PI Impinj, Inc.

NASDAQ
$176.82

Impinj, Inc. (PI) Hedge Fund Activity

This view isolates hedge funds from the broader institutional ownership shown on the Institutional tab. A pension fund tracking an index may have no view on a stock; when a hedge fund builds or exits a position, that decision can carry information. This page measures those changes. Positions as of June 30, 2026.

Based on quarterly 13F long-equity filings. Changes compare reported quarter-end positions; filings can be reported up to 45 days later and do not represent a fund's complete exposure.

Hedge fund breadth
+5.26
10 buyers / 9 sellers
MIXED
Funds compared
20
funds with comparable PI positions
17 current holders · 16 prior-quarter holders
Net share change
+115.3K
+1.11M added, -995.0K cut
Position activity
4 new 6 increased 6 reduced 3 exited

Most significant moves

Ranked by conviction, not size — how much of the fund's own book the position represents, how far it moved, and what kind of fund made it.

Fund Action Shares changed Change Est. value Portfolio wt. Score
Alyeska Investment Group, L.P. Sold Out -734.8K -100.0% $105.2M 0.0% 65
Polar Asset Management Partners Long/Short Sold Out -136.7K -100.0% $19.6M 0.0% 61
MILLENNIUM MANAGEMENT LLC Increased +732.1K +715.9% $104.9M 0.1% 60
MARSHALL WACE, LLP Long/Short Sold Out -61.3K -100.0% $8.8M 0.0% 58
Weiss Asset Management Event Quant New +57.7K — $8.3M 0.1% 57
CITADEL ADVISORS LLC Quant Increased +56.3K +964.8% $8.1M 0.0% 54
Armistice Capital Long/Short Healthcare New +3.2K — $464.6K 0.0% 53
LMR Partners Event Quant New +6.7K — $963.7K 0.0% 53
Boothbay Fund Management New +11.5K — $1.6M 0.0% 51
Squarepoint Ops LLC Quant Increased +65.7K +128.4% $9.4M 0.0% 51

Most significant buyers

By move score, not size.

  • MILLENNIUM MANAGEMENT LLC Increased · +732.1K
  • Weiss Asset Management New · +57.7K
  • CITADEL ADVISORS LLC Increased · +56.3K
  • Armistice Capital New · +3.2K
  • LMR Partners New · +6.7K

Most significant sellers

By move score, not size.

  • Alyeska Investment Group, L.P. Sold Out · -734.8K
  • Polar Asset Management Partners Sold Out · -136.7K
  • MARSHALL WACE, LLP Sold Out · -61.3K
  • Walleye Capital Reduced · -7.3K
  • Cinctive Capital Management Reduced · -34.7K

Hedge fund positions

Fund Tier Shares Previous Change Change % Portfolio wt. Action Score
Alyeska Investment Group, L.P. 2 0 734.8K -734.8K -100.0% 0.0% Sold Out 65
Polar Asset Management Partners 3 0 136.7K -136.7K -100.0% 0.0% Sold Out 61
MILLENNIUM MANAGEMENT LLC 2 834.4K 102.3K +732.1K +715.9% 0.1% Increased 60
MARSHALL WACE, LLP 2 0 61.3K -61.3K -100.0% 0.0% Sold Out 58
Weiss Asset Management 2 57.7K 0 +57.7K — 0.1% New 57
CITADEL ADVISORS LLC 1 62.1K 5.8K +56.3K +964.8% 0.0% Increased 54
Armistice Capital 3 3.2K 0 +3.2K — 0.0% New 53
LMR Partners 3 6.7K 0 +6.7K — 0.0% New 53
Boothbay Fund Management 4 11.5K 0 +11.5K — 0.0% New 51
Squarepoint Ops LLC 2 116.9K 51.2K +65.7K +128.4% 0.0% Increased 51
ExodusPoint Capital Management 3 89.0K 31.5K +57.5K +182.3% 0.1% Increased 49
Walleye Capital 3 250 7.5K -7.3K -96.7% 0.0% Reduced 46
Point72 Asset Management, L.P. 1 408.3K 289.1K +119.2K +41.2% 0.1% Increased 43
Cinctive Capital Management 3 8.5K 43.2K -34.7K -80.4% 0.1% Reduced 42
Man Group 3 48.8K 66.5K -17.7K -26.6% 0.0% Reduced 30
D. E. Shaw & Co., Inc. 1 7.6K 7.3K +351 +4.8% 0.0% Increased 28
Holocene Advisors, LP 2 7.4K 7.9K -576 -7.3% 0.0% Reduced 26
Wolverine Asset Management 2 163 184 -21 -11.4% 0.0% Reduced 26
AQR Capital Management 3 8.6K 10.5K -1.9K -18.3% 0.0% Reduced 24
Whale Rock Capital Management 1 405.2K 405.2K 0 +0.0% 0.5% Unchanged 28

Every fund above opens. Subscribers can see any manager's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.

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Hedge funds are identified from their 13F filings, which are due 45 days after quarter end and cover long U.S.-listed equity positions only. A fund's short book never appears, so a reduced position can mean a changed view or a changed hedge — the filing doesn't say which.