Primecap Management
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Primecap Management’s 908 Devices MASS Stock Holding History

Primecap Management’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
2024
Q4 		– Sell
-20,000
Closed -$69.4K – 335
2024
Q3 		$69.4K Sell
20,000
-4,830
-19% -$21.4K ﹤0.01% 336
2024
Q2 		$128K Sell
24,830
-2,040
-8% -$12.3K ﹤0.01% 332
2024
Q1 		$203K Hold
26,870
– – ﹤0.01% 332
2023
Q4 		$301K Hold
26,870
– – ﹤0.01% 333
2023
Q3 		$179K Hold
26,870
– – ﹤0.01% 330
2023
Q2 		$184K Hold
26,870
– – ﹤0.01% 327
2023
Q1 		$231K Hold
26,870
– – ﹤0.01% 326
2022
Q4 		$205K Sell
26,870
-430
-2% -$5.2K ﹤0.01% 331
2022
Q3 		$449K Sell
27,300
-149,419
-85% -$2.9M ﹤0.01% 329
2022
Q2 		$3.64M Sell
176,719
-8,600
-5% -$144K ﹤0.01% 292
2022
Q1 		$3.52M Sell
185,319
-2,810
-1% -$48.3K ﹤0.01% 297
2021
Q4 		$4.87M Sell
188,129
-42,090
-18% -$1.24M ﹤0.01% 290
2021
Q3 		$7.49M Sell
230,219
-67,038
-23% -$2.28M 0.01% 274
2021
Q2 		$11.5M Sell
297,257
-31,343
-10% -$1.42M 0.01% 257
2021
Q1 		$15.9M Buy
328,600
+3,600
+1% +$206K 0.01% 244
2020
Q4 		$18.5M Buy
+325,000
New +$19M 0.01% 235

Other funds holding MASS

AIM
ARK Investment Management St. Petersburg, Florida $12.9B AUM 64.92% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Ameriprise
Ameriprise Minneapolis, Minnesota $432B AUM 30.22% 1-Year Est. Return
AIC
AWM Investment Company New York $903M AUM 163.47% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
TCM
Tao Capital Management San Francisco, California $119M AUM 87.46% 1-Year Est. Return
GIM
Granahan Investment Management Waltham, Massachusetts $2.07B AUM 56.45% 1-Year Est. Return
Sumitomo Mitsui Trust Group
Sumitomo Mitsui Trust Group Minato-Ku, Tokyo, Japan $154B AUM 29.96% 1-Year Est. Return
NAMA
Nikko Asset Management Americas New York $7.07B AUM 50.91% 1-Year Est. Return

Primecap Management's MASS Position: Q4 2024 in Review

Primecap Management sold out of 908 Devices (MASS) in Q4 2024, closing a stake of 20,000 shares — an estimated $69.4K sold.

Primecap Management first reported a position in MASS in Q4 2020 and held it in 16 quarters. The position peaked at $18.5M in Q4 2020. 81 funds tracked by Wall St. Rank hold MASS as of Q4 2024.

  • Primecap Management reported no remaining 908 Devices position as of Q4 2024 after selling out during the quarter.
  • Primecap Management sold 20,000 908 Devices shares in Q4 2024, an estimated $69.4K.
  • Primecap Management first reported a position in 908 Devices in Q4 2020 and held it in 16 quarters.
  • Primecap Management's 908 Devices position peaked at $18.5M in Q4 2020.
  • 81 funds tracked by Wall St. Rank held 908 Devices as of Q4 2024.

Based on Primecap Management's 13F filing for Q4 2024, filed 10 Feb 2025.