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John Overdeck’s 908 Devices MASS Stock Holding History

John Overdeck’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 		– Sell
-44,127
Closed -$270K – 5287
2026
Q1 		$270K Sell
44,127
-28,200
-39% -$177K ﹤0.01% 4135
2025
Q4 		$380K Hold
72,327
– – ﹤0.01% 3463
2025
Q3 		$634K Buy
72,327
+1,333
+2% +$8.86K ﹤0.01% 2872
2025
Q2 		$506K Buy
70,994
+1,067
+2% +$5.93K ﹤0.01% 2582
2025
Q1 		$313K Buy
69,927
+50,927
+268% +$151K ﹤0.01% 2697
2024
Q4 		$41.8K Buy
+19,000
New +$54.4K ﹤0.01% 3060
2023
Q1 		– Sell
-45,038
Closed -$343K – 3102
2022
Q4 		$343K Buy
+45,038
New +$545K ﹤0.01% 2190
2022
Q1 		– Sell
-28,800
Closed -$745K – 3645
2021
Q4 		$745K Sell
28,800
-39,616
-58% -$1.17M ﹤0.01% 2837
2021
Q3 		$2.23M Buy
+68,416
New +$2.32M 0.01% 1891
2021
Q2 		– Sell
-14,182
Closed -$688K – 4363
2021
Q1 		$688K Buy
+14,182
New +$810K ﹤0.01% 2645

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
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
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
First Eagle Investment Management
First Eagle Investment Management New York $59.9B AUM 27.01% 1-Year Est. Return
Geode Capital Management
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
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

John Overdeck's MASS Position: Q2 2026 in Review

John Overdeck sold out of 908 Devices (MASS) in Q2 2026, closing a stake of 44,127 shares — an estimated $270K sold.

John Overdeck first reported a position in MASS in Q1 2021 and held it in 10 quarters. The position peaked at $2.23M in Q3 2021. 111 funds tracked by Wall St. Rank hold MASS as of Q2 2026.

  • John Overdeck reported no remaining 908 Devices position as of Q2 2026 after selling out during the quarter.
  • John Overdeck sold 44,127 908 Devices shares in Q2 2026, an estimated $270K.
  • John Overdeck first reported a position in 908 Devices in Q1 2021 and held it in 10 quarters.
  • John Overdeck's 908 Devices position peaked at $2.23M in Q3 2021.
  • 111 funds tracked by Wall St. Rank held 908 Devices as of Q2 2026.

Based on Two Sigma Investments's 13F filing for Q2 2026, filed 14 Aug 2026.