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WESTFIELD CAPITAL MANAGEMENT CO LP

Position in PI — Impinj Inc

CIK 1177719 BOSTON, MA

Position in PI

as of Jun 30, 2026 · filed Aug 12, 2026
Position Value
$38,764,626
-$4,323,608 QoQ
Shares Held
270,646
-1.5% QoQ
Ownership
0.886%
of shares outstanding
% of Portfolio
0.13%
of 13F equity value
Holder Rank
#26
of 315 holders
Holding Since
Jun 2023
6 quarters on record
Voting authority Sole 90% Shared 0% None 10%

Common Shares in PI Over Time

Shares Held

Position Value (USD)

Position in Semiconductors

Technology · as of Jun 30, 2026

WESTFIELD CAPITAL MANAGEMENT CO LP holds $3,892,895,572 across 19 Semiconductors names. PI ranks #15 (1.0% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in PI

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6 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $38,764,626 270,646
2024-06-30 $43,088,234 274,850
2024-03-31 $48,236,702 375,646
2023-12-31 $55,498,183 616,441
2023-09-30 $56,260,415 1,022,359
2023-06-30 $65,434,548 729,889