Ardsley Advisory Partners’s Impinj PI Stock Holding History

Ardsley Advisory Partners’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 Q2	$4.73M	Buy	33,000 +21,500	+187%	+$2.81M	0.49%	64
2026 Q1	$1.18M	Buy	11,500 +5,000	+77%	+$665K	0.15%	116
2025 Q4	$1.13M	Buy	+6,500	New	+$1.16M	0.12%	121
2024 Q2	–	Sell	-5,000	Closed	-$642K	–	172
2024 Q1	$642K	Buy	+5,000	New	+$525K	0.09%	104
2023 Q3	–	Sell	-12,250	Closed	-$1.1M	–	146
2023 Q2	$1.1M	Buy	12,250 +5,725	+88%	+$610K	0.19%	80
2023 Q1	$884K	Sell	6,525 -13,525	-67%	-$1.72M	0.19%	68
2022 Q4	$2.19M	Buy	20,050 +3,050	+18%	+$321K	0.45%	44
2022 Q3	$1.36M	Sell	17,000 -9,750	-36%	-$812K	0.3%	61
2022 Q2	$1.57M	Buy	26,750 +14,750	+123%	+$741K	0.26%	66
2022 Q1	$762K	Buy	+12,000	New	+$867K	0.13%	89
2017 Q2	–	Sell	-7,000	Closed	-$212K	–	166
2017 Q1	$212K	Buy	+7,000	New	+$220K	0.03%	135

Other funds holding PI

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Capital International Investors Los Angeles, California $484B AUM 34.9% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Capital World Investors Los Angeles, California $846B AUM 46.74% 1-Year Est. Return

Millennium Management New York $276B AUM 44.8% 1-Year Est. Return

American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return

Sylebra Capital Palo Alto, California $945M AUM 22.34% 1-Year Est. Return

Ardsley Advisory Partners's PI Position: Q2 2026 in Review

Ardsley Advisory Partners increased its Impinj (PI) stake by 187% in Q2 2026, buying an estimated $2.81M and bringing the position to 33,000 shares worth $4.73M. The position accounts for 0.49% of the portfolio, ranked #64.

Ardsley Advisory Partners first reported a position in PI in Q1 2017 and has held it in 11 quarters since. 316 funds tracked by Wall St. Rank hold PI as of Q2 2026.

Ardsley Advisory Partners held 33,000 shares of Impinj worth $4.73M as of Q2 2026.
Ardsley Advisory Partners bought 21,500 Impinj shares in Q2 2026, an estimated $2.81M.
Impinj made up 0.49% of Ardsley Advisory Partners's portfolio in Q2 2026, its #64 holding.
Ardsley Advisory Partners first reported a position in Impinj in Q1 2017 and has held it in 11 quarters since.
316 funds tracked by Wall St. Rank held Impinj as of Q2 2026.

Based on Ardsley Advisory Partners's 13F filing for Q2 2026, filed 13 Jul 2026.