Jeff Yass’s 908 Devices MASS Stock Holding History

Jeff Yass’s Portfolio MASS Stock Details MASS Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$778K	Buy	+89,400	New	+$687K	﹤0.01%	8852
2026 Q1	–	Sell	-15,300	Closed	-$80.3K	–	13713
2025 Q4	$80.3K	Buy	+15,300	New	+$107K	﹤0.01%	11562
2025 Q3	–	Sell	-13,000	Closed	-$92.7K	–	13268
2025 Q2	$92.7K	Sell	13,000 -15,100	-54%	-$83.9K	﹤0.01%	11840
2025 Q1	$126K	Buy	+28,100	New	+$83.2K	﹤0.01%	11367
2023 Q1	–	Sell	-48,700	Closed	-$371K	–	13115
2022 Q4	$371K	Buy	+48,700	New	+$589K	﹤0.01%	8593
2022 Q2	–	Sell	-28,900	Closed	-$549K	–	13522
2022 Q1	$549K	Buy	+28,900	New	+$497K	﹤0.01%	8738
2021 Q4	–	Sell	-10,700	Closed	-$348K	–	13571
2021 Q3	$348K	Buy	+10,700	New	+$363K	﹤0.01%	10261

Other funds holding MASS

FLAM

First Light Asset Management Edina, Minnesota $1.65B AUM 203.21% 1-Year Est. Return

AIC

AWM Investment Company New York $1.15B AUM 201.65% 1-Year Est. Return

AIM

ARK Investment Management St. Petersburg, Florida $15.4B AUM 50.29% 1-Year Est. Return

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

NIM

Needham Investment Management New York $3.33B AUM 163.16% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

First Eagle Investment Management New York $59.9B AUM 27.01% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

GIM

Granahan Investment Management Waltham, Massachusetts $2.81B AUM 83.9% 1-Year Est. Return

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

Jeff Yass's MASS Position: Q2 2026 in Review

Jeff Yass reduced its 908 Devices (MASS) stake by 31% in Q2 2026, selling an estimated $80.4K and leaving 23,374 shares worth $203K. The position accounts for ﹤0.01% of the portfolio, ranked #11909.

Jeff Yass first reported a position in MASS in Q4 2020 and has held it in 17 quarters since. The position peaked at $677K in Q2 2022. 111 funds tracked by Wall St. Rank hold MASS as of Q2 2026.

Jeff Yass held 23,374 shares of 908 Devices worth $203K as of Q2 2026.
Jeff Yass sold 10,467 908 Devices shares in Q2 2026, an estimated $80.4K.
908 Devices made up ﹤0.01% of Jeff Yass's portfolio in Q2 2026, its #11909 holding.
Jeff Yass first reported a position in 908 Devices in Q4 2020 and has held it in 17 quarters since.
Jeff Yass's 908 Devices position peaked at $677K in Q2 2022.
111 funds tracked by Wall St. Rank held 908 Devices as of Q2 2026.

Based on Susquehanna International Group's 13F filing for Q2 2026, filed 14 Aug 2026.