SEI Investments
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SEI Investments’s Cytosorbents Corp CTSO Stock Holding History

SEI Investments’s Portfolio CTSO Stock Details CTSO Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q4 		– Sell
-17,734
Closed -$16.6K – 3140
2025
Q3 		$16.6K Sell
17,734
-196
-1% -$193 ﹤0.01% 2811
2025
Q2 		$22.9K Sell
17,930
-8,613
-32% -$8.65K ﹤0.01% 2779
2025
Q1 		$26.6K Buy
26,543
+10,983
+71% +$11.6K ﹤0.01% 2728
2024
Q4 		$14.1K Sell
15,560
-2,643
-15% -$2.59K ﹤0.01% 2719
2024
Q3 		$27.3K Sell
18,203
-357
-2% -$391 ﹤0.01% 2660
2024
Q2 		$12.9K Buy
18,560
+4,089
+28% +$3.55K ﹤0.01% 2644
2024
Q1 		$13.8K Buy
14,471
+4,070
+39% +$3.96K ﹤0.01% 2608
2023
Q4 		$11.5K Sell
10,401
-3,434
-25% -$5.1K ﹤0.01% 2601
2023
Q3 		$26K Buy
13,835
+303
+2% +$870 ﹤0.01% 2588
2023
Q2 		$48.5K Buy
13,532
+305
+2% +$964 ﹤0.01% 2621
2023
Q1 		$44.5K Buy
13,227
+1,119
+9% +$3.36K ﹤0.01% 2634
2022
Q4 		$18.8K Buy
+12,108
New +$18K ﹤0.01% 2508
2022
Q3 		– Sell
-11,982
Closed -$15K – 2664
2022
Q2 		$15K Buy
+11,982
New +$27.5K ﹤0.01% 2634

Other funds holding CTSO

AC
Avenir Corporation Alexandria, Virginia $821M AUM 4.23% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
SC
Skylands Capital Milwaukee, Wisconsin $814M AUM 32.37% 1-Year Est. Return
Neuberger Berman Group
Neuberger Berman Group New York $150B AUM 40.08% 1-Year Est. Return
CM
CM Management Gulf Breeze, Florida $157M AUM 60.08% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
SIG
Sargent Investment Group Bethesda, Maryland $832M AUM 24.89% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Pathstone Holdings
Pathstone Holdings Englewood, New Jersey $34.3B AUM 27.35% 1-Year Est. Return
CIBC Private Wealth Group
CIBC Private Wealth Group Atlanta, Georgia $59.2B AUM 20.62% 1-Year Est. Return

SEI Investments's CTSO Position: Q4 2025 in Review

SEI Investments sold out of Cytosorbents Corp (CTSO) in Q4 2025, closing a stake of 17,734 shares — an estimated $16.6K sold.

SEI Investments first reported a position in CTSO in Q2 2022 and held it in 13 quarters. The position peaked at $48.5K in Q2 2023. 51 funds tracked by Wall St. Rank hold CTSO as of Q4 2025.

  • SEI Investments reported no remaining Cytosorbents Corp position as of Q4 2025 after selling out during the quarter.
  • SEI Investments sold 17,734 Cytosorbents Corp shares in Q4 2025, an estimated $16.6K.
  • SEI Investments first reported a position in Cytosorbents Corp in Q2 2022 and held it in 13 quarters.
  • SEI Investments's Cytosorbents Corp position peaked at $48.5K in Q2 2023.
  • 51 funds tracked by Wall St. Rank held Cytosorbents Corp as of Q4 2025.

Based on SEI Investments's 13F filing for Q4 2025, filed 13 Feb 2026.