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
2025
Q4 		– Sell
-13,600
Closed -$119K – 13503
2025
Q3 		$119K Buy
+13,600
New +$90.4K ﹤0.01% 11718
2025
Q2 		– Sell
-10,900
Closed -$48.8K – 14010
2025
Q1 		$48.8K Buy
10,900
+7,500
+221% +$22.2K ﹤0.01% 12334
2024
Q4 		$7.48K Sell
3,400
-18,600
-85% -$53.3K ﹤0.01% 13736
2024
Q3 		$76.3K Buy
22,000
+20,600
+1,471% +$91.4K ﹤0.01% 11465
2024
Q2 		$7.21K Sell
1,400
-1,300
-48% -$7.85K ﹤0.01% 13267
2024
Q1 		$20.4K Buy
2,700
+1,800
+200% +$13.3K ﹤0.01% 13003
2023
Q4 		$10.1K Buy
+900
New +$6.15K ﹤0.01% 13119
2023
Q3 		– Sell
-3,500
Closed -$24K – 14761
2023
Q2 		$24K Sell
3,500
-400
-10% -$3.22K ﹤0.01% 12570
2023
Q1 		$33.5K Sell
3,900
-1,300
-25% -$11.6K ﹤0.01% 12622
2022
Q4 		$39.6K Buy
+5,200
New +$62.9K ﹤0.01% 12431
2022
Q1 		– Sell
-10,400
Closed -$269K – 14182
2021
Q4 		$269K Buy
+10,400
New +$306K ﹤0.01% 11159

Other funds holding MASS

FLAM
First Light Asset Management Edina, Minnesota $1.12B AUM 114.45% 1-Year Est. Return
AIC
AWM Investment Company New York $903M AUM 163.47% 1-Year Est. Return
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
NIM
Needham Investment Management New York $1.96B AUM 101.23% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
First Eagle Investment Management
First Eagle Investment Management New York $59B AUM 32.99% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
GIM
Granahan Investment Management Waltham, Massachusetts $2.07B AUM 56.45% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Citadel Advisors's MASS Position: Q1 2026 in Review

Citadel Advisors reduced its 908 Devices (MASS) stake by 45% in Q1 2026, selling an estimated $751K and leaving 144,547 shares worth $885K. The position accounts for ﹤0.01% of the portfolio, ranked #7947.

Citadel Advisors first reported a position in MASS in Q4 2021 and has held it in 13 quarters since. The position peaked at $1.39M in Q4 2025. 112 funds tracked by Wall St. Rank hold MASS as of Q1 2026.

  • Citadel Advisors held 144,547 shares of 908 Devices worth $885K as of Q1 2026.
  • Citadel Advisors sold 119,826 908 Devices shares in Q1 2026, an estimated $751K.
  • 908 Devices made up ﹤0.01% of Citadel Advisors's portfolio in Q1 2026, its #7947 holding.
  • Citadel Advisors first reported a position in 908 Devices in Q4 2021 and has held it in 13 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 Q1 2026.

Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.