Citadel Advisors
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Citadel Advisors’s 908 Devices MASS Stock Holding History

Citadel Advisors’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 		$546K Sell
62,747
-81,800
-57% -$628K ﹤0.01% 9639
2026
Q1 		$885K Sell
144,547
-119,826
-45% -$751K ﹤0.01% 7947
2025
Q4 		$1.39M Buy
+264,373
New +$1.85M ﹤0.01% 6683
2025
Q1 		– Sell
-197,183
Closed -$584K – 15139
2024
Q4 		$434K Sell
197,183
-19,946
-9% -$57.1K ﹤0.01% 8876
2024
Q3 		$753K Buy
217,129
+47,853
+28% +$212K ﹤0.01% 7406
2024
Q2 		$872K Buy
169,276
+120,450
+247% +$727K ﹤0.01% 6866
2024
Q1 		$369K Sell
48,826
-5,037
-9% -$37.3K ﹤0.01% 9023
2023
Q4 		$604K Buy
53,863
+19,109
+55% +$131K ﹤0.01% 7684
2023
Q3 		$231K Buy
34,754
+20,030
+136% +$139K ﹤0.01% 9641
2023
Q2 		$101K Buy
14,724
+5,818
+65% +$46.8K ﹤0.01% 10922
2023
Q1 		$76.6K Sell
8,906
-21,619
-71% -$193K ﹤0.01% 11615
2022
Q4 		$233K Buy
30,525
+17,399
+133% +$211K ﹤0.01% 9830
2022
Q3 		$216K Buy
+13,126
New +$255K ﹤0.01% 10259
2022
Q1 		– Sell
-22,868
Closed -$393K – 14181
2021
Q4 		$592K Buy
+22,868
New +$673K ﹤0.01% 9263

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 $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

Citadel Advisors's MASS Position: Q2 2026 in Review

Citadel Advisors reduced its 908 Devices (MASS) stake by 57% in Q2 2026, selling an estimated $628K and leaving 62,747 shares worth $546K. The position accounts for ﹤0.01% of the portfolio, ranked #9639.

Citadel Advisors first reported a position in MASS in Q4 2021 and has held it in 14 quarters since. The position peaked at $1.39M in Q4 2025. 112 funds tracked by Wall St. Rank hold MASS as of Q2 2026.

  • Citadel Advisors held 62,747 shares of 908 Devices worth $546K as of Q2 2026.
  • Citadel Advisors sold 81,800 908 Devices shares in Q2 2026, an estimated $628K.
  • 908 Devices made up ﹤0.01% of Citadel Advisors's portfolio in Q2 2026, its #9639 holding.
  • Citadel Advisors first reported a position in 908 Devices in Q4 2021 and has held it in 14 quarters since.
  • Citadel Advisors's 908 Devices position peaked at $1.39M in Q4 2025.
  • 112 funds tracked by Wall St. Rank held 908 Devices as of Q2 2026.

Based on Citadel Advisors's 13F filing for Q2 2026, filed 14 Aug 2026.