SLXN — FLEXION THERAPEUTICS INC
As of Q2 2026, 1 SEC-registered investment managers reported holding SLXN (FLEXION THERAPEUTICS INC) in their latest 13F filings, with a combined reported value of $3.60K across 1.41K shares. That is -93.4% by share count (-20.03K shares) versus the previous quarter, while reported value moved -86.9%. 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, 1 added to existing stakes, 1 exited entirely. 13F holdings are quarter-end snapshots, so these moves reflect positioning as of Q2 2026, not real-time trading.
SLXN 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.
| Fund | Quarter | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|---|
| Wells Fargo & Co history | Q3 2021 | 3.77M | $3.34M | 0.00% | New |
| BNY Mellon history | Q3 2021 | 500.00K | $446.00K | 0.00% | New |
| JPMorgan Chase & Co history | Q3 2021 | 379.00K | $338.00K | 0.00% | New |
| Citadel Advisors history | Q1 2026 | 20.93K | $26.79K | 0.00% | Add |
| UBS Group AG history | Q2 2026 | 1.41K | $3.60K | 0.00% | Add |
| Bank of America Corp history | Q2 2025 | 500 | $405 | 0.00% | Hold |
New Positions (Q2 2026)
No fund opened a new position this quarter.
Fully Exited (vs previous quarter)
- Citadel Advisors sold 20.93K sh · $26.79K
Fund Position History — shares by quarter (top 6 funds)
| Fund | Q3 2021 | Q3 2024 | Q4 2024 | Q1 2025 | Q2 2025 | Q3 2025 | Q4 2025 | Q1 2026 | Q2 2026 |
|---|---|---|---|---|---|---|---|---|---|
| UBS Group AG | 15.00K | 15.06K | 14.85K | 72.87K | 109.26K | 692 | 1.69K | 517 | 1.41K |
| Citadel Advisors | — | — | — | — | — | — | 12.21K | 20.93K | — |
| JPMorgan Chase & Co | 379.00K | — | — | — | — | — | — | — | — |
| Bank of America Corp | — | — | — | 500 | 500 | — | — | — | — |
| BNY Mellon | 500.00K | — | — | — | — | — | — | — | — |
| Wells Fargo & Co | 3.77M | — | — | — | — | — | — | — | — |
▲ 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