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PI in the 13F filings

Impinj Inc · CUSIP 453204109

Sector · Technology hardware and equipment
Quarter
Q3 2026 · early filersQ2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023
Quarter end
30 Sep 2025
the date the book describes
Filed
17 Nov 2025
latest of these filings; the earliest 13 Nov 2025
Managers listing it
7
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
6,642,736
combined, among listed positions
Reported value
$1.2bn
combined, at the quarter end

Among the 95 comparable managers: 5 buyers (opened or added shares) and 1 seller (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 PI 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.

7 of 7 holders

ActionFiling
Fidelity (FMR LLC)4,338,545$784munder 0.1%Added+16,74413 Nov 2025 (the filing on sec.gov)
Whale Rock Capital Management LLC1,224,585$221m2.61%Added+338,48714 Nov 2025 (the filing on sec.gov)
Capital World Investors754,346$136munder 0.1%Held013 Nov 2025 (the filing on sec.gov)
Janus Henderson Group Ltd250,489$45munder 0.1%Trimmed-154,65314 Nov 2025 (the filing on sec.gov)
ExodusPoint Capital Management LP65,323$12m0.12%Added+15,23214 Nov 2025 (the filing on sec.gov)
Davidson Kempner Capital Management LP5,715$1.0munder 0.1%Newnew14 Nov 2025 (the filing on sec.gov)
Caxton Associates LLP3,733$675kunder 0.1%Newnew17 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 (2)

Exited (0)

No exit shown by a manager’s own filing.

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.
12 in Q3 2024 to 8 in Q2 2026

Tracked managers listing it, at least.

05101520192020202120222023202420252026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
PI by quarter
QuarterHoldersReported valueBuyersSellers
Q4 20161$7.2mn.a.n.a.
Q2 20171$285kn.a.n.a.
Q3 20171$1.4mn.a.n.a.
Q4 20171$2.0mn.a.n.a.
Q1 20191$385kn.a.n.a.
Q2 20192$2.2mn.a.n.a.
Q3 20192$2.6mn.a.n.a.
Q4 20192$2.4mn.a.n.a.
Q1 20203$9.4mn.a.n.a.
Q2 20202$9.0mn.a.n.a.
Q3 20201$819kn.a.n.a.
Q4 20201$1.3mn.a.n.a.
Q1 20214$21mn.a.n.a.
Q2 20212$4.6mn.a.n.a.
Q3 20211$1.6mn.a.n.a.
Q4 20214$81mn.a.n.a.
Q1 20223$22mn.a.n.a.
Q2 20223$63mn.a.n.a.
Q3 20225$95mn.a.n.a.
Q4 20228$370mn.a.n.a.
Q1 202310$563mn.a.n.a.
Q2 20235$126mn.a.n.a.
Q3 20234$78mn.a.n.a.
Q4 20237$148m33
Q1 20246$749m41
Q2 202411$1.0bn92
Q3 202412$1.4bn83
Q4 202410$911m74
Q1 20255$288m50
Q2 20257$750m33
Q3 20257$1.2bn51
Q4 20255$1.1bn1612
Q1 20264$164m1117
Q2 20268$1.1bn1112

Compare with…

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

PI and AAPL →PI and SNDK →PI and CSCO →Choose a stock to compare with PI →

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 PI, latest filings →Back to the 13F Explorer →