Oberweis Asset Management’s Impinj PI Stock Holding History

Oberweis Asset Management’s Portfolio PI Stock Details PI Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$12.1M	Buy	118,086 +10,966	+10%	+$1.46M	0.36%	104
2025 Q4	$18.6M	Hold	107,120	–	–	0.68%	56
2025 Q3	$19.4M	Buy	+107,120	New	+$16.9M	0.74%	51
2023 Q4	–	Sell	-35,700	Closed	-$1.96M	–	217
2023 Q3	$1.96M	Sell	35,700 -143,445	-80%	-$9.73M	0.21%	160
2023 Q2	$16.1M	Buy	179,145 +32,870	+22%	+$3.5M	1.95%	5
2023 Q1	$19.8M	Buy	146,275 +35,610	+32%	+$4.54M	3.08%	4
2022 Q4	$12.1M	Buy	110,665 +74,965	+210%	+$7.9M	2.57%	4
2022 Q3	$2.86M	Buy	35,700 +6,700	+23%	+$558K	0.67%	28
2022 Q2	$1.7M	Buy	29,000 +4,300	+17%	+$216K	0.43%	47
2022 Q1	$1.57M	Buy	+24,700	New	+$1.78M	0.31%	66
2020 Q3	–	Sell	-16,800	Closed	-$461K	–	136
2020 Q2	$461K	Sell	16,800 -4,200	-20%	-$98.3K	0.18%	86
2020 Q1	$351K	Sell	21,000 -14,300	-41%	-$386K	0.19%	121
2019 Q4	$913K	Sell	35,300 -1,300	-4%	-$40.4K	0.3%	84
2019 Q3	$1.13M	Buy	+36,600	New	+$1.28M	0.25%	62

Other funds holding PI

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Capital International Investors Los Angeles, California $427B AUM 29.17% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Sylebra Capital Palo Alto, California $774M AUM 56.69% 1-Year Est. Return

Capital World Investors Los Angeles, California $733B AUM 35.63% 1-Year Est. Return

Ameriprise Minneapolis, Minnesota $432B AUM 30.22% 1-Year Est. Return

American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return

Oberweis Asset Management's PI Position: Q1 2026 in Review

Oberweis Asset Management increased its Impinj (PI) stake by 10% in Q1 2026, buying an estimated $1.46M and bringing the position to 118,086 shares worth $12.1M. The position accounts for 0.36% of the portfolio, ranked #104.

Oberweis Asset Management first reported a position in PI in Q3 2019 and has held it in 14 quarters since. The position peaked at $19.8M in Q1 2023. 290 funds tracked by Wall St. Rank hold PI as of Q1 2026.

Oberweis Asset Management held 118,086 shares of Impinj worth $12.1M as of Q1 2026.
Oberweis Asset Management bought 10,966 Impinj shares in Q1 2026, an estimated $1.46M.
Impinj made up 0.36% of Oberweis Asset Management's portfolio in Q1 2026, its #104 holding.
Oberweis Asset Management first reported a position in Impinj in Q3 2019 and has held it in 14 quarters since.
Oberweis Asset Management's Impinj position peaked at $19.8M in Q1 2023.
290 funds tracked by Wall St. Rank held Impinj as of Q1 2026.

Based on Oberweis Asset Management's 13F filing for Q1 2026, filed 15 May 2026.