CTSO — CYTOSORBENTS CORP
Reported value held$3.42M
Funds holding (latest)29
SectorHealth Care
Funds holding (Q2 2026)12
Institutional value$647.98K · 1.73M sh
New / Add / Cut / Exit1 / 3 / 6 / 0
Top-5 / Top-10 concentration90.7% / 100.0%
Institutional holdings change
Reducing -13.1%
(-260.65K sh)
Institutional value change
Down -42.6%
As of Q2 2026, 12 SEC-registered investment managers reported holding CTSO (CYTOSORBENTS CORP) in their latest 13F filings, with a combined reported value of $647.98K across 1.73M shares. That is -13.1% by share count (-260.65K shares) versus the previous quarter, while reported value moved -42.6%. Ownership is concentrated: the five largest holders account for 90.7% of reported value and the top ten for 100.0%.
Compared with the prior quarter, 1 opened new positions, 3 added to existing stakes, 6 trimmed. 13F holdings are quarter-end snapshots, so these moves reflect positioning as of Q2 2026, not real-time trading.
CTSO is classified in the Health Care sector.
All figures on this page are computed from SEC Form 13F quarterly filings. 13F filers disclose long positions of $100,000 or more within 45 days of quarter end; short positions, options overlays and intra-quarter trades are not included, so treat the numbers as a quarterly snapshot of institutional ownership rather than real-time positioning.
Q2 2026 — 12 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| BlackRock Inc history | 627.21K | $234.58K | 0.00% | Reduce |
| Geode Capital Management history | 602.06K | $225.24K | 0.00% | Reduce |
| UBS Group AG history | 131.02K | $49.00K | 0.00% | Add |
| Northern Trust Corp history | 111.66K | $41.76K | 0.00% | Add |
| Renaissance Technologies history | 100.02K | $37.41K | 0.00% | Reduce |
| Morgan Stanley history | 91.34K | $34.16K | 0.00% | Reduce |
| Bank of America Corp history | 38.69K | $14.47K | 0.00% | Reduce |
| Goldman Sachs Group history | 15.34K | $5.74K | 0.00% | Reduce |
| Citadel Advisors history | 14.40K | $5.39K | 0.00% | Add |
| JPMorgan Chase & Co history | 372 | $142 | 0.00% | New |
| Wells Fargo & Co history | 250 | $94 | 0.00% | Hold |
| PNC Financial Services history | 31 | $12 | 0.00% | Hold |
Q1 2026 — 11 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| BlackRock Inc history | 782.99K | $443.41K | 0.00% | Add |
| Geode Capital Management history | 707.26K | $400.62K | 0.00% | Add |
| UBS Group AG history | 115.20K | $65.20K | 0.00% | Hold |
| Renaissance Technologies history | 100.72K | $57.04K | 0.00% | Add |
| Morgan Stanley history | 100.17K | $56.73K | 0.00% | Reduce |
| Northern Trust Corp history | 92.54K | $52.41K | 0.00% | Hold |
| Goldman Sachs Group history | 43.95K | $24.89K | 0.00% | Add |
| Bank of America Corp history | 39.12K | $22.14K | 0.00% | Add |
| Citadel Advisors history | 10.80K | $6.12K | 0.00% | Reduce |
| Wells Fargo & Co history | 250 | $142 | 0.00% | Reduce |
| PNC Financial Services history | 31 | $18 | 0.00% | Hold |
Q4 2025 — 15 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Vanguard Group history | 2.20M | $1.41M | 0.00% | Hold |
| BlackRock Inc history | 770.55K | $492.54K | 0.00% | Add |
| Geode Capital Management history | 603.77K | $386.03K | 0.00% | Hold |
| Citadel Advisors history | 149.28K | $95.42K | 0.00% | Add |
| Morgan Stanley history | 116.48K | $74.45K | 0.00% | Add |
| UBS Group AG history | 115.27K | $73.66K | 0.00% | Hold |
| Renaissance Technologies history | 100.12K | $64.00K | 0.00% | Reduce |
| Northern Trust Corp history | 92.54K | $59.15K | 0.00% | Add |
| Bank of America Corp history | 38.71K | $24.73K | 0.00% | Hold |
| Goldman Sachs Group history | 35.95K | $22.98K | 0.00% | Reduce |
| Millennium Management history | 10.21K | $6.52K | 0.00% | New |
| Wells Fargo & Co history | 730 | $467 | 0.00% | Hold |
| Fidelity Management & Research (FMR) history | 384 | $245 | 0.00% | New |
| JPMorgan Chase & Co history | 372 | $238 | 0.00% | Hold |
| PNC Financial Services history | 31 | $20 | 0.00% | Hold |
Q3 2025 — 13 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Vanguard Group history | 2.20M | $2.06M | 0.00% | Add |
| BlackRock Inc history | 764.81K | $714.41K | 0.00% | Add |
| Geode Capital Management history | 601.45K | $561.98K | 0.00% | Hold |
| Renaissance Technologies history | 134.81K | $125.92K | 0.00% | Add |
| UBS Group AG history | 115.20K | $107.60K | 0.00% | Reduce |
| Morgan Stanley history | 107.26K | $100.19K | 0.00% | Add |
| Northern Trust Corp history | 91.56K | $85.53K | 0.00% | Hold |
| Citadel Advisors history | 65.69K | $61.36K | 0.00% | Add |
| Goldman Sachs Group history | 60.55K | $56.56K | 0.00% | Add |
| Bank of America Corp history | 38.70K | $36.15K | 0.00% | Reduce |
| Wells Fargo & Co history | 730 | $682 | 0.00% | Hold |
| JPMorgan Chase & Co history | 372 | $347 | 0.00% | Hold |
| PNC Financial Services history | 31 | $29 | 0.00% | Hold |
Q2 2025 — 13 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Vanguard Group history | 2.12M | $2.72M | 0.00% | Add |
| BlackRock Inc history | 745.61K | $954.38K | 0.00% | Add |
| Geode Capital Management history | 601.45K | $770.06K | 0.00% | Reduce |
| UBS Group AG history | 122.33K | $156.59K | 0.00% | Add |
| Renaissance Technologies history | 116.64K | $149.30K | 0.00% | Reduce |
| Morgan Stanley history | 105.41K | $134.93K | 0.00% | Hold |
| Northern Trust Corp history | 91.56K | $117.20K | 0.00% | Hold |
| Goldman Sachs Group history | 46.80K | $59.90K | 0.00% | Reduce |
| Bank of America Corp history | 39.07K | $50.02K | 0.00% | Reduce |
| Citadel Advisors history | 28.90K | $36.99K | 0.00% | Add |
| Wells Fargo & Co history | 730 | $934 | 0.00% | Add |
| JPMorgan Chase & Co history | 372 | $476 | 0.00% | Reduce |
| PNC Financial Services history | 31 | $40 | 0.00% | Hold |
Q1 2025 — 14 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Vanguard Group history | 1.95M | $1.95M | 0.00% | Hold |
| BlackRock Inc history | 627.30K | $627.30K | 0.00% | Hold |
| Geode Capital Management history | 613.86K | $614.05K | 0.00% | Add |
| Renaissance Technologies history | 225.25K | $225.25K | 0.00% | Add |
| UBS Group AG history | 115.20K | $115.20K | 0.00% | Reduce |
| Morgan Stanley history | 105.71K | $105.71K | 0.00% | Reduce |
| Northern Trust Corp history | 91.56K | $91.56K | 0.00% | Hold |
| Goldman Sachs Group history | 62.66K | $62.66K | 0.00% | Add |
| Bank of America Corp history | 43.98K | $43.98K | 0.00% | Add |
| Citadel Advisors history | 23.18K | $23.18K | 0.00% | Add |
| JPMorgan Chase & Co history | 485 | $485 | 0.00% | Reduce |
| Wells Fargo & Co history | 250 | $250 | 0.00% | Hold |
| PNC Financial Services history | 31 | $31 | 0.00% | Hold |
| Lazard Asset Management history | 954 | $0 | — | New |
New Positions (Q2 2026)
- JPMorgan Chase & Co 372 sh · $142
Fully Exited (vs previous quarter)
No tracked fund fully exited this quarter.
Fund Position History — shares by quarter (top 20 funds)
| Fund | Q2 2026 | Q1 2026 | Q4 2025 | Q3 2025 | Q2 2025 | Q1 2025 | Q4 2024 | Q3 2024 | Q2 2024 | Q1 2024 | Q4 2023 | Q3 2023 | Q2 2023 | Q1 2023 | Q4 2022 | Q3 2022 | Q2 2022 | Q1 2022 | Q4 2021 | Q3 2021 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| BlackRock Inc | 627.21K | 782.99K | 770.55K | 764.81K | 745.61K | 627.30K | 627.30K | 627.30K | — | — | — | — | — | — | — | — | — | — | — | — |
| Geode Capital Management | 602.06K | 707.26K | 603.77K | 601.45K | 601.45K | 613.86K | 474.15K | 467.06K | 434.64K | 438.30K | 364.92K | 364.92K | 371.71K | 371.71K | 371.71K | 368.52K | 367.61K | 702.72K | 693.91K | 697.16K |
| UBS Group AG | 131.02K | 115.20K | 115.27K | 115.20K | 122.33K | 115.20K | 144.93K | 2.57K | 1.86K | 57 | 2.96K | 197 | 1.12K | 480 | 3.55K | 5.66K | 458 | 3.19K | 11.25K | 1.60K |
| Northern Trust Corp | 111.66K | 92.54K | 92.54K | 91.56K | 91.56K | 91.56K | 91.56K | 74.86K | 74.86K | 75.01K | 75.01K | 75.02K | 75.02K | 73.67K | 71.33K | 71.33K | 71.58K | 362.39K | 379.25K | 382.48K |
| Renaissance Technologies | 100.02K | 100.72K | 100.12K | 134.81K | 116.64K | 225.25K | 88.02K | 79.62K | 75.82K | 79.62K | 175.32K | 119.10K | 118.90K | 118.60K | 118.40K | 197.80K | 140.12K | 84.90K | — | — |
| Morgan Stanley | 91.34K | 100.17K | 116.48K | 107.26K | 105.41K | 105.71K | 106.62K | 113.98K | 114.22K | 116.39K | 119.98K | 123.31K | 123.50K | 125.98K | 111.34K | 103.55K | 309.11K | 191.35K | 178.15K | 246.36K |
| Bank of America Corp | 38.69K | 39.12K | 38.71K | 38.70K | 39.07K | 43.98K | 34.45K | 34.44K | 34.45K | 36.90K | 66.78K | 67.91K | 67.62K | 69.17K | 73.82K | 81.48K | 111.24K | 42.59K | 60.26K | 60.23K |
| Goldman Sachs Group | 15.34K | 43.95K | 35.95K | 60.55K | 46.80K | 62.66K | 25.14K | — | — | — | — | — | — | 15.37K | — | 11.62K | 55.71K | 298.88K | 130.16K | 87.05K |
| Citadel Advisors | 14.40K | 10.80K | 149.28K | 65.69K | 28.90K | 23.18K | 16.00K | 44.49K | 10.60K | — | — | 34.99K | 55.70K | 37.69K | — | — | 126.90K | 22.60K | 20.82K | 74.56K |
| JPMorgan Chase & Co | 372 | — | 372 | 372 | 372 | 485 | 494 | 372 | 372 | 372 | 372 | 372 | 372 | 372 | 372 | 372 | 26.81K | 19.71K | 72.39K | 15.60K |
| Wells Fargo & Co | 250 | 250 | 730 | 730 | 730 | 250 | 250 | 250 | 453 | 796 | 541 | 525 | 538 | 525 | 520 | 4.51K | 4.55K | 18.24K | 33.02K | 9.35K |
| PNC Financial Services | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 36 | — | — | — | — | — | — | — | — | — |
| Fidelity Management & Research (FMR) | — | — | 384 | — | — | — | — | 285 | 285 | — | — | — | — | — | — | — | 90 | 326 | — | — |
| Millennium Management | — | — | 10.21K | — | — | — | 33.28K | — | 19.94K | 35.84K | 45.13K | 165.06K | 188.39K | 198.55K | 221.50K | 261.29K | 524.66K | — | 30.52K | 42.51K |
| Vanguard Group | — | — | 2.20M | 2.20M | 2.12M | 1.95M | 1.95M | 1.95M | 1.95M | 1.95M | 1.95M | 1.95M | 1.95M | 1.96M | 1.96M | 1.96M | 1.96M | 2.19M | 2.21M | 1.87M |
| Deutsche Bank AG | — | — | — | — | — | — | — | — | — | — | — | — | 17.68K | 17.68K | 17.68K | 17.68K | 17.68K | 24.04K | 34.09K | 32.77K |
| Two Sigma Investments | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 33.31K | 19.28K |
| AQR Capital Management | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 40.44K | 17.41K |
| Balyasny Asset Management | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 11.76K | — | — | — |
| BNY Mellon | — | — | — | — | — | — | — | — | — | 3.64K | 22.43K | 51.62K | 52.42K | 52.63K | 53.24K | 53.47K | 53.47K | 159.69K | 159.69K | 166.74K |
▲ Bought Low (fund opened/added, stock rose ≥5% next quarter) ▼ Sold High (fund reduced, stock fell ≥5% next quarter)
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