MBRX — MOLECULIN BIOTECH INC
As of Q2 2026, 5 SEC-registered investment managers reported holding MBRX (MOLECULIN BIOTECH INC) in their latest 13F filings, with a combined reported value of $197.12K across 70.65K shares. That is +94.8% by share count (+34.38K shares) versus the previous quarter, while reported value moved +137.3%. Ownership is concentrated: the five largest holders account for 100.0% of reported value and the top ten for 100.0%.
Compared with the prior quarter, 2 opened new positions, 2 added to existing stakes, 2 exited entirely. 13F holdings are quarter-end snapshots, so these moves reflect positioning as of Q2 2026, not real-time trading.
MBRX 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 — 5 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Geode Capital Management history | 47.25K | $131.83K | 0.00% | Add |
| Morgan Stanley history | 20.04K | $55.90K | 0.00% | Add |
| Citigroup Inc history | 2.67K | $7.46K | 0.00% | New |
| BlackRock Inc history | 491 | $1.37K | 0.00% | Hold |
| Wells Fargo & Co history | 200 | $558 | 0.00% | New |
Q1 2026 — 5 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Geode Capital Management history | 32.33K | $74.03K | 0.00% | Add |
| UBS Group AG history | 3.41K | $7.81K | 0.00% | Reduce |
| BlackRock Inc history | 491 | $1.12K | 0.00% | Reduce |
| Morgan Stanley history | 36 | $83 | 0.00% | Hold |
| Fidelity Management & Research (FMR) history | 3 | $7 | 0.00% | New |
Q4 2025 — 7 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Citadel Advisors history | 33.09K | $109.51K | 0.00% | New |
| Vanguard Group history | 15.54K | $51.45K | 0.00% | Reduce |
| Geode Capital Management history | 15.14K | $50.11K | 0.00% | Reduce |
| UBS Group AG history | 5.86K | $19.41K | 0.00% | Add |
| BlackRock Inc history | 495 | $1.64K | 0.00% | Reduce |
| Morgan Stanley history | 36 | $119 | 0.00% | Reduce |
| Bank of America Corp history | 36 | $119 | 0.00% | Reduce |
Q3 2025 — 7 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Vanguard Group history | 239.92K | $127.16K | 0.00% | Add |
| Geode Capital Management history | 208.21K | $110.35K | 0.00% | Add |
| Goldman Sachs Group history | 12.75K | $6.76K | 0.00% | New |
| BlackRock Inc history | 12.38K | $6.56K | 0.00% | Hold |
| UBS Group AG history | 3.96K | $2.10K | 0.00% | Reduce |
| Morgan Stanley history | 926 | $491 | 0.00% | Hold |
| Bank of America Corp history | 266 | $141 | 0.00% | Add |
Q2 2025 — 7 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Citigroup Inc history | 85.28K | $25.75K | 0.00% | Add |
| Vanguard Group history | 30.93K | $9.34K | 0.00% | Hold |
| Geode Capital Management history | 27.53K | $8.31K | 0.00% | Add |
| BlackRock Inc history | 12.38K | $3.74K | 0.00% | Hold |
| UBS Group AG history | 7.99K | $2.41K | 0.00% | New |
| Morgan Stanley history | 926 | $280 | 0.00% | Hold |
| Bank of America Corp history | 146 | $44 | 0.00% | Add |
Q1 2025 — 7 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Vanguard Group history | 30.93K | $30.13K | 0.00% | Hold |
| Geode Capital Management history | 26.06K | $25.38K | 0.00% | Add |
| BlackRock Inc history | 12.38K | $12.05K | 0.00% | Hold |
| Citigroup Inc history | 2.79K | $2.71K | 0.00% | New |
| Morgan Stanley history | 926 | $901 | 0.00% | Add |
| Fidelity Management & Research (FMR) history | 34 | $33 | 0.00% | New |
| Bank of America Corp history | 32 | $31 | 0.00% | Reduce |
New Positions (Q2 2026)
- Citigroup Inc 2.67K sh · $7.46K
- Wells Fargo & Co 200 sh · $558
Fully Exited (vs previous quarter)
- UBS Group AG sold 3.41K sh · $7.81K
- Fidelity Management & Research (FMR) sold 3 sh · $7
Fund Position History — shares by quarter (top 16 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Geode Capital Management | 47.25K | 32.33K | 15.14K | 208.21K | 27.53K | 26.06K | 22.02K | 21.82K | 19.76K | 16.60K | 246.67K | 246.67K | 246.45K | 246.45K | 246.45K | 247.05K | 247.05K | 245.61K | 245.61K | 245.61K |
| Morgan Stanley | 20.04K | 36 | 36 | 926 | 926 | 926 | 426 | 449 | 426 | 423 | 6.33K | 6.33K | 6.33K | 6.33K | 6.34K | 6.01K | 6.00K | 6.03K | 6.00K | 6.00K |
| Citigroup Inc | 2.67K | — | — | — | 85.28K | 2.79K | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| BlackRock Inc | 491 | 491 | 495 | 12.38K | 12.38K | 12.38K | 12.38K | 12.47K | — | — | — | — | — | — | — | — | — | — | — | — |
| Wells Fargo & Co | 200 | — | — | — | — | — | — | — | — | 19 | 229 | 717 | 214 | 198 | 520 | 190 | 191 | 4.18K | 4.17K | 175 |
| Citadel Advisors | — | — | 33.09K | — | — | — | — | — | — | — | 64.65K | — | — | 31.93K | 16.53K | 13.63K | — | — | — | — |
| Fidelity Management & Research (FMR) | — | 3 | — | — | — | 34 | — | — | — | — | — | 2 | 2 | 2 | 2 | 2 | 17 | — | — | — |
| Goldman Sachs Group | — | — | — | 12.75K | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 11.82K | — |
| Bank of America Corp | — | — | 36 | 266 | 146 | 32 | 104 | 143 | 28 | 7 | 138 | 100 | 100 | 6.75K | 6.68K | 6.65K | 6.67K | 6.65K | 6.70K | 6.65K |
| UBS Group AG | — | 3.41K | 5.86K | 3.96K | 7.99K | — | 8.94K | — | — | — | — | 200 | — | — | 11.24K | 10.44K | 1.65K | — | — | 1.40K |
| Vanguard Group | — | — | 15.54K | 239.92K | 30.93K | 30.93K | 30.93K | 71.40K | 84.42K | 75.30K | 1.08M | 1.08M | 1.08M | 1.08M | 1.08M | 1.08M | 1.08M | 1.08M | 1.09M | 1.05M |
| JPMorgan Chase & Co | — | — | — | — | — | — | — | 1 | 6 | 7 | 52 | 36 | — | — | — | — | — | 594 | — | — |
| Renaissance Technologies | — | — | — | — | — | — | 11.50K | 11.00K | — | — | 129.60K | 120.20K | 127.40K | 94.61K | 82.20K | 84.50K | 88.10K | 59.90K | 33.40K | — |
| Millennium Management | — | — | — | — | — | — | — | — | — | — | — | 30.49K | 33.74K | — | — | — | — | — | — | — |
| Northern Trust Corp | — | — | — | — | — | — | — | — | — | — | 53.60K | 53.60K | 53.60K | 53.60K | 46.33K | 46.33K | 46.33K | 50.73K | 50.73K | 50.73K |
| Charles Schwab Investment Management | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 36.61K | — | 31.45K | 20.20K | 20.20K | 20.20K |
▲ Bought Low (fund opened/added, stock rose ≥5% next quarter) ▼ Sold High (fund reduced, stock fell ≥5% next quarter)
Drag / scroll to zoom · Default shows the most recent year · Annotations come from quarterly fund actions in 13F filings · Hover a marker for details