 202310$1.6bn92
Q1 20248$2.0bn46
Q2 20247$666m64
Q3 202411$1.6bn74
Q4 202411$1.2bn66
Q1 202510$627m64
Q2 20257$649m44
Q3 20258$232m63
Q4 202510$554m1820
Q1 20264$199m1419
Q2 20263$45m1315

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

INSP and LLY →INSP and JNJ →INSP and VRTX →Choose a stock to compare with INSP →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own INSP, latest filings →Back to the 13F Explorer →