BlackRock
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BlackRock’s 908 Devices MASS Stock Holding History

BlackRock’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 		$16.9M Buy
1,944,236
+176,920
+10% +$1.36M ﹤0.01% 3370
2026
Q1 		$10.8M Sell
1,767,316
-34,456
-2% -$216K ﹤0.01% 3453
2025
Q4 		$9.46M Buy
1,801,772
+45,567
+3% +$318K ﹤0.01% 3505
2025
Q3 		$15.4M Sell
1,756,205
-34,640
-2% -$230K ﹤0.01% 3244
2025
Q2 		$12.8M Buy
1,790,845
+43,861
+3% +$244K ﹤0.01% 3278
2025
Q1 		$7.83M Sell
1,746,984
-180,034
-9% -$533K ﹤0.01% 3444
2024
Q4 		$4.24M Buy
1,927,018
+42,538
+2% +$122K ﹤0.01% 3792
2024
Q3 		$6.54M Buy
1,884,480
+191,276
+11% +$849K ﹤0.01% 3590
2024
Q2 		$8.72M Sell
1,693,204
-39,922
-2% -$241K ﹤0.01% 3448
2024
Q1 		$13.1M Sell
1,733,126
-53,627
-3% -$397K ﹤0.01% 3207
2023
Q4 		$20M Buy
1,786,753
+92,055
+5% +$629K ﹤0.01% 3013
2023
Q3 		$11.3M Sell
1,694,698
-36,185
-2% -$251K ﹤0.01% 3261
2023
Q2 		$11.9M Buy
1,730,883
+37,813
+2% +$304K ﹤0.01% 3339
2023
Q1 		$14.6M Sell
1,693,070
-70,437
-4% -$629K ﹤0.01% 3126
2022
Q4 		$13.4M Sell
1,763,507
-414,038
-19% -$5.01M ﹤0.01% 3245
2022
Q3 		$35.8M Sell
2,177,545
-141,349
-6% -$2.75M ﹤0.01% 2691
2022
Q2 		$47.7M Sell
2,318,894
-1,380,384
-37% -$23.2M ﹤0.01% 2533
2022
Q1 		$70.3M Sell
3,699,278
-9,783
-0.3% -$168K ﹤0.01% 2363
2021
Q4 		$96M Buy
3,709,061
+384,738
+12% +$11.3M ﹤0.01% 2243
2021
Q3 		$108M Buy
3,324,323
+867,014
+35% +$29.5M ﹤0.01% 2170
2021
Q2 		$95.2M Buy
2,457,309
+1,633,500
+198% +$74M ﹤0.01% 2290
2021
Q1 		$40M Buy
823,809
+523,809
+175% +$29.9M ﹤0.01% 2772
2020
Q4 		$17.1M Buy
+300,000
New +$17.5M ﹤0.01% 3089

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
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 $60.8B AUM 26.63% 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
EIM
Essex Investment Management Boston, Massachusetts $763M AUM 108.51% 1-Year Est. Return

BlackRock's MASS Position: Q2 2026 in Review

BlackRock increased its 908 Devices (MASS) stake by 10% in Q2 2026, buying an estimated $1.36M and bringing the position to 1,944,236 shares worth $16.9M. The position accounts for ﹤0.01% of the portfolio, ranked #3370.

BlackRock first reported a position in MASS in Q4 2020 and has held it in 23 quarters since. The position peaked at $108M in Q3 2021. 112 funds tracked by Wall St. Rank hold MASS as of Q2 2026.

  • BlackRock held 1,944,236 shares of 908 Devices worth $16.9M as of Q2 2026.
  • BlackRock bought 176,920 908 Devices shares in Q2 2026, an estimated $1.36M.
  • 908 Devices made up ﹤0.01% of BlackRock's portfolio in Q2 2026, its #3370 holding.
  • BlackRock first reported a position in 908 Devices in Q4 2020 and has held it in 23 quarters since.
  • BlackRock's 908 Devices position peaked at $108M in Q3 2021.
  • 112 funds tracked by Wall St. Rank held 908 Devices as of Q2 2026.

Based on BlackRock's 13F filing for Q2 2026, filed 7 Aug 2026.